/* =====================================================
   MODERN PORTFOLIO — STYLE.CSS
   Design: Dark glassmorphism · Gradient accents · Smooth animations
   ===================================================== */

/* ─── Google Font Import handled via HTML ─── */

/* ─── Design Tokens ─── */
:root {
    /* Palette */
    --clr-bg: #080c14;
    --clr-surface: rgba(255, 255, 255, 0.04);
    --clr-glass: rgba(255, 255, 255, 0.06);
    --clr-glass-border: rgba(255, 255, 255, 0.1);
    --clr-text: #e8eaf0;
    --clr-text-muted: #8892a4;
    --clr-text-dim: #4d5872;
    --clr-accent: #6c63ff;
    --clr-accent-2: #00d4aa;
    --clr-accent-3: #ff6b6b;

    /* Gradients */
    --grad-primary: linear-gradient(135deg, #6c63ff 0%, #00d4aa 100%);
    --grad-glow: radial-gradient(ellipse at center, rgba(108, 99, 255, 0.35), transparent 70%);
    --grad-text: linear-gradient(135deg, #6c63ff, #00d4aa);

    /* Typography */
    --font-sans: 'Inter', system-ui, sans-serif;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;

    /* Spacing */
    --section-py: 100px;
    --container-max: 1200px;
    --container-px: clamp(20px, 5vw, 60px);

    /* Effects */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --blur: blur(24px);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(108, 99, 255, 0.2);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --clr-bg: #f0f2f8;
    --clr-surface: rgba(255, 255, 255, 0.7);
    --clr-glass: rgba(255, 255, 255, 0.8);
    --clr-glass-border: rgba(0, 0, 0, 0.08);
    --clr-text: #0f172a;
    --clr-text-muted: #475569;
    --clr-text-dim: #94a3b8;
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(108, 99, 255, 0.12);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--clr-bg);
    color: var(--clr-text);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

button,
input,
textarea,
select {
    font: inherit;
    color: inherit;
    background: none;
    border: none;
    outline: none;
}

ul,
ol {
    list-style: none;
}

/* ─── Noise Overlay ─── */
.noise-overlay {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ─── Container ─── */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-px);
    position: relative;
    z-index: 1;
}

/* ─── Glass Card ─── */
.glass-card {
    background: var(--clr-glass);
    border: 1px solid var(--clr-glass-border);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

/* ─── Gradient Text ─── */
.gradient-text {
    background: var(--grad-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ─── Scroll reveal ─── */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Buttons ─── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--grad-primary);
    color: #fff;
    box-shadow: 0 4px 20px rgba(108, 99, 255, 0.4);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.15);
    opacity: 0;
    transition: var(--transition);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(108, 99, 255, 0.6);
}

.btn-ghost {
    background: var(--clr-glass);
    border: 1px solid var(--clr-glass-border);
    backdrop-filter: var(--blur);
    color: var(--clr-text);
}

.btn-ghost:hover {
    border-color: var(--clr-accent);
    color: var(--clr-accent);
    transform: translateY(-2px);
}

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

/* ─── Chips ─── */
.chip {
    display: inline-flex;
    align-items: center;
    height: 28px;
    padding: 0 12px;
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 500;
    background: rgba(108, 99, 255, 0.15);
    color: #a29bfe;
    border: 1px solid rgba(108, 99, 255, 0.25);
    letter-spacing: 0.02em;
}

/* ─── Section Common ─── */
.section {
    padding: var(--section-py) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--clr-accent);
    margin-bottom: 12px;
}

.section-tag::before,
.section-tag::after {
    content: '';
    display: block;
    width: 32px;
    height: 2px;
    background: var(--grad-primary);
    border-radius: 2px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--clr-text);
}

/* ─── NAVIGATION ─── */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}

#header.scrolled {
    background: rgba(8, 12, 20, 0.85);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

[data-theme="light"] #header.scrolled {
    background: rgba(240, 242, 248, 0.85);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 20px var(--container-px);
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--clr-text);
    transition: var(--transition);
}

.nav-logo:hover {
    color: var(--clr-accent);
}

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

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

.nav-link {
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--clr-text-muted);
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--grad-primary);
    border-radius: 2px;
    transition: width var(--transition);
}

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

.nav-link.active::after {
    width: 20px;
}

.theme-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--clr-glass);
    border: 1px solid var(--clr-glass-border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
}

.theme-btn:hover {
    border-color: var(--clr-accent);
    transform: rotate(20deg) scale(1.1);
}

.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--clr-glass-border);
    background: var(--clr-glass);
}

.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--clr-text);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-hamburger.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.nav-hamburger.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ─── HERO ─── */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(108, 99, 255, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(108, 99, 255, 0.06) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
}

.hero-orbs {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.45;
    animation: float 8s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #6c63ff, transparent);
    top: -150px;
    left: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, #00d4aa, transparent);
    bottom: -100px;
    right: 0;
    animation-delay: -3s;
}

.orb-3 {
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, #ff6b6b, transparent);
    top: 30%;
    right: 20%;
    animation-delay: -6s;
}

@keyframes float {

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

    50% {
        transform: translateY(-30px) scale(1.05);
    }
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    max-width: 780px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    background: var(--clr-glass);
    border: 1px solid var(--clr-glass-border);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--clr-text-muted);
    backdrop-filter: var(--blur);
}

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

@keyframes pulse-dot {

    0%,
    100% {
        box-shadow: 0 0 6px var(--clr-accent-2);
    }

    50% {
        box-shadow: 0 0 16px var(--clr-accent-2), 0 0 30px rgba(0, 212, 170, 0.4);
    }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--clr-text);
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--clr-text-muted);
    max-width: 560px;
    line-height: 1.6;
}

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

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 20px 28px;
    background: var(--clr-glass);
    border: 1px solid var(--clr-glass-border);
    border-radius: var(--radius-md);
    backdrop-filter: var(--blur);
    margin-top: 8px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-num {
    display: block;
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    background: var(--grad-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--clr-text-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--clr-glass-border);
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    animation: bounce 2s ease-in-out infinite;
}

.scroll-dot {
    width: 28px;
    height: 44px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    position: relative;
}

.scroll-dot::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--clr-accent);
    border-radius: 2px;
    animation: scroll-anim 2s ease infinite;
}

@keyframes scroll-anim {
    0% {
        top: 6px;
        opacity: 1;
    }

    100% {
        top: 22px;
        opacity: 0;
    }
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(-8px);
    }
}

.about-cv-wrap {
    margin-top: 8px;
}

/* ─── Chip link (clickable chip) ─── */
.chip-link {
    display: inline-flex;
    align-items: center;
    height: 28px;
    padding: 0 12px;
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 500;
    background: rgba(0, 212, 170, 0.12);
    color: var(--clr-accent-2);
    border: 1px solid rgba(0, 212, 170, 0.25);
    letter-spacing: 0.02em;
    text-decoration: none;
    transition: var(--transition);
}

.chip-link:hover {
    background: rgba(0, 212, 170, 0.22);
    border-color: var(--clr-accent-2);
}

/* ─── Research section ─── */
.research-section {
    background: linear-gradient(180deg, var(--clr-bg) 0%, rgba(0, 212, 170, 0.03) 100%);
}

/* ─── Awards section ─── */
.awards-section {
    background: var(--clr-bg);
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.award-card {
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: var(--transition);
}

.award-card:hover {
    border-color: rgba(108, 99, 255, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card), var(--shadow-glow);
}

.award-icon {
    font-size: 2.5rem;
    line-height: 1;
}

.award-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
}

.award-card p {
    font-size: 0.93rem;
    color: var(--clr-text-muted);
    line-height: 1.7;
}

/* ─── ABOUT ─── */
.about-section {
    background: var(--clr-bg);
}

.about-grid {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 72px;
    align-items: start;
}

.about-image-wrap {
    position: sticky;
    top: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.about-image-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 280px;
    height: 280px;
    background: var(--grad-primary);
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
}

.about-image-frame {
    position: relative;
    width: 300px;
    height: 360px;
    border-radius: 28px;
    overflow: hidden;
    border: 2px solid transparent;
    background: linear-gradient(var(--clr-bg), var(--clr-bg)) padding-box,
        var(--grad-primary) border-box;
    box-shadow: var(--shadow-card), 0 0 60px rgba(108, 99, 255, 0.25), 0 0 0 1px rgba(108, 99, 255, 0.1);
    animation: photo-glow 4s ease-in-out infinite alternate;
}

@keyframes photo-glow {
    from {
        box-shadow: var(--shadow-card), 0 0 40px rgba(108, 99, 255, 0.2);
    }

    to {
        box-shadow: var(--shadow-card), 0 0 70px rgba(0, 212, 170, 0.3);
    }
}

.about-image-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
}

.about-image-placeholder {
    display: none;
    width: 100%;
    height: 100%;
    background: var(--grad-primary);
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 800;
    color: white;
}

.about-image-frame.no-img img {
    display: none;
}

.about-image-frame.no-img .about-image-placeholder {
    display: flex;
}

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

.social-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--clr-glass);
    border: 1px solid var(--clr-glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-text-muted);
    transition: var(--transition);
}

.social-btn:hover {
    color: var(--clr-accent);
    border-color: var(--clr-accent);
    background: rgba(108, 99, 255, 0.1);
    transform: translateY(-2px);
}

.about-text-wrap {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.about-intro {
    font-size: 1.15rem;
    color: var(--clr-text);
    line-height: 1.8;
}

.about-intro strong {
    color: var(--clr-accent);
}

.about-body {
    font-size: 1rem;
    color: var(--clr-text-muted);
    line-height: 1.8;
}

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

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 20px;
    background: var(--clr-glass);
    border: 1px solid var(--clr-glass-border);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.highlight-item:hover {
    border-color: rgba(108, 99, 255, 0.3);
    background: rgba(108, 99, 255, 0.05);
}

.highlight-icon {
    font-size: 1.5rem;
    line-height: 1;
    flex-shrink: 0;
}

.highlight-item strong {
    display: block;
    font-weight: 600;
    margin-bottom: 2px;
}

.highlight-item span {
    font-size: 0.88rem;
    color: var(--clr-text-muted);
}

/* ─── EDUCATION ─── */
.education-section {
    background: linear-gradient(180deg, var(--clr-bg) 0%, rgba(108, 99, 255, 0.03) 100%);
}

/* ─── TIMELINE ─── */
.timeline {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 32px;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 14px;
    bottom: 20px;
    width: 2px;
    background: linear-gradient(to bottom, var(--clr-accent), var(--clr-accent-2), transparent);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
}

.timeline-dot {
    position: absolute;
    left: -34px;
    top: 24px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--grad-primary);
    box-shadow: 0 0 16px rgba(108, 99, 255, 0.5);
    border: 2px solid var(--clr-bg);
}

.timeline-card {
    padding: 28px;
    transition: var(--transition);
}

.timeline-card:hover {
    border-color: rgba(108, 99, 255, 0.25);
    transform: translateX(4px);
}

.timeline-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 12px;
}

.timeline-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
}

.timeline-info h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.timeline-period {
    font-size: 0.82rem;
    color: var(--clr-accent);
    font-weight: 600;
    letter-spacing: 0.04em;
}

.timeline-degree {
    font-size: 1rem;
    color: var(--clr-accent-2);
    font-weight: 600;
    margin-bottom: 10px;
}

.timeline-desc {
    font-size: 0.95rem;
    color: var(--clr-text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
}

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

/* ─── SKILLS ─── */
.skills-section {
    background: var(--clr-bg);
}

.skills-categories {
    display: flex;
    flex-direction: column;
    gap: 48px;
}


.category-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--clr-text-muted);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.category-icon {
    font-size: 1.2rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
}

.skill-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 12px;
    background: var(--clr-glass);
    border: 1px solid var(--clr-glass-border);
    border-radius: var(--radius-md);
    cursor: default;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--grad-primary);
    opacity: 0;
    transition: var(--transition);
}

.skill-card:hover {
    border-color: rgba(108, 99, 255, 0.4);
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-glow);
}

.skill-card:hover::before {
    opacity: 0.06;
}

.skill-card i {
    font-size: 2.5rem;
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

.skill-card:hover i {
    transform: scale(1.1);
}

.skill-card span {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--clr-text-muted);
    position: relative;
    z-index: 1;
}

/* ─── PROJECTS ─── */
.projects-section {
    background: linear-gradient(180deg, var(--clr-bg) 0%, rgba(0, 212, 170, 0.03) 100%);
}

.projects-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

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

.filter-btn {
    padding: 8px 20px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    background: var(--clr-glass);
    border: 1px solid var(--clr-glass-border);
    color: var(--clr-text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    color: var(--clr-text);
    border-color: rgba(108, 99, 255, 0.3);
}

.filter-btn.active {
    background: var(--grad-primary);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 16px rgba(108, 99, 255, 0.4);
}

.search-wrapper {
    position: relative;
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--clr-text-muted);
    pointer-events: none;
}

#project-search {
    padding: 11px 18px 11px 40px;
    border-radius: 100px;
    border: 1px solid var(--clr-glass-border);
    background: var(--clr-glass);
    font-size: 0.9rem;
    width: 260px;
    color: var(--clr-text);
    transition: var(--transition);
}

#project-search:focus {
    border-color: var(--clr-accent);
    box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
}

#project-search::placeholder {
    color: var(--clr-text-dim);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.project-card {
    background: var(--clr-glass);
    border: 1px solid var(--clr-glass-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition: var(--transition);
    cursor: default;
    animation: card-enter 0.5s ease both;
}

@keyframes card-enter {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.project-card:hover {
    border-color: rgba(108, 99, 255, 0.35);
    transform: translateY(-6px);
    box-shadow: var(--shadow-card), 0 0 40px rgba(108, 99, 255, 0.12);
}

.project-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.project-card h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.3;
}

.project-card-arrow {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(108, 99, 255, 0.12);
    border: 1px solid rgba(108, 99, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-accent);
    transition: var(--transition);
}

.project-card:hover .project-card-arrow {
    background: var(--clr-accent);
    color: #fff;
    transform: rotate(-45deg);
}

.project-card p {
    font-size: 0.9rem;
    color: var(--clr-text-muted);
    line-height: 1.65;
    flex: 1;
}

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

.project-tag {
    display: inline-flex;
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    background: rgba(0, 212, 170, 0.1);
    color: var(--clr-accent-2);
    border: 1px solid rgba(0, 212, 170, 0.2);
}

.project-actions {
    display: flex;
    gap: 10px;
    margin-top: 4px;
}

.project-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: 100px;
    font-size: 0.83rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.project-btn-outline {
    border: 1px solid var(--clr-glass-border);
    color: var(--clr-text-muted);
}

.project-btn-outline:hover {
    border-color: var(--clr-accent);
    color: var(--clr-accent);
}

.project-btn-filled {
    background: var(--grad-primary);
    color: #fff;
}

.project-btn-filled:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* ─── MODAL ─── */
.modal {
    position: fixed;
    inset: 0;
    z-index: 9000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.open {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    width: 100%;
    padding: 36px;
    animation: modal-enter 0.3s ease;
}

@keyframes modal-enter {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--clr-glass);
    border: 1px solid var(--clr-glass-border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-text-muted);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--clr-text);
    border-color: var(--clr-accent);
}

.modal-header {
    margin-bottom: 16px;
}

.modal-header h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 12px;
}

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

.modal-desc {
    font-size: 0.95rem;
    color: var(--clr-text-muted);
    line-height: 1.7;
    margin-bottom: 24px;
}

/* ─── EXPERIENCE ─── */
.experience-section {
    background: var(--clr-bg);
}

/* ─── CONTACT ─── */
.contact-section {
    background: linear-gradient(180deg, var(--clr-bg) 0%, rgba(108, 99, 255, 0.04) 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    align-items: start;
}

.contact-info-panel {
    padding: 36px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-info-panel h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--grad-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-info-panel>p {
    color: var(--clr-text-muted);
    line-height: 1.7;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--clr-glass);
    border: 1px solid var(--clr-glass-border);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.contact-link:hover {
    border-color: rgba(108, 99, 255, 0.3);
    transform: translateX(4px);
}

.contact-link-icon {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(108, 99, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--clr-accent);
    flex-shrink: 0;
}

.contact-link-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--clr-text-muted);
}

.contact-link-value {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--clr-text);
}

.contact-form {
    padding: 36px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--clr-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.form-group input,
.form-group textarea {
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--clr-glass-border);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    color: var(--clr-text);
    transition: var(--transition);
    resize: vertical;
}

[data-theme="light"] .form-group input,
[data-theme="light"] .form-group textarea {
    background: rgba(0, 0, 0, 0.04);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--clr-accent);
    box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
    background: rgba(108, 99, 255, 0.04);
}

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

.form-feedback {
    min-height: 1.2em;
    font-size: 0.9rem;
    color: var(--clr-accent-2);
    font-weight: 500;
}

/* ─── FOOTER ─── */
.site-footer {
    padding: 40px 0;
    border-top: 1px solid var(--clr-glass-border);
    background: var(--clr-bg);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-copy {
    color: var(--clr-text-muted);
    font-size: 0.9rem;
}

.footer-copy strong {
    color: var(--clr-text);
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--clr-text-muted);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--clr-accent);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
    .about-grid {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 40px;
    }

    .about-image-wrap {
        position: relative !important;
        top: 0 !important;
        width: 100%;
        max-width: 320px;
        margin-bottom: 0;
    }

    .about-text-wrap {
        text-align: center;
        width: 100%;
    }

    .about-highlights {
        align-items: stretch;
    }

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

    .skills-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --section-py: 70px;
    }

    .nav-hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: min(300px, 85vw);
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
        gap: 8px;
        padding: 60px 32px;
        background: rgba(8, 12, 20, 0.98);
        backdrop-filter: var(--blur);
        border-left: 1px solid var(--clr-glass-border);
        transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
    }

    [data-theme="light"] .nav-links {
        background: rgba(240, 242, 248, 0.98);
    }

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

    .nav-link {
        font-size: 1.1rem;
        padding: 12px 20px;
        width: 100%;
    }

    .hero-content {
        align-items: center;
        text-align: center;
    }

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

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

    .stat-divider {
        display: none;
    }

    .projects-controls {
        flex-direction: column;
        align-items: stretch;
    }

    #project-search {
        width: 100%;
    }

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

    .timeline {
        padding-left: 28px;
    }

    .timeline-dot {
        left: -22px;
    }

    .timeline-card {
        padding: 20px;
    }

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

@media (max-width: 480px) {
    .hero-stats {
        padding: 16px;
        gap: 20px;
    }

    .stat-num {
        font-size: 1.5rem;
    }
}

/* ─── Scroll progress bar ─── */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--grad-primary);
    z-index: 9999;
    transition: width 0.1s linear;
    box-shadow: 0 0 10px rgba(108, 99, 255, 0.6);
}

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

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(108, 99, 255, 0.4);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--clr-accent);
}