:root {
    /* Professional, readable color palette */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #334155;
    --bg-elevated: #475569;

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Accent colors */
    --accent-primary: #f59e0b;
    --accent-secondary: #10b981;
    --accent-tertiary: #6366f1;
    --accent-highlight: #fbbf24;

    /* Dev/code colors */
    --code-bg: #1e293b;
    --code-border: #334155;
    --code-text: #a5d6ff;
    --syntax-keyword: #ff7b72;
    --syntax-string: #a5d6ff;
    --syntax-function: #d2a8ff;
    --syntax-variable: #ffa657;
    --syntax-comment: #8b949e;
    --syntax-number: #79c0ff;
    --syntax-class: #7ee787;

    /* Terminal colors */
    --terminal-bg: #0d1117;
    --terminal-text: #7ee787;
    --terminal-prompt: #58a6ff;

    /* Functional colors */
    --success: #22c55e;
    --warning: #f59e0b;
    --info: #3b82f6;
    --border: #334155;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
}

/* Light mode theme */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #e2e8f0;
    --bg-elevated: #cbd5e1;

    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #475569;

    --accent-primary: #d97706;
    --accent-secondary: #059669;
    --accent-tertiary: #4f46e5;
    --accent-highlight: #f59e0b;

    --code-bg: #f1f5f9;
    --code-border: #e2e8f0;
    --code-text: #0369a1;
    --syntax-keyword: #be185d;
    --syntax-string: #0369a1;
    --syntax-function: #7c3aed;
    --syntax-variable: #c2410c;
    --syntax-comment: #64748b;
    --syntax-number: #0284c7;
    --syntax-class: #15803d;

    --terminal-bg: #1e293b;
    --terminal-text: #7ee787;
    --terminal-prompt: #58a6ff;

    --success: #16a34a;
    --warning: #d97706;
    --info: #2563eb;
    --border: #cbd5e1;
}

/* Light mode specific overrides */
[data-theme="light"] .nav {
    background: rgba(255, 255, 255, 0.95);
}

[data-theme="light"] .terminal {
    background: var(--terminal-bg);
}

[data-theme="light"] .terminal-input-line {
    background: rgba(255, 255, 255, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: var(--space-md) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-brand span {
    color: var(--accent-primary);
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-primary);
}

/* Mobile hamburger menu */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1100;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
    transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile navigation menu */
.mobile-nav {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    /* use theme-aware background so mobile nav matches light/dark */
    background: var(--bg-secondary);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--border);
    z-index: 999;
    padding: var(--space-md) 0;
}

.mobile-nav.active {
    display: block;
}

.mobile-nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
}

.mobile-nav a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    padding: var(--space-md) var(--space-xl);
    transition: var(--transition-fast);
    border-left: 3px solid transparent;
}

.mobile-nav a:hover,
.mobile-nav a.active {
    color: var(--accent-primary);
    /* subtle accent-tinted background that works on both themes */
    background: rgba(245, 158, 11, 0.08);
    border-left: 3px solid var(--accent-primary);
}

/* Main container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* Hero Section */
.hero {
    padding: calc(var(--space-4xl) + 60px) 0 var(--space-4xl);
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-text h1 {
    font-size: 3.2rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-lg);
}

.hero-text h1 .highlight {
    color: var(--accent-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 600px;
}

.hero-meta {
    display: flex;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.meta-item i {
    color: var(--accent-secondary);
    width: 20px;
    height: 20px;
}

/* Availability indicator (prominent) */
.availability {
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    gap: var(--space-sm);
    background: linear-gradient(180deg, rgba(34, 197, 94, 0.08), rgba(34, 197, 94, 0.04));
    border: 1px solid rgba(34, 197, 94, 0.12);
    color: var(--text-primary);
    padding: 6px 10px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: 0 6px 18px rgba(2, 6, 23, 0.35);
    margin: 20px 0 48px 0;
}

/* Responsive: reduce spacing and size on narrower viewports */
@media (max-width: 600px) {
    .availability {
        margin: 10px 0 28px 0;
        font-size: 0.85rem;
        padding: 4px 8px;
        box-shadow: 0 4px 12px rgba(2, 6, 23, 0.25);
    }

    .availability-dot {
        width: 8px;
        height: 8px;
    }
}

.availability-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 8px rgba(34, 197, 94, 0.45);
    flex: 0 0 auto;
}

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

.hero-cta {
    display: flex;
    gap: var(--space-md);
}

.btn {
    padding: var(--space-sm) var(--space-lg);
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

/* Profile image */
.hero-image {
    position: relative;
}

.profile-wrapper {
    position: relative;
    width: 320px;
    height: 320px;
    margin: 0 auto;
    overflow: visible;
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
    border: 3px solid var(--border);
    filter: grayscale(10%);
    transition: var(--transition-normal);
}

.profile-img:hover {
    filter: grayscale(0%);
    border-color: var(--accent-primary);
}

.profile-badge {
    position: absolute;
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--code-text);
    z-index: 10;
}

.profile-badge.top {
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
}

.profile-badge.bottom {
    bottom: -10px;
    right: 20px;
}

/* Stats bar */
.stats-bar {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: var(--space-xl) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: var(--space-xs);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Section styling */
section {
    padding: var(--space-4xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-label {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
}

.philosophy-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
    cursor: pointer;
    display: inline-block;
}

.philosophy-link:hover {
    color: var(--accent-highlight);
}

/* Interactive Terminal */
.terminal {
    background: var(--terminal-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    margin: var(--space-xl) 0;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Extra spacing below terminal to separate from following content */
.interactive-bio {
    margin-bottom: var(--space-3xl);
}

@media (max-width: 768px) {
    .interactive-bio {
        margin-bottom: var(--space-2xl);
    }
}

.terminal-header {
    background: var(--bg-card);
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.terminal-dots {
    display: flex;
    gap: 6px;
}

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

.terminal-dot.red {
    background: #ff5f56;
}

.terminal-dot.yellow {
    background: #ffbd2e;
}

.terminal-dot.green {
    background: #27c93f;
}

.terminal-title {
    flex: 1;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.terminal-body {
    padding: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.6;
    min-height: 250px;
    max-height: 350px;
    overflow-y: auto;
}

.terminal-line {
    margin-bottom: var(--space-xs);
}

.terminal-prompt {
    color: var(--terminal-prompt);
}

.terminal-command {
    color: #ffffff;
}

.terminal-output {
    color: var(--terminal-text);
    padding-left: var(--space-md);
    white-space: pre-wrap;
}

.terminal-input-line {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

.terminal-input {
    flex: 1;
    background: transparent;
    border: none;
    color: #ffffff;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    outline: none;
    caret-color: var(--terminal-text);
}

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

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

.terminal-hint {
    text-align: center;
    font-size: 0.9rem;
    color: var(--accent-primary);
    margin-top: var(--space-md);
    font-weight: 500;
    padding: var(--space-md);
    background: var(--bg-card);
    border-radius: 6px;
    border-left: 3px solid var(--accent-secondary);
}

/* Writing Philosophy */
.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.philosophy-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: var(--space-xl);
    transition: var(--transition-normal);
}

.philosophy-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.philosophy-icon {
    width: 48px;
    height: 48px;
    color: var(--accent-primary);
    margin-bottom: var(--space-md);
}

.philosophy-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.philosophy-text {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Interactive Style Guide */
.style-guide {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    margin: var(--space-xl) 0;
}

.style-guide-header {
    background: var(--bg-card);
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.style-guide-title {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--syntax-function);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.style-guide-tabs {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
    padding: 0 var(--space-xs);
}

.style-guide-tab {
    padding: calc(var(--space-sm) / 2) var(--space-lg);
    background: linear-gradient(180deg, var(--bg-elevated), var(--bg-card));
    border: 1px solid var(--border);
    border-radius: 10px;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: transform 160ms ease, box-shadow 160ms ease, color var(--transition-fast);
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.style-guide-tab:hover,
.style-guide-tab:focus {
    color: var(--text-primary);
    border-color: var(--accent-highlight);
    transform: translateY(-2px);
    outline: none;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}

.style-guide-tab.active {
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-highlight));
    color: var(--bg-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
    transform: translateY(-2px);
}

/* Colors tab swatch + pulse (attention cue) */
.style-guide-tab[data-tab="colors"] {
    position: relative;
    padding-right: 2.25rem;
}

.style-guide-tab[data-tab="colors"] .tab-swatch {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
    background: var(--accent-primary);
    transition: transform 180ms ease, box-shadow 180ms ease;
    opacity: 0.98;
}

@keyframes swatchPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.18);
    }

    50% {
        box-shadow: 0 0 0 8px rgba(245, 158, 11, 0.06);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.00);
    }
}

.style-guide-tab[data-tab="colors"].pulse .tab-swatch {
    animation: swatchPulse 1.6s ease 0s 3;
}

@media (prefers-reduced-motion: reduce) {
    .style-guide-tab[data-tab="colors"].pulse .tab-swatch {
        animation: none;
    }
}

.style-guide-content {
    padding: var(--space-lg);
}

.style-guide-section {
    display: none;
}

.style-guide-section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* Collapsible Sidebar Styles */
.sidebar-toggle {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 999;
    background: var(--accent-primary);
    border: 2px solid var(--accent-highlight);
    border-right: none;
    border-radius: 12px 0 0 12px;
    padding: var(--space-md) var(--space-md);
    min-height: 150px;
    cursor: pointer;
    color: #ffffff;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    transition: var(--transition-normal);
    writing-mode: vertical-rl;
    text-orientation: mixed;
    box-shadow: -4px 0 20px rgba(245, 158, 11, 0.3);
    animation: pulseGlow 3s ease-in-out infinite;
}

@keyframes pulseGlow {

    0%,
    100% {
        box-shadow: -4px 0 20px rgba(245, 158, 11, 0.3);
    }

    50% {
        box-shadow: -6px 0 30px rgba(245, 158, 11, 0.5);
    }
}

.sidebar-toggle:hover {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
    transform: translateY(-50%) translateX(-4px);
    box-shadow: -8px 0 30px rgba(245, 158, 11, 0.5);
}

.sidebar-toggle i {
    width: 20px;
    height: 20px;
}

.style-guide-sidebar {
    position: fixed;
    right: -420px;
    top: 0;
    bottom: 0;
    width: 400px;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    z-index: 1001;
    transition: right 0.3s ease-out;
    overflow-y: auto;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
}

.style-guide-sidebar.open {
    right: 0;
}

.style-guide-sidebar .style-guide {
    background: transparent;
    border: none;
    border-radius: 0;
    margin: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.style-guide-sidebar .style-guide-header {
    background: var(--bg-card);
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-md);
}

.style-guide-sidebar .style-guide-title {
    justify-content: space-between;
}

.style-guide-sidebar .style-guide-tabs {
    flex-wrap: wrap;
}

.style-guide-sidebar .style-guide-content {
    flex: 1;
    overflow-y: auto;
}

.sidebar-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-xs);
    transition: var(--transition-fast);
}

.sidebar-close:hover {
    color: var(--text-primary);
}

.sidebar-close i {
    width: 20px;
    height: 20px;
}

.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.sidebar-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.dev-guide-reference {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: var(--space-md);
    margin-top: var(--space-lg);
}

.dev-guide-reference h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: var(--space-sm);
    font-family: var(--font-mono);
}

.dev-guide-reference p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Mini Style Guide */
.mini-style-guide {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    /* match the top spacing used inside .style-rule */
    margin-top: var(--space-md);
}

.style-rule {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: var(--space-md);
    border-left: 3px solid var(--accent-secondary);
}

.style-rule-header {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-secondary);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.style-example {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.style-dont {
    color: var(--syntax-keyword);
    font-size: 0.85rem;
    text-decoration: line-through;
    opacity: 0.7;
}

.style-do {
    color: var(--syntax-class);
    font-size: 0.85rem;
    font-weight: 500;
}

.style-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.style-label.dont {
    color: var(--syntax-keyword);
}

.style-label.do {
    color: var(--syntax-class);
}

/* Theme Toggle Switch */
.theme-toggle-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.theme-toggle-label {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-primary);
    font-weight: 600;
    margin-bottom: var(--space-md);
    display: block;
}

.theme-switch {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.theme-option {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.theme-option i {
    width: 18px;
    height: 18px;
}

.switch {
    position: relative;
    width: 56px;
    height: 28px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--bg-elevated);
    border: 2px solid var(--border);
    border-radius: 28px;
    transition: var(--transition-normal);
}

.slider::before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 2px;
    bottom: 2px;
    background: var(--accent-primary);
    border-radius: 50%;
    transition: var(--transition-normal);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

input:checked+.slider {
    background: var(--accent-tertiary);
    border-color: var(--accent-tertiary);
}

input:checked+.slider::before {
    transform: translateX(28px);
    background: #ffffff;
}

input:focus+.slider {
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.3);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.color-palette {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-md);
}

.color-swatch {
    background: var(--bg-card);
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border);
    /* restored: use the smaller swatch padding so appearance matches previous layout */
    padding: var(--space-sm);
    transition: var(--transition-fast);
    cursor: pointer;
    position: relative;
}

.color-swatch:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.color-swatch.selected {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.3);
}

.color-swatch.selected::after {
    content: '✓';
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--accent-primary);
    color: #fff;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: bold;
}

.color-swatch-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: var(--space-md);
    text-align: center;
}

.color-preview {
    height: 50px;
}

.color-info {
    padding: var(--space-sm);
}

.color-name {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.color-value {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
}

.typography-samples {
    display: grid;
    gap: var(--space-lg);
}

.typography-sample {
    background: var(--bg-card);
    padding: var(--space-md);
    border-radius: 6px;
}

.typography-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-secondary);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.syntax-demo {
    background: var(--terminal-bg);
    padding: var(--space-md);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
}

.syntax-line {
    display: block;
}

.keyword {
    color: var(--syntax-keyword);
}

.string {
    color: var(--syntax-string);
}

.function {
    color: var(--syntax-function);
}

.variable {
    color: var(--syntax-variable);
}

.comment {
    color: var(--syntax-comment);
    font-style: italic;
}

.number {
    color: var(--syntax-number);
}

.class-name {
    color: var(--syntax-class);
}

/* Core Expertise */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.expertise-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: var(--space-xl);
    display: flex;
    gap: var(--space-lg);
    transition: var(--transition-normal);
}

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

.expertise-number {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-tertiary);
    opacity: 0.5;
    flex-shrink: 0;
}

.expertise-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.expertise-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.expertise-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.tag {
    background: var(--bg-card);
    padding: 2px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Project Cards - File Tab Style */
.samples-section {
    background: var(--bg-secondary);
}

.samples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-lg);
}

.project-filter-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    align-items: center;
}

.project-filter-label {
    font-weight: 600;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.project-count {
    margin-left: auto;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    font-family: var(--font-mono);
}

@media (max-width: 700px) {
    .project-count {
        margin-left: 0;
        width: 100%;
        text-align: left;
        font-size: 0.9rem;
        margin-top: var(--space-sm);
    }
}

.filter-btn {
    padding: 6px 14px;
    border-radius: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
}

.sample-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition-normal);
    position: relative;
}

.sample-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.sample-card-tabs {
    background: var(--bg-card);
    padding: 0 var(--space-md);
    display: flex;
    align-items: flex-end;
    gap: 2px;
    border-bottom: 1px solid var(--border);
}

.sample-tab {
    background: var(--bg-elevated);
    padding: var(--space-xs) var(--space-md);
    border-radius: 6px 6px 0 0;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-bottom: none;
    margin-bottom: -1px;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.sample-tab.active {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-bottom: 1px solid var(--bg-primary);
}

.sample-tab-icon {
    width: 12px;
    height: 12px;
    color: var(--syntax-variable);
}

.sample-card-header {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--border);
    font-family: var(--font-mono);
}

.sample-type-comment {
    font-size: 0.8rem;
    color: var(--syntax-comment);
    font-style: italic;
}

.sample-body {
    padding: var(--space-lg);
}

.sample-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.sample-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.sample-outcomes {
    margin-bottom: var(--space-md);
    background: var(--bg-secondary);
    padding: var(--space-sm) var(--space-md);
    border-radius: 4px;
    border-left: 3px solid var(--accent-primary);
}

.sample-outcomes h4 {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: var(--space-xs);
    font-family: var(--font-mono);
}

.sample-outcomes p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.sample-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.sample-link:hover {
    color: var(--accent-highlight);
}

.sample-link i {
    width: 16px;
    height: 16px;
}

/* Project Card Styles */
.project-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: var(--space-lg);
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.project-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.project-card-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.project-card-type {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.project-card-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.project-card-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

.project-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-top: var(--space-sm);
}

.project-tag {
    display: inline-block;
    background: var(--bg-card);
    color: var(--text-muted);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 500;
}

/* Project Modal Styles */
.project-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--space-lg);
}

.project-modal-overlay.active {
    display: flex;
}

.project-modal {
    background: var(--bg-secondary);
    border-radius: 12px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    border: 1px solid var(--border);
}

.project-modal-close {
    position: sticky;
    top: 0;
    right: 0;
    background: var(--bg-card);
    border: none;
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: var(--space-md);
    transition: var(--transition-fast);
    float: right;
    z-index: 2001;
}

.project-modal-close:hover {
    background: var(--bg-elevated);
    color: var(--accent-primary);
}

.project-modal-close i {
    width: 20px;
    height: 20px;
}

.project-modal-body {
    padding: var(--space-lg);
}

.project-detail-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.project-detail-header {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.project-detail-type {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.project-detail-title {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.project-title-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 1.2rem;
    transition: var(--transition-fast);
}

.project-title-link:hover {
    color: var(--accent-highlight);
}

.project-detail-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.project-detail-description-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.project-detail-description-section.has-image {
    flex-direction: row;
    gap: var(--space-xl);
    align-items: flex-start;
}

.project-detail-thumbnail {
    flex-shrink: 0;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    border: 1px solid var(--border);
    min-width: 200px;
    width: 200px;
}

.project-thumbnail-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.project-thumbnail-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-detail-thumbnail:hover .project-thumbnail-overlay {
    opacity: 1;
}

.project-thumbnail-overlay i {
    color: #ffffff;
    font-size: 1.5rem;
}

.project-detail-description {
    flex: 1;
}

.project-detail-description p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 0;
}

.project-detail-skills {
    background: var(--bg-card);
    padding: var(--space-lg);
    border-radius: 8px;
    border-left: 3px solid var(--accent-secondary);
}

.project-detail-skills h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-secondary);
    margin: 0 0 var(--space-md) 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-detail-skills ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.project-detail-skills li {
    color: var(--text-secondary);
    font-size: 0.95rem;
    position: relative;
    padding-left: var(--space-lg);
}

.project-detail-skills li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: 600;
}

.project-detail-results {
    background: var(--bg-card);
    padding: var(--space-lg);
    border-radius: 8px;
    border-left: 3px solid var(--accent-primary);
}

.project-detail-results h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin: 0 0 var(--space-md) 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-detail-results p {
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.8;
}

.project-detail-link {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
}

.fullscreen-image-viewer {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2100;
}

.fullscreen-image-viewer.active {
    display: flex;
}

.fullscreen-image-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
}

.fullscreen-image-container {
    position: relative;
    z-index: 2101;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.fullscreen-image {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
}

.fullscreen-image-close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #ffffff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    z-index: 2102;
}

.fullscreen-image-close:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.fullscreen-image-close i {
    width: 24px;
    height: 24px;
}


/* Experience Timeline */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary));
    border-radius: 3px;
}

.timeline-item {
    position: relative;
    padding-left: var(--space-3xl);
    padding-bottom: var(--space-3xl);
}

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

.timeline-marker {
    position: absolute;
    left: -8px;
    top: 0;
    width: 20px;
    height: 20px;
    background: var(--bg-primary);
    border: 3px solid var(--accent-primary);
    border-radius: 50%;
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--accent-primary);
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.timeline-role {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.timeline-company {
    font-size: 1.1rem;
    color: var(--accent-secondary);
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.timeline-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.timeline-achievements {
    list-style: none;
}

.timeline-achievements li {
    position: relative;
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

.timeline-achievements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 600;
}

/* Workstreams within a role */
.timeline-workstream {
    margin-top: var(--space-lg);
    padding-left: var(--space-lg);
    border-left: 2px solid var(--border);
}

.timeline-workstream + .timeline-workstream {
    margin-top: var(--space-xl);
}

.workstream-role {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.workstream-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

/* Skills Section */
.skills-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}

.skill-group {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: var(--space-xl);
}

.skill-group-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.skill-group-title i {
    color: var(--accent-primary);
    width: 24px;
    height: 24px;
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.skill-item {
    background: var(--bg-card);
    padding: var(--space-xs) var(--space-md);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.skill-item:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

/* Education */
.education-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.education-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: var(--space-xl);
    text-align: center;
    transition: var(--transition-normal);
    position: relative;
}

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

.education-degree {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-tertiary);
    margin-bottom: var(--space-sm);
}

.education-field {
    font-size: 1rem;
    margin-bottom: var(--space-sm);
}

.education-school {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Compact badge for education status */
.edu-badge {
    position: absolute;
    top: 10px;
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    background: linear-gradient(180deg, rgba(245, 158, 11, 0.08), rgba(245, 158, 11, 0.04));
    border: 1px solid rgba(245, 158, 11, 0.12);
    color: var(--accent-primary);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 4px 8px;
    border-radius: 999px;
    font-weight: 700;
    line-height: 1;
    white-space: nowrap;
    z-index: 10;
}

@media (max-width: 900px) {
    .education-grid {
        grid-template-columns: repeat(1, 1fr);
    }

    .edu-badge {
        top: 8px;
        left: 50%;
        right: auto;
        transform: translateX(-50%);
        font-size: 0.68rem;
        padding: 3px 6px;
    }
}

/* Contact Section */
.contact-section {
    background: var(--bg-secondary);
}

.contact-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.contact-intro {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.contact-methods {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition-normal);
    padding: var(--space-sm) var(--space-md);
    border-radius: 6px;
    background: var(--bg-card);
    border: 1px solid var(--border);
}

.contact-method:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

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

.contact-method span {
    font-weight: 500;
}

/* Footer */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    padding: var(--space-xl) 0;
}

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

.footer-left {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-right {
    display: flex;
    gap: var(--space-lg);
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.footer-link:hover {
    color: var(--accent-primary);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin: 0 auto var(--space-xl);
    }

    .hero-meta {
        justify-content: center;
    }

    .hero-cta {
        justify-content: center;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

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

    .style-guide-header {
        flex-direction: column;
        gap: var(--space-md);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-text h1 {
        font-size: 2.2rem;
    }

    .profile-wrapper {
        width: 250px;
        height: 250px;
    }

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

    .contact-methods {
        flex-direction: column;
        align-items: center;
        gap: var(--space-md);
    }

    .footer-content {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}