/* ============================================
   RAJATKANT NAYAK — PORTFOLIO STYLES
   ============================================ */

/* ===== CSS VARIABLES ===== */
:root {
    /* Dark theme (default) */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a2e;
    --bg-card-hover: #1f1f35;
    --bg-glass: rgba(26, 26, 46, 0.7);
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --accent-primary: #6c63ff;
    --accent-secondary: #a78bfa;
    --accent-gradient: linear-gradient(135deg, #6c63ff, #a78bfa, #c084fc);
    --accent-gradient-hover: linear-gradient(135deg, #7c73ff, #b79bfa, #d094fc);
    --accent-glow: rgba(108, 99, 255, 0.3);
    --border-color: rgba(108, 99, 255, 0.15);
    --border-subtle: rgba(255, 255, 255, 0.06);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(108, 99, 255, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --font-mono: 'JetBrains Mono', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Space Grotesk', sans-serif;
}

[data-theme="light"] {
    --bg-primary: #fafafa;
    --bg-secondary: #f4f4f5;
    --bg-card: #ffffff;
    --bg-card-hover: #f8f8ff;
    --bg-glass: rgba(255, 255, 255, 0.8);
    --text-primary: #18181b;
    --text-secondary: #52525b;
    --text-muted: #a1a1aa;
    --border-color: rgba(108, 99, 255, 0.2);
    --border-subtle: rgba(0, 0, 0, 0.06);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(108, 99, 255, 0.1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-primary) var(--bg-secondary);
}

::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 4px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    cursor: none;
}

@media (max-width: 768px) {
    body {
        cursor: auto;
    }
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-secondary);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== CUSTOM CURSOR ===== */
.cursor-dot {
    position: fixed;
    width: 6px;
    height: 6px;
    background: var(--accent-primary);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10000;
    transition: transform 0.1s ease;
    mix-blend-mode: difference;
}

.cursor-ring {
    position: fixed;
    width: 36px;
    height: 36px;
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10000;
    transition: transform 0.15s ease, width 0.3s ease, height 0.3s ease, border-color 0.3s ease;
    transform: translate(-50%, -50%);
    opacity: 0.5;
}

.cursor-ring.hover {
    width: 56px;
    height: 56px;
    border-color: var(--accent-secondary);
    opacity: 0.8;
}

@media (max-width: 768px) {

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

/* ===== PARTICLE CANVAS ===== */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ===== LOADER ===== */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
    width: 90%;
    max-width: 500px;
}

.loader-terminal {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin-bottom: 24px;
    text-align: left;
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-subtle);
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dot.red {
    background: #ff5f57;
}

.terminal-dot.yellow {
    background: #ffbd2e;
}

.terminal-dot.green {
    background: #28c841;
}

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 8px;
}

.terminal-body {
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.loader-line {
    color: var(--text-muted);
    margin-bottom: 8px;
    opacity: 0;
    transform: translateY(10px);
    animation: loaderLineIn 0.4s forwards;
}

.loader-line:nth-child(1) {
    animation-delay: 0.3s;
}

.loader-line:nth-child(2) {
    animation-delay: 0.8s;
}

.loader-line:nth-child(3) {
    animation-delay: 1.3s;
}

.loader-line:nth-child(4) {
    animation-delay: 1.8s;
    color: #28c841;
}

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

.loader-bar {
    height: 3px;
    background: var(--bg-secondary);
    border-radius: 2px;
    overflow: hidden;
}

.loader-progress {
    height: 100%;
    width: 0%;
    background: var(--accent-gradient);
    border-radius: 2px;
    animation: loaderFill 2.5s ease forwards;
}

@keyframes loaderFill {
    0% {
        width: 0%;
    }

    30% {
        width: 30%;
    }

    60% {
        width: 65%;
    }

    100% {
        width: 100%;
    }
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition-normal);
    background: transparent;
}

.navbar.scrolled {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 10px 0;
    box-shadow: var(--shadow-sm);
}

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

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo-bracket {
    color: var(--accent-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    text-decoration: none;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(108, 99, 255, 0.1);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accent-primary);
}

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

.theme-toggle {
    background: none;
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: none;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: 1rem;
}

.theme-toggle:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: rgba(108, 99, 255, 0.1);
}

.nav-cta {
    padding: 8px 20px;
    background: var(--accent-gradient);
    color: #fff;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 16px var(--accent-glow);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-glow);
    color: #fff;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

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

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

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

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    z-index: 999;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-links {
    list-style: none;
    text-align: center;
}

.mobile-nav-links li {
    margin: 16px 0;
}

.mobile-link {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.mobile-link:hover {
    color: var(--accent-primary);
}

@media (max-width: 900px) {

    .nav-links,
    .nav-cta {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .mobile-menu {
        display: flex;
    }
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    z-index: 1;
    padding: 120px 24px 60px;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
    width: 100%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(108, 99, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-size: 0.8rem;
    color: var(--accent-secondary);
    margin-bottom: 20px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #28c841;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(1.5);
    }
}

.hero-greeting {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    font-weight: 500;
}

.greeting-line {
    width: 40px;
    height: 2px;
    background: var(--accent-primary);
}

.hero-name {
    font-family: var(--font-display);
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -2px;
}

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

.hero-typewriter {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    min-height: 28px;
}

.typewriter-prefix {
    color: var(--accent-primary);
}

.typewriter-cursor {
    animation: blink 1s infinite;
    color: var(--accent-primary);
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 520px;
}

.hero-description strong {
    color: var(--text-primary);
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-normal);
    cursor: none;
    text-decoration: none;
    border: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px var(--accent-glow);
    color: #fff;
}

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

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

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

.btn-outline:hover {
    border-color: var(--accent-primary);
    background: rgba(108, 99, 255, 0.05);
    color: var(--text-primary);
}

.hero-socials {
    display: flex;
    gap: 16px;
}

.social-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-subtle);
    border-radius: 50%;
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: all var(--transition-normal);
}

.social-icon:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px var(--accent-glow);
}

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

.hero-card-stack {
    position: relative;
    width: 340px;
    height: 340px;
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    animation: float 6s ease-in-out infinite;
    z-index: 2;
}

.floating-card i {
    color: var(--accent-primary);
    font-size: 1.1rem;
}

.card-1 {
    top: 0;
    left: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 15%;
    right: 0;
    animation-delay: 1.5s;
}

.card-3 {
    bottom: 15%;
    left: 0;
    animation-delay: 3s;
}

.card-4 {
    bottom: 0;
    right: 10%;
    animation-delay: 4.5s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

.hero-avatar {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 140px;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
}

.avatar-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: var(--accent-primary);
    border-right-color: var(--accent-secondary);
    animation: spin 3s linear infinite;
}

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

.avatar-initials {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.avatar-status {
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 16px;
    height: 16px;
    background: #28c841;
    border-radius: 50%;
    border: 3px solid var(--bg-primary);
    animation: pulse 2s infinite;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    position: relative;
}

.mouse-wheel {
    width: 3px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 2s infinite;
}

@keyframes scroll-wheel {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }

    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(12px);
    }
}

.scroll-indicator span {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ===== SECTION COMMON ===== */
.section {
    padding: 100px 0;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-primary);
    display: block;
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

.section-subtitle code {
    background: rgba(108, 99, 255, 0.15);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-secondary);
}

.section-line {
    width: 60px;
    height: 3px;
    background: var(--accent-gradient);
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ===== ABOUT ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-lead {
    font-size: 1.15rem;
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-text p {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.about-text strong {
    color: var(--text-primary);
}

.highlight {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border-subtle);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-plus {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.about-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.detail-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.detail-card:hover {
    border-color: var(--border-color);
    transform: translateX(8px);
    box-shadow: var(--shadow-glow);
}

.detail-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(108, 99, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.detail-info h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.detail-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
}

/* ===== INTERACTIVE TERMINAL ===== */
.terminal-section {
    padding-bottom: 60px;
}

.interactive-terminal {
    max-width: 700px;
    margin: 0 auto;
}

.terminal-window {
    background: #0d1117;
    border: 1px solid rgba(108, 99, 255, 0.2);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg), 0 0 60px rgba(108, 99, 255, 0.05);
}

.terminal-window .terminal-body {
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    max-height: 300px;
    overflow-y: auto;
    scroll-behavior: smooth;
}

.terminal-line {
    margin-bottom: 8px;
    line-height: 1.6;
}

.terminal-prompt {
    color: #28c841;
    margin-right: 8px;
}

.terminal-output {
    color: #c9d1d9;
}

.cmd-highlight {
    color: var(--accent-secondary);
    font-weight: 600;
}

.terminal-input-line {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(0, 0, 0, 0.2);
}

.terminal-input {
    background: none;
    border: none;
    color: #e4e4e7;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    flex: 1;
    outline: none;
    caret-color: var(--accent-primary);
}

.terminal-input::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

/* ===== SKILLS ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

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

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

.category-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
}

.category-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(108, 99, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    font-size: 1.1rem;
}

.category-header h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
}

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

.skill-tag {
    padding: 6px 14px;
    background: rgba(108, 99, 255, 0.08);
    border: 1px solid rgba(108, 99, 255, 0.15);
    border-radius: var(--radius-xl);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    cursor: default;
}

.skill-tag:hover {
    background: rgba(108, 99, 255, 0.15);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
}

/* ===== PROJECTS ===== */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-card);
    color: var(--text-secondary);
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: none;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-gradient);
    color: #fff;
    border-color: transparent;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 24px;
}

.project-card {
    perspective: 1000px;
    height: 380px;
}

.project-card.hidden {
    display: none;
}

.project-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s ease;
    transform-style: preserve-3d;
}

.project-card:hover .project-card-inner {
    transform: rotateY(180deg);
}

.project-card-front,
.project-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--radius-lg);
    padding: 28px;
    display: flex;
    flex-direction: column;
}

.project-card-front {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
}

.project-card-back {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transform: rotateY(180deg);
    justify-content: center;
}

.project-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 900;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.3;
    position: absolute;
    top: 16px;
    right: 24px;
}

.project-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(108, 99, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--accent-primary);
    font-size: 1.3rem;
    margin-bottom: 16px;
}

.project-card-front h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.project-excerpt {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 16px;
}

.project-tech span {
    padding: 4px 10px;
    background: rgba(108, 99, 255, 0.08);
    border-radius: var(--radius-xl);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--accent-secondary);
}

.project-meta {
    display: flex;
    gap: 16px;
    margin-top: 12px;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.project-meta i {
    margin-right: 4px;
}

.project-card-back h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--accent-primary);
}

.project-card-back ul {
    list-style: none;
    margin-bottom: 20px;
}

.project-card-back li {
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 4px 0;
    padding-left: 16px;
    position: relative;
}

.project-card-back li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
}

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

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(108, 99, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent-primary);
    transition: all var(--transition-fast);
}

.project-link:hover {
    background: var(--accent-primary);
    color: #fff;
}

/* ===== TIMELINE ===== */
.timeline {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-marker {
    position: absolute;
    left: -40px;
    top: 4px;
    width: 32px;
    height: 32px;
    background: var(--bg-card);
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    font-size: 0.75rem;
    z-index: 2;
}

.timeline-content {
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.timeline-content:hover {
    border-color: var(--border-color);
    transform: translateX(8px);
    box-shadow: var(--shadow-glow);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--accent-secondary);
    margin-bottom: 6px;
    display: block;
}

.timeline-content h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.timeline-content h4 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 6px;
}

.timeline-content p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== CERTIFICATIONS MARQUEE ===== */
.certifications {
    overflow: hidden;
}

.cert-marquee {
    overflow: hidden;
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.cert-track {
    display: flex;
    gap: 20px;
    animation: marquee 40s linear infinite;
    width: max-content;
}

.cert-track:hover {
    animation-play-state: paused;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

.cert-card {
    min-width: 280px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    flex-shrink: 0;
    transition: all var(--transition-normal);
}

.cert-card:hover {
    border-color: var(--border-color);
    box-shadow: var(--shadow-glow);
}

.cert-logo {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(108, 99, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.cert-card h4 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 4px;
    line-height: 1.4;
}

.cert-card p {
    font-size: 0.78rem;
    color: var(--text-muted);
}

a.cert-link {
    text-decoration: none;
    color: inherit;
    display: block;
    cursor: pointer;
}

a.cert-link:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

a.cert-link::after {
    content: '\f35d';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.7rem;
    color: var(--accent-primary);
    opacity: 0;
    position: absolute;
    top: 10px;
    right: 10px;
    transition: opacity 0.2s;
}

a.cert-link {
    position: relative;
}

a.cert-link:hover::after {
    opacity: 1;
}

/* ===== PUBLICATIONS ===== */
.publication-card {
    display: flex;
    gap: 24px;
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    max-width: 800px;
    margin: 0 auto;
    transition: all var(--transition-normal);
}

.publication-card:hover {
    border-color: var(--border-color);
    box-shadow: var(--shadow-glow);
}

.pub-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(108, 99, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--accent-primary);
    font-size: 1.4rem;
    flex-shrink: 0;
}

.pub-content h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.pub-venue {
    font-size: 0.85rem;
    color: var(--accent-secondary);
    margin-bottom: 12px;
}

.pub-venue i {
    margin-right: 6px;
}

.pub-abstract {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

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

.pub-tags span {
    padding: 4px 10px;
    background: rgba(108, 99, 255, 0.08);
    border-radius: var(--radius-xl);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--accent-secondary);
}

/* ===== GITHUB STATS ===== */
.gh-custom-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.gh-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px;
    overflow: hidden;
    transition: all var(--transition-fast);
}

.gh-card:hover {
    border-color: rgba(108, 99, 255, 0.3);
    box-shadow: 0 8px 32px rgba(108, 99, 255, 0.08);
    transform: translateY(-2px);
}

.gh-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 22px;
}

.gh-card-header i {
    font-size: 1.1rem;
    color: var(--accent-primary);
}

.gh-card-header h3 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.gh-stats-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.gh-stat {
    text-align: center;
    padding: 14px 8px;
    background: rgba(108, 99, 255, 0.04);
    border-radius: var(--radius-md);
    border: 1px solid rgba(108, 99, 255, 0.08);
}

.gh-stat-value {
    display: block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent-primary);
    line-height: 1.2;
}

.gh-stat-label {
    display: block;
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.gh-streak-card {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.gh-streak-card img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
}

.gh-lang-card {
    grid-column: 1 / -1;
}

.gh-lang-bars {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.gh-lang-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.gh-lang-name {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 100px;
    text-align: right;
}

.gh-lang-bar-wrap {
    flex: 1;
    height: 10px;
    background: rgba(108, 99, 255, 0.08);
    border-radius: 6px;
    overflow: hidden;
}

.gh-lang-bar {
    height: 100%;
    border-radius: 6px;
    transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
    width: 0;
}

.gh-lang-pct {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-muted);
    min-width: 40px;
}

.gh-profile-link {
    text-align: center;
    margin-top: 32px;
}

.btn-github {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.btn-github:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #fff;
    box-shadow: 0 8px 24px var(--accent-glow);
    transform: translateY(-2px);
}

.btn-github i {
    font-size: 1.1rem;
}

/* ===== CONTACT ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    max-width: 900px;
    margin: 0 auto;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(108, 99, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.contact-item a,
.contact-item p {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    padding-top: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    outline: none;
    transition: all var(--transition-fast);
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.1);
}

.form-group label {
    position: absolute;
    left: 16px;
    top: 20px;
    font-size: 0.9rem;
    color: var(--text-muted);
    transition: all var(--transition-fast);
    pointer-events: 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: 6px;
    font-size: 0.72rem;
    color: var(--accent-primary);
}

.btn-submit {
    align-self: flex-start;
    cursor: none;
}

/* ===== FOOTER ===== */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border-subtle);
    position: relative;
    z-index: 1;
}

.footer-content {
    text-align: center;
}

.footer-logo {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.footer-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.footer-socials {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 16px;
}

.footer-socials a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-subtle);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.footer-socials a:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.footer-copy {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ===== MATRIX CANVAS (Easter Egg) ===== */
.matrix-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99998;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.matrix-canvas.active {
    opacity: 0.7;
    pointer-events: auto;
}

/* ===== HACKATHONS ===== */
.hackathon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

.hackathon-card {
    position: relative;
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.hackathon-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent-gradient);
}

.hackathon-card:hover {
    border-color: var(--border-color);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
}

.hackathon-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 14px;
    background: var(--accent-gradient);
    color: #fff;
    border-radius: var(--radius-xl);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 700;
}

.hackathon-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(108, 99, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--accent-primary);
    font-size: 1.3rem;
    margin-bottom: 16px;
}

.hackathon-card h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.hackathon-card h4 {
    font-size: 0.9rem;
    color: var(--accent-secondary);
    font-weight: 500;
    margin-bottom: 8px;
}

.hackathon-date {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.hackathon-date i {
    margin-right: 6px;
}

.hackathon-card>p:not(.hackathon-date) {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.hackathon-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
}

.hackathon-tech span {
    padding: 4px 10px;
    background: rgba(108, 99, 255, 0.08);
    border-radius: var(--radius-xl);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--accent-secondary);
}

.hackathon-team {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.hackathon-team i {
    color: var(--accent-primary);
    margin-right: 6px;
}

.hackathon-links {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.hackathon-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(108, 99, 255, 0.1);
    border: 1px solid rgba(108, 99, 255, 0.2);
    border-radius: var(--radius-xl);
    color: var(--accent-primary);
    font-size: 0.78rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.hackathon-link:hover {
    background: var(--accent-primary);
    color: #fff;
    border-color: var(--accent-primary);
    box-shadow: 0 4px 16px var(--accent-glow);
}

/* ===== TUTORING & YOUTUBE ===== */
.tutoring-grid {
    max-width: 800px;
    margin: 0 auto;
}

.tutoring-intro {
    text-align: center;
    margin-bottom: 48px;
}

.tutoring-icon-large {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(108, 99, 255, 0.1);
    border-radius: 50%;
    color: var(--accent-primary);
    font-size: 1.8rem;
    margin: 0 auto 20px;
}

.tutoring-intro h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.tutoring-intro p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

.tutoring-intro p strong {
    color: var(--text-primary);
}

.youtube-courses {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.course-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.course-card:hover {
    border-color: #ff0000;
    transform: translateX(8px);
    box-shadow: 0 0 30px rgba(255, 0, 0, 0.08);
}

.course-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 0, 0, 0.1);
    border-radius: var(--radius-md);
    color: #ff0000;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.course-info h4 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.course-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.course-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid rgba(255, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    color: #ff4444;
    transition: all var(--transition-fast);
}

.course-link:hover {
    background: #ff0000;
    border-color: #ff0000;
    color: #fff;
}

.course-badge {
    display: inline-block;
    padding: 3px 10px;
    background: linear-gradient(135deg, #ff6b00, #ff0044);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-radius: 20px;
    margin-left: 10px;
    vertical-align: middle;
    animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% { box-shadow: 0 0 6px rgba(255, 0, 68, 0.3); }
    50% { box-shadow: 0 0 14px rgba(255, 0, 68, 0.6); }
}

.course-note {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.course-note i {
    color: #ff6b00;
    font-size: 0.72rem;
}

/* ===== ANIMATIONS ===== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

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

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

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

    .hero-description {
        margin: 0 auto 32px;
    }

    .hero-card-stack {
        width: 280px;
        height: 280px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .gh-custom-grid {
        grid-template-columns: 1fr;
    }

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

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

    .publication-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .pub-tags {
        justify-content: center;
    }

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

    .course-card {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 2.5rem;
    }

    .section {
        padding: 60px 0;
    }

    .floating-card {
        font-size: 0.75rem;
        padding: 8px 14px;
    }

    .project-card {
        height: 400px;
    }
}

/* ===== LANGUAGE FLAG BUTTONS ===== */
.lang-flags {
    display: flex;
    align-items: center;
    gap: 4px;
}

.flag-btn {
    background: none;
    border: 2px solid transparent;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    transition: all var(--transition-fast);
    position: relative;
    opacity: 0.55;
    filter: grayscale(40%);
}

.flag-btn:hover {
    opacity: 1;
    filter: grayscale(0%);
    transform: scale(1.15);
    border-color: rgba(108, 99, 255, 0.3);
    background: rgba(108, 99, 255, 0.08);
}

.flag-btn.active {
    opacity: 1;
    filter: grayscale(0%);
    border-color: var(--accent-primary);
    background: rgba(108, 99, 255, 0.12);
    box-shadow: 0 0 12px var(--accent-glow);
}

.flag-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 3px;
    background: var(--accent-primary);
    border-radius: 2px;
}

/* Mobile Language Switcher */
.mobile-lang-switcher {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 20px 0 10px;
}

.mobile-lang-btn {
    padding: 8px 16px;
    background: rgba(108, 99, 255, 0.08);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    border-radius: var(--radius-xl);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mobile-lang-btn:hover,
.mobile-lang-btn.active {
    background: var(--accent-gradient);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 16px var(--accent-glow);
}

/* Hide lang-flags on mobile (use mobile-lang instead) */
@media (max-width: 900px) {
    .lang-flags {
        display: none;
    }
}

@media (min-width: 901px) {
    .mobile-lang-switcher {
        display: none;
    }
}