/* ==========================================================================
   RETROFUTURISTIC PORTFOLIO — DESIGN SYSTEM
   2026 Design Trends: Neo-Brutalism + Cloud Dancer + Holographic
   ========================================================================== */

/* ── CSS Custom Properties (Design Tokens) ── */
:root {
    /* Cloud Dancer Palette */
    --cloud-white: #F0EDE5;
    --cloud-cream: #FAF8F3;
    --cloud-warm: #E8E4DB;

    /* Neo-Brutalist Accents */
    --neo-black: #0A0A0A;
    --neo-charcoal: #1A1A2E;
    --neo-deep: #16213E;
    --neo-violet: #7B2FFF;
    --neo-cyan: #00F5D4;
    --neo-magenta: #FF006E;
    --neo-amber: #FFB800;

    /* Holographic Spectrum */
    --holo-1: #a855f7;
    --holo-2: #06b6d4;
    --holo-3: #f43f5e;
    --holo-4: #10b981;
    --holo-gradient: linear-gradient(135deg, var(--holo-1), var(--holo-2), var(--holo-3));
    --holo-gradient-reverse: linear-gradient(315deg, var(--holo-3), var(--holo-2), var(--holo-1));

    /* Dark Theme (Default) */
    --bg-primary: #0A0A0F;
    --bg-secondary: #111118;
    --bg-tertiary: #1A1A25;
    --text-primary: #F0EDE5;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;
    --glass-bg: rgba(26, 26, 46, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-hover: rgba(255, 255, 255, 0.15);
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-bg-hover: rgba(255, 255, 255, 0.06);
    --nav-bg: rgba(10, 10, 15, 0.72);
    --shadow-color: rgba(0, 0, 0, 0.4);
    --grain-opacity: 0.035;


    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;

    /* Sizes */
    --nav-height: 80px;
    --container-max: 1200px;
    --container-narrow: 900px;
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --border-radius-lg: 24px;
    --border-radius-xl: 32px;
    --border-radius-pill: 100px;

    /* Transitions */
    --ease-out-expo: cubic-bezier(0.23, 1, 0.32, 1);
    --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --duration-fast: 200ms;
    --duration-normal: 400ms;
    --duration-slow: 700ms;
    --duration-cinematic: 1000ms;
}

/* ── Light Theme (Cloud Dancer) ── */
[data-theme="light"] {
    --bg-primary: #FAF8F3;
    --bg-secondary: #F0EDE5;
    --bg-tertiary: #E8E4DB;
    --text-primary: #0A0A0A;
    --text-secondary: #4B5563;
    --text-muted: #9CA3AF;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.08);
    --glass-border-hover: rgba(0, 0, 0, 0.15);
    --card-bg: rgba(0, 0, 0, 0.03);
    --card-bg-hover: rgba(0, 0, 0, 0.06);
    --nav-bg: rgba(250, 248, 243, 0.78);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --grain-opacity: 0.02;

}

/* ── Reset & Base ── */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;

    transition: background-color var(--duration-slow) var(--ease-out-expo),
                color var(--duration-slow) var(--ease-out-expo);
}



::selection {
    background: var(--neo-violet);
    color: #fff;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ── Custom Scrollbar ── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--holo-1), var(--holo-2));
    border-radius: 10px;
}

/* ── Three.js Canvas ── */
#three-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
}

/* ── Film Grain Overlay ── */
.grain-overlay {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    z-index: 1;
    pointer-events: none;
    opacity: var(--grain-opacity);
    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='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
    background-size: 256px 256px;
    mix-blend-mode: overlay;
    animation: grain-shift 0.5s steps(4) infinite;
}

@keyframes grain-shift {
    0% { transform: translate(0, 0); }
    25% { transform: translate(-5%, -5%); }
    50% { transform: translate(5%, 5%); }
    75% { transform: translate(-2%, 3%); }
    100% { transform: translate(0, 0); }
}



/* ── Navigation (Glassmorphism) ── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5%;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    transition: background var(--duration-normal) var(--ease-smooth),
                border-color var(--duration-normal) var(--ease-smooth),
                box-shadow var(--duration-normal) var(--ease-smooth);
}

.navbar.scrolled {
    box-shadow: 0 4px 30px var(--shadow-color);
    border-bottom-color: var(--glass-border-hover);
}

/* Logo */
.logo {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 2px;
    cursor: pointer;
    z-index: 1001;
}

.code-tag {
    color: var(--neo-cyan);
    transition: color var(--duration-normal) var(--ease-smooth);
}

.logo-text {
    background: var(--holo-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Nav Links */
.nav-links {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 8px;
}

.nav-item {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--border-radius-pill);
    cursor: pointer;
    position: relative;
    transition: color var(--duration-normal) var(--ease-smooth),
                background var(--duration-normal) var(--ease-smooth),
                transform 80ms ease-out;
    will-change: transform;
}

.nav-item:hover {
    color: var(--text-primary);
    background: var(--card-bg-hover);
}

.nav-item.active {
    color: var(--text-primary);
    background: var(--card-bg-hover);
}

.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    border-radius: 2px;
    background: var(--holo-gradient);
}

/* Nav Divider */
.nav-divider {
    width: 1px;
    height: 24px;
    background: var(--glass-border);
    margin: 0 8px;
}

/* Nav Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.95rem;
    transition: all var(--duration-normal) var(--ease-smooth);
}

.theme-toggle:hover {
    color: var(--neo-amber);
    border-color: var(--neo-amber);
    background: rgba(255, 184, 0, 0.1);
    transform: rotate(180deg);
}

.nav-social-link {
    color: var(--text-secondary);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    transition: all var(--duration-normal) var(--ease-smooth);
    cursor: pointer;
}

.nav-social-link:hover {
    color: var(--text-primary);
    background: var(--card-bg-hover);
    transform: translateY(-2px);
}

.hf-icon {
    width: 20px;
    height: 20px;
    transition: transform var(--duration-normal) var(--ease-smooth);
}

.nav-social-link:hover .hf-icon {
    transform: scale(1.15);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.hamburger-line {
    width: 28px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--duration-normal) var(--ease-out-expo);
    transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ── Layout ── */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 5%;
}

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

.section {
    position: relative;
    z-index: 2;
    padding: var(--space-5xl) 0;
    min-height: 60vh;
}

/* ── Section Titles ── */
.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: var(--space-4xl);
    letter-spacing: -0.02em;
}

.holo-text {
    background: var(--holo-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
}

/* ── HERO SECTION ── */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: calc(var(--nav-height) + var(--space-3xl));
    padding-bottom: var(--space-3xl);
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.greeting {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--neo-cyan);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.greeting-wave {
    display: inline-block;
    animation: wave 2.5s ease-in-out infinite;
    transform-origin: 70% 70%;
}

@keyframes wave {
    0%, 60%, 100% { transform: rotate(0deg); }
    10% { transform: rotate(14deg); }
    20% { transform: rotate(-8deg); }
    30% { transform: rotate(14deg); }
    40% { transform: rotate(-4deg); }
    50% { transform: rotate(10deg); }
}

.hero-name {
    font-family: var(--font-heading);
    font-size: clamp(1.6rem, 4vw, 2.8rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.03em;
    white-space: nowrap;
}

.name-accent {
    background: var(--holo-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.1em;
}

.typewriter-container {
    font-family: var(--font-mono);
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    font-weight: 500;
    margin-bottom: var(--space-xl);
    display: flex;
    align-items: center;
    min-height: 2em;
}

.typewriter-prefix {
    color: var(--neo-cyan);
    margin-right: 4px;
}

.cursor-blink {
    color: var(--neo-cyan);
    animation: blink 1s step-end infinite;
    margin-left: 2px;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-2xl);
    max-width: 540px;
}

/* Hero Actions */
.hero-actions {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    border: none;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out-expo);
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

.btn-primary {
    background: var(--holo-gradient);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(168, 85, 247, 0.35);
}

.btn-glow::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    background: var(--holo-gradient);
    z-index: -1;
    filter: blur(12px);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-smooth);
}

.btn-glow:hover::before {
    opacity: 0.6;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--glass-border);
}

.btn-secondary:hover {
    border-color: var(--neo-cyan);
    color: var(--neo-cyan);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 245, 212, 0.15);
}

/* Neo-Brutalist button accent */
.btn-neo {
    border-width: 3px;
    border-color: var(--text-primary);
    font-weight: 700;
    transition: all var(--duration-normal) var(--ease-spring);
}

.btn-neo:hover {
    border-color: var(--neo-cyan);
    box-shadow: 4px 4px 0px var(--neo-cyan);
    transform: translate(-2px, -2px);
}

/* Tech Stack Icons */
.tech-stack {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
}

.tech-stack img {
    width: 38px;
    height: 38px;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-spring);
}

.tech-stack img:hover {
    transform: scale(1.2) translateY(-4px);
    filter: drop-shadow(0 6px 16px rgba(168, 85, 247, 0.3)) brightness(1.15);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    border: 1px solid var(--glass-border);
    max-width: 420px;
    width: 100%;
    aspect-ratio: 3 / 4;
}

.hero-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    transition: transform var(--duration-slow) var(--ease-out-expo);
}

.hero-image-wrapper:hover img {
    transform: scale(1.06);
}

/* Holographic overlay on hero image */
.hero-image-holo {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(168, 85, 247, 0.1) 0%,
        rgba(6, 182, 212, 0.08) 30%,
        transparent 50%,
        rgba(244, 63, 94, 0.06) 70%,
        rgba(168, 85, 247, 0.1) 100%
    );
    pointer-events: none;
    mix-blend-mode: screen;
}

/* Animated ring around hero image */
.hero-image-ring {
    position: absolute;
    inset: -8px;
    border-radius: inherit;
    border: 2px solid transparent;
    background: var(--holo-gradient) border-box;
    mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
    opacity: 0.4;
    animation: ring-rotate 8s linear infinite;
    pointer-events: none;
}

@keyframes ring-rotate {
    0% { filter: hue-rotate(0deg); }
    100% { filter: hue-rotate(360deg); }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-family: var(--font-mono);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--text-muted), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50% { opacity: 1; transform: scaleY(1.3); }
}

/* ── ABOUT SECTION ── */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-4xl);
    align-items: start;
}

.about-image-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    border: 1px solid var(--glass-border);
    width: 100%;
    max-width: 360px;
}

.about-image-wrapper img {
    width: 100%;
    height: auto;
    transition: transform var(--duration-slow) var(--ease-out-expo);
}

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

.about-image-holo {
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(168, 85, 247, 0.12) 0%, transparent 40%, rgba(6, 182, 212, 0.08) 100%);
    pointer-events: none;
}

.kaggle-badge {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-pill);
    transition: border-color var(--duration-normal) var(--ease-smooth);
}

.kaggle-badge:hover {
    border-color: var(--neo-cyan);
}

.kaggle-badge img {
    width: 28px;
    height: 28px;
}

.kaggle-badge span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.about-text-col h3 {
    font-family: var(--font-heading);
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    font-weight: 700;
    margin-bottom: var(--space-xl);
    line-height: 1.3;
}

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-2xl);
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    transition: all var(--duration-normal) var(--ease-spring);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.04), transparent);
    transform: skewX(-20deg);
    transition: left 0.6s ease;
}

.stat-card:hover::before {
    left: 150%;
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--holo-1);
    box-shadow: 0 12px 30px rgba(168, 85, 247, 0.1);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 900;
    background: var(--holo-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    line-height: 1.3;
}

/* ── SERVICES SECTION ── */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.service-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: var(--space-2xl) var(--space-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-md);
    position: relative;
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-spring);
    cursor: pointer;
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--glass-border-hover);
    box-shadow: 0 20px 40px var(--shadow-color);
    background: var(--card-bg-hover);
}

.service-icon-wrapper {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    font-size: 1.5rem;
    transition: all var(--duration-normal) var(--ease-spring);
}

.service-card:hover .service-icon-wrapper {
    background: var(--holo-gradient);
    border-color: transparent;
    color: #fff;
    transform: scale(1.1) rotate(-5deg);
    box-shadow: 0 8px 20px rgba(168, 85, 247, 0.3);
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
}

/* Holographic border effect on service cards */
.service-holo-border {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-smooth);
    pointer-events: none;
}

.service-holo-border::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: var(--holo-gradient);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
    padding: 1px;
}

.service-card:hover .service-holo-border {
    opacity: 0.5;
}

/* ── PROJECTS SECTION ── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-spring);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: var(--holo-2);
    box-shadow: 0 20px 50px rgba(6, 182, 212, 0.15);
}

.project-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

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

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 10, 15, 0.9) 0%, rgba(10, 10, 15, 0.3) 50%, transparent 100%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: var(--space-xl);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-smooth);
}

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

.project-link-btn {
    padding: 10px 24px;
    background: var(--holo-gradient);
    color: #fff;
    border-radius: var(--border-radius-pill);
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transform: translateY(10px);
    transition: transform var(--duration-normal) var(--ease-out-expo),
                box-shadow var(--duration-normal) var(--ease-smooth);
    cursor: pointer;
}

.project-card:hover .project-link-btn {
    transform: translateY(0);
}

.project-link-btn:hover {
    box-shadow: 0 4px 15px rgba(168, 85, 247, 0.4);
}

.project-info {
    padding: var(--space-xl);
}

.project-info h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.project-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.project-tags span {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--holo-2);
    background: rgba(6, 182, 212, 0.08);
    padding: 4px 12px;
    border-radius: var(--border-radius-pill);
    border: 1px solid rgba(6, 182, 212, 0.15);
}

/* ── GITHUB SECTION ── */
.github-card {
    background: linear-gradient(160deg, var(--card-bg) 0%, rgba(123, 47, 255, 0.06) 100%);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: var(--space-xl);
    box-shadow: 0 12px 40px var(--shadow-color);
    transition: transform var(--duration-normal) var(--ease-spring),
                border-color var(--duration-normal) var(--ease-smooth),
                box-shadow var(--duration-normal) var(--ease-smooth);
}

.github-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 245, 212, 0.35);
    box-shadow: 0 22px 50px rgba(6, 182, 212, 0.18);
}

.github-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.github-title-wrap {
    flex: 1;
    display: flex;
    justify-content: center;
    min-width: 0;
}

.github-card-header h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.github-graph-title {
    margin-bottom: 0;
    text-align: center;
}

.github-card-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.github-profile-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--border-radius-pill);
    border: 1px solid var(--glass-border-hover);
    background: var(--card-bg);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--duration-normal) var(--ease-smooth);
}

.github-profile-link:hover {
    border-color: transparent;
    color: #fff;
    background: var(--holo-gradient);
}

.github-graph-wrap {
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: var(--space-md);
    background: rgba(10, 10, 15, 0.35);
    overflow-x: auto;
}

[data-theme="light"] .github-graph-wrap {
    background: rgba(255, 255, 255, 0.65);
}

.github-graph {
    width: 100%;
    min-width: 720px;
    border-radius: var(--border-radius-sm);
}

.github-stats-dashboard {
    margin-top: var(--space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.github-stats-row {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    gap: var(--space-sm);
    padding: var(--space-sm);
    border-radius: var(--border-radius);
    border: 1px solid var(--glass-border);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
}

.github-stats-row-3 .github-stat-card {
    width: 32%;
}

.github-stats-row-2 .github-stat-card {
    width: 49%;
}

.github-stat-card {
    display: block;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--glass-border);
    background: var(--bg-secondary);
    transition: transform var(--duration-normal) var(--ease-spring),
                box-shadow var(--duration-normal) var(--ease-smooth),
                border-color var(--duration-normal) var(--ease-smooth);
}

.github-stat-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 245, 212, 0.45);
    box-shadow: 0 14px 34px rgba(6, 182, 212, 0.22);
}

/* ── RESUME SECTION ── */
.resume-block {
    margin-bottom: var(--space-3xl);
}

.resume-heading {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--glass-border);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.resume-heading i {
    color: var(--holo-1);
    font-size: 1.2rem;
}

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

/* Timeline */
.timeline {
    position: relative;
    padding-left: var(--space-2xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--holo-1), var(--holo-2), transparent);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-2xl);
}

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--space-2xl) + 2px);
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--holo-gradient);
    border: 2px solid var(--bg-primary);
    box-shadow: 0 0 0 3px var(--holo-1);
    transition: box-shadow var(--duration-normal) var(--ease-smooth);
}

.timeline-item:hover .timeline-marker {
    box-shadow: 0 0 0 3px var(--holo-1), 0 0 15px rgba(168, 85, 247, 0.4);
}

.timeline-content {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-sm);
    padding: var(--space-lg) var(--space-xl);
    transition: all var(--duration-normal) var(--ease-spring);
}

.timeline-item:hover .timeline-content {
    border-color: var(--glass-border-hover);
    transform: translateX(4px);
    box-shadow: 0 4px 20px var(--shadow-color);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--holo-2);
    margin-bottom: var(--space-xs);
}

.timeline-content h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.timeline-company {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: var(--space-sm);
}

.timeline-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.resume-cta {
    text-align: center;
    margin-top: var(--space-3xl);
}

/* ── CONTACT SECTION ── */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: start;
}

.contact-info h3 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.contact-info p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
}

.contact-details {
    margin-bottom: var(--space-xl);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    font-size: 0.95rem;
    color: var(--text-primary);
}

.contact-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    color: var(--holo-2);
    font-size: 1rem;
    flex-shrink: 0;
    transition: all var(--duration-normal) var(--ease-spring);
}

.contact-item:hover .contact-icon {
    background: var(--holo-gradient);
    border-color: transparent;
    color: #fff;
    transform: scale(1.1);
}

.social-links {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.social-links a {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: all var(--duration-normal) var(--ease-spring);
    cursor: pointer;
}

.social-links a:hover {
    background: var(--holo-gradient);
    border-color: transparent;
    color: #fff;
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 25px rgba(168, 85, 247, 0.3);
}

.social-links .hf-icon {
    width: 20px;
    height: 20px;
    filter: brightness(0) invert(0.7);
    transition: filter var(--duration-normal) var(--ease-smooth);
}

.social-links a:hover .hf-icon {
    filter: brightness(0) invert(1);
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-lg) var(--space-md);
    padding-top: var(--space-xl);
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--duration-normal) var(--ease-smooth),
                box-shadow var(--duration-normal) var(--ease-smooth);
    cursor: pointer;
    outline: none;
}

.form-group label {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.95rem;
    transition: all var(--duration-normal) var(--ease-out-expo);
    pointer-events: none;
}

.form-group textarea ~ label {
    top: var(--space-lg);
    transform: none;
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    top: 8px;
    transform: none;
    font-size: 0.75rem;
    color: var(--holo-2);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--holo-2);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

.form-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--holo-gradient);
    border-radius: 2px;
    transition: width var(--duration-slow) var(--ease-out-expo);
}

.form-group input:focus ~ .form-line,
.form-group textarea:focus ~ .form-line {
    width: 100%;
}

.submit-btn {
    align-self: flex-start;
}

.submit-btn:disabled {
    opacity: 0.5;
    pointer-events: none;
}

/* ── FOOTER ── */
.footer {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ── INTERSECTION OBSERVER ANIMATIONS ── */
[data-animate] {
    opacity: 0;
    transform: translateY(60px);
    transition: opacity var(--duration-slow) var(--ease-out-expo),
                transform var(--duration-slow) var(--ease-out-expo);
}

[data-animate].animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* ── RESPONSIVE ── */

/* Tablet */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        text-align: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-visual {
        order: 0;
    }

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

    .hero-actions {
        justify-content: center;
    }

    .tech-stack {
        justify-content: center;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .github-card-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .resume-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
    }

    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        height: 100dvh;
        background: var(--nav-bg);
        backdrop-filter: blur(24px) saturate(200%);
        -webkit-backdrop-filter: blur(24px) saturate(200%);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--space-lg);
        padding: var(--space-4xl) var(--space-xl);
        transition: right var(--duration-slow) var(--ease-out-expo);
        z-index: 999;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-item {
        font-size: 1.25rem;
        padding: 12px 24px;
    }

    .nav-divider {
        width: 60px;
        height: 1px;
    }

    .nav-actions {
        gap: var(--space-lg);
    }

    .section {
        padding: var(--space-3xl) 0;
    }

    .hero-section {
        min-height: auto;
        padding-top: calc(var(--nav-height) + var(--space-xl));
    }

    .hero-image-wrapper {
        max-width: 280px;
        aspect-ratio: 3 / 3.5;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .scroll-indicator {
        display: none;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }

    .hero-name {
        font-size: clamp(1.2rem, 5.5vw, 1.8rem);
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .stat-card {
        flex-direction: column;
        text-align: center;
        padding: var(--space-md);
    }

    .project-image {
        height: 160px;
    }

    .section-title {
        margin-bottom: var(--space-2xl);
    }

    .github-card {
        padding: var(--space-lg);
    }

    .github-graph {
        min-width: 600px;
    }

    .github-stats-row {
        flex-wrap: wrap;
    }

    .github-stats-row-3 .github-stat-card,
    .github-stats-row-2 .github-stat-card {
        width: 100%;
    }
}

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

    html {
        scroll-behavior: auto;
    }

    .grain-overlay {
        animation: none;
    }

    [data-animate] {
        opacity: 1;
        transform: none;
    }
}