/* ============================================
   CSS Custom Properties (Theme System)
   ============================================ */
:root {
    /* Accent colors - switched by Option 1 */
    --accent: #00d4aa;
    --accent-dim: #00d4aa33;
    --accent-hover: #00e6bb;

    /* Font - switched by Option 3 */
    --font-mono: 'JetBrains Mono', monospace;
    --font-body: 'JetBrains Mono', monospace;

    /* Transition speed for theme toggle */
    --transition-speed: 0.4s;

    /* Spacing */
    --section-padding: 6rem 2rem;
    --container-width: 1100px;
}

/* Dark theme (default) */
[data-theme="dark"] {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.7);
    --bg-card-border: rgba(255, 255, 255, 0.08);
    --bg-card-hover: rgba(17, 24, 39, 0.9);
    --text-primary: #f0f0f0;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --nav-bg: transparent;
    --header-blur: blur(20px);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.5);
    --canvas-particle-color: var(--accent);
    --canvas-line-color: var(--accent-dim);
    --terminal-bg: #1a1a2e;
    --terminal-header-bg: #16213e;
}

/* Light theme */
[data-theme="light"] {
    --bg-primary: #d8dfe8;
    --bg-secondary: #c9d2de;
    --bg-card: rgba(235, 240, 248, 0.7);
    --bg-card-border: rgba(0, 0, 0, 0.12);
    --bg-card-hover: rgba(245, 248, 252, 0.85);
    --text-primary: #1a2332;
    --text-secondary: #374a60;
    --text-muted: #6b7f96;
    --nav-bg: transparent;
    --header-blur: blur(20px);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.08);
    --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.12);
    --canvas-particle-color: var(--accent);
    --canvas-line-color: var(--accent-dim);
    --terminal-bg: #1e293b;
    --terminal-header-bg: #0f172a;
}


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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
}

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

/* ============================================
   Canvas Background
   ============================================ */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.6;
    transition: opacity 0.5s ease;
}

[data-theme="light"] #bg-canvas {
    opacity: 0.9;
}


/* ============================================
   Navigation
   ============================================ */
#site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    transition: background var(--transition-speed) ease, backdrop-filter var(--transition-speed) ease;
}

/* Nav style: minimal (default) */
#site-header.nav-minimal {
    background: transparent;
}

#site-header.nav-minimal.scrolled {
    background: var(--bg-card);
    backdrop-filter: var(--header-blur);
    -webkit-backdrop-filter: var(--header-blur);
}

/* Nav style: glass */
#site-header.nav-glass {
    background: var(--bg-card);
    backdrop-filter: var(--header-blur);
    -webkit-backdrop-filter: var(--header-blur);
    border-bottom: 1px solid var(--bg-card-border);
}

/* Nav style: solid */
#site-header.nav-solid {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--bg-card-border);
}

nav {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent);
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: opacity 0.2s;
}

.logo:hover {
    opacity: 0.8;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    transition: color 0.2s;
    position: relative;
}

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

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

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

#theme-toggle {
    background: none;
    border: 2px solid var(--bg-card-border);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

#theme-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: rotate(30deg);
}

.theme-icon {
    transition: transform 0.5s ease;
    display: inline-block;
}

[data-theme="light"] .theme-icon {
    transform: rotate(180deg);
}

/* Mobile menu button */
#mobile-menu {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

#mobile-menu span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

#mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 99;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

#mobile-nav.open {
    display: flex;
}

#mobile-nav a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 500;
}


/* ============================================
   Hero Section
   ============================================ */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 2rem 4rem;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: var(--container-width);
    width: 100%;
}

/* Layout: Centered */
.hero-content[data-layout="centered"] {
    text-align: center;
}

.hero-content[data-layout="centered"] .hero-graphic {
    display: none;
}

.hero-content[data-layout="centered"] .hero-cta {
    justify-content: center;
}

/* Layout: Left */
.hero-content[data-layout="left"] {
    text-align: left;
}

.hero-content[data-layout="left"] .hero-graphic {
    display: none;
}

.hero-content[data-layout="left"] .hero-cta {
    justify-content: flex-start;
}

/* Layout: Split */
.hero-content[data-layout="split"] {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    text-align: left;
}

.hero-content[data-layout="split"] .hero-graphic {
    display: block;
}

.hero-content[data-layout="split"] .hero-cta {
    justify-content: flex-start;
}

.hero-content h1 {
    font-family: var(--font-mono);
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.tagline {
    font-size: clamp(1rem, 2vw, 1.3rem);
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-weight: 300;
    max-width: 600px;
}

.hero-content[data-layout="centered"] .tagline {
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent);
    color: #000;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--accent-dim);
}

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

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}


/* ============================================
   Terminal Animation (for split hero)
   ============================================ */
.terminal-window {
    background: var(--terminal-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
    font-family: var(--font-mono);
}

.terminal-header {
    background: var(--terminal-header-bg);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: default;
}

.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-dot {
    cursor: pointer;
    transition: transform 0.15s ease, filter 0.15s ease;
}
.terminal-dot:hover {
    transform: scale(1.3);
    filter: brightness(1.3);
}

.terminal-body.crash {
    animation: crash-flash 0.15s ease 2;
}
@keyframes crash-flash {
    50% { background: rgba(255, 50, 50, 0.15); }
}

.terminal-title {
    color: #6b7280;
    font-size: 0.75rem;
    margin-left: 0.5rem;
}

.terminal-body {
    padding: 1.5rem;
    font-size: 0.85rem;
    color: #e2e8f0;
    height: 300px;
    max-height: 300px;
    overflow-y: auto;
    overflow-x: hidden;
    transition: height 0.6s cubic-bezier(0.4, 0, 0.2, 1), padding 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.terminal-body.collapsed {
    height: 0;
    padding: 0 1.5rem;
    overflow: hidden;
}

.terminal-line {
    margin-bottom: 0.3rem;
    white-space: pre-wrap;
    word-break: break-all;
}

.prompt {
    color: var(--accent);
    margin-right: 0.5rem;
}

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

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

.terminal-output {
    color: #9ca3af;
}

.terminal-success {
    color: #10b981;
}

.terminal-warning {
    color: #f59e0b;
}


/* ============================================
   Sections (shared)
   ============================================ */
section {
    padding: var(--section-padding);
    position: relative;
    z-index: 1;
}

.section-title {
    font-family: var(--font-mono);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent);
    margin: 0.75rem auto 0;
    border-radius: 2px;
}


/* ============================================
   Services Grid
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    max-width: var(--container-width);
    margin: 0 auto;
}

/* Card styles - switched by Option 8 */
.card {
    padding: 2rem;
    border-radius: 12px;
    transition: all 0.3s ease;
}

/* 8A: Glass cards (default) */
.card-style-glass .card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--bg-card-border);
}

.card-style-glass .card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--accent-dim);
}

/* 8B: Bordered */
.card-style-bordered .card {
    background: transparent;
    border: 2px solid var(--bg-card-border);
}

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

/* 8C: Flat */
.card-style-flat .card {
    background: var(--bg-secondary);
    border: none;
}

.card-style-flat .card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
}

/* 8D: Elevated */
.card-style-elevated .card {
    background: var(--bg-card);
    border: none;
    box-shadow: var(--shadow-card);
}

.card-style-elevated .card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-6px);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.card h3 {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--accent);
}

.card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}


/* ============================================
   About Section
   ============================================ */
.about-content {
    max-width: var(--container-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.stats-row {
    display: flex;
    gap: 2.5rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.3rem;
}

.about-projects h3 {
    font-family: var(--font-mono);
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.project-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 320px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-dim) transparent;
    padding-right: 0.25rem;
}

.project-links::-webkit-scrollbar {
    width: 4px;
}

.project-links::-webkit-scrollbar-track {
    background: transparent;
}

.project-links::-webkit-scrollbar-thumb {
    background: var(--accent-dim);
    border-radius: 2px;
}

.project-link {
    display: block;
    padding: 1rem;
    border: 1px solid var(--bg-card-border);
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.project-link-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.25rem;
}

.project-link strong {
    display: block;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.project-link span {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.star-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-family: var(--font-mono);
}

.star-badge svg {
    color: var(--accent);
    opacity: 0.8;
}

.star-count {
    font-size: 0.75rem;
}

.bounty-profiles {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.bounty-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--bg-card-border);
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s ease;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

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

.bounty-link .bounty-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

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


/* ============================================
   Research Section
   ============================================ */
.research-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.research-content > p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.research-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.topic-tag {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--accent-dim);
    color: var(--accent);
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--accent-dim);
    transition: all 0.2s;
}

.topic-tag:hover {
    background: var(--accent);
    color: #000;
}


/* ============================================
   Contact Section
   ============================================ */
.contact-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.contact-content > p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.contact-methods {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 2rem;
    border: 1px solid var(--bg-card-border);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: all 0.3s ease;
    min-width: 120px;
}

.contact-card:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 4px 20px var(--accent-dim);
}

.contact-icon {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}


/* ============================================
   Footer
   ============================================ */
footer {
    position: relative;
    z-index: 1;
    padding: 3rem 2rem;
    border-top: 1px solid var(--bg-card-border);
    text-align: center;
}

.footer-content p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.footer-reg {
    margin-top: 0.25rem;
    font-size: 0.7rem !important;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 2rem;
}

.footer-logo {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.footer-nav {
    display: flex;
    gap: 1.5rem;
}

.footer-nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    transition: color 0.2s;
}

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

.footer-copy {
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--bg-card-border);
    padding-top: 1rem;
}

.footer-terminal {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.about-bounty h3 {
    font-family: var(--font-mono);
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}


/* ============================================
   Options Panel (draft review only)
   ============================================ */
#options-panel {
    position: fixed;
    top: 4.5rem;
    right: 1rem;
    width: 320px;
    max-height: calc(100vh - 6rem);
    overflow-y: auto;
    background: var(--bg-secondary);
    border: 1px solid var(--bg-card-border);
    border-radius: 12px;
    z-index: 200;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
    font-size: 0.75rem;
    transition: background var(--transition-speed) ease;
}

#options-panel.collapsed .options-body {
    display: none;
}

.options-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--bg-card-border);
    position: sticky;
    top: 0;
    background: var(--bg-secondary);
    z-index: 1;
}

.options-header h3 {
    font-size: 0.85rem;
    font-weight: 600;
}

.options-header button {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0.25rem;
}

.options-body {
    padding: 0.75rem 1rem;
}

.option-group {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--bg-card-border);
}

.option-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.option-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--accent);
    font-size: 0.8rem;
}

.option-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.color-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
}

.color-btn.active,
.color-btn:hover {
    border-color: var(--text-primary);
    transform: scale(1.15);
}

.option-labels {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 0.75rem;
    margin-top: 0.3rem;
    font-size: 0.65rem;
    color: var(--text-muted);
}

.circuit-btn, .title-btn, .secbg-btn, .scroll-btn, .contact-btn, .footer-btn, .speed-btn {
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    border: 1px solid var(--bg-card-border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.7rem;
    font-family: var(--font-body);
    transition: all 0.2s;
}

.circuit-btn.active, .title-btn.active, .secbg-btn.active,
.scroll-btn.active, .contact-btn.active, .footer-btn.active, .speed-btn.active {
    background: var(--accent);
    color: #000;
    border-color: var(--accent);
}

.circuit-btn:hover, .title-btn:hover, .secbg-btn:hover,
.scroll-btn:hover, .contact-btn:hover, .footer-btn:hover, .speed-btn:hover {
    border-color: var(--accent);
}

.tagline-previews {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    margin-top: 0.4rem;
    color: var(--text-muted);
    font-size: 0.65rem;
}

/* ============================================
   Glitch Text Effect (subtle)
   ============================================ */
.glitch-text {
    position: relative;
}

@keyframes glitch-1 {
    0%, 100% { clip-path: inset(0 0 100% 0); }
    20% { clip-path: inset(20% 0 60% 0); }
    40% { clip-path: inset(40% 0 30% 0); }
    60% { clip-path: inset(70% 0 10% 0); }
    80% { clip-path: inset(10% 0 80% 0); }
}

.glitch-text:hover::before {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    color: var(--accent);
    animation: glitch-1 0.3s linear;
    clip-path: inset(0 0 100% 0);
}


/* ============================================
   Hero Title Effects
   ============================================ */

/* Effect: Gradient shimmer — seamless loop */
.title-shimmer .hero-content h1 {
    background: linear-gradient(
        120deg,
        var(--text-primary) 0%,
        var(--text-primary) 42%,
        var(--accent) 50%,
        var(--text-primary) 58%,
        var(--text-primary) 100%
    );
    background-size: 250% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    0% { background-position: 100% 0; }
    100% { background-position: 0% 0; }
}

/* Effect: Static (no effect, just text) */
.title-static .hero-content h1 {
    color: var(--text-primary);
}

/* Effect: Accent colored */
.title-accent .hero-content h1 {
    color: var(--accent);
}


/* ============================================
   Section Background Variants
   ============================================ */

/* Alternating tint on even sections */
.sections-alternating section:nth-child(even) {
    background: var(--bg-card);
}

/* Subtle card tint on sections */
.sections-cards section:nth-child(even) .card,
.sections-cards section:nth-child(even) .contact-card,
.sections-cards section:nth-child(even) .project-link,
.sections-cards section:nth-child(even) .bounty-link {
    border-color: var(--accent-dim);
}


/* ============================================
   Section reveal animation (class-based)
   ============================================ */
section.section-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   Additional footer styles
   ============================================ */

/* Gradient bar footer */
.footer-gradient-bar {
    background: linear-gradient(90deg, var(--accent-dim), var(--accent), var(--accent-dim));
    height: 2px;
    margin-bottom: 1.5rem;
}

/* Columns footer */
.footer-columns {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    align-items: start;
    text-align: left;
    margin-bottom: 1.5rem;
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
}

.footer-columns .footer-col-center {
    text-align: center;
}

.footer-columns .footer-col-right {
    text-align: right;
}

.footer-columns a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    transition: color 0.2s;
}

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

/* ASCII art footer */
.footer-ascii {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    line-height: 1.2;
    color: var(--accent-dim);
    white-space: pre;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
    user-select: none;
}

/* Command prompt footer */
.footer-prompt-line {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.footer-prompt-line .prompt-user {
    color: var(--accent);
}

.footer-prompt-line .prompt-path {
    color: var(--text-muted);
}

/* Minimal line footer */
.footer-line-accent {
    width: 40px;
    height: 2px;
    background: var(--accent);
    margin: 0 auto 1.5rem;
    border-radius: 1px;
}

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

    #mobile-menu {
        display: flex;
    }

    .hero-content[data-layout="split"] {
        grid-template-columns: 1fr;
    }

    .hero-content[data-layout="split"] .hero-graphic {
        display: none;
    }

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

    .stats-row {
        justify-content: center;
    }

    #options-panel {
        width: calc(100% - 2rem);
        right: 1rem;
        left: 1rem;
        max-height: 50vh;
    }

    :root {
        --section-padding: 4rem 1.5rem;
    }
}

/* ============================================
   About Extras (togglable via options)
   ============================================ */
.about-extras {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.location-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    border: 1px solid var(--bg-card-border);
    border-radius: 999px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.skill-tag {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    transition: all 0.2s;
}

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

.about-extras h3 {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    margin-bottom: 0;
    color: var(--text-primary);
}

.availability-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 500;
}

.availability-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.availability-badge.available {
    color: #10b981;
    border: 1px solid #10b98133;
}

.availability-badge.available::before {
    background: #10b981;
    box-shadow: 0 0 6px #10b981;
}

/* ============================================
   Checkbox toggle style for option panels
   ============================================ */
.toggle-btn {
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    border: 1px solid var(--bg-card-border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.7rem;
    font-family: var(--font-body);
    transition: all 0.2s;
}

.toggle-btn.on {
    background: var(--accent);
    color: #000;
    border-color: var(--accent);
}

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

@media (max-width: 680px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {

    .contact-methods {
        flex-direction: column;
        align-items: center;
    }

    .stats-row {
        gap: 1.5rem;
    }
}