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

:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #0d1321;
    --bg-card: #111827;
    --bg-card-hover: #1a2332;
    --accent: #00ff88;
    --accent-dim: #00cc6a;
    --accent-glow: rgba(0, 255, 136, 0.15);
    --text-primary: #e0e6ed;
    --text-secondary: #8892a4;
    --text-muted: #4a5568;
    --border: #1e293b;
    --border-accent: rgba(0, 255, 136, 0.3);
    --danger: #ff3e3e;
    --warning: #ffaa00;
    --font-mono: "Fira Code", "JetBrains Mono", "Courier New", monospace;
    --font-sans: "Inter", "Segoe UI", system-ui, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== SCANLINES OVERLAY ===== */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 255, 136, 0.015) 2px,
        rgba(0, 255, 136, 0.015) 4px
    );
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-dim);
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(10, 14, 23, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 0.6rem 2rem;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
}

.nav-logo .prompt {
    color: var(--accent);
    animation: blink 1.2s step-end infinite;
}

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

.nav-logo .path {
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-family: var(--font-mono);
    transition: color 0.3s;
    position: relative;
}

.nav-links a::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s;
}

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

.nav-links a:hover::after {
    width: 100%;
}

/* Mobile menu */
.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    color: var(--accent);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 600px;
    height: 600px;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
    background: var(--accent-glow);
    border: 1px solid var(--border-accent);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.hero h1 .highlight {
    color: var(--accent);
    position: relative;
}

.hero .subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.8rem;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-primary);
    font-weight: 700;
}

.btn-primary:hover {
    box-shadow: 0 0 20px var(--accent-glow), 0 0 40px rgba(0, 255, 136, 0.1);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background: var(--accent-glow);
    transform: translateY(-2px);
}

/* ===== SECTION LAYOUT ===== */
.section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== PROJECT CARDS ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.4s ease;
    position: relative;
}

.project-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}

.project-card:hover {
    border-color: var(--border-accent);
    background: var(--bg-card-hover);
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 30px var(--accent-glow);
}

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

.project-thumb {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    position: relative;
    overflow: hidden;
}

.project-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.project-thumb .placeholder-icon {
    font-size: 3rem;
    color: var(--accent);
    opacity: 0.3;
}

.project-body {
    padding: 1.5rem;
}

.project-number {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent);
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.project-body h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.project-body p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.2rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.25rem 0.7rem;
    border-radius: 20px;
    background: var(--accent-glow);
    color: var(--accent);
    border: 1px solid var(--border-accent);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent);
    text-decoration: none;
    transition: gap 0.3s;
}

.project-link:hover {
    gap: 0.8rem;
}

.project-link .arrow {
    transition: transform 0.3s;
}

.project-link:hover .arrow {
    transform: translateX(4px);
}

/* ===== ABOUT SECTION ===== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.2rem;
    font-size: 0.95rem;
}

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

.skill-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-secondary);
    padding: 0.6rem 0.9rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    transition: all 0.3s;
}

.skill-item:hover {
    border-color: var(--border-accent);
    color: var(--accent);
}

.skill-item .dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ===== CONTACT SECTION ===== */
.contact-content {
    text-align: center;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.4rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    transition: all 0.3s;
}

.contact-link:hover {
    border-color: var(--border-accent);
    color: var(--accent);
    background: var(--accent-glow);
}

/* ===== FOOTER ===== */
.footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

/* ===== PROJECT PAGE ===== */
.project-hero {
    padding: 8rem 2rem 3rem;
    text-align: center;
    position: relative;
}

.project-hero::before {
    content: "";
    position: absolute;
    top: 40%;
    left: 50%;
    width: 500px;
    height: 500px;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.project-hero .back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 2rem;
    transition: color 0.3s;
}

.project-hero .back-link:hover {
    color: var(--accent);
}

.project-hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.project-hero .project-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
    position: relative;
    z-index: 1;
}

.project-hero .meta-item {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.project-hero .meta-item span {
    color: var(--accent);
}

/* Project Content */
.project-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 2rem 5rem;
}

.project-content h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin: 3rem 0 1.2rem;
    color: var(--text-primary);
    padding-left: 1rem;
    border-left: 3px solid var(--accent);
}

.project-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.2rem;
    line-height: 1.8;
}

.project-content ul {
    list-style: none;
    margin-bottom: 1.5rem;
    padding-left: 1rem;
}

.project-content ul li {
    color: var(--text-secondary);
    font-size: 0.93rem;
    padding: 0.3rem 0;
    position: relative;
    padding-left: 1.2rem;
}

.project-content ul li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--accent);
}

/* Media in project */
.project-media {
    margin: 2rem 0;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg-secondary);
}

.project-media img {
    width: 100%;
    display: block;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.project-media img:hover {
    opacity: 0.85;
}

/* ===== DEFENSE TABLE ===== */
.defense-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.95rem;
}

.defense-table th,
.defense-table td {
    padding: 0.8rem 1rem;
    text-align: left;
    border: 1px solid var(--border);
}

.defense-table thead th {
    background: var(--bg-secondary);
    color: var(--accent);
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.defense-table tbody td {
    background: var(--bg-card);
    color: var(--text-primary);
}

.defense-table tbody tr:hover td {
    background: var(--bg-card-hover);
}

/* ===== LIGHTBOX MODAL ===== */
.lightbox-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.92);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    cursor: zoom-out;
}

.lightbox-overlay.active {
    display: flex;
}

.lightbox-overlay img {
    max-width: 90vw;
    max-height: 90vh;
    border-radius: 6px;
    box-shadow: 0 0 40px rgba(0, 255, 136, 0.15);
}

.lightbox-close {
    position: absolute;
    top: 1.2rem;
    right: 1.5rem;
    font-size: 2rem;
    color: var(--text-primary);
    background: none;
    border: none;
    cursor: pointer;
    z-index: 10001;
    line-height: 1;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.lightbox-close:hover {
    opacity: 1;
}

/* Side-by-side media rows */
.media-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

.media-row .project-media {
    margin: 0;
}

.media-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

.media-row-3 .project-media {
    margin: 0;
}

/* Small standalone media (limits width to avoid upscaling) */
.project-media.media-sm {
    max-width: 420px;
}

@media (max-width: 768px) {
    .media-row,
    .media-row-3 {
        grid-template-columns: 1fr;
    }
}

.project-media video {
    width: 100%;
    display: block;
}

.media-caption {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
    padding: 0.8rem 1rem;
    text-align: center;
    border-top: 1px solid var(--border);
}

/* Code blocks */
.code-block {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.2rem 1.5rem;
    margin: 1.5rem 0;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent);
    line-height: 1.6;
}



/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(10, 14, 23, 0.98);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border);
    }

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

    .nav-toggle {
        display: block;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero .subtitle {
        font-size: 1rem;
    }

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

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

    .project-hero h1 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.6rem;
    }

    .section {
        padding: 3rem 1rem;
    }

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