/* ===== MOON PARKOUR — GLOBAL STYLES ===== */

:root {
    --color-bg: #030712;
    --color-primary: #38bdf8;
    --color-primary-dim: #0c4a6e;
    --color-accent: #a78bfa;
    --color-danger: #f43f5e;
    --color-success: #34d399;
    --color-text: #e2e8f0;
    --color-text-dim: #64748b;
    --color-surface: rgba(15, 23, 42, 0.85);
    --color-glass: rgba(56, 189, 248, 0.08);
    --font-display: 'Orbitron', monospace;
    --font-body: 'Space Mono', monospace;
    --blur: 16px;
}

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

body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    cursor: default;
    -webkit-font-smoothing: antialiased;
}

canvas#game-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hidden {
    display: none !important;
}

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

#loading-screen {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.loader-content {
    text-align: center;
}

.loader-ring {
    width: 80px;
    height: 80px;
    margin: 0 auto 2rem;
    border: 3px solid var(--color-primary-dim);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loader-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: 0.15em;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.loader-subtitle {
    color: var(--color-text-dim);
    font-size: 0.85rem;
    margin-bottom: 2rem;
}

.loader-bar-container {
    width: 280px;
    height: 4px;
    background: var(--color-primary-dim);
    border-radius: 2px;
    margin: 0 auto;
    overflow: hidden;
}

.loader-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 2px;
    transition: width 0.3s ease;
}

.loader-percent {
    margin-top: 0.75rem;
    font-size: 0.75rem;
    color: var(--color-primary);
    font-family: var(--font-display);
}

/* ===== MENU SCREEN ===== */

#menu-screen {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at 50% 120%, rgba(56, 189, 248, 0.06) 0%, transparent 60%);
}

.menu-content {
    text-align: center;
    z-index: 10;
    animation: menuFadeIn 1s ease forwards;
}

@keyframes menuFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.menu-title {
    font-family: var(--font-display);
    font-size: 5rem;
    font-weight: 900;
    letter-spacing: 0.1em;
    line-height: 1.05;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 50%, #f0abfc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    text-shadow: 0 0 60px rgba(56, 189, 248, 0.3);
    filter: drop-shadow(0 0 30px rgba(56, 189, 248, 0.15));
}

.menu-desc {
    color: var(--color-text-dim);
    font-size: 0.9rem;
    line-height: 1.6;
    max-width: 420px;
    margin: 0 auto 2.5rem;
}

.btn-glow {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    padding: 1rem 3rem;
    border: none;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-bg);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.3s;
}

.btn-glow:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 40px rgba(56, 189, 248, 0.4), 0 0 80px rgba(167, 139, 250, 0.2);
}

.btn-glow:active {
    transform: translateY(0) scale(0.98);
}

.btn-glow::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.15) 50%, transparent 70%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) rotate(25deg); }
    100% { transform: translateX(100%) rotate(25deg); }
}

.btn-outline {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    padding: 0.8rem 2.5rem;
    border: 2px solid var(--color-primary-dim);
    border-radius: 8px;
    background: transparent;
    color: var(--color-primary);
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 0.75rem;
}

.btn-outline:hover {
    border-color: var(--color-primary);
    background: var(--color-glass);
}

.menu-controls {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-top: 3rem;
}

.control-key {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.key {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.5rem 1rem;
    border: 2px solid var(--color-primary-dim);
    border-radius: 6px;
    background: var(--color-surface);
    color: var(--color-primary);
    letter-spacing: 0.1em;
    backdrop-filter: blur(var(--blur));
}

.key-label {
    font-size: 0.7rem;
    color: var(--color-text-dim);
}

.menu-footer {
    position: absolute;
    bottom: 2rem;
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    color: var(--color-text-dim);
    opacity: 0.4;
}

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

#hud {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    pointer-events: none;
    padding: 1.5rem 2rem;
}

.hud-top {
    display: flex;
    gap: 2.5rem;
    align-items: flex-start;
}

.hud-score {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.hud-label {
    font-family: var(--font-display);
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--color-text-dim);
}

.hud-value {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1;
}

.hud-unit {
    font-family: var(--font-display);
    font-size: 0.6rem;
    color: var(--color-text-dim);
    letter-spacing: 0.1em;
}

.gravity-bar-container {
    width: 120px;
    height: 6px;
    background: var(--color-primary-dim);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 0.25rem;
}

.gravity-bar {
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, var(--color-danger), var(--color-success));
    border-radius: 3px;
    transition: width 0.5s ease;
}

.hud-gravity-val {
    font-size: 1rem !important;
}

.hud-warning {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-danger);
    letter-spacing: 0.15em;
    text-shadow: 0 0 30px rgba(244, 63, 94, 0.5);
    animation: warningPulse 0.8s ease infinite;
    pointer-events: none;
}

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

/* ===== GAME OVER ===== */

#gameover-screen {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(3, 7, 18, 0.85);
    backdrop-filter: blur(12px);
}

.gameover-content {
    text-align: center;
    animation: menuFadeIn 0.6s ease forwards;
}

.gameover-title {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: 0.1em;
    color: var(--color-danger);
    text-shadow: 0 0 40px rgba(244, 63, 94, 0.4);
    margin-bottom: 2rem;
}

.gameover-stats {
    background: var(--color-surface);
    border: 1px solid rgba(56, 189, 248, 0.1);
    border-radius: 12px;
    padding: 1.5rem 3rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(var(--blur));
}

.stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 3rem;
    padding: 0.6rem 0;
    border-bottom: 1px solid rgba(56, 189, 248, 0.06);
}

.stat-row:last-child {
    border-bottom: none;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--color-text-dim);
}

.stat-value {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
}

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

@media (max-width: 768px) {
    .menu-title {
        font-size: 3rem;
    }

    .menu-controls {
        gap: 1rem;
    }

    .hud-top {
        gap: 1.5rem;
    }

    .hud-value {
        font-size: 1.3rem;
    }

    .gameover-title {
        font-size: 2rem;
    }

    .gameover-stats {
        padding: 1rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .menu-title {
        font-size: 2.2rem;
    }

    .menu-desc {
        font-size: 0.8rem;
        padding: 0 1rem;
    }

    .menu-controls {
        flex-wrap: wrap;
        justify-content: center;
    }
}