/* ============================================
   GLOBAL & THEME VARIABLES
   ============================================ */
:root {
    --color-bg-deep: #0a0e27;
    --color-bg-mid: #1a1f3a;
    --color-primary: #00d9ff;
    --color-secondary: #ff006e;
    --color-accent: #8338ec;
    --color-success: #06ffa5;
    --color-warning: #ffbe0b;
    
    --glow-primary: 0 0 20px rgba(0, 217, 255, 0.5);
    --glow-secondary: 0 0 20px rgba(255, 0, 110, 0.5);
    --glow-accent: 0 0 20px rgba(131, 56, 236, 0.5);
}

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

body {
    font-family: 'Rajdhani', sans-serif;
    background: var(--color-bg-deep);
    color: white;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
}

/* ============================================
   SCREEN MANAGEMENT
   ============================================ */
.screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none; 
    z-index: 1;
}

.screen.active {
    display: block;
    opacity: 1;
    pointer-events: all; 
}

.overlay-screen {
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   LOADER SCREEN
   ============================================ */
#loaderScreen {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 50%, #0a0e27 100%);
}

.loader-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
}

.loader-title .game-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 6rem;
    font-weight: 900;
    color: var(--color-primary);
    text-shadow: var(--glow-primary);
    margin-bottom: 0.5rem;
}

.loader-title .title-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-secondary);
    text-shadow: var(--glow-secondary);
}

.loader-spinner {
    position: relative;
    width: 150px;
    height: 150px;
}

.spinner-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid transparent;
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1.5s linear infinite;
}

.spinner-ring:nth-child(2) {
    width: 80%;
    height: 80%;
    top: 10%;
    left: 10%;
    border-top-color: var(--color-secondary);
    animation-duration: 1s;
    animation-direction: reverse;
}

.spinner-ring:nth-child(3) {
    width: 60%;
    height: 60%;
    top: 20%;
    left: 20%;
    border-top-color: var(--color-accent);
    animation-duration: 0.75s;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loader-text {
    font-family: 'Rajdhani', sans-serif;
    font-size: 1.2rem;
    color: var(--color-primary);
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* ============================================
   MAIN MENU
   ============================================ */
#mainMenu {
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 25%, #2d1b4e 50%, #1a1f3a 75%, #0a0e27 100%);
    background-size: 200% 200%;
    animation: bgShift 20s ease infinite;
    z-index: -1;
    pointer-events: none; 
}

@keyframes bgShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.menu-content {
    text-align: center;
    padding: 2rem;
    max-width: 800px;
    width: 100%;
}

.title-container { margin-bottom: 3rem; }

.game-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 6rem;
    font-weight: 900;
    color: var(--color-primary);
    text-shadow: var(--glow-primary);
    margin-bottom: 0.5rem;
}

.title-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-secondary);
    text-shadow: var(--glow-secondary);
}

.subtitle {
    font-family: 'Rajdhani', sans-serif;
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-accent);
    margin-top: 1rem;
}

/* Character Selection */
.character-select { margin: 3rem 0; }

.character-select h2,
.complexity-select h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.shape-options {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.shape-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(0, 217, 255, 0.2);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.shape-option:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--glow-primary);
}

.shape-option.selected {
    background: rgba(0, 217, 255, 0.2);
    border-color: var(--color-primary);
    box-shadow: 0 0 30px rgba(0, 217, 255, 0.6);
}

.shape-preview {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.cube-preview {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    box-shadow: var(--glow-primary);
}

.sphere-preview {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, var(--color-primary), var(--color-accent));
    box-shadow: var(--glow-primary);
}

.pyramid-preview {
    width: 0;
    height: 0;
    border-left: 35px solid transparent;
    border-right: 35px solid transparent;
    border-bottom: 60px solid var(--color-primary);
    filter: drop-shadow(var(--glow-primary));
}

.shape-option span { font-family: 'Orbitron', sans-serif; font-size: 0.9rem; }

/* Complexity Selection */
.complexity-select { margin: 3rem 0; }

.complexity-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
}

.complexity-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 4rem;
    font-weight: 900;
    color: var(--color-secondary);
    text-shadow: var(--glow-secondary);
    min-width: 150px;
}

.complexity-info { font-size: 0.9rem; color: var(--color-success); }

/* Stats Display */
.stats-display {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 3rem;
}

.stat { display: flex; flex-direction: column; gap: 0.5rem; }
.stat-label { font-size: 0.9rem; color: rgba(255, 255, 255, 0.6); }
.stat-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-success);
    text-shadow: 0 0 20px rgba(6, 255, 165, 0.5);
}

/* ============================================
   GAME SCREEN
   ============================================ */
#gameCanvas {
    display: block;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, #1a1f3a, #0a0e27);
}

#gameScreen { padding: 0; position: relative; }

#gameScreen canvas {
    border-radius: 10px;
    box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.5);
}

.hud {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem;
    pointer-events: none; 
    z-index: 10;
}

.hud-top {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
}

.hud-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    background: rgba(10, 14, 39, 0.8);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    border: 2px solid var(--color-primary);
    box-shadow: var(--glow-primary);
}

.hud-label { font-size: 0.8rem; color: rgba(255, 255, 255, 0.6); }
.hud-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.combo-display {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    opacity: 0;
}

.combo-display.active { display: flex; animation: comboAppear 0.5s ease forwards; }

@keyframes comboAppear {
    0% { opacity: 0; transform: translate(-50%, -50%) scale(0.5); }
    100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

.combo-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-warning);
}

.combo-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 4rem;
    font-weight: 900;
    color: var(--color-secondary);
    text-shadow: var(--glow-secondary);
}

/* ============================================
   FIXED: TOUCH ZONES
   ============================================ */
.touch-zones {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none !important; 
    z-index: 5;
    display: flex;
}

.touch-zone {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none !important; 
}

/* Trigger animation only when game screen is active */
#gameScreen.active .touch-zone {
    animation: touchZoneFade 3s ease-in-out;
}

.touch-zone-left {
    background: linear-gradient(to right, rgba(0, 217, 255, 0.1), transparent);
    border-right: 1px solid rgba(0, 217, 255, 0.2);
}

.touch-zone-right {
    background: linear-gradient(to left, rgba(0, 217, 255, 0.1), transparent);
    border-left: 1px solid rgba(0, 217, 255, 0.2);
}

.touch-zone-icon {
    font-size: 3rem;
    color: var(--color-primary);
    text-shadow: var(--glow-primary);
    opacity: 0.4;
}

@keyframes touchZoneFade {
    0% { opacity: 0; }
    15% { opacity: 1; }
    85% { opacity: 1; }
    100% { opacity: 0; }
}

/* ============================================
   BUTTONS & CONTROLS
   ============================================ */
.mobile-only { display: none; }
.desktop-only { display: flex; }

@media (hover: none) and (pointer: coarse) {
    .mobile-only { display: flex; }
    .desktop-only { display: none; }
}

button {
    font-family: 'Orbitron', sans-serif;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    user-select: none;
    pointer-events: all !important; 
}

button:focus { outline: none !important; }

.loader-btn {
    font-size: 1.5rem;
    font-weight: 700;
    padding: 1.2rem 2.5rem;
    background: linear-gradient(135deg, #00d9ff, #8338ec);
    color: white;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
}

.start-btn {
    font-size: 1.8rem;
    font-weight: 700;
    padding: 1.2rem 3rem;
    background: linear-gradient(135deg, #00d9ff, #8338ec);
    color: white;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
    display: block;
    margin: 2rem auto;
}

.menu-btn {
    font-size: 1.3rem !important;
    font-weight: 700;
    padding: 1rem 2.5rem !important;
    background: linear-gradient(135deg, #00d9ff, #8338ec) !important;
    color: white !important;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
    display: inline-block !important;
    margin: 0.5rem;
    position: relative;
    z-index: 10000 !important;
}

.complexity-btn {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #00d9ff, #8338ec);
    color: white;
    border-radius: 8px;
}

.sound-toggle-game {
    position: fixed;
    top: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: rgba(10, 14, 39, 0.8);
    border: 2px solid #00d9ff;
    color: white;
    border-radius: 50%;
    z-index: 1001;
    pointer-events: all !important;
}

/* ============================================
   OVERLAY & GAME OVER
   ============================================ */
.overlay-content { text-align: center; padding: 3rem; z-index: 10000 !important; }
.overlay-content h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-primary);
    text-shadow: var(--glow-primary);
    margin-bottom: 2rem;
}

.game-over-title {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.final-stats { display: flex; flex-direction: column; gap: 1.5rem; margin: 2rem 0; }
.final-stat-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--color-success);
    text-shadow: 0 0 20px rgba(6, 255, 165, 0.5);
}

.level-unlocked {
    display: none;
    margin: 2rem 0;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.2), rgba(131, 56, 236, 0.2));
    border: 2px solid var(--color-primary);
    border-radius: 10px;
    box-shadow: var(--glow-primary);
}

.level-unlocked.show { display: block; }

/* ============================================
   MOBILE TUTORIAL OVERLAY
   ============================================ */
.mobile-tutorial {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.mobile-tutorial.show { opacity: 1; pointer-events: all; }

.tutorial-content { text-align: center; padding: 3rem; max-width: 400px; }

.tutorial-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    animation: tutorialPulse 1.5s ease-in-out infinite;
}

@keyframes tutorialPulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.2); opacity: 1; }
}

.tutorial-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
    text-shadow: var(--glow-primary);
    margin-bottom: 1rem;
}

.tutorial-subtext {
    font-family: 'Rajdhani', sans-serif;
    font-size: 1.2rem;
    color: var(--color-success);
    margin-bottom: 2rem;
}

.tutorial-hint {
    font-family: 'Rajdhani', sans-serif;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
    animation: tutorialBlink 2s ease-in-out infinite;
}

@keyframes tutorialBlink {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}