/* ============================================
   DRIVE MAD - Main Stylesheet
   ============================================ */

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

:root {
    --color-bg-dark: #0d0520;
    --color-bg-mid: #1a0a2e;
    --color-bg-light: #2d1b4e;
    --color-primary: #ff6b35;
    --color-primary-dark: #cc4a1a;
    --color-secondary: #7c3aed;
    --color-accent: #06d6a0;
    --color-accent2: #ffd166;
    --color-danger: #ef233c;
    --color-text: #ffffff;
    --color-text-dim: #a0a0c0;
    --color-text-dark: #6060a0;
    --color-border: rgba(255,255,255,0.1);
    --color-glass: rgba(255,255,255,0.05);
    --color-glass-hover: rgba(255,255,255,0.1);
    --shadow-glow-primary: 0 0 20px rgba(255,107,53,0.4);
    --shadow-glow-accent: 0 0 20px rgba(6,214,160,0.4);
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --font-main: 'Segoe UI', 'Arial', sans-serif;
    --transition-fast: 0.15s ease;
    --transition-mid: 0.3s ease;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--color-bg-dark);
    color: var(--color-text);
    font-family: var(--font-main);
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    user-select: none;
    touch-action: none;
}

/* ============================================
   SCREENS
   ============================================ */

.screen {
    position: fixed;
    inset: 0;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10;
    overflow: hidden;
}

.screen.active {
    display: flex;
}

/* ============================================
   LOADING SCREEN
   ============================================ */

#loading-screen {
    background: linear-gradient(135deg, #0d0520 0%, #1a0a2e 50%, #0d1a3e 100%);
    z-index: 1000;
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    padding: 40px;
}

.loading-logo {
    display: flex;
    gap: 12px;
    align-items: baseline;
}

.logo-drive {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    color: #ffffff;
    letter-spacing: 4px;
    text-shadow: 0 0 30px rgba(255,255,255,0.3);
}

.logo-mad {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    color: var(--color-primary);
    letter-spacing: 4px;
    text-shadow: var(--shadow-glow-primary);
}

.loading-subtitle {
    font-size: clamp(0.7rem, 2vw, 1rem);
    color: var(--color-text-dim);
    letter-spacing: 6px;
    text-transform: uppercase;
}

.loading-bar-container {
    width: min(300px, 80vw);
    height: 6px;
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
    overflow: hidden;
}

.loading-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-secondary), var(--color-primary));
    border-radius: 3px;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px var(--color-primary);
}

.loading-text {
    font-size: 0.85rem;
    color: var(--color-text-dim);
    letter-spacing: 3px;
    animation: pulse 1.5s ease-in-out infinite;
}

/* ============================================
   MAIN MENU
   ============================================ */

#main-menu {
    background: linear-gradient(135deg, #0d0520 0%, #1a0a2e 60%, #0d1a3e 100%);
}

.menu-bg-animation {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(124,58,237,0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(255,107,53,0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, rgba(6,214,160,0.08) 0%, transparent 50%);
    pointer-events: none;
}

.menu-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
    padding: 20px;
    width: 100%;
    max-width: 480px;
}

.game-logo {
    text-align: center;
}

.logo-vehicle-icon {
    font-size: clamp(2rem, 6vw, 3.5rem);
    margin-bottom: 8px;
    animation: float 3s ease-in-out infinite;
}

.game-title {
    display: flex;
    gap: 12px;
    justify-content: center;
    align-items: baseline;
    line-height: 1;
}

.title-drive {
    font-size: clamp(2.5rem, 10vw, 5rem);
    font-weight: 900;
    color: #ffffff;
    letter-spacing: 4px;
    text-shadow: 0 2px 20px rgba(255,255,255,0.2);
}

.title-mad {
    font-size: clamp(2.5rem, 10vw, 5rem);
    font-weight: 900;
    color: var(--color-primary);
    letter-spacing: 4px;
    text-shadow: var(--shadow-glow-primary);
}

.game-subtitle {
    font-size: clamp(0.65rem, 2vw, 0.9rem);
    color: var(--color-text-dim);
    letter-spacing: 5px;
    margin-top: 6px;
}

.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
}

.menu-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: clamp(0.9rem, 2.5vw, 1.1rem);
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    width: 100%;
}

.menu-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.1);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.menu-btn:hover::before,
.menu-btn:focus::before {
    opacity: 1;
}

.menu-btn:active {
    transform: scale(0.97);
}

.primary-btn {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    box-shadow: 0 4px 20px rgba(255,107,53,0.3);
}

.secondary-btn {
    background: var(--color-glass);
    color: white;
    border: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
}

.secondary-btn:hover {
    border-color: rgba(255,255,255,0.3);
}

.btn-icon {
    font-size: 1.2em;
}

.btn-text {
    flex: 1;
    text-align: left;
}

.btn-sub {
    font-size: 0.75em;
    opacity: 0.7;
    font-weight: 400;
    letter-spacing: 1px;
}

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

.best-score-display {
    font-size: 0.8rem;
    color: var(--color-text-dim);
    letter-spacing: 2px;
}

/* ============================================
   SCREEN HEADER (shared)
   ============================================ */

.screen-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 16px 20px;
    background: rgba(0,0,0,0.3);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.back-btn {
    background: var(--color-glass);
    border: 1px solid var(--color-border);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    transition: all var(--transition-fast);
}

.back-btn:hover {
    background: var(--color-glass-hover);
    border-color: rgba(255,255,255,0.3);
}

.screen-title {
    font-size: clamp(1rem, 3vw, 1.4rem);
    font-weight: 800;
    letter-spacing: 3px;
    color: var(--color-accent2);
}

.header-spacer {
    width: 80px;
}

/* ============================================
   LEVEL SELECT
   ============================================ */

#level-select {
    background: linear-gradient(135deg, #0d0520 0%, #1a0a2e 100%);
    justify-content: flex-start;
}

.level-grid-container {
    flex: 1;
    overflow-y: auto;
    width: 100%;
    padding: 20px;
    -webkit-overflow-scrolling: touch;
}

.level-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px;
    max-width: 800px;
    margin: 0 auto;
}

.level-card {
    aspect-ratio: 1;
    border-radius: var(--border-radius);
    border: 2px solid var(--color-border);
    background: var(--color-glass);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    gap: 4px;
}

.level-card:hover:not(.locked) {
    border-color: var(--color-primary);
    background: rgba(255,107,53,0.1);
    transform: scale(1.05);
}

.level-card.completed {
    border-color: var(--color-accent);
    background: rgba(6,214,160,0.08);
}

.level-card.current {
    border-color: var(--color-accent2);
    background: rgba(255,209,102,0.1);
    box-shadow: 0 0 15px rgba(255,209,102,0.2);
}

.level-card.locked {
    opacity: 0.4;
    cursor: not-allowed;
}

.level-number {
    font-size: clamp(1rem, 3vw, 1.4rem);
    font-weight: 800;
    color: white;
}

.level-status {
    font-size: 1rem;
}

.level-stars {
    font-size: 0.6rem;
    color: var(--color-accent2);
    letter-spacing: 1px;
}

.level-best-time {
    font-size: 0.55rem;
    color: var(--color-text-dim);
    letter-spacing: 0.5px;
}

/* ============================================
   HOW TO PLAY
   ============================================ */

#how-to-play {
    background: linear-gradient(135deg, #0d0520 0%, #1a0a2e 100%);
    justify-content: flex-start;
}

.htp-content {
    flex: 1;
    overflow-y: auto;
    width: 100%;
    max-width: 700px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    -webkit-overflow-scrolling: touch;
}

.htp-section {
    background: var(--color-glass);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 16px;
}

.htp-section-title {
    font-size: clamp(0.85rem, 2.5vw, 1rem);
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--color-accent2);
    margin-bottom: 10px;
}

.htp-text {
    font-size: clamp(0.8rem, 2vw, 0.95rem);
    color: var(--color-text-dim);
    line-height: 1.6;
}

.htp-demo {
    background: var(--color-glass);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 16px;
    text-align: center;
}

#htp-canvas {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 8px;
    background: rgba(0,0,0,0.3);
}

.htp-demo-labels {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    margin-top: 8px;
    letter-spacing: 1px;
}

.htp-controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.htp-controls-desktop,
.htp-controls-mobile {
    background: var(--color-glass);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 16px;
}

.control-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: clamp(0.75rem, 2vw, 0.85rem);
    color: var(--color-text-dim);
}

kbd {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 0.8em;
    font-family: monospace;
    color: white;
    white-space: nowrap;
}

.mobile-control-demo {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin: 12px 0;
}

.mobile-btn-demo {
    background: rgba(255,107,53,0.2);
    border: 2px solid var(--color-primary);
    border-radius: 10px;
    padding: 10px 16px;
    font-size: 0.8rem;
    font-weight: 700;
    color: white;
    letter-spacing: 1px;
}

.htp-tips {
    background: var(--color-glass);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 16px;
}

.tips-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tips-list li {
    font-size: clamp(0.78rem, 2vw, 0.9rem);
    color: var(--color-text-dim);
    padding-left: 20px;
    position: relative;
    line-height: 1.5;
}

.tips-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* ============================================
   SETTINGS
   ============================================ */

#settings-screen {
    background: linear-gradient(135deg, #0d0520 0%, #1a0a2e 100%);
    justify-content: flex-start;
}

.settings-content {
    flex: 1;
    overflow-y: auto;
    width: 100%;
    max-width: 500px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    -webkit-overflow-scrolling: touch;
}

.setting-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-glass);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 16px 20px;
}

.setting-label {
    font-size: clamp(0.85rem, 2.5vw, 1rem);
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--color-text);
}

.toggle-btn {
    background: rgba(255,255,255,0.1);
    border: 2px solid rgba(255,255,255,0.2);
    border-radius: 20px;
    color: white;
    padding: 6px 18px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-width: 60px;
}

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

.quality-selector {
    display: flex;
    gap: 6px;
}

.quality-btn {
    background: rgba(255,255,255,0.1);
    border: 2px solid rgba(255,255,255,0.2);
    border-radius: 8px;
    color: white;
    padding: 6px 12px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.quality-btn.active {
    background: var(--color-secondary);
    border-color: var(--color-secondary);
}

.setting-divider {
    height: 1px;
    background: var(--color-border);
    margin: 8px 0;
}

.danger-btn {
    background: rgba(239,35,60,0.15);
    border: 2px solid rgba(239,35,60,0.4);
    border-radius: var(--border-radius);
    color: #ff6b7a;
    padding: 14px 24px;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
}

.danger-btn:hover {
    background: rgba(239,35,60,0.25);
    border-color: rgba(239,35,60,0.7);
}

/* ============================================
   DIALOG
   ============================================ */

.dialog-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.dialog-box {
    background: linear-gradient(135deg, #1a0a2e, #2d1b4e);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 30px;
    max-width: 360px;
    width: 90%;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.dialog-title {
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--color-danger);
    margin-bottom: 12px;
}

.dialog-text {
    font-size: 0.9rem;
    color: var(--color-text-dim);
    line-height: 1.6;
    margin-bottom: 24px;
}

.dialog-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.dialog-btn {
    padding: 12px 24px;
    border-radius: 10px;
    border: none;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex: 1;
}

.cancel-btn {
    background: var(--color-glass);
    border: 1px solid var(--color-border);
    color: white;
}

.confirm-btn {
    background: var(--color-danger);
    color: white;
}

.confirm-btn:hover {
    background: #c81a2e;
}

/* ============================================
   OVERLAY SCREENS (Pause, Complete, Crash)
   ============================================ */

.overlay-screen {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.75);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(6px);
}

.overlay-content {
    background: linear-gradient(135deg, #1a0a2e, #2d1b4e);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: clamp(20px, 5vw, 40px);
    max-width: 420px;
    width: 90%;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
    max-height: 90vh;
    overflow-y: auto;
}

.overlay-title {
    font-size: clamp(1.5rem, 5vw, 2.2rem);
    font-weight: 900;
    letter-spacing: 3px;
    color: white;
    margin-bottom: 16px;
}

.overlay-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

.overlay-btn {
    padding: 13px 20px;
    border-radius: var(--border-radius);
    border: none;
    font-size: clamp(0.85rem, 2.5vw, 1rem);
    font-weight: 700;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
}

.overlay-btn:active {
    transform: scale(0.97);
}

/* ============================================
   LEVEL COMPLETE
   ============================================ */

.complete-header {
    margin-bottom: 16px;
}

.complete-flag {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

.complete-subtitle {
    font-size: 1rem;
    color: var(--color-accent);
    letter-spacing: 2px;
    font-weight: 600;
}

.complete-stats {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 16px 0;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    background: var(--color-glass);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 12px 16px;
    min-width: 80px;
}

.stat-label {
    font-size: 0.65rem;
    color: var(--color-text-dim);
    letter-spacing: 2px;
    font-weight: 600;
}

.stat-value {
    font-size: clamp(1rem, 3vw, 1.4rem);
    font-weight: 800;
    color: white;
}

.star-rating {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin: 12px 0;
}

.star {
    font-size: clamp(1.5rem, 5vw, 2.2rem);
    color: rgba(255,255,255,0.2);
    transition: all 0.3s ease;
}

.star.earned {
    color: var(--color-accent2);
    text-shadow: 0 0 15px rgba(255,209,102,0.6);
}

.complete-bonuses {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin: 10px 0;
}

.bonus-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--color-accent);
    padding: 4px 8px;
    background: rgba(6,214,160,0.08);
    border-radius: 6px;
}

/* ============================================
   CRASH SCREEN
   ============================================ */

.crash-icon {
    font-size: 3rem;
    margin-bottom: 8px;
    animation: shake 0.5s ease;
}

.crash-title {
    color: var(--color-danger);
    text-shadow: 0 0 20px rgba(239,35,60,0.5);
}

.crash-level {
    font-size: 1rem;
    color: var(--color-text-dim);
    letter-spacing: 3px;
    margin-bottom: 12px;
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */

::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.05);
}

::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2);
    border-radius: 2px;
}

/* ============================================
   FOCUS STATES (Accessibility)
   ============================================ */

button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}