/* ==========================================================================
   CodeSphere Design System & Main Styles
   Theme: Galactic Dark / Deep Space Geek
   ========================================================================== */

/* --- CSS Variables & Root tokens --- */
:root {
    /* Color Palette (HSL Tailored) */
    --bg-base: hsl(224, 71%, 4%);
    --bg-surface: hsl(222, 47%, 10%);
    --bg-surface-glass: hsla(222, 47%, 10%, 0.65);
    --border-glass: hsla(222, 40%, 30%, 0.3);
    --border-glass-focus: hsla(250, 84%, 67%, 0.5);
    
    --color-primary: hsl(250, 84%, 67%);      /* Neon Indigo */
    --color-primary-glow: hsla(250, 84%, 67%, 0.45);
    --color-secondary: hsl(322, 85%, 63%);    /* Cyber Magenta */
    --color-secondary-glow: hsla(322, 85%, 63%, 0.45);
    
    --color-accent-web: hsl(15, 95%, 60%);      /* HTML Red-Orange */
    --color-accent-python: hsl(207, 95%, 54%);   /* Python Blue */
    --color-accent-go: hsl(190, 90%, 50%);       /* Go Cyan */
    
    --text-primary: hsl(210, 40%, 98%);
    --text-secondary: hsl(215, 20%, 72%);
    --text-muted: hsl(217, 15%, 50%);
    
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 30px var(--color-primary-glow);
    
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-display: 'Outfit', var(--font-sans);
    --font-mono: 'Fira Code', monospace;
    
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-fast: all 0.15s ease-out;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-base);
    color: var(--text-primary);
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
    background: var(--border-glass);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* --- Typography --- */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.25;
}

p {
    font-size: 1rem;
    color: var(--text-secondary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

/* --- Background Glowing Blobs --- */
.glow-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    z-index: -1;
    pointer-events: none;
    animation: blob-move 20s infinite alternate ease-in-out;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: var(--color-primary);
    top: -100px;
    left: -100px;
}

.blob-2 {
    width: 600px;
    height: 600px;
    background: var(--color-secondary);
    top: 30%;
    right: -200px;
    animation-delay: -5s;
}

.blob-3 {
    width: 450px;
    height: 450px;
    background: var(--color-accent-go);
    bottom: 10%;
    left: -100px;
    animation-delay: -10s;
}

@keyframes blob-move {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(50px, 80px) scale(1.1); }
    100% { transform: translate(-30px, -50px) scale(0.9); }
}

/* --- Reuseable Buttons & Components --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.8rem;
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
}

.btn-sm {
    padding: 0.5rem 1.2rem;
    font-size: 0.875rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), hsl(265, 85%, 60%));
    color: #fff;
    box-shadow: 0 4px 14px rgba(108, 99, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(108, 99, 255, 0.5);
}

.btn-glow:hover {
    box-shadow: 0 0 25px var(--color-primary-glow);
}

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

.btn-secondary:hover {
    background: hsl(222, 47%, 14%);
    border-color: var(--text-secondary);
    transform: translateY(-2px);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    background: hsla(250, 84%, 67%, 0.12);
    border: 1px solid hsla(250, 84%, 67%, 0.25);
    color: hsl(250, 100%, 80%);
    font-size: 0.8rem;
    font-weight: 600;
    width: fit-content;
}

.gradient-text {
    background: linear-gradient(135deg, hsl(190, 90%, 60%), var(--color-primary) 50%, var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* --- Section Formatting --- */
section {
    padding: 7rem 1.5rem;
    position: relative;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4.5rem auto;
}

.section-badge {
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.8rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1.2rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* --- Navigation Bar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1.2rem 1.5rem;
    transition: var(--transition-smooth);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: var(--bg-surface-glass);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-glass);
    padding: 0.8rem 1.5rem;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 800;
    color: #fff;
}

.logo-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: #fff;
    box-shadow: 0 4px 10px var(--color-primary-glow);
}

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

.nav-links a {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a:hover,
.nav-links a.active {
    color: #fff;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-smooth);
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* --- Mobile Navigation Menu --- */
.mobile-nav {
    position: fixed;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--bg-surface);
    z-index: 99;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition-smooth);
    opacity: 0;
    visibility: hidden;
}

.mobile-nav.open {
    top: 0;
    opacity: 1;
    visibility: visible;
}

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

.mobile-links a {
    font-size: 1.5rem;
    font-family: var(--font-display);
    font-weight: 600;
}

/* --- Hero Section --- */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 8rem;
    background: radial-gradient(circle at 70% 30%, hsla(250, 84%, 67%, 0.05), transparent 40%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hero-title {
    font-size: 3.8rem;
    line-height: 1.15;
}

.hero-subtitle {
    font-size: 1.15rem;
    line-height: 1.7;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border-glass);
    padding-top: 2rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.stat-num {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, #fff, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* --- Hero Visual & Editor Window --- */
.hero-visual {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.hero-visual::before {
    content: '';
    position: absolute;
    top: 10%;
    left: 10%;
    right: 10%;
    bottom: 10%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    filter: blur(80px);
    opacity: 0.35;
    z-index: -1;
}

.editor-window {
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: var(--transition-smooth);
}

.editor-window:hover {
    border-color: var(--border-glass-focus);
    box-shadow: 0 20px 40px hsla(250, 84%, 67%, 0.15);
}

.editor-header {
    background: hsl(222, 47%, 7%);
    padding: 0.8rem 1.2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-glass);
}

.window-dots {
    display: flex;
    gap: 0.4rem;
}

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

.dot-red { background: hsl(0, 80%, 60%); }
.dot-yellow { background: hsl(40, 80%, 60%); }
.dot-green { background: hsl(120, 80%, 50%); }

.window-title {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.window-lang {
    font-size: 0.75rem;
    color: var(--color-primary);
    background: hsla(250, 84%, 67%, 0.15);
    padding: 0.1rem 0.5rem;
    border-radius: 4px;
    font-family: var(--font-mono);
}

.editor-body {
    padding: 1.5rem;
    display: flex;
    gap: 1.2rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    overflow-x: auto;
}

.line-numbers {
    display: flex;
    flex-direction: column;
    color: var(--text-muted);
    text-align: right;
    user-select: none;
}

.editor-body pre {
    color: hsl(210, 20%, 85%);
}

/* Code Highlighting Mock */
.keyword { color: hsl(300, 80%, 70%); }
.variable { color: hsl(210, 100%, 75%); }
.string { color: hsl(95, 75%, 70%); }
.function-name { color: hsl(45, 90%, 70%); }

.editor-footer {
    padding: 0.8rem 1.5rem;
    background: hsl(222, 47%, 7%);
    display: flex;
    justify-content: flex-end;
    border-top: 1px solid var(--border-glass);
}

.editor-btn {
    background: hsla(250, 84%, 67%, 0.2);
    color: hsl(250, 100%, 80%);
    border: 1px solid hsla(250, 84%, 67%, 0.4);
    padding: 0.4rem 1rem;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.85rem;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition-fast);
}

.editor-btn:hover {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 0 15px var(--color-primary-glow);
}

.output-window {
    background: hsl(222, 47%, 6%);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.output-header {
    background: hsl(222, 47%, 4%);
    padding: 0.6rem 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-glass);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.status-indicator {
    color: hsl(120, 80%, 45%);
}

.output-content {
    padding: 1.2rem;
    min-height: 80px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: hsl(120, 80%, 75%);
}

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

/* --- Tracks Section --- */
.tracks-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.track-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 2.2rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.track-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--color-primary);
    opacity: 0;
    transition: var(--transition-smooth);
}

.track-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-glass-focus);
    box-shadow: var(--shadow-lg);
}

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

/* Custom coloring per track */
.track-card:nth-child(1)::before { background: var(--color-accent-web); }
.track-card:nth-child(2)::before { background: var(--color-accent-python); }
.track-card:nth-child(3)::before { background: var(--color-accent-go); }

.track-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--shadow-sm);
}

.web-icon {
    background: hsla(15, 95%, 60%, 0.15);
    color: var(--color-accent-web);
}

.python-icon {
    background: hsla(207, 95%, 54%, 0.15);
    color: var(--color-accent-python);
}

.go-icon {
    background: hsla(190, 90%, 50%, 0.15);
    color: var(--color-accent-go);
}

.track-content {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    flex-grow: 1;
}

.track-tag {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-primary);
    background: hsla(250, 84%, 67%, 0.12);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    width: fit-content;
}

.track-title {
    font-size: 1.4rem;
    color: #fff;
}

.track-description {
    font-size: 0.9rem;
    line-height: 1.6;
}

.track-steps {
    list-style: none;
    margin-top: 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.track-steps li {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.track-steps li i {
    color: hsl(120, 70%, 50%);
    font-size: 0.8rem;
}

.track-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border-glass);
    padding-top: 1.2rem;
    margin-top: auto;
}

.track-duration {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.track-link {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.track-link:hover {
    color: #fff;
}

/* --- Interactive Live Playground Section --- */
.playground-wrapper {
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.playground-controls {
    background: hsl(222, 47%, 7%);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-glass);
    flex-wrap: wrap;
    gap: 1rem;
}

.lang-selector {
    display: flex;
    gap: 0.5rem;
}

.lang-tab {
    background: none;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 0.4rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.85rem;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.lang-tab:hover {
    color: #fff;
    background: hsla(222, 40%, 30%, 0.2);
}

.lang-tab.active {
    background: hsla(250, 84%, 67%, 0.15);
    color: var(--color-primary);
    border-color: hsla(250, 84%, 67%, 0.3);
}

.playground-actions {
    display: flex;
    gap: 0.8rem;
}

.playground-body {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    height: 480px;
}

.code-editor-box {
    display: flex;
    background: hsl(222, 47%, 8%);
    padding: 1.5rem;
    overflow: hidden;
    position: relative;
    border-right: 1px solid var(--border-glass);
}

.editor-line-numbers {
    display: flex;
    flex-direction: column;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    text-align: right;
    padding-right: 1rem;
    user-select: none;
    border-right: 1px solid hsla(222, 40%, 30%, 0.15);
}

.raw-code-input {
    width: 100%;
    height: 100%;
    background: none;
    border: none;
    resize: none;
    color: hsl(210, 20%, 90%);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    padding-left: 1rem;
    outline: none;
}

.console-output-box {
    background: hsl(222, 47%, 4%);
    display: flex;
    flex-direction: column;
}

.console-header {
    background: hsl(222, 47%, 6%);
    padding: 0.8rem 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-glass);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.clear-console {
    cursor: pointer;
    transition: var(--transition-fast);
}

.clear-console:hover {
    color: var(--color-secondary);
}

.console-body {
    flex-grow: 1;
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.output-line {
    border-left: 2px solid transparent;
    padding-left: 0.6rem;
}

.output-line.system {
    color: var(--text-muted);
}

.output-line.log {
    color: hsl(120, 80%, 75%);
    border-color: hsl(120, 80%, 50%);
}

.output-line.error {
    color: hsl(0, 85%, 75%);
    border-color: hsl(0, 85%, 50%);
}

/* --- Features Grid --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}

.feature-card {
    background: var(--bg-surface-glass);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    transition: var(--transition-smooth);
}

.feature-card:hover {
    border-color: var(--border-glass-focus);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 54px;
    height: 54px;
    border-radius: 12px;
    background: hsla(250, 84%, 67%, 0.15);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 10px rgba(108, 99, 255, 0.1);
}

.feature-title {
    font-size: 1.3rem;
    color: #fff;
}

.feature-content {
    font-size: 0.95rem;
    line-height: 1.7;
}

/* --- FAQ Section --- */
.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.faq-item {
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-question {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-family: var(--font-display);
    font-size: 1.05rem;
    user-select: none;
}

.faq-question i {
    color: var(--text-muted);
    transition: var(--transition-smooth);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
    background: hsl(222, 47%, 8%);
}

.faq-answer p {
    padding: 1.5rem;
    font-size: 0.95rem;
    border-top: 1px solid var(--border-glass);
}

/* Open states */
.faq-item.active {
    border-color: var(--border-glass-focus);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.faq-item.active .faq-answer {
    max-height: 300px; /* arbitrary height to slide down */
    transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
}

/* --- Footer --- */
.footer {
    background: hsl(222, 47%, 3%);
    border-top: 1px solid var(--border-glass);
    padding: 5rem 1.5rem 3rem 1.5rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.brand-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    max-width: 320px;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.social-links a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: var(--transition-smooth);
}

.social-links a:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px var(--color-primary-glow);
}

.footer-links-group {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.links-title {
    font-size: 1rem;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links-group ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-links-group a {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-links-group a:hover {
    color: var(--color-primary);
    padding-left: 4px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-glass);
    padding-top: 2rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    flex-wrap: wrap;
    gap: 1rem;
}

.icp-info a {
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition-fast);
}

.icp-info a:hover {
    color: var(--color-primary);
}

/* --- Responsive Adjustments --- */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-content {
        text-align: center;
        align-items: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .tracks-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .playground-body {
        grid-template-columns: 1fr;
        height: auto;
    }
    
    .code-editor-box {
        height: 300px;
        border-right: none;
        border-bottom: 1px solid var(--border-glass);
    }
    
    .console-output-box {
        height: 250px;
    }
}

@media (max-width: 768px) {
    section {
        padding: 5rem 1rem;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .nav-links, .nav-cta {
        display: none;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .tracks-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}