/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    /* Primary palette — refined indigo-violet */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --primary-glow: rgba(99, 102, 241, 0.35);

    /* Accent */
    --accent: #22d3ee;
    --accent-2: #a78bfa;
    --success: #10b981;

    /* Dark backgrounds */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: #1a1f35;
    --bg-card-hover: #222842;
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(99, 102, 241, 0.4);

    /* Text */
    --text-primary: #f0f2f5;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a78bfa 100%);
    --gradient-accent: linear-gradient(135deg, #6366f1 0%, #22d3ee 100%);
    --gradient-card: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.04) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.02) 100%);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.45);
    --shadow-glow: 0 0 50px rgba(99, 102, 241, 0.25);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);

    /* Spacing */
    --section-py: 120px;
    --container-px: 24px;

    /* Radius */
    --r-sm: 8px;
    --r-md: 14px;
    --r-lg: 22px;
    --r-xl: 32px;
    --r-full: 9999px;

    /* Transitions */
    --t-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --t-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --t-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

    /* Typography */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 2rem;
    --font-4xl: 2.75rem;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: var(--font-base);
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: rgba(99, 102, 241, 0.3);
    color: white;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--t-normal);
}

ul, ol { list-style: none; }

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
    background: transparent;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ===== UTILITY ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--container-px);
}

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

.section {
    padding: var(--section-py) 0;
    position: relative;
}

/* ===== PRELOADER ===== */
.preloader {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.preloader-logo {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: pulse-loader 1.5s ease-in-out infinite;
}

@keyframes pulse-loader {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.7; }
}

.preloader-bar {
    width: 120px;
    height: 3px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--r-full);
    overflow: hidden;
}

.preloader-progress {
    width: 0%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--r-full);
    animation: load-progress 1.2s ease forwards;
}

@keyframes load-progress {
    to { width: 100%; }
}

/* ===== CUSTOM CURSOR ===== */
.cursor-dot, .cursor-outline {
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s;
}

.cursor-dot {
    width: 6px;
    height: 6px;
    background: var(--primary);
}

.cursor-outline {
    width: 36px;
    height: 36px;
    border: 2px solid rgba(99, 102, 241, 0.4);
    transition: width 0.3s, height 0.3s, border-color 0.3s;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 18px 0;
    z-index: 1000;
    transition: var(--t-normal);
}

.navbar.scrolled {
    background: rgba(10, 14, 26, 0.92);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 4px;
}

.logo-text {
    font-size: var(--font-2xl);
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.logo-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.4); opacity: 0.6; }
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-link {
    font-weight: 500;
    font-size: var(--font-sm);
    color: var(--text-secondary);
    position: relative;
    padding: 6px 0;
    letter-spacing: 0.2px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: var(--r-full);
    transition: var(--t-normal);
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    background: var(--gradient-primary);
    color: white;
    font-weight: 600;
    font-size: var(--font-sm);
    border-radius: var(--r-full);
    box-shadow: var(--shadow-sm);
    transition: var(--t-normal);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--t-normal);
    transform-origin: center;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 30px;
    font-weight: 600;
    font-size: var(--font-sm);
    border-radius: var(--r-full);
    transition: var(--t-normal);
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
    opacity: 0;
    transition: var(--t-normal);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

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

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

.btn-primary i {
    transition: transform var(--t-normal);
}

.btn-outline {
    border: 2px solid var(--border-hover);
    color: var(--primary-light);
    background: transparent;
}

.btn-outline:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    backdrop-filter: blur(8px);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.2);
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 100px 0 60px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.hero-gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
    top: -15%;
    right: -10%;
    animation: float-orb 18s ease-in-out infinite;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.1) 0%, transparent 70%);
    bottom: -20%;
    left: -10%;
    animation: float-orb 22s ease-in-out infinite reverse;
}

@keyframes float-orb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -40px) scale(1.05); }
    66% { transform: translate(-20px, 30px) scale(0.95); }
}

.hero-grid-bg {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black, transparent);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black, transparent);
}

.hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 18px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--r-full);
    font-size: var(--font-xs);
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 28px;
    letter-spacing: 0.5px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
    flex-shrink: 0;
}

.hero-title {
    font-size: clamp(2.8rem, 5.5vw, 4.5rem);
    font-weight: 900;
    line-height: 1.05;
    margin-bottom: 20px;
    letter-spacing: -1.5px;
}

.hero-subtitle {
    font-size: var(--font-xl);
    color: var(--text-secondary);
    margin-bottom: 20px;
    min-height: 32px;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 400;
}

.cursor-blink {
    color: var(--primary);
    animation: blink 1s step-end infinite;
    font-weight: 300;
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero-description {
    font-size: var(--font-lg);
    color: var(--text-secondary);
    max-width: 480px;
    margin-bottom: 36px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    color: var(--text-secondary);
    font-size: var(--font-lg);
    transition: var(--t-normal);
}

.social-link:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

/* ===== HERO VISUAL ===== */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-container {
    position: relative;
    width: 380px;
    height: 380px;
}

.hero-image-glow {
    position: absolute;
    inset: -20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    opacity: 0.15;
    filter: blur(40px);
    animation: glow-pulse 4s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { opacity: 0.15; transform: scale(1); }
    50% { opacity: 0.25; transform: scale(1.05); }
}

.hero-image-ring {
    position: absolute;
    inset: -8px;
    border: 2px solid rgba(99, 102, 241, 0.2);
    border-radius: 50%;
    animation: spin-slow 20s linear infinite;
}

.hero-image-ring::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 10px;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 15px var(--primary-glow);
}

.ring-2 {
    inset: -22px;
    border-color: rgba(99, 102, 241, 0.08);
    animation-direction: reverse;
    animation-duration: 30s;
}

.ring-2::before {
    width: 8px;
    height: 8px;
    background: var(--accent);
    top: auto;
    left: auto;
    bottom: 20px;
    right: 20px;
    box-shadow: 0 0 12px rgba(34, 211, 238, 0.4);
}

@keyframes spin-slow {
    to { transform: rotate(360deg); }
}

.hero-profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.08);
    position: relative;
    z-index: 2;
}

/* Floating Cards */
.hero-float-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: rgba(26, 31, 53, 0.9);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    box-shadow: var(--shadow-card);
    z-index: 3;
}

.float-card-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--r-sm);
    color: white;
    font-size: var(--font-base);
}

.float-card-title {
    font-weight: 700;
    font-size: var(--font-sm);
    color: var(--text-primary);
    display: block;
    line-height: 1.2;
}

.float-card-sub {
    font-size: var(--font-xs);
    color: var(--text-muted);
    display: block;
}

.card-dev {
    top: 8%;
    left: -15%;
    animation: float-card 6s ease-in-out infinite;
}

.card-student {
    bottom: 8%;
    right: -15%;
    animation: float-card 6s ease-in-out infinite 1.5s;
}

@keyframes float-card {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: var(--font-xs);
    letter-spacing: 1px;
    text-transform: uppercase;
    animation: bounce-scroll 2.5s ease-in-out infinite;
}

.scroll-mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--text-muted);
    border-radius: 14px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.scroll-wheel {
    width: 3px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    animation: scroll-wheel-anim 2s ease-in-out infinite;
}

@keyframes scroll-wheel-anim {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(8px); opacity: 0.2; }
}

@keyframes bounce-scroll {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== ANIMATIONS ===== */
.animate-slide-up {
    opacity: 0;
    transform: translateY(30px);
    animation: slideUp 0.8s ease forwards;
}

.animate-fade-in {
    opacity: 0;
    animation: fadeIn 1s ease forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }
.delay-5 { animation-delay: 0.75s; }

@keyframes slideUp {
    to { opacity: 1; transform: translateY(0); }
}

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

/* Scroll Reveal */
.reveal-left,
.reveal-right,
.reveal-up {
    opacity: 0;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-left { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }
.reveal-up { transform: translateY(40px); }

.reveal-left.revealed,
.reveal-right.revealed,
.reveal-up.revealed {
    opacity: 1;
    transform: translate(0);
}

/* ===== SECTION HEADER ===== */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: var(--font-xs);
    font-weight: 700;
    color: var(--primary-light);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 16px;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: var(--r-full);
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.75rem);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.section-description {
    margin-top: 16px;
    font-size: var(--font-lg);
    color: var(--text-secondary);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

/* ===== ABOUT SECTION ===== */
.about {
    background: var(--bg-primary);
}

.about-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 80px;
    align-items: start;
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--r-lg);
    overflow: visible;
}

.about-image-wrapper img {
    width: 100%;
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-lg);
    aspect-ratio: 4 / 5;
    object-fit: cover;
}

.about-experience-badge {
    position: absolute;
    bottom: -24px;
    right: -24px;
    background: var(--gradient-primary);
    padding: 22px 26px;
    border-radius: var(--r-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: baseline;
    gap: 2px;
    flex-wrap: wrap;
    justify-content: center;
    min-width: 110px;
}

.badge-number {
    font-size: var(--font-3xl);
    font-weight: 900;
    color: white;
    line-height: 1;
}

.badge-plus {
    font-size: var(--font-2xl);
    font-weight: 700;
    color: rgba(255, 255, 255, 0.8);
}

.badge-label {
    font-size: var(--font-xs);
    color: rgba(255, 255, 255, 0.75);
    width: 100%;
    margin-top: 4px;
    line-height: 1.3;
}

.about-stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 28px;
}

.about-stat-card {
    background: var(--bg-card);
    padding: 22px 16px;
    border-radius: var(--r-md);
    text-align: center;
    border: 1px solid var(--border);
    transition: var(--t-normal);
}

.about-stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card);
}

.about-stat-card i {
    font-size: var(--font-2xl);
    color: var(--primary);
    margin-bottom: 12px;
}

.about-stat-card h3 {
    font-size: var(--font-sm);
    font-weight: 700;
    margin-bottom: 6px;
}

.about-stat-card p {
    font-size: var(--font-xs);
    color: var(--text-secondary);
    line-height: 1.4;
}

.about-description {
    font-size: var(--font-base);
    color: var(--text-secondary);
    margin-bottom: 28px;
    line-height: 1.8;
}

.about-description strong {
    color: var(--text-primary);
    font-weight: 600;
}

.about-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.detail-item i {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--r-sm);
    color: var(--primary);
    font-size: var(--font-sm);
    flex-shrink: 0;
    margin-top: 2px;
}

.detail-label {
    display: block;
    font-size: var(--font-xs);
    color: var(--text-muted);
    font-weight: 500;
}

.detail-value {
    display: block;
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.about-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

/* ===== SKILLS SECTION ===== */
.skills {
    background: var(--bg-secondary);
}

.skills-grid-layout {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.skill-category {
    background: var(--bg-card);
    padding: 32px 28px;
    border-radius: var(--r-lg);
    border: 1px solid var(--border);
    transition: var(--t-normal);
}

.skill-category:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card);
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 28px;
}

.skill-category-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--r-sm);
    color: white;
    font-size: var(--font-lg);
}

.skill-category-header h3 {
    font-size: var(--font-base);
    font-weight: 700;
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skill-pill {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    transition: var(--t-normal);
    position: relative;
    overflow: hidden;
}

.skill-pill:hover {
    border-color: var(--border-hover);
    background: rgba(99, 102, 241, 0.05);
    transform: translateX(4px);
}

.skill-pill i {
    font-size: var(--font-lg);
    color: var(--primary);
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

.skill-pill span {
    font-weight: 600;
    font-size: var(--font-sm);
    flex: 1;
}

.skill-level {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: var(--r-full);
    width: 0;
    transition: width 1.5s ease-out;
}

.skill-level.animated {
    width: var(--level-width);
}

/* ===== PROJECTS SECTION ===== */
.projects {
    background: var(--bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.project-card {
    background: var(--bg-card);
    border-radius: var(--r-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--t-normal);
}

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

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

.project-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4338ca 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    color: rgba(255, 255, 255, 0.25);
    transition: var(--t-slow);
}

.placeholder-2 {
    background: linear-gradient(135deg, #0c4a6e 0%, #075985 50%, #0284c7 100%);
}

.placeholder-3 {
    background: linear-gradient(135deg, #134e4a 0%, #115e59 50%, #0d9488 100%);
}

.project-card:hover .project-image-placeholder {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 14, 26, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--t-normal);
}

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

.project-links {
    display: flex;
    gap: 12px;
}

.project-link-btn {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    color: white;
    font-size: var(--font-xl);
    transform: scale(0);
    transition: var(--t-normal);
}

.project-card:hover .project-link-btn {
    transform: scale(1);
}

.project-link-btn:hover {
    box-shadow: var(--shadow-glow);
}

.project-info {
    padding: 24px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

.project-tag {
    font-size: var(--font-xs);
    font-weight: 600;
    padding: 4px 10px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-light);
    border-radius: var(--r-full);
    border: 1px solid rgba(99, 102, 241, 0.15);
}

.project-info h3 {
    font-size: var(--font-lg);
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.3;
}

.project-info p {
    font-size: var(--font-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

.projects-cta {
    text-align: center;
    margin-top: 48px;
}

/* ===== EDUCATION SECTION ===== */
.education {
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    border-radius: var(--r-full);
}

.timeline-item {
    position: relative;
    margin-bottom: 48px;
}

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

.timeline-marker {
    position: absolute;
    left: -40px;
    top: 0;
    width: 32px;
    height: 32px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-sm);
    box-shadow: 0 0 0 6px var(--bg-secondary), var(--shadow-md);
    z-index: 2;
}

.timeline-content {
    background: var(--bg-card);
    padding: 32px;
    border-radius: var(--r-lg);
    border: 1px solid var(--border);
    transition: var(--t-normal);
}

.timeline-content:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card);
}

.timeline-date {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-xs);
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 12px;
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--r-full);
}

.timeline-content h3 {
    font-size: var(--font-xl);
    font-weight: 700;
    margin-bottom: 6px;
}

.timeline-content h4 {
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 14px;
}

.timeline-content p {
    font-size: var(--font-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.timeline-tags span {
    font-size: var(--font-xs);
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--r-full);
    color: var(--text-secondary);
    font-weight: 500;
}

/* ===== CERTIFICATES SECTION ===== */
.certificates {
    background: var(--bg-primary);
}

.certificates-carousel {
    overflow: hidden;
}

#certificates-track {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.certificate-card {
    background: var(--bg-card);
    border-radius: var(--r-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--t-normal);
}

.certificate-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
}

.certificate-image {
    position: relative;
    height: 180px;
    overflow: hidden;
}

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

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

.certificate-overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 14, 26, 0.65);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--t-normal);
}

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

.view-cert-btn {
    width: 52px;
    height: 52px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-lg);
    transform: scale(0);
    transition: var(--t-normal);
}

.certificate-card:hover .view-cert-btn {
    transform: scale(1);
}

.certificate-info {
    padding: 20px 22px;
}

.certificate-info h3 {
    font-size: var(--font-sm);
    font-weight: 700;
    margin-bottom: 6px;
    line-height: 1.3;
}

.certificate-issuer {
    color: var(--text-secondary) !important;
    font-size: var(--font-xs) !important;
    margin-bottom: 8px !important;
}

.certificate-date {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-xs);
    color: var(--primary-light);
    font-weight: 500;
}

/* Certificate Toggle */
.cert-hidden {
    display: none;
    opacity: 0;
    transform: translateY(20px);
}

.cert-hidden.cert-visible {
    display: block;
    opacity: 1;
    transform: translateY(0);
    animation: certReveal 0.5s ease forwards;
}

@keyframes certReveal {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.certificates-toggle {
    text-align: center;
    margin-top: 40px;
}

.certificates-toggle .btn i {
    transition: transform var(--t-normal);
}

.certificates-toggle .btn.expanded i {
    transform: rotate(180deg);
}

/* ===== CONTACT SECTION ===== */
.contact {
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 48px;
    align-items: start;
}

.contact-info-col {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--r-md);
    border: 1px solid var(--border);
    transition: var(--t-normal);
}

.contact-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.contact-card-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--r-sm);
    color: var(--primary);
    font-size: var(--font-lg);
    margin-bottom: 14px;
}

.contact-card h4 {
    font-size: var(--font-sm);
    font-weight: 700;
    margin-bottom: 4px;
}

.contact-card p,
.contact-card a {
    font-size: var(--font-sm);
    color: var(--text-secondary);
}

.contact-card a:hover {
    color: var(--primary);
}

.contact-social-row {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--r-md);
    border: 1px solid var(--border);
}

.contact-social-row h4 {
    font-size: var(--font-sm);
    font-weight: 700;
    margin-bottom: 16px;
}

.social-links-row {
    display: flex;
    gap: 12px;
}

.social-links-row a {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    color: var(--text-secondary);
    font-size: var(--font-lg);
    transition: var(--t-normal);
}

.social-links-row a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    transform: translateY(-3px);
}

/* Contact Form */
.contact-form {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--r-lg);
    border: 1px solid var(--border);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: var(--font-xs);
    margin-bottom: 8px;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    color: var(--text-primary);
    font-size: var(--font-sm);
    transition: var(--t-normal);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    background: rgba(99, 102, 241, 0.03);
}

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

.form-group textarea {
    resize: vertical;
    min-height: 130px;
}

.form-error {
    display: block;
    font-size: var(--font-xs);
    color: #ef4444;
    margin-top: 6px;
}

.btn-submit {
    width: 100%;
    justify-content: center;
    padding: 16px 32px;
    font-size: var(--font-base);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-primary);
    padding: 72px 0 24px;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

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

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: var(--font-sm);
    line-height: 1.7;
}

.footer-nav h4,
.footer-connect h4 {
    font-size: var(--font-sm);
    font-weight: 700;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-primary);
}

.footer-nav ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-nav a {
    color: var(--text-secondary);
    font-size: var(--font-sm);
    transition: var(--t-normal);
}

.footer-nav a:hover {
    color: var(--primary-light);
    padding-left: 8px;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: var(--font-xs);
}

.footer-bottom i {
    color: #ef4444;
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

/* ===== MODAL ===== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--t-normal);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.88);
    backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90vh;
    z-index: 2;
}

.modal-content img {
    max-width: 100%;
    max-height: 85vh;
    border-radius: var(--r-md);
    box-shadow: var(--shadow-lg);
}

.modal-close {
    position: absolute;
    top: -48px;
    right: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    font-size: var(--font-lg);
    transition: var(--t-normal);
}

.modal-close:hover {
    background: var(--primary);
    transform: rotate(90deg);
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-base);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: var(--t-normal);
    z-index: 998;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    :root {
        --section-py: 90px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-text { order: 2; }
    .hero-visual { order: 1; }

    .hero-description {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-badge { margin-left: auto; margin-right: auto; }
    .hero-buttons { justify-content: center; }
    .hero-social { justify-content: center; }

    .hero-float-card { display: none; }

    .hero-image-container {
        width: 300px;
        height: 300px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-image-col {
        display: flex;
        justify-content: center;
    }

    .about-image-wrapper {
        max-width: 360px;
    }

    .skills-grid-layout {
        grid-template-columns: 1fr 1fr;
    }

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

    #certificates-track {
        grid-template-columns: 1fr 1fr;
    }

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

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

@media (max-width: 768px) {
    :root {
        --section-py: 72px;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: rgba(10, 14, 26, 0.98);
        backdrop-filter: blur(24px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 28px;
        transition: var(--t-normal);
    }

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

    .nav-link {
        font-size: var(--font-xl);
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .nav-cta { display: none; }

    .hero-buttons {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }

    .btn { width: 100%; justify-content: center; max-width: 320px; }

    .about-stats-row {
        grid-template-columns: 1fr;
    }

    .about-details {
        grid-template-columns: 1fr;
    }

    .skills-grid-layout {
        grid-template-columns: 1fr;
    }

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

    #certificates-track {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 28px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }

    .footer-brand { max-width: 100%; }
    .social-links-row { justify-content: center; }

    .scroll-indicator { display: none; }

    .timeline {
        padding-left: 32px;
    }

    .timeline::before {
        left: 11px;
    }

    .timeline-marker {
        left: -32px;
        width: 24px;
        height: 24px;
        font-size: var(--font-xs);
    }

    .timeline-content {
        padding: 24px;
    }

    .cursor-dot, .cursor-outline {
        display: none;
    }
}

@media (max-width: 480px) {
    :root {
        --section-py: 56px;
    }

    .hero {
        padding: 90px 0 48px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .hero-image-container {
        width: 240px;
        height: 240px;
    }
}

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