/* ========================================
   GOD-TIER MINIMALIST PORTFOLIO
   Silicon Valley Level Attention to Detail
   ======================================== */

/* ========================================
   1. CSS VARIABLES & RESET
   ======================================== */

:root {
    /* Colors - Refined Minimalist Palette */
    --color-bg: #FAFAFA;
    --color-bg-elevated: #FFFFFF;
    --color-bg-subtle: #F5F5F5;
    --color-text-primary: #0A0A0A;
    --color-text-secondary: #525252;
    --color-text-tertiary: #8A8A8A;
    --color-text-muted: #A3A3A3;
    --color-border: #E5E5E5;
    --color-border-subtle: #F0F0F0;
    --color-border-hover: #D4D4D4;
    --color-hover: #000000;
    --color-accent: #F5F5F5;
    --color-accent-hover: #EBEBEB;
    --color-success: #10B981;
    --color-focus: rgba(10, 10, 10, 0.08);

    /* Timeline specific */
    --timeline-line: #E5E5E5;
    --timeline-dot: #0A0A0A;
    --timeline-dot-ring: rgba(10, 10, 10, 0.06);

    /* Typography - Fluid Clamp Scale */
    --font-heading: 'Crimson Pro', Georgia, 'Times New Roman', serif;
    --font-body: 'Work Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', monospace;

    /* Fluid Type Scale - clamp(min, preferred, max) */
    --text-xs: clamp(0.6875rem, 0.65rem + 0.1vw, 0.75rem);
    --text-sm: clamp(0.8125rem, 0.775rem + 0.15vw, 0.875rem);
    --text-base: clamp(0.9375rem, 0.9rem + 0.15vw, 1rem);
    --text-lg: clamp(1.0625rem, 1rem + 0.25vw, 1.125rem);
    --text-xl: clamp(1.1875rem, 1.1rem + 0.35vw, 1.3125rem);
    --text-2xl: clamp(1.375rem, 1.25rem + 0.5vw, 1.5rem);
    --text-3xl: clamp(1.75rem, 1.5rem + 1vw, 2.25rem);
    --text-4xl: clamp(2rem, 1.7rem + 1.25vw, 2.75rem);
    --text-5xl: clamp(2.5rem, 2rem + 2vw, 3.75rem);
    --text-6xl: clamp(3rem, 2.25rem + 3vw, 5rem);
    --text-7xl: clamp(3.5rem, 2.5rem + 4vw, 7rem);

    /* Spacing - Harmonic Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* Layout */
    --container-max: 1200px;
    --container-narrow: 720px;
    --container-wide: 1400px;

    /* Easing - Spring Physics */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-in-out-circ: cubic-bezier(0.85, 0, 0.15, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);

    /* Transitions */
    --transition-micro: 0.1s var(--ease-out-expo);
    --transition-fast: 0.2s var(--ease-out-expo);
    --transition-base: 0.4s var(--ease-out-expo);
    --transition-slow: 0.6s var(--ease-out-expo);
    --transition-slower: 0.8s var(--ease-out-expo);

    /* Shadows - Layered for Depth */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.02), 0 2px 6px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.02), 0 4px 12px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.02), 0 10px 30px rgba(0, 0, 0, 0.06);
    --shadow-xl: 0 8px 12px rgba(0, 0, 0, 0.02), 0 20px 50px rgba(0, 0, 0, 0.08);
    --shadow-2xl: 0 12px 20px rgba(0, 0, 0, 0.02), 0 32px 80px rgba(0, 0, 0, 0.1);

    /* Border Radius */
    --radius-xs: 2px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Navbar scrolled (theme-aware) */
    --navbar-scrolled-bg: rgba(250, 250, 250, 0.85);
    --navbar-scrolled-border: rgba(0, 0, 0, 0.04);
}

/* Dark theme */
[data-theme="dark"] {
    --color-bg: #0A0A0A;
    --color-bg-elevated: #141414;
    --color-bg-subtle: #171717;
    --color-text-primary: #FAFAFA;
    --color-text-secondary: #A3A3A3;
    --color-text-tertiary: #737373;
    --color-text-muted: #525252;
    --color-border: #262626;
    --color-border-subtle: #1F1F1F;
    --color-border-hover: #404040;
    --color-hover: #FFFFFF;
    --color-accent: #262626;
    --color-accent-hover: #333333;
    --color-success: #34D399;
    --color-focus: rgba(250, 250, 250, 0.08);

    --timeline-line: #262626;
    --timeline-dot: #FAFAFA;
    --timeline-dot-ring: rgba(250, 250, 250, 0.08);

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2), 0 2px 6px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.2), 0 4px 12px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.2), 0 10px 30px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 8px 12px rgba(0, 0, 0, 0.2), 0 20px 50px rgba(0, 0, 0, 0.35);
    --shadow-2xl: 0 12px 20px rgba(0, 0, 0, 0.25), 0 32px 80px rgba(0, 0, 0, 0.4);

    --navbar-scrolled-bg: rgba(10, 10, 10, 0.85);
    --navbar-scrolled-border: rgba(255, 255, 255, 0.06);
}

/* ========================================
   2. RESET & BASE
   ======================================== */

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-feature-settings: "kern" 1, "liga" 1;
    hanging-punctuation: first last;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    font-weight: 400;
    letter-spacing: -0.011em;
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* Theme-aware transitions for sections and footer */
section,
footer {
    transition: background-color var(--transition-base);
}

/* Smooth Page Load */
body {
    opacity: 0;
    transition: opacity 0.6s var(--ease-out-expo);
}

body.loaded {
    opacity: 1;
}

/* Custom Selection */
::selection {
    background: var(--color-text-primary);
    color: var(--color-bg);
}

::-moz-selection {
    background: var(--color-text-primary);
    color: var(--color-bg);
}

/* Focus Styles - Accessible */
:focus {
    outline: none;
}

:focus-visible {
    outline: 2px solid var(--color-text-primary);
    outline-offset: 3px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    -webkit-user-drag: none;
}

a {
    color: inherit;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}

button {
    font-family: inherit;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-8);
}

.container-narrow {
    max-width: var(--container-narrow);
}

/* ========================================
   3. CUSTOM CURSOR
   ======================================== */

.cursor {
    pointer-events: none;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
    mix-blend-mode: difference;
    opacity: 0;
    transition: opacity 0.3s var(--ease-out-expo);
}

.cursor.visible {
    opacity: 1;
}

.cursor-dot {
    width: 8px;
    height: 8px;
    background: #fff;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: transform 0.15s var(--ease-out-expo);
}

.cursor-outline {
    width: 40px;
    height: 40px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.2s var(--ease-out-expo);
}

.cursor.hovering .cursor-dot {
    transform: translate(-50%, -50%) scale(2);
}

.cursor.hovering .cursor-outline {
    transform: translate(-50%, -50%) scale(1.5);
    border-color: rgba(255, 255, 255, 0.8);
}

.cursor.clicking .cursor-dot {
    transform: translate(-50%, -50%) scale(0.8);
}

.cursor.clicking .cursor-outline {
    transform: translate(-50%, -50%) scale(0.9);
}

/* Hide on touch devices */
@media (hover: none) and (pointer: coarse) {
    .cursor {
        display: none !important;
    }
}

/* ========================================
   4. SCROLL PROGRESS INDICATOR
   ======================================== */

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    z-index: 9999;
    background: transparent;
}

.scroll-progress-bar {
    height: 100%;
    background: var(--color-text-primary);
    width: 0%;
    transition: width 0.1s linear;
}

/* ========================================
   5. TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.1;
    color: var(--color-text-primary);
    letter-spacing: -0.025em;
    text-wrap: balance;
}

p {
    text-wrap: pretty;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
}

.section-label::before {
    content: '';
    width: 32px;
    height: 1px;
    background: var(--color-text-tertiary);
    transition: width var(--transition-base);
}

.section-label:hover::before {
    width: 48px;
}

.section-title {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-6);
    letter-spacing: -0.03em;
}

/* Text Reveal Animation */
.text-reveal {
    overflow: hidden;
}

.text-reveal-inner {
    display: block;
    transform: translateY(100%);
    transition: transform 0.8s var(--ease-out-expo);
}

.text-reveal.revealed .text-reveal-inner {
    transform: translateY(0);
}

/* Split Text Animation */
.split-text .char {
    display: inline-block;
    opacity: 0;
    transform: translateY(40px) rotate(5deg);
    transition: all 0.6s var(--ease-out-expo);
}

.split-text.animate .char {
    opacity: 1;
    transform: translateY(0) rotate(0deg);
}

.section-header {
    margin-bottom: var(--space-16);
}

.section-header.centered {
    text-align: center;
}

.section-header.centered .section-label {
    justify-content: center;
}

.section-header.centered .section-label::before {
    display: none;
}

.section-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 540px;
    line-height: 1.65;
}

.section-header.centered .section-description {
    margin: 0 auto;
}

/* ========================================
   6. NAVIGATION
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

.navbar.scrolled {
    background-color: var(--navbar-scrolled-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--navbar-scrolled-border);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-5) var(--space-8);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
    position: relative;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-text-primary);
    transition: width var(--transition-base);
}

.logo:hover::after {
    width: 100%;
}

.logo-dot {
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.logo:hover .logo-dot {
    color: var(--color-success);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-8);
    align-items: center;
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: 450;
    color: var(--color-text-secondary);
    letter-spacing: 0.01em;
    transition: color var(--transition-fast);
    position: relative;
    padding: var(--space-2) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-text-primary);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link-cta {
    background: var(--color-text-primary);
    color: var(--color-bg) !important;
    padding: var(--space-2) var(--space-5) !important;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-link-cta::after { display: none; }

.nav-link-cta:hover {
    background: var(--color-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-left: var(--space-4);
}

.nav-socials {
    display: flex;
    gap: var(--space-1);
}

.social-icon {
    color: var(--color-text-tertiary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2);
    border-radius: var(--radius-sm);
    width: 36px;
    height: 36px;
    position: relative;
}

.social-icon::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-accent);
    border-radius: inherit;
    transform: scale(0);
    transition: transform var(--transition-fast);
}

.social-icon:hover::before {
    transform: scale(1);
}

.social-icon svg {
    position: relative;
    z-index: 1;
}

.social-icon:hover {
    color: var(--color-text-primary);
}

/* Tooltip */
.social-icon[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: -32px;
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    background: var(--color-text-primary);
    color: var(--color-bg);
    font-size: 11px;
    font-weight: 500;
    padding: 4px 8px;
    border-radius: var(--radius-xs);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    pointer-events: none;
}

.social-icon[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* Theme Toggle - matches nav socials */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    background: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    position: relative;
    transition: color var(--transition-fast), transform var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.theme-toggle::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-accent);
    border-radius: inherit;
    transform: scale(0);
    transition: transform var(--transition-fast);
}

.theme-toggle:hover::before {
    transform: scale(1);
}

.theme-toggle:hover {
    color: var(--color-text-primary);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--color-text-primary);
    outline-offset: 3px;
}

.theme-toggle svg {
    position: relative;
    z-index: 1;
    width: 18px;
    height: 18px;
    transition: transform var(--transition-base), opacity var(--transition-fast);
}

.theme-toggle .theme-icon-sun {
    position: absolute;
    opacity: 0;
}

.theme-toggle .theme-icon-moon {
    opacity: 1;
}

[data-theme="dark"] .theme-toggle .theme-icon-sun {
    opacity: 1;
}

[data-theme="dark"] .theme-toggle .theme-icon-moon {
    opacity: 0;
}

.theme-toggle:active svg {
    transform: scale(0.92);
}

/* Mobile Menu */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    padding: var(--space-2);
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
}

.menu-toggle span {
    width: 20px;
    height: 1.5px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-fast);
    transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 5px);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -5px);
}

/* ========================================
   7. HERO SECTION
   ======================================== */

.hero {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    padding: var(--space-32) 0 var(--space-24);
    position: relative;
    overflow: hidden;
}

/* Subtle Grid Background */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0,0,0,0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.015) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 70%);
}

/* Noise Texture Overlay */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.015;
    pointer-events: none;
}

.hero-content {
    max-width: 900px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.hero-badge:hover {
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    position: relative;
}

.status-dot::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    background: var(--color-success);
    opacity: 0.3;
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.3);
        opacity: 0;
    }
}

.hero-greeting {
    font-size: var(--text-sm);
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.hero-greeting::before {
    content: '';
    width: 40px;
    height: 1px;
    background: var(--color-text-tertiary);
}

.hero-name {
    font-size: var(--text-7xl);
    font-weight: 600;
    margin-bottom: var(--space-6);
    letter-spacing: -0.04em;
    line-height: 0.92;
    background: linear-gradient(
        135deg,
        var(--color-text-primary) 0%,
        var(--color-text-secondary) 50%,
        var(--color-text-primary) 100%
    );
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 8s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-roles {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.role-item {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    font-weight: 400;
    transition: color var(--transition-fast);
}

.role-item:hover {
    color: var(--color-text-primary);
}

.role-divider {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--color-border);
}

.hero-tagline {
    font-size: var(--text-lg);
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-10);
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

/* Hero Social Links */
.hero-socials {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border-subtle);
}

.hero-socials-label {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    font-weight: 450;
}

.hero-socials-links {
    display: flex;
    gap: var(--space-2);
}

.hero-social-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.hero-social-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-accent);
    transform: translateY(100%);
    transition: transform var(--transition-fast);
}

.hero-social-link:hover::before {
    transform: translateY(0);
}

.hero-social-link:hover {
    color: var(--color-text-primary);
}

.hero-social-link svg,
.hero-social-link span {
    position: relative;
    z-index: 1;
}

.hero-social-link svg {
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.hero-social-link:hover svg {
    transform: translateY(-2px);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-4);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text-tertiary);
    font-size: var(--text-xs);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--color-text-tertiary), transparent);
    position: relative;
    overflow: hidden;
}

.scroll-line::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 16px;
    background: var(--color-text-primary);
    animation: scrollDrop 2s ease-in-out infinite;
}

@keyframes scrollDrop {
    0% { top: -16px; opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { top: 48px; opacity: 0; }
}

/* ========================================
   8. BUTTONS - Magnetic Effect
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-6);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 500;
    letter-spacing: 0.01em;
    border: none;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.btn svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.btn-primary {
    background: var(--color-text-primary);
    color: var(--color-bg);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow:
        0 4px 6px rgba(0, 0, 0, 0.1),
        0 10px 20px rgba(0, 0, 0, 0.15);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:hover svg {
    transform: translateX(4px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 1.5px solid var(--color-border);
}

.btn-secondary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
    z-index: -1;
}

.btn-secondary:hover::before {
    transform: scaleX(1);
}

.btn-secondary:hover {
    border-color: var(--color-text-primary);
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--color-border);
    color: var(--color-text-secondary);
}

.btn-outline:hover:not(.disabled) {
    border-color: var(--color-text-primary);
    color: var(--color-text-primary);
}

.btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
}

.btn-sm svg {
    width: 16px;
    height: 16px;
}

/* Spinner */
.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ========================================
   9. ABOUT SECTION
   ======================================== */

.about {
    padding: var(--space-24) 0;
    background: var(--color-bg-elevated);
    position: relative;
}

.about-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--space-16);
    align-items: start;
}

.about-image {
    position: sticky;
    top: 120px;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 3/4;
    background: linear-gradient(
        145deg,
        var(--color-accent) 0%,
        var(--color-bg) 50%,
        var(--color-accent) 100%
    );
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-tertiary);
    position: relative;
    z-index: 1;
    overflow: hidden;
    transition: all var(--transition-base);
}

.image-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    transition: transform 0.6s var(--ease-out-expo);
}

.image-placeholder:hover img {
    transform: scale(1.04);
}

.image-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        transparent 40%,
        rgba(255,255,255,0.15) 50%,
        transparent 60%
    );
    transform: translateX(-100%);
    transition: transform 0.8s var(--ease-out-expo);
    z-index: 2;
    pointer-events: none;
}

.image-placeholder:hover::before {
    transform: translateX(100%);
}

.about-image-decoration {
    position: absolute;
    top: var(--space-4);
    left: var(--space-4);
    right: calc(-1 * var(--space-4));
    bottom: calc(-1 * var(--space-4));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    z-index: 0;
    transition: all var(--transition-base);
}

.about-image:hover .about-image-decoration {
    transform: translate(4px, 4px);
}

.about-bio {
    margin-bottom: var(--space-8);
}

.about-bio p {
    margin-bottom: var(--space-5);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.about-bio p:first-child::first-letter {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 600;
    float: left;
    line-height: 1;
    margin-right: var(--space-3);
    margin-top: 6px;
    color: var(--color-text-primary);
}

.about-details {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.about-detail-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    padding: var(--space-2) var(--space-4);
    background: var(--color-accent);
    border-radius: var(--radius-full);
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.about-detail-item:hover {
    border-color: var(--color-border);
    background: var(--color-bg-elevated);
}

.about-detail-item svg {
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.about-detail-item:hover svg {
    color: var(--color-text-primary);
}

.about-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
}

/* ========================================
   10. EXPERIENCE & EDUCATION TIMELINE
   ======================================== */

.experience,
.education {
    padding: var(--space-24) 0;
}

.experience { background: var(--color-bg); }
.education { background: var(--color-bg-elevated); }

.certifications {
    padding: var(--space-24) 0;
    background: var(--color-bg-elevated);
}

.certifications .timeline-header {
    justify-content: flex-start;
    flex-wrap: nowrap;
}

.certifications .cert-badge {
    height: 36px;
    width: auto;
    flex-shrink: 0;
    filter: grayscale(100%);
    opacity: 0.9;
    transition: filter var(--transition-fast), opacity var(--transition-fast), transform var(--transition-fast);
}

.certifications .timeline-item:hover .cert-badge {
    filter: grayscale(0%);
    opacity: 1;
    transform: translateY(-1px);
}

@media (max-width: 480px) {
    .certifications .timeline-header {
        flex-wrap: wrap;
    }

    .certifications .cert-badge {
        height: 32px;
    }
}

.timeline {
    position: relative;
    max-width: 800px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(
        to bottom,
        transparent,
        var(--timeline-line) 10%,
        var(--timeline-line) 90%,
        transparent
    );
}

.timeline-item {
    position: relative;
    padding-left: var(--space-12);
    padding-bottom: var(--space-12);
}

.timeline-item:last-child { padding-bottom: 0; }

/* Timeline Dot */
.timeline-item::before {
    content: '';
    position: absolute;
    left: -5px;
    top: 6px;
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--color-bg);
    border: 2px solid var(--timeline-dot);
    z-index: 2;
    transition: all var(--transition-fast);
}

/* Timeline Ring */
.timeline-item::after {
    content: '';
    position: absolute;
    left: -11px;
    top: 0;
    width: 23px;
    height: 23px;
    border-radius: 50%;
    background: var(--timeline-dot-ring);
    z-index: 1;
    transform: scale(0);
    transition: transform var(--transition-base);
}

.timeline-item:hover::after { transform: scale(1); }
.timeline-item:hover::before {
    background: var(--timeline-dot);
    transform: scale(1.1);
}

.timeline-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-2);
}

.timeline-date {
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    background: var(--color-accent);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-sm);
}

.timeline-status {
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-success);
    background: rgba(16, 185, 129, 0.08);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-sm);
}

.timeline-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-1);
}

.timeline-subtitle {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-bottom: var(--space-2);
}

.timeline-location {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
}

.timeline-location svg {
    width: 14px;
    height: 14px;
}

.timeline-description {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.75;
}

.timeline-description ul {
    list-style: none;
    margin-top: var(--space-3);
}

.timeline-description li {
    position: relative;
    padding-left: var(--space-5);
    margin-bottom: var(--space-2);
}

.timeline-description li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.7em;
    width: 6px;
    height: 1px;
    background: var(--color-text-tertiary);
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-4);
}

.timeline-tag {
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-3);
    background: var(--color-accent);
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.timeline-tag:hover {
    background: var(--color-text-primary);
    color: var(--color-bg);
}

/* ========================================
   11. PROJECTS SECTION
   ======================================== */

.projects {
    padding: var(--space-24) 0;
    background: var(--color-bg);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

.project-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--color-border-hover);
}

.project-image {
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--color-accent);
    position: relative;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.08);
}

.image-placeholder-project {
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        var(--color-accent) 0%,
        var(--color-border-subtle) 50%,
        var(--color-accent) 100%
    );
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-tertiary);
    transition: all var(--transition-base);
}

.project-card:hover .image-placeholder-project {
    background: linear-gradient(
        135deg,
        var(--color-border-subtle) 0%,
        var(--color-accent) 50%,
        var(--color-border-subtle) 100%
    );
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(10, 10, 10, 0.9) 0%,
        rgba(10, 10, 10, 0.7) 100%
    );
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
    color: inherit;
    text-decoration: none;
}

.project-overlay span {
    color: white;
    font-size: var(--text-sm);
    font-weight: 500;
    padding: var(--space-3) var(--space-5);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    transform: translateY(10px);
    transition: all var(--transition-base);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-card:hover .project-overlay span {
    transform: translateY(0);
}

.project-content {
    padding: var(--space-6);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-3);
}

.project-tag {
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
}

.project-year {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
}

.project-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
    font-weight: 600;
    transition: color var(--transition-fast);
}

.project-card:hover .project-title {
    color: var(--color-text-secondary);
}

.project-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-5);
    font-size: var(--text-sm);
    line-height: 1.7;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-5);
}

.tech-badge {
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-3);
    background: var(--color-accent);
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.tech-badge:hover {
    background: var(--color-text-primary);
    color: var(--color-bg);
}

.project-links {
    display: flex;
    gap: var(--space-5);
    padding-top: var(--space-5);
    border-top: 1px solid var(--color-border-subtle);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.project-link svg {
    transition: transform var(--transition-fast);
}

.project-link:hover:not(.disabled) {
    color: var(--color-text-secondary);
}

.project-link:hover:not(.disabled) svg {
    transform: translate(2px, -2px);
}

.project-link.disabled {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
}

/* Project Placeholder Card */
.project-card-placeholder {
    border-style: dashed;
    background: transparent;
}

.project-card-placeholder:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--color-text-tertiary);
}

.project-placeholder-content {
    padding: var(--space-12);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

.project-placeholder-icon {
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-5);
    opacity: 0.5;
    transition: all var(--transition-base);
}

.project-card-placeholder:hover .project-placeholder-icon {
    opacity: 1;
    transform: rotate(90deg);
}

.project-placeholder-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-3);
}

.project-placeholder-text {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-6);
    max-width: 280px;
}

/* ========================================
   12. SKILLS SECTION
   ======================================== */

.skills {
    padding: var(--space-24) 0;
    background: var(--color-bg-elevated);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-12);
}

.skill-category {
    text-align: center;
    padding: var(--space-8);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-text-primary), transparent);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.skill-category:hover::before {
    transform: scaleX(1);
}

.skill-category:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-border-hover);
}

.skill-category-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-5);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.skill-category:hover .skill-category-icon {
    background: var(--color-text-primary);
    color: var(--color-bg);
    transform: scale(1.1);
}

.skill-category-icon svg {
    width: 28px;
    height: 28px;
}

.skill-category-title {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    margin-bottom: var(--space-5);
    font-weight: 600;
}

.skill-list {
    list-style: none;
}

.skill-list li {
    padding: var(--space-3) 0;
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    border-bottom: 1px solid var(--color-border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
}

.skill-list li:hover {
    color: var(--color-text-primary);
    padding-left: var(--space-2);
}

.skill-list li:last-child { border-bottom: none; }

.skill-level {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    font-weight: 500;
    padding: 2px 8px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
}

/* LeetCode Banner */
.leetcode-banner {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: all var(--transition-base);
}

.leetcode-banner:hover {
    border-color: #FFA116;
    box-shadow: 0 0 0 1px #FFA116;
}

.leetcode-banner-content {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.leetcode-banner-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #FFA116 0%, #FFB347 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.leetcode-banner:hover .leetcode-banner-icon {
    transform: scale(1.05) rotate(-3deg);
}

.leetcode-banner-text {
    flex: 1;
}

.leetcode-banner-text h4 {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    margin-bottom: var(--space-1);
}

.leetcode-banner-text p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* ========================================
   13. CONTACT SECTION
   ======================================== */

.contact {
    padding: var(--space-24) 0;
    background: var(--color-bg);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: start;
}

.contact-info .section-title {
    margin-bottom: var(--space-5);
}

.contact-description {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-8);
}

.contact-methods {
    margin-bottom: var(--space-8);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.contact-method:hover {
    border-color: var(--color-text-primary);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.contact-method-icon {
    width: 48px;
    height: 48px;
    background: var(--color-accent);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.contact-method:hover .contact-method-icon {
    background: var(--color-text-primary);
    color: var(--color-bg);
}

.contact-method-text {
    display: flex;
    flex-direction: column;
}

.contact-method-label {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-method-value {
    font-size: var(--text-base);
    color: var(--color-text-primary);
    font-weight: 500;
}

.contact-socials-label {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
}

.contact-socials-links {
    display: flex;
    gap: var(--space-3);
}

.contact-social-link {
    width: 48px;
    height: 48px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.contact-social-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-text-primary);
    transform: translateY(100%);
    transition: transform var(--transition-fast);
}

.contact-social-link svg {
    position: relative;
    z-index: 1;
    transition: color var(--transition-fast);
}

.contact-social-link:hover::before {
    transform: translateY(0);
}

.contact-social-link:hover {
    border-color: var(--color-text-primary);
}

.contact-social-link:hover svg {
    color: var(--color-bg);
}

.contact-form-wrapper {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    transition: all var(--transition-base);
}

.contact-form-wrapper:focus-within {
    border-color: var(--color-text-primary);
    box-shadow: 0 0 0 3px var(--color-focus);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.form-group {
    position: relative;
}

.form-group label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    margin-bottom: var(--space-2);
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

.form-group:focus-within label {
    color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-4);
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--color-text-primary);
    background: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-group input:hover,
.form-group textarea:hover {
    border-color: var(--color-border-hover);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-text-primary);
    box-shadow: 0 0 0 3px var(--color-focus);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Input Error State */
.form-group input.error,
.form-group textarea.error {
    border-color: #ef4444;
    background-color: #fef2f2;
}

.form-group input.error:focus,
.form-group textarea.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.submit-btn {
    width: 100%;
    padding: var(--space-5);
    margin-top: var(--space-3);
}

.form-message {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    text-align: center;
    font-size: var(--text-sm);
    font-weight: 500;
}

.form-message.success {
    color: #166534;
    background: #dcfce7;
    border: 1px solid #86efac;
}

.form-message.error {
    color: #991b1b;
    background: #fee2e2;
    border: 1px solid #fecaca;
}

/* ========================================
   14. FOOTER
   ======================================== */

.footer {
    padding: var(--space-16) 0 var(--space-8);
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr auto;
    gap: var(--space-12);
    padding-bottom: var(--space-12);
    border-bottom: 1px solid var(--color-border-subtle);
    margin-bottom: var(--space-8);
}

.footer-brand {
    max-width: 320px;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
    display: inline-block;
    transition: all var(--transition-fast);
}

.footer-logo:hover {
    opacity: 0.7;
}

.footer-tagline {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    line-height: 1.65;
}

.footer-links {
    display: flex;
    gap: var(--space-12);
}

.footer-links-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links-title {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-2);
}

.footer-links-group a {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    position: relative;
}

.footer-links-group a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-text-primary);
    transition: width var(--transition-base);
}

.footer-links-group a:hover {
    color: var(--color-text-primary);
}

.footer-links-group a:hover::after {
    width: 100%;
}

.footer-socials {
    display: flex;
    gap: var(--space-2);
}

.footer-socials .social-icon {
    background: var(--color-accent);
}

.footer-socials .social-icon:hover {
    background: var(--color-text-primary);
    color: var(--color-bg);
}

.footer-socials .social-icon:hover::before {
    display: none;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.copyright-year {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    font-variant-numeric: tabular-nums;
}

/* ========================================
   15. UTILITIES
   ======================================== */

.hidden { display: none !important; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Magnetic Button Wrapper */
.magnetic {
    display: inline-block;
}

/* ========================================
   16. ANIMATIONS
   ======================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* AOS - Animate on Scroll */
[data-aos] {
    transition-property: opacity, transform;
    transition-duration: 0.8s;
    transition-timing-function: var(--ease-out-expo);
}

[data-aos="fade-up"] {
    opacity: 0;
    transform: translateY(40px);
}

[data-aos="fade-up"].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

[data-aos="fade-in"] {
    opacity: 0;
}

[data-aos="fade-in"].aos-animate {
    opacity: 1;
}

[data-aos-delay="100"] { transition-delay: 0.1s; }
[data-aos-delay="200"] { transition-delay: 0.2s; }
[data-aos-delay="300"] { transition-delay: 0.3s; }
[data-aos-delay="400"] { transition-delay: 0.4s; }

/* Hero Stagger Animation */
.hero-content > * {
    opacity: 0;
    animation: fadeInUp 1s var(--ease-out-expo) forwards;
}

.hero-badge { animation-delay: 0s; }
.hero-greeting { animation-delay: 0.1s; }
.hero-name { animation-delay: 0.2s; }
.hero-roles { animation-delay: 0.35s; }
.hero-tagline { animation-delay: 0.5s; }
.hero-cta { animation-delay: 0.65s; }
.hero-socials { animation-delay: 0.8s; }

/* Timeline Animation */
.timeline-item {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.7s var(--ease-out-expo);
}

.timeline-item.aos-animate {
    opacity: 1;
    transform: translateX(0);
}

.timeline-item:nth-child(1) { transition-delay: 0s; }
.timeline-item:nth-child(2) { transition-delay: 0.15s; }
.timeline-item:nth-child(3) { transition-delay: 0.3s; }
.timeline-item:nth-child(4) { transition-delay: 0.45s; }

/* ========================================
   17. RESPONSIVE - GOD-TIER MOBILE FIRST
   ======================================== */

/* Large Desktop (1400px+) */
@media (min-width: 1400px) {
    .container {
        max-width: var(--container-wide);
    }

    .hero-name {
        font-size: clamp(4rem, 5vw + 2rem, 8rem);
    }

    .projects-grid {
        gap: var(--space-10);
    }
}

/* Desktop to Tablet (1024px - 1199px) */
@media (max-width: 1199px) {
    .nav-menu {
        gap: var(--space-6);
    }

    .hero-content {
        max-width: 800px;
    }

    .about-content {
        gap: var(--space-12);
    }

    .footer-content {
        grid-template-columns: 1.2fr 1fr auto;
        gap: var(--space-8);
    }
}

/* Tablet Landscape (768px - 1023px) */
@media (max-width: 1023px) {
    .container {
        padding: 0 var(--space-6);
    }

    /* Navigation */
    .nav-container {
        padding: var(--space-4) var(--space-6);
    }

    .nav-menu {
        gap: var(--space-5);
    }

    .nav-socials {
        display: none;
    }

    /* Hero */
    .hero {
        padding: var(--space-24) 0 var(--space-20);
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-tagline {
        max-width: 100%;
    }

    /* About */
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }

    .about-image {
        position: static;
        max-width: 280px;
        margin: 0 auto;
    }

    .about-text {
        text-align: center;
    }

    .about-bio p:first-child::first-letter {
        float: none;
        font-size: var(--text-3xl);
        margin-right: 0;
    }

    .about-details {
        justify-content: center;
    }

    .about-cta {
        justify-content: center;
    }

    .section-label::before {
        display: none;
    }

    /* Timeline */
    .timeline {
        max-width: 100%;
    }

    /* Skills */
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-5);
    }

    /* Projects */
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .project-card {
        max-width: 600px;
        margin: 0 auto;
    }

    /* Contact */
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }

    .contact-info {
        text-align: center;
    }

    .contact-info .section-title {
        text-align: center;
    }

    .contact-info .section-title br {
        display: none;
    }

    .contact-methods {
        max-width: 400px;
        margin: 0 auto var(--space-8);
    }

    .contact-socials {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .contact-socials-links {
        justify-content: center;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
        text-align: center;
    }

    .footer-brand {
        max-width: 100%;
    }

    .footer-links {
        justify-content: center;
        gap: var(--space-12);
    }

    .footer-socials {
        justify-content: center;
    }
}

/* Tablet Portrait & Large Mobile (600px - 767px) */
@media (max-width: 767px) {
    .container {
        padding: 0 var(--space-5);
    }

    /* Hide custom cursor on touch devices */
    .cursor {
        display: none !important;
    }

    /* Navigation - Mobile Menu */
    .nav-container {
        padding: var(--space-4) var(--space-5);
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        bottom: 0;
        flex-direction: column;
        background: var(--color-bg-elevated);
        border-top: 1px solid var(--color-border);
        padding: var(--space-6);
        gap: 0;
        transform: translateY(-110%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        overflow-y: auto;
        z-index: 999;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu li {
        border-bottom: 1px solid var(--color-border-subtle);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-link {
        display: block;
        padding: var(--space-4) 0;
        font-size: var(--text-lg);
        font-weight: 500;
    }

    .nav-link::after {
        display: none;
    }

    .nav-link-cta {
        margin-top: var(--space-4);
        padding: var(--space-4) var(--space-6) !important;
        text-align: center;
        display: block;
    }

    .nav-socials {
        display: none;
    }

    .nav-right {
        margin-left: var(--space-2);
    }

    .menu-toggle {
        display: flex;
    }

    /* Hero Section */
    .hero {
        padding: var(--space-20) 0 var(--space-16);
        min-height: auto;
    }

    .hero::before {
        background-size: 60px 60px;
    }

    .hero-badge {
        font-size: var(--text-xs);
        padding: var(--space-2) var(--space-3);
        margin-bottom: var(--space-6);
    }

    .hero-greeting {
        font-size: var(--text-xs);
        margin-bottom: var(--space-3);
    }

    .hero-greeting::before {
        width: 24px;
    }

    .hero-name {
        font-size: clamp(2.5rem, 10vw, 4rem);
        line-height: 1;
        margin-bottom: var(--space-5);
    }

    .hero-roles {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
        margin-bottom: var(--space-5);
    }

    .role-divider {
        display: none;
    }

    .role-item {
        font-size: var(--text-base);
    }

    .hero-tagline {
        font-size: var(--text-base);
        margin-bottom: var(--space-8);
        line-height: 1.6;
    }

    .hero-cta {
        flex-direction: column;
        gap: var(--space-3);
        margin-bottom: var(--space-10);
    }

    .hero-cta .btn {
        width: 100%;
        justify-content: center;
        padding: var(--space-4) var(--space-6);
    }

    .hero-socials {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
        padding-top: var(--space-6);
    }

    .hero-socials-label {
        font-size: var(--text-xs);
    }

    .hero-socials-links {
        display: flex;
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .hero-social-link {
        padding: var(--space-2);
    }

    .hero-social-link span {
        display: none;
    }

    .scroll-indicator {
        display: none;
    }

    /* Section Headers */
    .section-header {
        margin-bottom: var(--space-10);
    }

    .section-title {
        font-size: var(--text-3xl);
    }

    .section-title br {
        display: none;
    }

    .section-description {
        font-size: var(--text-base);
    }

    /* About Section */
    .about {
        padding: var(--space-16) 0;
    }

    .about-image {
        max-width: 220px;
    }

    .about-bio p {
        font-size: var(--text-sm);
        line-height: 1.7;
    }

    .about-details {
        gap: var(--space-3);
    }

    .about-detail-item {
        font-size: var(--text-xs);
        padding: var(--space-2) var(--space-3);
    }

    .about-cta {
        flex-direction: column;
        gap: var(--space-3);
    }

    .about-cta .btn {
        width: 100%;
        justify-content: center;
    }

    /* Experience & Education */
    .experience,
    .education,
    .certifications {
        padding: var(--space-16) 0;
    }

    .timeline::before {
        left: 0;
    }

    .timeline-item {
        padding-left: var(--space-8);
        padding-bottom: var(--space-8);
    }

    .timeline-item::before {
        left: -4px;
        width: 9px;
        height: 9px;
    }

    .timeline-item::after {
        left: -9px;
        width: 19px;
        height: 19px;
    }

    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }

    .timeline-title {
        font-size: var(--text-lg);
    }

    .timeline-subtitle {
        font-size: var(--text-sm);
    }

    .timeline-description {
        font-size: var(--text-sm);
    }

    .timeline-tags {
        gap: var(--space-2);
    }

    .timeline-tag {
        font-size: 0.6875rem;
        padding: 2px var(--space-2);
    }

    /* Projects Section */
    .projects {
        padding: var(--space-16) 0;
    }

    .project-card {
        max-width: 100%;
    }

    .project-content {
        padding: var(--space-5);
    }

    .project-title {
        font-size: var(--text-lg);
    }

    .project-description {
        font-size: var(--text-sm);
    }

    .project-tech {
        gap: var(--space-2);
    }

    .tech-badge {
        font-size: 0.6875rem;
        padding: 2px var(--space-2);
    }

    .project-links {
        flex-wrap: wrap;
        gap: var(--space-4);
        padding-top: var(--space-4);
    }

    .project-placeholder-content {
        padding: var(--space-8);
        min-height: 300px;
    }

    /* Skills Section */
    .skills {
        padding: var(--space-16) 0;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .skill-category {
        padding: var(--space-6);
    }

    .skill-category-icon {
        width: 48px;
        height: 48px;
        margin-bottom: var(--space-4);
    }

    .skill-category-icon svg {
        width: 24px;
        height: 24px;
    }

    .skill-category-title {
        font-size: var(--text-base);
        margin-bottom: var(--space-4);
    }

    .skill-list li {
        font-size: var(--text-sm);
        padding: var(--space-2) 0;
    }

    .skill-level {
        font-size: 0.625rem;
        padding: 2px 6px;
    }

    /* LeetCode Banner */
    .leetcode-banner {
        padding: var(--space-5);
    }

    .leetcode-banner-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-4);
    }

    .leetcode-banner-icon {
        width: 56px;
        height: 56px;
    }

    .leetcode-banner-icon svg {
        width: 28px;
        height: 28px;
    }

    .leetcode-banner-text h4 {
        font-size: var(--text-base);
    }

    .leetcode-banner-text p {
        font-size: var(--text-sm);
    }

    /* Contact Section */
    .contact {
        padding: var(--space-16) 0;
    }

    .contact-description {
        font-size: var(--text-sm);
    }

    .contact-method {
        padding: var(--space-3);
    }

    .contact-method-icon {
        width: 44px;
        height: 44px;
    }

    .contact-method-value {
        font-size: var(--text-sm);
        word-break: break-all;
    }

    .contact-socials-links {
        gap: var(--space-2);
    }

    .contact-social-link {
        width: 44px;
        height: 44px;
    }

    .contact-form-wrapper {
        padding: var(--space-5);
    }

    .form-group input,
    .form-group textarea {
        padding: var(--space-3);
        font-size: var(--text-sm);
    }

    .submit-btn {
        padding: var(--space-4);
    }

    /* Footer */
    .footer {
        padding: var(--space-12) 0 var(--space-6);
    }

    .footer-content {
        padding-bottom: var(--space-8);
        margin-bottom: var(--space-6);
    }

    .footer-tagline {
        font-size: var(--text-sm);
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-6);
    }

    .footer-links-group {
        align-items: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-2);
        text-align: center;
    }

    .copyright {
        font-size: var(--text-xs);
    }
}

/* Small Mobile (320px - 479px) */
@media (max-width: 479px) {
    .container {
        padding: 0 var(--space-4);
    }

    /* Hero */
    .hero {
        padding: var(--space-16) 0 var(--space-12);
    }

    .hero-name {
        font-size: clamp(2rem, 12vw, 3rem);
    }

    .hero-badge {
        font-size: 0.6875rem;
    }

    /* Section Titles */
    .section-title {
        font-size: var(--text-2xl);
    }

    /* About */
    .about-image {
        max-width: 180px;
    }

    .image-placeholder svg {
        width: 60px;
        height: 60px;
    }

    .about-image-decoration {
        top: var(--space-3);
        left: var(--space-3);
        right: calc(-1 * var(--space-3));
        bottom: calc(-1 * var(--space-3));
    }

    /* Timeline */
    .timeline-item {
        padding-left: var(--space-6);
    }

    .timeline-date,
    .timeline-status {
        font-size: 0.625rem;
    }

    /* Projects */
    .project-image {
        aspect-ratio: 16/9;
    }

    .project-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-1);
    }

    /* Skills */
    .skill-category {
        padding: var(--space-5);
    }

    /* Contact */
    .contact-method {
        flex-direction: column;
        text-align: center;
        gap: var(--space-3);
    }

    .contact-method-value {
        font-size: var(--text-xs);
    }

    .contact-socials-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    /* Footer */
    .footer-socials {
        flex-wrap: wrap;
    }
}

/* Extra Small Mobile (320px) */
@media (max-width: 359px) {
    .container {
        padding: 0 var(--space-3);
    }

    .hero-name {
        font-size: 1.75rem;
    }

    .hero-cta .btn {
        font-size: var(--text-sm);
        padding: var(--space-3) var(--space-4);
    }

    .nav-container {
        padding: var(--space-3) var(--space-3);
    }

    .logo {
        font-size: var(--text-base);
    }

    .timeline-title {
        font-size: var(--text-base);
    }

    .project-title {
        font-size: var(--text-base);
    }
}

/* Landscape Mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: var(--space-16) 0 var(--space-10);
    }

    .hero-name {
        font-size: clamp(2rem, 8vw, 3rem);
        margin-bottom: var(--space-4);
    }

    .hero-tagline {
        margin-bottom: var(--space-6);
    }

    .hero-socials {
        padding-top: var(--space-4);
    }

    .nav-menu {
        padding: var(--space-4);
    }

    .nav-link {
        padding: var(--space-2) 0;
        font-size: var(--text-base);
    }
}

/* High DPI / Retina Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hero::before {
        background-size: 80px 80px;
    }
}

/* ========================================
   18. PRINT STYLES
   ======================================== */

@media print {
    .navbar,
    .scroll-indicator,
    .scroll-progress,
    .cursor {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }

    .hero {
        min-height: auto;
        padding: 2rem 0;
    }

    .container {
        max-width: 100%;
        padding: 0 1rem;
    }

    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }
}