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

:root {
    --bg: #07070a;
    --bg-card: #0f0f12;
    --bg-card-hover: #16161b;
    --border: rgba(255,255,255,0.06);
    --border-hover: rgba(255,255,255,0.14);
    --text: #e2e2e8;
    --text-muted: #6b6b78;
    --text-dim: #4a4a56;
    --accent: #a78bfa;
    --accent-2: #60a5fa;
    --accent-3: #34d399;
    --gradient: linear-gradient(135deg, #a78bfa 0%, #60a5fa 100%);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --mono: 'JetBrains Mono', 'Fira Code', monospace;
    --radius: 14px;
    --shadow-card: 0 4px 24px rgba(0,0,0,0.35);
    --shadow-hover: 0 20px 48px rgba(0,0,0,0.5);
    --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ===== Background ===== */
.bg-grid {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
    background-size: 72px 72px;
    pointer-events: none;
    z-index: 0;
}

.bg-glow {
    position: fixed;
    top: -250px;
    left: 30%;
    width: 700px;
    height: 600px;
    background: radial-gradient(ellipse at center, rgba(167,139,250,0.1) 0%, transparent 65%);
    pointer-events: none;
    z-index: 0;
    animation: glow-drift 12s ease-in-out infinite alternate;
}

.bg-glow-2 {
    position: fixed;
    top: 20%;
    right: -100px;
    width: 500px;
    height: 500px;
    background: radial-gradient(ellipse at center, rgba(96,165,250,0.06) 0%, transparent 65%);
    pointer-events: none;
    z-index: 0;
    animation: glow-drift 16s ease-in-out infinite alternate-reverse;
}

@keyframes glow-drift {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(30px, 40px) scale(1.08); }
}

/* ===== Container ===== */
.container {
    max-width: 920px;
    margin: 0 auto;
    padding: 0 28px;
    position: relative;
    z-index: 1;
}

/* ===== Nav ===== */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 28px;
    background: rgba(7,7,10,0.75);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition), border-color var(--transition);
}

nav.scrolled {
    background: rgba(7,7,10,0.92);
    border-color: rgba(255,255,255,0.09);
}

.nav-inner {
    max-width: 920px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--mono);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text);
    letter-spacing: -0.02em;
    text-decoration: none;
    transition: color var(--transition);
}

.logo:hover { color: #fff; }

.dot { color: var(--accent); }

.nav-links {
    display: flex;
    gap: 28px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    transition: color var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient);
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
}

.nav-links a.active::after,
.nav-links a:hover::after {
    transform: scaleX(1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

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

.nav-toggle:hover span { background: var(--text); }

/* ===== Hero ===== */
.hero {
    padding: 168px 0 110px;
    text-align: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(52,211,153,0.08);
    border: 1px solid rgba(52,211,153,0.2);
    color: var(--accent-3);
    padding: 7px 18px;
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 600;
    margin-bottom: 36px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.badge-dot {
    width: 7px;
    height: 7px;
    background: var(--accent-3);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 0 0 rgba(52,211,153,0.4); }
    50% { opacity: 0.7; transform: scale(0.85); }
}

.hero h1 {
    font-size: clamp(3rem, 6.5vw, 5rem);
    font-weight: 700;
    letter-spacing: -0.05em;
    line-height: 1.08;
    margin-bottom: 22px;
    color: #fafafa;
}

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

.subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 14px;
    font-weight: 400;
    letter-spacing: 0.01em;
}

.desc {
    font-size: 0.98rem;
    color: var(--text-dim);
    max-width: 440px;
    margin: 0 auto 44px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--gradient);
    color: #fff;
    padding: 13px 28px;
    border-radius: 11px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.92rem;
    letter-spacing: 0.01em;
    transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 4px 20px rgba(167,139,250,0.2);
}

.btn-primary:hover {
    opacity: 0.88;
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(167,139,250,0.35);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--text-muted);
    padding: 13px 28px;
    border-radius: 11px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.92rem;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.btn-secondary:hover {
    color: var(--text);
    border-color: var(--border-hover);
    background: var(--bg-card);
    transform: translateY(-1px);
}

/* ===== Skills ===== */
.skills-section {
    padding: 0 0 88px;
}

.skills-label {
    text-align: center;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 20px;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.skill-tag {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 8px 18px;
    border-radius: 9px;
    font-size: 0.82rem;
    font-family: var(--mono);
    font-weight: 500;
    transition: all var(--transition);
    cursor: default;
    user-select: none;
}

.skill-tag {
    --glow: 0;
}

.skill-tag:hover {
    border-color: rgba(167,139,250,0.35);
    color: var(--accent);
    background: rgba(167,139,250,0.06);
    transform: translateY(-1px);
}

.skill-tags:hover .skill-tag {
    border-color: rgba(167,139,250, calc(0.1 + var(--glow, 0) * 0.5));
    color: color-mix(in srgb, var(--accent) calc(var(--glow, 0) * 80%), var(--text-muted));
    background: rgba(167,139,250, calc(var(--glow, 0) * 0.1));
    transform: translateY(calc(var(--glow, 0) * -2px));
    box-shadow: 0 0 calc(var(--glow, 0) * 18px) rgba(167,139,250, calc(var(--glow, 0) * 0.3));
}

/* ===== Divider ===== */
.section-divider { padding: 0; }
.section-divider hr {
    border: none;
    border-top: 1px solid var(--border);
    position: relative;
    z-index: 1;
}

/* ===== Projects ===== */
.projects {
    padding: 80px 0 100px;
}

.section-header {
    text-align: center;
    margin-bottom: 52px;
}

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    color: #fafafa;
    margin-bottom: 10px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 18px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient);
    opacity: 0;
    transition: opacity var(--transition);
    border-radius: var(--radius);
    pointer-events: none;
}

.project-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    background: var(--bg-card-hover);
}

.project-card:hover::before { opacity: 0.025; }

.project-card.featured {
    border-color: rgba(167,139,250,0.2);
    background: linear-gradient(145deg, #0f0f14, #0d0d12);
}

.project-card.featured:hover {
    border-color: rgba(167,139,250,0.4);
}

.card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 18px;
}

.card-icon {
    font-size: 2.2rem;
    line-height: 1;
    filter: drop-shadow(0 2px 8px rgba(0,0,0,0.3));
}

.card-links {
    display: flex;
    gap: 10px;
    margin-top: 4px;
}

.icon-link {
    color: var(--text-dim);
    transition: color var(--transition), transform var(--transition);
    display: flex;
    align-items: center;
    padding: 4px;
    border-radius: 6px;
}

.icon-link:hover {
    color: var(--text);
    transform: scale(1.1);
}

.project-card h3 {
    font-size: 1.12rem;
    font-weight: 600;
    color: #fafafa;
    margin-bottom: 10px;
    letter-spacing: -0.025em;
}

.card-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.65;
    margin-bottom: 22px;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.card-tags span {
    background: rgba(255,255,255,0.035);
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-family: var(--mono);
    font-weight: 500;
}

/* ===== Contact ===== */
.contact {
    padding: 0 0 120px;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid rgba(167,139,250,0.15);
    border-radius: 20px;
    padding: 64px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.contact-glow {
    position: absolute;
    top: -80px;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    height: 300px;
    background: radial-gradient(ellipse at center, rgba(167,139,250,0.08) 0%, transparent 70%);
    pointer-events: none;
}

.contact-card h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #fafafa;
    letter-spacing: -0.04em;
    margin-bottom: 14px;
}

.contact-card > p {
    color: var(--text-muted);
    font-size: 0.97rem;
    margin-bottom: 36px;
}

.contact-btn {
    font-size: 0.95rem;
    margin-bottom: 32px;
}

.social-links {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    padding: 9px 18px;
    border-radius: 9px;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.social-links a:hover {
    color: var(--text);
    border-color: var(--border-hover);
    background: rgba(255,255,255,0.03);
    transform: translateY(-2px);
}

/* ===== Footer ===== */
footer {
    padding: 28px 0;
    border-top: 1px solid var(--border);
}

footer p {
    text-align: center;
    color: var(--text-dim);
    font-size: 0.82rem;
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
    .hero { padding: 130px 0 80px; }
    .hero h1 { font-size: 2.6rem; }
    .contact-card { padding: 44px 24px; }
    .section-header h2 { font-size: 1.8rem; }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(7,7,10,0.97);
        border-bottom: 1px solid var(--border);
        padding: 16px 28px;
    }

    .nav-links.open { display: flex; }

    .nav-links a {
        padding: 12px 0;
        border-bottom: 1px solid var(--border);
        font-size: 0.95rem;
    }

    .nav-links a:last-child { border-bottom: none; }
    .nav-links a::after { display: none; }

    .nav-toggle { display: flex; }

    nav { padding: 14px 20px; position: relative; }
}