/* ================================================
   AI TERMINAL PORTFOLIO — Design System
   ================================================ */

/* --- CSS Variables (Dark Only) --- */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-elevated: #1a1a1a;
    --bg-terminal: #0d0d0d;
    --border: #262626;
    --border-hover: #404040;

    --text-primary: #e5e5e5;
    --text-secondary: #a3a3a3;
    --text-muted: #525252;

    --accent: #00ff88;
    --accent-dim: rgba(0, 255, 136, 0.08);
    --accent-border: rgba(0, 255, 136, 0.2);
    --accent-glow: rgba(0, 255, 136, 0.25);
    --accent-alt: #818cf8;
    --accent-alt-dim: rgba(129, 140, 248, 0.1);

    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
    --shadow-glow: 0 0 20px var(--accent-glow);

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

/* --- Animated Grid Background --- */
.grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.15;
    mask-image: radial-gradient(ellipse at 50% 30%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at 50% 30%, black 20%, transparent 70%);
}

/* --- Scroll Reveal --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.25s; }

/* --- Container --- */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

/* --- Section Headers --- */
.section-label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 1px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-label::before {
    content: '//';
    opacity: 0.5;
}

.section-heading {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 48px;
    letter-spacing: -0.5px;
}

/* ================================================
   HEADER / NAVIGATION
   ================================================ */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}

.logo {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
}

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

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

#desktop-nav ul {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-muted);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

.nav-link:hover {
    color: var(--text-secondary);
    background: var(--bg-elevated);
    border-color: var(--border);
}

.nav-link.active {
    color: var(--accent);
    background: var(--accent-dim);
    border-color: var(--accent-border);
}

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

.icon-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 0.95rem;
}

.icon-btn:hover {
    color: var(--accent);
    border-color: var(--accent-border);
    background: var(--accent-dim);
}

.mobile-only {
    display: none;
}

/* Mobile Menu */
.mobile-nav-menu {
    position: fixed;
    top: 56px;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    z-index: 999;
    display: none;
    transform: translateY(-10px);
    opacity: 0;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.mobile-nav-menu.open {
    display: block;
    transform: translateY(0);
    opacity: 1;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    list-style: none;
    gap: 4px;
}

.mobile-nav-link {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.mobile-nav-link:hover {
    background: var(--accent-dim);
    color: var(--accent);
}

/* ================================================
   HERO SECTION — Terminal Window
   ================================================ */
.hero-section {
    padding-top: 120px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 60px;
    align-items: center;
}

/* Terminal Window */
.terminal-window {
    background: var(--bg-terminal);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #28c840; }

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

.terminal-body {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
    min-height: 280px;
}

.terminal-line {
    margin-bottom: 4px;
    opacity: 0;
    transform: translateY(5px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.terminal-line.visible {
    opacity: 1;
    transform: translateY(0);
}

.terminal-prompt {
    color: var(--accent);
    font-weight: 600;
}

.terminal-command {
    color: var(--text-primary);
}

.terminal-output {
    color: var(--text-secondary);
    padding-left: 4px;
}

.terminal-cursor {
    display: inline-block;
    width: 8px;
    height: 16px;
    background: var(--accent);
    animation: blink-cursor 1s step-end infinite;
    vertical-align: middle;
    margin-left: 2px;
}

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

/* Hero CTA Buttons */
.hero-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    padding: 0 24px 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
    text-decoration: none;
}

.btn-primary {
    background: var(--accent);
    color: #0a0a0a;
    border-color: var(--accent);
}

.btn-primary:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border-color: var(--border);
}

.btn-secondary:hover {
    border-color: var(--accent-border);
    color: var(--accent);
    background: var(--accent-dim);
}

/* Avatar */
.hero-avatar-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.avatar-frame {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--accent-border);
    box-shadow: 0 0 30px var(--accent-glow), 0 0 60px rgba(0,255,136,0.08);
    transition: var(--transition);
}

.avatar-frame:hover {
    box-shadow: 0 0 40px var(--accent-glow), 0 0 80px rgba(0,255,136,0.12);
    transform: scale(1.03);
}

.avatar-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 15%;
}

.status-badge {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent);
    background: var(--accent-dim);
    border: 1px solid var(--accent-border);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--accent-glow); }
    50% { opacity: 0.7; box-shadow: 0 0 0 6px transparent; }
}

.social-row {
    display: flex;
    gap: 8px;
}

.social-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition-fast);
}

.social-btn:hover {
    color: var(--accent);
    border-color: var(--accent-border);
    background: var(--accent-dim);
}

/* ================================================
   STATS BAR
   ================================================ */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 0;
}

.stat-item {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 20px 24px;
    border-right: 1px solid var(--border);
    transition: var(--transition-fast);
}

.stat-item:last-child {
    border-right: none;
}

.stat-item:hover {
    background: var(--accent-dim);
}

.stat-icon {
    font-size: 1.2rem;
    opacity: 0.6;
}

.stat-text {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

/* ================================================
   SKILLS — Tech Tags
   ================================================ */
.skills-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.skills-grid {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.skill-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skill-group-label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

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

.skill-tag {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 7px 16px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    cursor: default;
}

.skill-tag:hover {
    color: var(--accent);
    border-color: var(--accent-border);
    background: var(--accent-dim);
    box-shadow: 0 0 12px rgba(0,255,136,0.08);
}

/* ================================================
   PROJECTS — Bento Grid
   ================================================ */
.bento-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    grid-template-rows: auto auto;
    gap: 16px;
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: var(--accent-border);
    box-shadow: 0 0 30px rgba(0,255,136,0.05);
    transform: translateY(-4px);
}

.project-card.featured {
    grid-row: 1 / 2;
    grid-column: 1 / 2;
}

.project-card.full-width {
    grid-column: 1 / -1;
}

.project-img-wrapper {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--bg-elevated);
}

.project-card.featured .project-img-wrapper {
    aspect-ratio: 16 / 10;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
    filter: brightness(0.85);
}

.project-card:hover .project-img {
    transform: scale(1.05);
    filter: brightness(0.95);
}

.project-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    gap: 12px;
}

.project-title {
    font-family: var(--font-mono);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
}

.project-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.55;
}

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

.project-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent);
    background: var(--accent-dim);
    border: 1px solid var(--accent-border);
    padding: 3px 10px;
    border-radius: var(--radius-full);
}

.project-links-row {
    display: flex;
    gap: 8px;
    padding: 0 20px 20px;
}

.project-link {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-fast);
}

.project-link:hover {
    color: var(--accent);
    border-color: var(--accent-border);
    background: var(--accent-dim);
}

/* ================================================
   EXPERIENCE — Terminal Timeline
   ================================================ */
.timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
    padding-left: 32px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: var(--border);
}

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

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -28px;
    top: 8px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 2px solid var(--accent);
    z-index: 1;
    transition: var(--transition);
}

.timeline-item:hover .timeline-dot {
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.timeline-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    transition: var(--transition);
}

.timeline-item:hover .timeline-card {
    border-color: var(--accent-border);
    box-shadow: 0 0 20px rgba(0,255,136,0.04);
}

.timeline-role {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.timeline-company {
    font-size: 0.88rem;
    color: var(--accent);
    margin-bottom: 10px;
}

.timeline-company a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.timeline-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.55;
}

/* ================================================
   CONTACT — CTA Section
   ================================================ */
.contact-section {
    text-align: center;
}

.contact-heading {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.contact-subtext {
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    max-width: 600px;
    margin: 0 auto 32px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
}

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

.contact-card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-card-text {
    text-align: left;
}

.contact-card-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.contact-card-value {
    font-size: 0.88rem;
    color: var(--text-primary);
    font-weight: 500;
}

.copy-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--accent);
    background: var(--bg-elevated);
    border: 1px solid var(--accent-border);
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 2000;
    pointer-events: none;
}

.copy-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ================================================
   FOOTER
   ================================================ */
#main-footer {
    border-top: 1px solid var(--border);
    padding: 32px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-text {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
}

.footer-socials {
    display: flex;
    gap: 8px;
}

.footer-socials a {
    color: var(--text-muted);
    font-size: 1rem;
    transition: var(--transition-fast);
    padding: 4px;
}

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

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

    .hero-avatar-wrapper {
        order: -1;
    }

    .avatar-frame {
        width: 160px;
        height: 160px;
    }

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

    .project-card.featured,
    .project-card.full-width {
        grid-column: 1;
        grid-row: auto;
    }

    .stats-bar {
        flex-wrap: wrap;
    }

    .stat-item {
        flex: 1 1 50%;
        border-bottom: 1px solid var(--border);
    }

    .stat-item:nth-child(2) {
        border-right: none;
    }

    .stat-item:nth-last-child(-n+2) {
        border-bottom: none;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 70px 0;
    }

    .section-heading {
        font-size: 1.4rem;
    }

    .hero-section {
        padding-top: 100px;
        min-height: auto;
    }

    .mobile-only {
        display: flex;
    }

    #desktop-nav {
        display: none;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .terminal-body {
        font-size: 0.82rem;
        padding: 16px;
    }

    .hero-actions {
        flex-wrap: wrap;
        padding: 0 16px 16px;
    }
}

@media (max-width: 480px) {
    .stats-bar {
        flex-direction: column;
    }

    .stat-item {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .stat-item:last-child {
        border-bottom: none;
    }

    .hero-grid {
        gap: 24px;
    }

    .avatar-frame {
        width: 130px;
        height: 130px;
    }
}