/* ==========================================
   ROAD FURY - Cartoon Hypercasual Style
   ========================================== */

:root {
    --color-bg: #4A7C59;
    --color-panel: rgba(255, 255, 255, 0.92);
    --color-panel-dark: rgba(40, 50, 65, 0.88);
    --color-text: #2C3A4B;
    --color-text-light: #6B7B8D;
    --color-accent: #FF6B35;
    --color-accent-warm: #FFD93D;
    --color-primary: #4A90D9;
    --color-danger: #E85D75;
    --color-success: #5CB85C;
    --color-shield: #5BC0DE;
    --font-main: 'Outfit', -apple-system, sans-serif;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-medium: 0 8px 32px rgba(0, 0, 0, 0.18);
    --shadow-strong: 0 12px 48px rgba(0, 0, 0, 0.25);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #2C3A4B;
    font-family: var(--font-main);
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
}

#game-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    max-width: 480px;
    max-height: 860px;
    overflow: hidden;
    border-radius: 0;
    background: var(--color-bg);
}

@media (min-width: 520px) {
    #game-wrapper {
        border-radius: 24px;
        box-shadow: var(--shadow-strong);
    }
}

#gameCanvas {
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

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

.screen {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.screen.hidden {
    opacity: 0;
    pointer-events: none;
    transform: scale(0.95);
}

/* MENU */
#menu-screen {
    background: linear-gradient(180deg, 
        rgba(74, 124, 89, 0.6) 0%, 
        rgba(44, 58, 75, 0.85) 100%
    );
    backdrop-filter: blur(8px);
}

.menu-content {
    text-align: center;
    padding: 40px 30px;
}

.title-group {
    margin-bottom: 48px;
}

.game-title {
    font-size: 72px;
    font-weight: 900;
    color: #FFFFFF;
    line-height: 0.95;
    letter-spacing: -2px;
    text-shadow: 
        0 4px 0 #D35400,
        0 8px 0 #A04000,
        0 12px 24px rgba(0, 0, 0, 0.3);
    animation: titleBounce 2s ease-in-out infinite;
}

@keyframes titleBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.game-subtitle {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-accent-warm);
    margin-top: 12px;
    letter-spacing: 2px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* BUTTONS */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 48px;
    font-family: var(--font-main);
    font-size: 22px;
    font-weight: 800;
    color: #FFFFFF;
    background: linear-gradient(135deg, var(--color-accent) 0%, #E8532B 100%);
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    box-shadow: 
        0 4px 0 #B5441E,
        0 8px 24px rgba(255, 107, 53, 0.35);
    transition: all 0.15s ease;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.2) 0%, transparent 50%);
    border-radius: inherit;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 6px 0 #B5441E,
        0 12px 32px rgba(255, 107, 53, 0.45);
}

.btn-primary:active {
    transform: translateY(2px);
    box-shadow: 
        0 2px 0 #B5441E,
        0 4px 12px rgba(255, 107, 53, 0.3);
}

.btn-icon {
    font-size: 20px;
}

/* CONTROLS HINT */
.controls-hint {
    margin-top: 36px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
}

.hint-row {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.key {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* GAME OVER */
#gameover-screen {
    background: linear-gradient(180deg, 
        rgba(44, 58, 75, 0.7) 0%, 
        rgba(30, 30, 30, 0.9) 100%
    );
    backdrop-filter: blur(12px);
}

.gameover-content {
    text-align: center;
    padding: 40px 30px;
    animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from { transform: translateY(40px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.gameover-title {
    font-size: 48px;
    font-weight: 900;
    color: var(--color-danger);
    text-shadow: 0 4px 0 #A0303F, 0 8px 24px rgba(0,0,0,0.3);
    margin-bottom: 32px;
    letter-spacing: 2px;
}

.score-display {
    margin-bottom: 16px;
}

.final-score-label {
    font-size: 14px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 4px;
}

.final-score-value {
    font-size: 64px;
    font-weight: 900;
    color: var(--color-accent-warm);
    text-shadow: 0 4px 16px rgba(255, 217, 61, 0.3);
    line-height: 1;
}

.best-score-row {
    font-size: 16px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.stats-row {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 36px;
}

.stat-item {
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 12px 20px;
    min-width: 80px;
}

.stat-value {
    font-size: 28px;
    font-weight: 800;
    color: #FFFFFF;
}

.stat-label {
    font-size: 11px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.45);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 2px;
}

/* ==========================================
   HUD
   ========================================== */

#hud {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 5;
    transition: opacity 0.3s ease;
}

#hud.hidden {
    opacity: 0;
}

#hud-top {
    position: absolute;
    top: 12px;
    left: 12px;
    right: 12px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
}

.hud-panel {
    background: var(--color-panel);
    border-radius: var(--radius-md);
    padding: 8px 16px;
    box-shadow: var(--shadow-soft);
}

.hud-label {
    font-size: 10px;
    font-weight: 700;
    color: var(--color-text-light);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hud-value {
    font-size: 28px;
    font-weight: 900;
    color: var(--color-text);
    line-height: 1.1;
}

.hud-combo {
    background: var(--color-accent);
    color: #FFFFFF;
    font-weight: 800;
    font-size: 18px;
    padding: 8px 14px;
    animation: comboPulse 0.6s ease-in-out infinite;
    transition: opacity 0.2s, transform 0.2s;
}

.hud-combo.hidden {
    opacity: 0;
    transform: scale(0.7);
}

@keyframes comboPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); }
}

#hud-bottom {
    position: absolute;
    bottom: 12px;
    left: 12px;
    right: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--color-panel);
    border-radius: var(--radius-md);
    padding: 8px 14px;
    box-shadow: var(--shadow-soft);
}

.hud-item {
    display: flex;
    align-items: center;
    gap: 5px;
    flex: 1;
}

.hud-item-icon {
    font-size: 16px;
}

.hud-item-value {
    font-size: 16px;
    font-weight: 800;
    color: var(--color-text);
}

.hud-bar {
    flex: 1;
    height: 10px;
    background: #E8ECF0;
    border-radius: 5px;
    overflow: hidden;
}

.hud-bar-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 0.3s ease;
}

.health-fill {
    background: linear-gradient(90deg, var(--color-danger), #FF8A9B);
    width: 100%;
}

.shield-fill {
    background: linear-gradient(90deg, var(--color-shield), #8FE0F0);
    width: 0%;
}

/* ==========================================
   MOBILE CONTROLS
   ========================================== */

#mobile-controls {
    position: absolute;
    bottom: 60px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    z-index: 6;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

#mobile-controls.hidden {
    opacity: 0;
    pointer-events: none;
}

.mobile-btn {
    pointer-events: auto;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: none;
    font-size: 22px;
    font-weight: 800;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.1s ease;
    -webkit-tap-highlight-color: transparent;
}

.mobile-btn:active {
    transform: scale(0.9);
}

.mobile-btn-left,
.mobile-btn-right {
    background: var(--color-panel);
    color: var(--color-text);
    box-shadow: var(--shadow-soft);
}

.mobile-btn-fire {
    width: 76px;
    height: 76px;
    font-size: 28px;
    background: linear-gradient(135deg, var(--color-accent), #E8532B);
    color: #FFFFFF;
    box-shadow: 
        0 4px 0 #B5441E,
        0 8px 24px rgba(255, 107, 53, 0.35);
}

.mobile-btn-fire:active {
    transform: scale(0.9) translateY(2px);
    box-shadow: 
        0 2px 0 #B5441E,
        0 4px 12px rgba(255, 107, 53, 0.3);
}

/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 480px) {
    .game-title {
        font-size: 56px;
    }
    
    .btn-primary {
        padding: 14px 40px;
        font-size: 20px;
    }
    
    .gameover-title {
        font-size: 40px;
    }
    
    .final-score-value {
        font-size: 52px;
    }
    
    .stats-row {
        gap: 12px;
    }
    
    .stat-item {
        padding: 10px 14px;
        min-width: 70px;
    }
}

@media (max-height: 650px) {
    .title-group {
        margin-bottom: 28px;
    }
    
    .game-title {
        font-size: 48px;
    }
    
    .controls-hint {
        margin-top: 20px;
    }
    
    .gameover-title {
        margin-bottom: 20px;
        font-size: 36px;
    }
    
    .final-score-value {
        font-size: 44px;
    }
    
    .stats-row {
        margin-bottom: 24px;
    }
}

/* Hide mobile controls on desktop */
@media (hover: hover) and (pointer: fine) {
    #mobile-controls {
        display: none !important;
    }
    
    #hud-bottom {
        bottom: 12px;
    }
}

/* Show mobile controls on touch devices */
@media (hover: none) and (pointer: coarse) {
    .controls-hint {
        display: none;
    }
    
    #hud-bottom {
        bottom: 80px;
    }
}