@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;700&family=Orbitron:wght@400;500;700;900&family=Rajdhani:wght@300;400;500;600;700&display=swap');

:root {
    --bg-dark: #050505;
    --bg-center: #1a1f2c;
    --neon-cyan: #06b6d4;
    --neon-green: #39FF14;
    --neon-blue: #00FFFF;
    --neon-purple: #BF00FF;
    --neon-pink: #FF00FF;
    --neon-rose: #f43f5e;
    --glass-bg: rgba(26, 31, 44, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);
    --sidebar-width-collapsed: 64px;
    --sidebar-width-expanded: 240px;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

body {
    font-family: 'Rajdhani', sans-serif;
    background: radial-gradient(ellipse at center, var(--bg-center) 0%, var(--bg-dark) 70%);
    color: #e2e8f0;
    position: relative;
    overflow-x: hidden;
}

/* Scanline overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
    pointer-events: none;
    z-index: 9999;
    animation: scanlines 8s linear infinite;
}

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

/* Grid background */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(6, 182, 212, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(6, 182, 212, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
}

#gameCanvas {
    touch-action: none;
}

.main-content {
    flex: 1;
    margin-left: 64px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: margin-left 0.3s;
    overflow-y: auto;
    overflow-x: hidden;
    min-height: 100vh;
}

#sidebar:hover ~ .main-content {
    margin-left: 240px;
}

@media (max-width: 768px) {
    .main-content {
        margin-left: 0;
        padding-bottom: 60px;
    }
    
    #sidebar {
        transform: translateX(-100%);
    }
    
    #sidebar.expanded {
        transform: translateX(0);
    }
}

a, button {
    cursor: pointer;
}

/* Hide elements using utility class */
.hidden {
    display: none !important;
}

/* ========== Typography ========== */
h1, h2, h3 {
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
}

/* ========== Mobile Menu Button ========== */
.menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: #64748b;
    padding: 8px;
    margin-right: 8px;
}

.menu-btn:hover {
    color: var(--neon-cyan);
}

@media (max-width: 768px) {
    .menu-btn {
        display: block;
    }
}

/* ========== Sidebar Styles ========== */
#sidebar {
    width: var(--sidebar-width-collapsed);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(5, 5, 5, 0.95);
    backdrop-filter: blur(20px);
    cursor: default;
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    z-index: 100;
    border-right: 1px solid rgba(6, 182, 212, 0.15);
    display: flex;
    flex-direction: column;
    padding: 24px 0;
    overflow: hidden;
}

#sidebar:hover {
    width: var(--sidebar-width-expanded);
}

.sidebar-logo {
    padding: 0 20px;
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 16px;
    cursor: pointer;
}

.sidebar-logo:hover .logo-icon {
    transform: scale(1.1);
    box-shadow: 0 0 25px var(--neon-cyan);
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 4px;
    background: linear-gradient(135deg, var(--neon-cyan), #0891b2);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.5);
    transition: all 0.3s;
    flex-shrink: 0;
    clip-path: polygon(10% 0%, 100% 0%, 90% 100%, 0% 100%);
}

.logo-icon svg {
    width: 20px;
    height: 20px;
    color: black;
}

.sidebar-logo .logo-text {
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    font-size: 16px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s;
    color: var(--neon-cyan);
    text-shadow: 0 0 10px var(--neon-cyan);
}

#sidebar:hover .logo-text {
    opacity: 1;
}

.sidebar-nav {
    flex: 1;
    padding: 0 12px;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-nav::-webkit-scrollbar {
    display: none;
}

.nav-category {
    margin-bottom: 32px;
}

.category-label {
    display: none;
    font-size: 10px;
    font-weight: 700;
    color: rgba(6, 182, 212, 0.6);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    padding: 0 16px;
    margin-bottom: 16px;
}

#sidebar:hover .category-label {
    display: block;
}

.nav-items {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* ========== Navigation Item ========== */
.nav-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    border-radius: 8px;
    transition: all 0.2s;
    cursor: pointer;
    position: relative;
    background: transparent;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--neon-cyan);
    border-radius: 0 2px 2px 0;
    transition: height 0.2s;
    box-shadow: 0 0 10px var(--neon-cyan);
}

.nav-item:hover {
    background: rgba(6, 182, 212, 0.1);
}

.nav-item:hover::before {
    height: 60%;
}

.nav-item:hover svg {
    color: var(--neon-cyan);
    filter: drop-shadow(0 0 8px var(--neon-cyan));
}

.nav-item:hover .nav-text {
    color: var(--neon-cyan);
    text-shadow: 0 0 10px var(--neon-cyan);
}

.nav-item.active {
    background: rgba(6, 182, 212, 0.15);
}

.nav-item.active::before {
    height: 80%;
}

.nav-item.active svg {
    color: var(--neon-cyan);
}

.nav-item.active .nav-text {
    color: var(--neon-cyan);
    text-shadow: 0 0 15px var(--neon-cyan);
}

.nav-item svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: #64748b;
    transition: all 0.2s;
}

.nav-text {
    font-family: 'Rajdhani', sans-serif;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    white-space: nowrap;
    opacity: 0;
    transition: all 0.3s;
    user-select: none;
    color: #94a3b8;
}

#sidebar:hover .nav-text {
    opacity: 1;
}

/* Sidebar bottom */
.sidebar-bottom {
    padding: 0 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* ========== Header ========== */
.app-header {
    width: 100%;
    padding: 16px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(180deg, rgba(5, 5, 5, 0.8) 0%, transparent 100%);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(10px);
}

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

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--neon-cyan);
    animation: pulse 2s infinite;
    box-shadow: 0 0 15px var(--neon-cyan);
}

@keyframes pulse {
    0%, 100% { 
        opacity: 1;
        box-shadow: 0 0 15px var(--neon-cyan);
    }
    50% { 
        opacity: 0.5;
        box-shadow: 0 0 5px var(--neon-cyan);
    }
}

.header-status {
    font-family: 'Rajdhani', sans-serif;
    font-size: 11px;
    letter-spacing: 0.25em;
    font-weight: 600;
    color: rgba(6, 182, 212, 0.7);
    text-transform: uppercase;
}

.system-time {
    font-family: 'Orbitron', sans-serif;
    font-size: 12px;
    font-weight: 400;
    color: rgba(148, 163, 184, 0.8);
    letter-spacing: 0.15em;
}

.header-right {
    width: 96px;
}

/* ========== Home Screen ========== */
#home-screen {
    flex: 1;
    width: 100%;
    max-width: 1152px;
    margin: 0 auto;
    padding: 48px 24px;
    overflow-y: auto;
}

.home-title {
    text-align: center;
    margin-bottom: 48px;
}

.home-title h1 {
    font-size: clamp(36px, 8vw, 72px);
    font-weight: 900;
    letter-spacing: 0.15em;
    color: white;
    margin: 0 0 12px 0;
    text-transform: uppercase;
    background: linear-gradient(135deg, #fff 0%, var(--neon-cyan) 50%, var(--neon-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    filter: drop-shadow(0 0 30px rgba(6, 182, 212, 0.5));
}

.home-title p {
    color: rgba(148, 163, 184, 0.7);
    font-family: 'Rajdhani', sans-serif;
    font-size: 12px;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    font-weight: 400;
}

/* ========== Game Grid ========== */
.game-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 24px;
}

@media (min-width: 640px) {
    .game-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .game-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ========== Cyber Card ========== */
.cyber-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 24px;
    border-radius: 4px;
    border: 1px solid var(--glass-border);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Beveled corners */
.cyber-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 50%);
    pointer-events: none;
}

/* Corner accents */
.cyber-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 20px;
    height: 20px;
    border-top: 2px solid var(--card-accent, var(--neon-cyan));
    border-left: 2px solid var(--card-accent, var(--neon-cyan));
    opacity: 0;
    transition: opacity 0.3s;
}

.cyber-card:hover {
    transform: translateY(-8px);
    background: rgba(26, 31, 44, 0.8);
    border-color: var(--card-accent, var(--neon-cyan));
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.4),
        0 0 30px var(--card-glow, rgba(6, 182, 212, 0.2));
}

.cyber-card:hover::after {
    opacity: 1;
}

.card-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--card-accent, rgba(6, 182, 212, 0.3));
    transition: all 0.3s;
    position: relative;
}

.cyber-card:hover .card-icon {
    transform: scale(1.1);
    border-color: var(--card-accent, var(--neon-cyan));
    box-shadow: 0 0 25px var(--card-glow, rgba(6, 182, 212, 0.4));
}

.card-icon svg {
    width: 28px;
    height: 28px;
    transition: transform 0.3s;
}

.cyber-card:hover .card-icon svg {
    transform: scale(1.15);
}

.card-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
    transition: all 0.3s;
    color: #e2e8f0;
}

.card-highscore {
    font-family: 'Rajdhani', sans-serif;
    font-size: 11px;
    font-weight: 500;
    color: rgba(148, 163, 184, 0.6);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    padding: 4px 12px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 2px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.home-footer {
    margin-top: 80px;
    padding: 32px 0;
    border-top: 1px solid rgba(6, 182, 212, 0.1);
    text-align: center;
}

.home-footer p {
    font-family: 'Rajdhani', sans-serif;
    font-size: 11px;
    color: rgba(148, 163, 184, 0.4);
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

/* ========== Dashboard Screen ========== */
#dashboard-screen {
    display: none;
    flex: 1;
    width: 100%;
    max-width: 1024px;
    margin: 0 auto;
    padding: 48px 24px;
    overflow-y: auto;
}

#dashboard-screen.active {
    display: block;
}

.dashboard-title {
    text-align: center;
    margin-bottom: 48px;
}

.dashboard-title h2 {
    font-size: clamp(28px, 6vw, 48px);
    font-weight: 700;
    letter-spacing: 0.1em;
    color: white;
    margin: 0;
    text-transform: uppercase;
    background: linear-gradient(135deg, #fff 0%, var(--neon-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stats-overview {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 40px;
}

@media (min-width: 768px) {
    .stats-overview {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    padding: 20px;
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    position: relative;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, transparent 50%, rgba(6, 182, 212, 0.1) 50%);
}

.stat-card.reset-card {
    border-color: rgba(244, 63, 94, 0.2);
}

.stat-label {
    font-family: 'Rajdhani', sans-serif;
    font-size: 11px;
    color: rgba(148, 163, 184, 0.7);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.1em;
}

.stat-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 28px;
    font-weight: 700;
    color: white;
    margin-top: 8px;
    text-shadow: 0 0 20px rgba(6, 182, 212, 0.5);
}

.reset-btn {
    width: 100%;
    height: 100%;
    background: transparent;
    border: none;
    color: var(--neon-rose);
    font-family: 'Rajdhani', sans-serif;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.2s;
}

.reset-btn:hover {
    background: rgba(244, 63, 94, 0.1);
    text-shadow: 0 0 15px var(--neon-rose);
}

.game-stats-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 16px;
    margin-top: 48px;
}

@media (min-width: 768px) {
    .game-stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ========== Guide Screen ========== */
#guide-screen {
    display: none;
    flex: 1;
    width: 100%;
    max-width: 896px;
    margin: 0 auto;
    padding: 48px 24px;
    overflow-y: auto;
}

#guide-screen.active {
    display: block;
}

.guide-header {
    margin-bottom: 48px;
}

.guide-header h2 {
    font-size: clamp(28px, 6vw, 48px);
    font-weight: 700;
    letter-spacing: 0.1em;
    color: white;
    margin: 0 0 12px 0;
    text-transform: uppercase;
    background: linear-gradient(135deg, #fff 0%, var(--neon-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.guide-header p {
    color: rgba(148, 163, 184, 0.6);
    font-family: 'Rajdhani', sans-serif;
    font-size: 12px;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    font-weight: 400;
}

.guide-content {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.guide-category {
    display: flex;
    flex-direction: column;
}

.guide-category-label {
    font-family: 'Rajdhani', sans-serif;
    font-size: 11px;
    font-weight: 700;
    color: var(--neon-cyan);
    text-transform: uppercase;
    letter-spacing: 0.25em;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(6, 182, 212, 0.2);
}

.guide-items {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 24px;
}

@media (min-width: 768px) {
    .guide-items {
        grid-template-columns: repeat(2, 1fr);
    }
}

.guide-item {
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.guide-item h3 {
    font-family: 'Orbitron', sans-serif;
    font-weight: 600;
    font-size: 14px;
    margin: 0 0 10px 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--neon-cyan);
    text-shadow: 0 0 10px rgba(6, 182, 212, 0.5);
}

.guide-item p {
    font-family: 'Rajdhani', sans-serif;
    color: rgba(148, 163, 184, 0.8);
    font-size: 14px;
    line-height: 1.7;
    margin: 0;
}

/* ========== About Screen ========== */
#about-screen {
    display: none;
    flex: 1;
    width: 100%;
    max-width: 672px;
    margin: 0 auto;
    padding: 80px 24px;
    overflow-y: auto;
}

#about-screen.active {
    display: block;
}

.about-header {
    text-align: center;
    margin-bottom: 64px;
}

.about-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 32px;
    border-radius: 4px;
    background: linear-gradient(135deg, var(--neon-cyan), #0891b2);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 40px rgba(6, 182, 212, 0.4);
    clip-path: polygon(15% 0%, 100% 0%, 85% 100%, 0% 100%);
}

.about-logo svg {
    width: 40px;
    height: 40px;
    color: black;
}

.about-header h2 {
    font-size: clamp(28px, 6vw, 48px);
    font-weight: 700;
    color: white;
    letter-spacing: 0.1em;
    margin: 0;
    text-transform: uppercase;
    background: linear-gradient(135deg, #fff 0%, var(--neon-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-version {
    font-family: 'Rajdhani', sans-serif;
    color: var(--neon-cyan);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.15em;
    margin-top: 16px;
    text-transform: uppercase;
    text-shadow: 0 0 15px rgba(6, 182, 212, 0.5);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.about-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    padding: 28px;
    border-radius: 4px;
    text-align: center;
}

.about-card h3 {
    font-family: 'Orbitron', sans-serif;
    font-weight: 600;
    font-size: 12px;
    letter-spacing: 0.15em;
    margin: 0 0 16px 0;
    color: white;
    text-transform: uppercase;
}

.about-card p {
    font-family: 'Rajdhani', sans-serif;
    color: rgba(148, 163, 184, 0.8);
    font-size: 15px;
    line-height: 1.7;
    margin: 0;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 16px;
}

@media (min-width: 768px) {
    .about-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

.about-features .about-card {
    text-align: left;
}

.about-features .about-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.about-features .about-card li {
    font-family: 'Rajdhani', sans-serif;
    color: rgba(148, 163, 184, 0.8);
    font-size: 13px;
    line-height: 1.9;
    padding-left: 20px;
    position: relative;
}

.about-features .about-card li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--neon-cyan);
}

.about-footer {
    text-align: center;
    padding: 40px 0;
}

.about-footer p {
    font-family: 'Rajdhani', sans-serif;
    font-size: 11px;
    color: rgba(148, 163, 184, 0.4);
    letter-spacing: 0.4em;
    text-transform: uppercase;
}

/* ========== Game Container ========== */
#game-container {
    display: none;
    flex: 1;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

#game-container.active {
    display: flex;
}

.game-header {
    width: 100%;
    max-width: 896px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding: 0 8px;
}

.pause-btn {
    font-family: 'Rajdhani', sans-serif;
    color: #64748b;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.15em;
    border: 1px solid rgba(100, 116, 139, 0.3);
    padding: 8px 16px;
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.3);
    transition: all 0.2s;
    text-transform: uppercase;
}

.pause-btn:hover {
    color: var(--neon-cyan);
    border-color: var(--neon-cyan);
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
}

.game-info {
    text-align: right;
}

.game-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 10px;
    letter-spacing: 0.2em;
    color: rgba(107, 114, 128, 0.8);
    font-weight: 500;
    font-style: italic;
}

.current-score {
    font-family: 'Orbitron', sans-serif;
    font-size: 36px;
    font-weight: 700;
    color: white;
    line-height: 1;
    margin-top: 4px;
    text-shadow: 0 0 30px var(--neon-cyan);
}

.game-canvas-wrapper {
    position: relative;
    background-color: black;
    border-radius: 4px;
    border: 1px solid rgba(6, 182, 212, 0.3);
    box-shadow: 
        0 0 80px rgba(0, 0, 0, 0.9),
        0 0 30px rgba(6, 182, 212, 0.1);
    overflow: hidden;
}

#gameCanvas {
    display: block;
    image-rendering: auto;
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

#overlay {
    position: absolute;
    inset: 0;
    background: rgba(5, 5, 5, 0.9);
    backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    z-index: 10;
    padding: 40px;
    text-align: center;
}

.overlay-content {
    width: 100%;
}

.overlay-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(32px, 8vw, 48px);
    font-weight: 700;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: white;
}

.overlay-title.paused {
    color: var(--neon-cyan);
    text-shadow: 0 0 30px var(--neon-cyan);
}

.overlay-subtitle {
    font-family: 'Rajdhani', sans-serif;
    color: rgba(148, 163, 184, 0.7);
    font-size: 14px;
    margin-bottom: 32px;
    letter-spacing: 0.1em;
}

.overlay-btn {
    font-family: 'Orbitron', sans-serif;
    background: linear-gradient(135deg, var(--neon-cyan), #0891b2);
    color: black;
    border: none;
    padding: 14px 48px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    transition: all 0.3s;
    cursor: pointer;
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
}

.overlay-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(6, 182, 212, 0.6);
}

.overlay-btn.pause-resume {
    margin-top: 32px;
}

.controls-hint {
    margin-top: 24px;
    font-family: 'Rajdhani', sans-serif;
    color: rgba(71, 85, 105, 0.6);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.25em;
}

/* ========== Scrollbar ========== */
.no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.no-scrollbar::-webkit-scrollbar {
    display: none;
}

/* Scrollbar for main content */
.main-content::-webkit-scrollbar {
    width: 6px;
}

.main-content::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
}

.main-content::-webkit-scrollbar-thumb {
    background: rgba(6, 182, 212, 0.3);
    border-radius: 3px;
}

.main-content::-webkit-scrollbar-thumb:hover {
    background: rgba(6, 182, 212, 0.5);
}

/* ========== Mobile Controls ========== */
.mobile-controls {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 100;
    padding: 16px 24px;
    background: rgba(5, 5, 5, 0.95);
    border-radius: 20px;
    border: 2px solid rgba(6, 182, 212, 0.5);
    backdrop-filter: blur(15px);
    box-shadow: 0 0 30px rgba(6, 182, 212, 0.3);
}

.mobile-controls.hidden {
    display: none;
}

.control-row {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.control-btn {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    border: 2px solid rgba(6, 182, 212, 0.6);
    background: rgba(6, 182, 212, 0.15);
    color: var(--neon-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    font-size: 24px;
    font-weight: bold;
}

.control-btn:active, .control-btn.pressed {
    background: rgba(6, 182, 212, 0.4);
    border-color: var(--neon-cyan);
    box-shadow: 0 0 25px rgba(6, 182, 212, 0.7);
    transform: scale(0.92);
}

.control-btn svg {
    width: 28px;
    height: 28px;
}

.control-btn-rot {
    width: 80px;
    font-size: 12px;
}

.piano-controls {
    margin-top: 8px;
    gap: 8px;
}

.piano-key {
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    font-size: 20px;
    width: 56px;
    height: 56px;
    border-color: rgba(6, 182, 212, 0.6);
}

.piano-key[data-key="0"] { border-color: rgba(34, 197, 94, 0.6); color: #22c55e; }
.piano-key[data-key="1"] { border-color: rgba(59, 130, 246, 0.6); color: #3b82f6; }
.piano-key[data-key="2"] { border-color: rgba(251, 191, 36, 0.6); color: #fbbf24; }
.piano-key[data-key="3"] { border-color: rgba(168, 85, 247, 0.6); color: #a855f7; }

.piano-key:active, .piano-key.pressed {
    background: rgba(255, 255, 255, 0.15);
}

@media (min-width: 769px) {
    .mobile-controls {
        display: none !important;
    }
}