:root {
    --bg: #0e0e12;
    --bg-raised: #16161d;
    --bg-card: #1c1c26;
    --text: #c9cad0;
    --text-muted: #6b6e7a;
    --accent: #64ffda;
    --accent-dim: rgba(100, 255, 218, 0.1);
    --heading: #e4e5ea;
    --mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', 'Courier New', monospace;
    --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    --border: #2a2a35;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 70px;
}

body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* --- NAV --- */

nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(14, 14, 18, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--mono);
    font-size: 1.1rem;
    color: var(--accent);
    text-decoration: none;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.blink {
    animation: blink 1s step-end infinite;
}

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

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
    position: relative;
}

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

.nav-links a::before {
    content: '>';
    margin-right: 4px;
    color: var(--accent);
    opacity: 0;
    transition: opacity 0.2s;
}

.nav-links a:hover::before {
    opacity: 1;
}

/* --- HERO --- */

header {
    min-height: 85vh;
    display: flex;
    align-items: center;
    padding: 80px 24px;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(100, 255, 218, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(100, 150, 255, 0.03) 0%, transparent 50%),
        var(--bg);
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

.hero-greeting {
    font-family: var(--mono);
    font-size: 1rem;
    color: var(--accent);
    margin-bottom: 16px;
}

header h1 {
    font-size: clamp(2.5rem, 7vw, 4.5rem);
    color: var(--heading);
    line-height: 1.1;
    font-weight: 800;
    letter-spacing: -1.5px;
    margin-bottom: 20px;
}

.hero-typer {
    font-family: var(--mono);
    font-size: clamp(1.1rem, 3vw, 1.5rem);
    color: var(--text);
    margin-bottom: 36px;
    min-height: 2.4em;
}

.hero-typer #typer {
    color: var(--accent);
}

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

.hero-tagline {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 560px;
    line-height: 1.8;
    margin-bottom: 36px;
}

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

.btn {
    font-family: var(--mono);
    font-size: 0.85rem;
    padding: 12px 28px;
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.2s;
    display: inline-block;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg);
    font-weight: 600;
}

.btn-primary:hover {
    background: #4de8c2;
    transform: translateY(-1px);
}

.btn-outline {
    border: 1px solid var(--accent);
    color: var(--accent);
}

.btn-outline:hover {
    background: var(--accent-dim);
    transform: translateY(-1px);
}

/* --- MAIN --- */

main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 100px 0;
    border-top: 1px solid var(--border);
}

h2 {
    font-size: 1.5rem;
    color: var(--heading);
    font-weight: 700;
    margin-bottom: 32px;
    letter-spacing: -0.5px;
}

.section-marker {
    font-family: var(--mono);
    color: var(--accent);
    margin-right: 8px;
    font-weight: 400;
}

/* --- ABOUT --- */

.about-content {
    max-width: 640px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.about-content p {
    font-size: 1.05rem;
    color: var(--text);
}

/* --- PROJECTS --- */

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 28px 32px;
    transition: border-color 0.25s, transform 0.25s;
}

.project-card:hover {
    border-color: var(--accent);
    transform: translateX(4px);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 12px;
}

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

.project-card h3 a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}

.project-card h3 a:hover {
    color: var(--accent);
}

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

.project-tags span {
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--accent);
    background: var(--accent-dim);
    padding: 3px 10px;
    border-radius: 3px;
}

.project-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* --- SKILLS --- */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
}

.skill-group h3 {
    font-family: var(--mono);
    font-size: 0.8rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 14px;
}

.skill-group ul {
    list-style: none;
}

.skill-group li {
    font-size: 0.95rem;
    color: var(--text);
    padding: 6px 0;
    border-bottom: 1px solid var(--border);
    transition: color 0.2s, padding-left 0.2s;
}

.skill-group li:last-child {
    border-bottom: none;
}

.skill-group li:hover {
    color: var(--heading);
    padding-left: 6px;
}

/* --- CONTACT --- */

.contact-text {
    color: var(--text-muted);
    margin-bottom: 24px;
    font-size: 1.05rem;
}

.contact-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    text-decoration: none;
    font-family: var(--mono);
    font-size: 0.9rem;
    transition: border-color 0.2s, color 0.2s;
}

.contact-card svg {
    flex-shrink: 0;
}

.contact-card:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* --- FOOTER --- */

footer {
    border-top: 1px solid var(--border);
    text-align: center;
    padding: 40px 24px;
    color: var(--text-muted);
    font-family: var(--mono);
    font-size: 0.8rem;
}

/* --- ANIMATIONS --- */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- RESPONSIVE --- */

@media (max-width: 600px) {
    .nav-links {
        gap: 18px;
    }

    .nav-links a::before {
        display: none;
    }

    header {
        min-height: 70vh;
        padding: 60px 20px;
    }

    section {
        padding: 60px 0;
    }

    .project-header {
        flex-direction: column;
    }

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