/* ============================================
   Engineered by Breaden - Styles
   Dark CS/Terminal Theme
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: #1a1f2e;
    --bg-card-hover: #222940;
    --border: #1e293b;
    --border-glow: #00d4ff33;

    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --accent-cyan: #00d4ff;
    --accent-green: #10b981;
    --accent-violet: #8b5cf6;
    --accent-amber: #f59e0b;
    --accent-rose: #f43f5e;
    --accent-blue: #3b82f6;
    --accent-electric: #00ff88;

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

    --nav-height: 60px;
    --section-padding: 72px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

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

::selection {
    background: var(--accent-cyan);
    color: var(--bg-primary);
}

a {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #5de5ff;
}

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

/* --- Particle Canvas --- */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* --- Navigation --- */
#nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: background 0.3s, box-shadow 0.3s;
}

#nav.scrolled {
    background: rgba(10, 14, 23, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 500;
    color: var(--accent-green) !important;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: color 0.2s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-cyan);
    transition: width 0.3s;
}

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

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

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

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-secondary);
    transition: all 0.3s;
}

/* --- Hero Section --- */
#hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    padding: 0 24px;
}

.terminal {
    width: 100%;
    max-width: 720px;
    background: rgba(17, 24, 39, 0.9);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow:
        0 0 0 1px rgba(0, 255, 136, 0.08),
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 80px -20px rgba(0, 255, 136, 0.12),
        0 0 120px -30px rgba(0, 212, 255, 0.08);
    animation: terminalFadeIn 1s ease-out;
}

@keyframes terminalFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

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

.terminal-dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #f43f5e; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #10b981; }

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-muted);
}

.terminal-body {
    padding: 28px;
    font-family: var(--font-mono);
    font-size: 1.05rem;
    line-height: 1.9;
    min-height: 300px;
}

.terminal-body .line {
    margin-bottom: 4px;
    opacity: 0;
    animation: lineAppear 0.3s ease-out forwards;
}

.terminal-body .prompt {
    color: var(--accent-green);
    margin-right: 8px;
    user-select: none;
}

.terminal-body .command {
    color: var(--accent-cyan);
}

.terminal-body .output {
    color: var(--text-secondary);
}

.terminal-body .output.highlight {
    color: var(--text-primary);
}

.terminal-body .output.name {
    color: var(--accent-amber);
    font-weight: 500;
    font-size: 1.3rem;
}

.terminal-input-line {
    display: flex;
    align-items: center;
    margin-top: 4px;
}

.terminal-input-line .prompt {
    color: var(--accent-green);
    margin-right: 8px;
}

.cursor {
    color: var(--accent-green);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

@keyframes lineAppear {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: float 2s ease-in-out infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(45deg);
    opacity: 0.5;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* --- Section Common --- */
section {
    position: relative;
    z-index: 1;
    padding: var(--section-padding) 24px;
}

.section-container {
    max-width: 1100px;
    margin: 0 auto;
}

.section-heading {
    font-family: var(--font-mono);
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.heading-accent {
    color: var(--accent-electric);
    margin-right: 4px;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    max-width: 650px;
}

/* --- Scroll Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* --- About Section --- */
.about-grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 40px;
    align-items: start;
}

.about-image-wrapper {
    position: relative;
}

.about-image {
    border-radius: 12px;
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    position: relative;
    z-index: 1;
    filter: grayscale(10%);
    transition: filter 0.4s, transform 0.4s;
}

.about-image-wrapper:hover .about-image {
    filter: grayscale(0%);
    transform: translate(-4px, -4px);
}

.image-border {
    position: absolute;
    top: 12px;
    left: 12px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--accent-electric);
    border-radius: 12px;
    opacity: 0.3;
    transition: opacity 0.4s, transform 0.4s;
}

.about-image-wrapper:hover .image-border {
    opacity: 0.6;
    transform: translate(4px, 4px);
}

.about-lead {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.5;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 1.12rem;
}

.about-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.about-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--accent-cyan);
    transition: background 0.2s, border-color 0.2s;
}

.tag:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-cyan);
}

/* --- Skills Section --- */
.skills-categories {
    display: flex;
    flex-wrap: nowrap;
    gap: 12px;
    margin-bottom: 36px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.skills-categories::-webkit-scrollbar {
    display: none;
}

.skill-category {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.25s;
    white-space: nowrap;
    flex-shrink: 0;
}

.skill-category svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.skill-category:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--accent-cyan);
}

.skill-category.active {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1), 0 0 40px rgba(0, 255, 136, 0.05);
}

.skills-display {
    position: relative;
    min-height: 300px;
}

.skill-group {
    display: none;
    animation: fadeSlideIn 0.4s ease-out;
}

.skill-group.active {
    display: block;
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.skill-group-header {
    margin-bottom: 28px;
}

.skill-group-header h3 {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.skill-group-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.skill-nodes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.skill-node {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.skill-node::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-electric), var(--accent-cyan), var(--accent-violet));
    opacity: 0;
    transition: opacity 0.3s;
}

.skill-node:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-cyan);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3), 0 0 20px rgba(0, 212, 255, 0.05);
}

.skill-node:hover::before {
    opacity: 1;
}

.node-name {
    display: block;
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.node-context {
    font-family: var(--font-mono);
    font-size: 0.88rem;
    color: var(--accent-cyan);
    opacity: 0.7;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* Skill Tooltip */
.skill-tooltip {
    position: fixed;
    max-width: 360px;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--accent-cyan);
    border-radius: 8px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    pointer-events: none;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.2s, transform 0.2s;
    z-index: 2000;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.skill-tooltip.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Interests Section --- */
.interests-universe {
    display: flex;
    justify-content: center;
    padding: 20px 0;
}

.orbit-system {
    position: relative;
    width: 600px;
    height: 600px;
}

.orbit-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.3), transparent);
    border: 1px solid rgba(139, 92, 246, 0.4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.orbit-center span {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-violet);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.orbit-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    border: 1px dashed rgba(139, 92, 246, 0.12);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.ring-1 { width: 250px; height: 250px; }
.ring-2 { width: 400px; height: 400px; }
.ring-3 { width: 550px; height: 550px; }

.interest-node {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: transform 0.3s;
    z-index: 3;
}

.interest-node:hover {
    transform: scale(1.15);
}

.interest-icon {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: all 0.3s;
}

.interest-icon svg {
    width: 26px;
    height: 26px;
    color: var(--accent-violet);
    transition: color 0.3s;
}

.interest-node:hover .interest-icon {
    border-color: var(--accent-violet);
    background: rgba(139, 92, 246, 0.15);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.2);
}

.interest-label {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: color 0.3s;
}

.interest-node:hover .interest-label {
    color: var(--accent-violet);
}

.interest-detail {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    border: 1px solid var(--accent-violet);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s, transform 0.3s;
    transform: translateX(-50%) translateY(4px);
    z-index: 10;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.interest-node:hover .interest-detail {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Interest node positions - orbital placement */
.node-1 { top: 10%; left: 58%; }
.node-2 { top: 5%; left: 28%; }
.node-3 { top: 30%; left: 85%; }
.node-4 { top: 65%; left: 88%; }
.node-5 { top: 85%; left: 60%; }
.node-6 { top: 85%; left: 25%; }
.node-7 { top: 60%; left: 5%; }
.node-8 { top: 25%; left: 5%; }
.node-9 { top: 45%; left: 92%; }

/* Gentle floating animation for each node */
.interest-node {
    animation: gentleFloat 6s ease-in-out infinite;
}

.node-1 { animation-delay: 0s; }
.node-2 { animation-delay: -0.75s; }
.node-3 { animation-delay: -1.5s; }
.node-4 { animation-delay: -2.25s; }
.node-5 { animation-delay: -3s; }
.node-6 { animation-delay: -3.75s; }
.node-7 { animation-delay: -4.5s; }
.node-8 { animation-delay: -5.25s; }
.node-9 { animation-delay: -6s; }

@keyframes gentleFloat {
    0%, 100% { transform: translate(0, 0); }
    25% { transform: translate(3px, -5px); }
    50% { transform: translate(-2px, 3px); }
    75% { transform: translate(4px, 2px); }
}

.interest-node:hover {
    animation-play-state: paused;
    transform: scale(1.15) !important;
    z-index: 20;
}

/* --- Life Section --- */
.life-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.life-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px;
    transition: all 0.3s;
}

.life-card:hover {
    border-color: var(--accent-amber);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.life-card-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 16px;
}

.life-card-icon svg {
    width: 100%;
    height: 100%;
    color: var(--accent-amber);
}

.life-card h3 {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.metric-display {
    margin-bottom: 16px;
}

.metric-bar {
    width: 100%;
    height: 4px;
    background: var(--bg-secondary);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 6px;
}

.metric-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-electric), var(--accent-cyan));
    border-radius: 2px;
    width: 0;
    transition: width 1.5s ease-out;
}

.metric-label {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.life-card p {
    color: var(--text-secondary);
    font-size: 1.12rem;
    line-height: 1.7;
}

.life-card p a {
    color: var(--accent-amber);
    border-bottom: 1px dashed var(--accent-amber);
    transition: border-color 0.2s;
}

.life-card p a:hover {
    color: #fbbf24;
    border-color: #fbbf24;
}

/* --- About CTA --- */
.about-cta {
    color: var(--text-secondary) !important;
}

/* --- Reading Section --- */
.reading-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 36px;
}

.book-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
}

.book-card:hover {
    border-color: var(--accent-amber);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.book-cover-placeholder {
    width: 64px;
    height: 80px;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card-hover));
    border: 1px solid var(--border);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.book-cover-placeholder svg {
    width: 28px;
    height: 28px;
    color: var(--accent-amber);
    opacity: 0.6;
}

.book-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.book-title {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

.book-author {
    font-size: 1rem;
    color: var(--text-muted);
}

.book-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-amber);
    padding: 4px 10px;
    background: rgba(245, 158, 11, 0.1);
    border-radius: 4px;
    margin-top: 4px;
}

.reading-footer {
    text-align: center;
}

.goodreads-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--accent-amber) !important;
    padding: 12px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: all 0.25s;
}

.goodreads-link svg {
    width: 18px;
    height: 18px;
}

.goodreads-link .arrow-icon {
    width: 16px;
    height: 16px;
    transition: transform 0.25s;
}

.goodreads-link:hover {
    border-color: var(--accent-amber);
    background: rgba(245, 158, 11, 0.08);
    color: #fbbf24 !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.15);
}

.goodreads-link:hover .arrow-icon {
    transform: translate(2px, -2px);
}

/* --- Musings Section --- */
.musings-placeholder {
    max-width: 600px;
}

.terminal-mini {
    background: rgba(17, 24, 39, 0.9);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.terminal-mini .terminal-body {
    padding: 24px 28px;
    font-family: var(--font-mono);
    font-size: 1.05rem;
    line-height: 2;
}

.terminal-mini .terminal-body p {
    margin-bottom: 0;
}

.terminal-mini .prompt {
    color: var(--accent-green);
    margin-right: 8px;
    user-select: none;
}

.terminal-mini .muted {
    color: var(--text-muted);
}

.cursor-blink {
    color: var(--accent-green);
    animation: blink 1s step-end infinite;
}

/* --- Footer --- */
#footer {
    position: relative;
    z-index: 1;
    padding: 48px 24px;
    border-top: 1px solid var(--border);
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
}

.footer-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: all 0.25s;
}

.footer-links a svg {
    width: 20px;
    height: 20px;
}

.footer-links a:hover {
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.15);
}

.footer-text p {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.footer-note {
    font-family: var(--font-mono);
    font-size: 0.85rem !important;
    color: var(--text-muted);
    opacity: 0.6;
}

/* --- Responsive --- */
@media (max-width: 900px) {
    :root {
        --section-padding: 56px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-image-wrapper {
        max-width: 250px;
    }

    .skill-nodes {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .orbit-system {
        width: 100%;
        height: auto;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        justify-items: center;
    }

    .orbit-center,
    .orbit-ring {
        display: none;
    }

    .interest-node {
        position: static;
        animation: none;
    }

    .interest-node:hover {
        animation: none;
    }

    .interest-detail {
        position: static;
        transform: none;
        opacity: 0;
        max-height: 0;
        overflow: hidden;
        padding: 0;
        border: none;
        background: none;
        white-space: normal;
        text-align: center;
        pointer-events: auto;
        transition: opacity 0.3s, max-height 0.3s, padding 0.3s;
    }

    .interest-node:hover .interest-detail,
    .interest-node.touched .interest-detail {
        opacity: 1;
        max-height: 80px;
        padding: 6px 0 0 0;
        font-size: 0.75rem;
        color: var(--text-muted);
        box-shadow: none;
    }

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

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

@media (max-width: 640px) {
    :root {
        --section-padding: 48px;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 14, 23, 0.98);
        backdrop-filter: blur(12px);
        padding: 16px 24px;
        gap: 0;
        border-bottom: 1px solid var(--border);
    }

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

    .nav-links li a {
        display: block;
        padding: 12px 0;
        border-bottom: 1px solid var(--border);
    }

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

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.open span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .nav-toggle.open span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .section-heading {
        font-size: 1.6rem;
    }

    .terminal {
        max-width: 100%;
    }

    .terminal-body {
        padding: 18px;
        font-size: 0.9rem;
    }

    .skills-categories {
        flex-wrap: wrap;
        overflow-x: visible;
        gap: 8px;
    }

    .skill-category {
        padding: 10px 14px;
        font-size: 0.85rem;
        flex-shrink: 1;
        white-space: normal;
    }

    .skill-category svg {
        width: 16px;
        height: 16px;
    }

    .orbit-system {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .interest-icon {
        width: 44px;
        height: 44px;
    }

    .interest-icon svg {
        width: 20px;
        height: 20px;
    }

    .interest-label {
        font-size: 0.75rem;
    }

    .skill-tooltip {
        max-width: calc(100vw - 24px);
    }
}

/* --- Utility --- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}