/* ============================================
   Tidepool — Touch-Based Calm
   A PNEUOMA Game
   ============================================ */

:root {
    /* Deep ocean palette */
    --bg-deep: #030810;
    --bg-mid: #051525;
    --bg-surface: #0a2035;
    
    /* Bioluminescent accents */
    --glow-cyan: #00ffff;
    --glow-blue: #4169e1;
    --glow-purple: #9370db;
    --glow-green: #00fa9a;
    --glow-pink: #ff69b4;
    --glow-gold: #ffd700;
    
    /* Text */
    --text-primary: #e0f0ff;
    --text-secondary: #7aa5c4;
    --text-muted: #4a6a84;
    
    /* Typography */
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'DM Sans', -apple-system, sans-serif;
    
    /* Transitions */
    --transition-slow: 800ms ease;
    --transition-base: 400ms ease;
    --transition-fast: 200ms ease;
}

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    touch-action: none;
}

body {
    font-family: var(--font-body);
    background: var(--bg-deep);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    cursor: none;
}

/* ============================================
   Screens
   ============================================ */
.screen {
    position: fixed;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
    background: var(--bg-deep);
}

.screen.active {
    opacity: 1;
    visibility: visible;
}

.screen-content {
    text-align: center;
    padding: 2rem;
    max-width: 500px;
}

/* ============================================
   Start Screen
   ============================================ */
#start-screen {
    background: radial-gradient(ellipse at center bottom, #0a2545 0%, var(--bg-deep) 70%);
}

.logo-mark {
    position: relative;
    width: 150px;
    height: 150px;
    margin: 0 auto 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--glow-cyan);
    animation: ripple 4s ease-out infinite;
}

.ripple-1 {
    width: 100%;
    height: 100%;
    animation-delay: 0s;
}

.ripple-2 {
    width: 100%;
    height: 100%;
    animation-delay: 1.3s;
}

.ripple-3 {
    width: 100%;
    height: 100%;
    animation-delay: 2.6s;
}

@keyframes ripple {
    0% {
        transform: scale(0.3);
        opacity: 1;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

.logo-center {
    width: 30px;
    height: 30px;
    background: radial-gradient(circle, var(--glow-cyan) 0%, rgba(0, 255, 255, 0.3) 60%, transparent 70%);
    border-radius: 50%;
    box-shadow: 0 0 40px var(--glow-cyan);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.1); opacity: 1; }
}

.title {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--glow-cyan), var(--glow-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.btn-start {
    background: transparent;
    border: 1px solid var(--glow-cyan);
    color: var(--glow-cyan);
    padding: 1rem 2.5rem;
    font-family: var(--font-body);
    font-size: 1rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-start::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--glow-cyan);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.btn-start:hover {
    color: var(--bg-deep);
    box-shadow: 0 0 30px rgba(0, 255, 255, 0.4);
}

.btn-start:hover::before {
    opacity: 1;
}

.btn-start span {
    position: relative;
    z-index: 1;
}

.hint {
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ============================================
   Game Screen
   ============================================ */
#game-screen {
    background: var(--bg-deep);
}

#game-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

/* HUD */
.hud {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    pointer-events: none;
    z-index: 10;
}

.hud-item {
    background: rgba(5, 21, 37, 0.7);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1.25rem;
    border-radius: 12px;
    border: 1px solid rgba(0, 255, 255, 0.1);
}

.hud-label {
    display: block;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.hud-value {
    font-size: 0.9rem;
    color: var(--glow-cyan);
}

/* Presence Meter */
.presence-meter {
    min-width: 150px;
}

.meter-bar {
    height: 4px;
    background: rgba(0, 255, 255, 0.1);
    border-radius: 2px;
    margin: 0.5rem 0;
    overflow: hidden;
}

.meter-fill {
    height: 100%;
    width: 30%;
    background: linear-gradient(90deg, var(--glow-cyan), var(--glow-green));
    border-radius: 2px;
    transition: width var(--transition-base);
}

/* Timer */
.timer {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
}

/* Creatures Count */
.creatures-count .hud-value {
    font-size: 1.5rem;
    font-family: var(--font-display);
}

/* Touch Indicator */
.touch-indicator {
    position: fixed;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--glow-cyan);
    pointer-events: none;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    z-index: 100;
}

.touch-indicator.active {
    opacity: 0.6;
}

.touch-indicator.fast {
    border-color: var(--glow-pink);
    transform: translate(-50%, -50%) scale(1.5);
    opacity: 0.3;
}

.touch-indicator.slow {
    border-color: var(--glow-green);
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0.8;
    box-shadow: 0 0 20px var(--glow-green);
}

/* Message Display */
.message-display {
    position: fixed;
    bottom: 15%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(5, 21, 37, 0.8);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    border-radius: 30px;
    border: 1px solid rgba(0, 255, 255, 0.2);
    transition: opacity var(--transition-base);
    z-index: 20;
}

.message-display.hidden {
    opacity: 0;
    pointer-events: none;
}

.message-display p {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-style: italic;
    color: var(--text-primary);
}

/* ============================================
   End Screen
   ============================================ */
#end-screen {
    background: radial-gradient(ellipse at center, #0a2545 0%, var(--bg-deep) 70%);
}

.end-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
}

.end-message {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.session-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 2.5rem;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--glow-cyan);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.closing-message {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-style: italic;
    color: var(--glow-cyan);
    margin-bottom: 2rem;
}

.back-link {
    display: inline-block;
    margin-top: 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--text-secondary);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 600px) {
    .title {
        font-size: 2.5rem;
    }
    
    .description {
        font-size: 1rem;
    }
    
    .hud {
        padding: 1rem;
    }
    
    .hud-item {
        padding: 0.5rem 0.75rem;
    }
    
    .session-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
}

/* ============================================
   Accessibility
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* Custom cursor for desktop */
@media (pointer: fine) {
    body {
        cursor: none;
    }
}

/* Selection */
::selection {
    background: var(--glow-cyan);
    color: var(--bg-deep);
}