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

:root {
    --bg-color: #0d0c0a;
    --panel-bg: rgba(22, 19, 16, 0.85);
    --panel-border: rgba(212, 175, 55, 0.2);
    --text-primary: #f5f2eb;
    --text-muted: #9c8e76;
    
    /* Steampunk Metal Theme Colors */
    --gold-color: #e5b22b;
    --gold-glow: rgba(229, 178, 43, 0.4);
    --copper-color: #b85c28;
    --copper-glow: rgba(184, 92, 40, 0.45);
    --iron-color: #4b525d;
    --iron-glow: rgba(75, 82, 93, 0.4);
    --crush-color: #ef4444;
    --crush-glow: rgba(239, 68, 68, 0.55);
    --shield-color: #d4af37;
    --shield-glow: rgba(212, 175, 55, 0.6);
    
    --font-main: 'Outfit', sans-serif;
    --font-code: 'Space Grotesk', sans-serif;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(circle at 15% 20%, rgba(184, 92, 40, 0.08) 0%, transparent 45%),
        radial-gradient(circle at 85% 80%, rgba(229, 178, 43, 0.06) 0%, transparent 45%),
        repeating-linear-gradient(rgba(255,255,255,0.005) 0px, rgba(255,255,255,0.005) 1px, transparent 1px, transparent 12px);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    min-height: 100dvh;
    overflow: hidden;
}

/* App Container Layout */
#app {
    width: 100%;
    max-width: 650px;
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    padding: 16px;
    justify-content: space-between;
}

/* HUD Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0 16px;
}

h1 {
    font-size: 22px;
    font-weight: 900;
    letter-spacing: 2px;
    margin: 0;
    font-family: var(--font-code);
}

.logo {
    display: flex;
    align-items: center;
}

.gold-glow {
    color: var(--gold-color);
    text-shadow: 0 0 10px var(--gold-glow);
}

.hud-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.score-board {
    display: flex;
    gap: 8px;
}

.score-box {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    padding: 6px 14px;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 75px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}

.score-box .label {
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.score-box .value {
    font-family: var(--font-code);
    font-size: 18px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--gold-color);
    text-shadow: 0 0 4px rgba(229, 178, 43, 0.2);
}

/* Icon Buttons (Mute) */
.icon-btn {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    color: var(--text-primary);
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}

.icon-btn:hover {
    border-color: var(--gold-color);
    background: rgba(229, 178, 43, 0.08);
    transform: translateY(-1px);
}

.icon-btn:active {
    transform: translateY(1px);
}

.hidden {
    display: none !important;
}

/* Main Area - Aspect Ratio Locking Canvas Container */
main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    max-height: calc(100vh - 140px);
}

.canvas-container {
    width: 100%;
    max-width: 500px;
    aspect-ratio: 1/1;
    position: relative;
    background: #0f0e0c;
    border-radius: 28px;
    border: 1px solid rgba(212, 175, 55, 0.04);
    box-shadow: 
        0 24px 48px rgba(0, 0, 0, 0.75),
        inset 0 0 0 2px rgba(212, 175, 55, 0.02);
    overflow: hidden;
}

canvas {
    width: 100%;
    height: 100%;
    display: block;
    border-radius: 28px;
}

/* Glassmorphism Overlays */
.overlay {
    position: absolute;
    inset: 0;
    background: rgba(13, 11, 9, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    transition: opacity 0.4s ease, visibility 0.4s ease;
    opacity: 1;
    visibility: visible;
}

.overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.overlay-content {
    width: 90%;
    max-width: 400px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 24px;
}

/* Steampunk Rotating Gear Icon in Overlay */
.steampunk-animation-icon {
    position: relative;
    width: 110px;
    height: 90px;
    margin-bottom: 20px;
}

.cog-wheel {
    border-radius: 50%;
    border: 3.5px dashed var(--gold-color);
    box-shadow: 0 0 10px rgba(229, 178, 43, 0.2);
    position: absolute;
}

.cog-wheel::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 55%;
    height: 55%;
    border: 1.5px solid var(--gold-color);
    border-radius: 50%;
}

.cog-wheel::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 25%;
    height: 25%;
    background: var(--gold-color);
    border-radius: 50%;
}

.cog-wheel.inner-cog {
    width: 46px;
    height: 46px;
    top: 30px;
    left: 12px;
    border-color: var(--copper-color);
    animation: rotateCW 4.5s linear infinite;
}

.cog-wheel.inner-cog::before {
    border-color: var(--copper-color);
}
.cog-wheel.inner-cog::after {
    background: var(--copper-color);
}

.cog-wheel.outer-cog {
    width: 62px;
    height: 62px;
    top: 10px;
    left: 48px;
    border-color: var(--gold-color);
    animation: rotateCCW 6s linear infinite;
}

/* Steam Puff Animation */
.steam-puff {
    position: absolute;
    background: rgba(220, 210, 195, 0.15);
    border-radius: 50%;
    filter: blur(4px);
    opacity: 0;
    pointer-events: none;
}

.steam-puff.p1 {
    width: 14px;
    height: 14px;
    top: 8px;
    left: 40px;
    animation: puffOut 2.2s infinite ease-out;
}

.steam-puff.p2 {
    width: 18px;
    height: 18px;
    top: 36px;
    left: 52px;
    animation: puffOut 2.2s infinite ease-out 1.1s;
}

.game-title-large {
    font-size: 28px;
    font-weight: 900;
    letter-spacing: 2px;
    font-family: var(--font-code);
    margin-bottom: 12px;
    color: var(--text-primary);
}

.game-title-large.crush-text {
    color: var(--crush-color);
    text-shadow: 0 0 15px var(--crush-glow);
    animation: shake 0.5s ease-in-out;
}

.description {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 24px;
    max-width: 330px;
}

/* Control Guides on Start Screen */
.controls-guide {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    background: rgba(212, 175, 55, 0.015);
    border: 1px solid rgba(212, 175, 55, 0.05);
    border-radius: 16px;
    padding: 14px;
    margin-bottom: 24px;
}

.guide-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-primary);
}

.guide-key {
    background: #251f18;
    border: 1px solid #4a3b2b;
    border-radius: 6px;
    padding: 2px 6px;
    font-family: var(--font-code);
    font-size: 11px;
    font-weight: 700;
    color: var(--gold-color);
    box-shadow: 0 2px 0 #130f0a;
}

.guide-text {
    margin-left: auto;
    color: var(--text-muted);
}

/* Premium Steampunk Buttons */
.primary-btn {
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--copper-color) 100%);
    color: #0c0a07;
    font-family: var(--font-code);
    font-weight: 800;
    font-size: 14px;
    letter-spacing: 1.5px;
    padding: 14px 34px;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 14px;
    cursor: pointer;
    box-shadow: 
        0 8px 24px rgba(184, 92, 40, 0.25),
        inset 0 1px 0 rgba(255,255,255,0.2);
    transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 12px 28px rgba(184, 92, 40, 0.38),
        inset 0 1px 0 rgba(255,255,255,0.3);
}

.primary-btn:active {
    transform: translateY(1px);
    box-shadow: 0 4px 12px rgba(184, 92, 40, 0.15);
}

.primary-btn.pulse-glow {
    background: linear-gradient(135deg, var(--crush-color) 0%, #b21818 100%);
    color: #ffffff;
    box-shadow: 0 8px 24px rgba(239, 68, 68, 0.25);
    border-color: rgba(255,255,255,0.1);
}

.primary-btn.pulse-glow:hover {
    box-shadow: 0 12px 28px rgba(239, 68, 68, 0.4);
}

.tip-text {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 12px;
}

.kbd {
    background: rgba(212, 175, 55, 0.08);
    border-radius: 4px;
    padding: 1px 4px;
    font-family: var(--font-code);
    color: var(--gold-color);
}

/* Stats Cards for Game Over */
.stats-grid {
    display: flex;
    gap: 16px;
    width: 100%;
    margin-bottom: 24px;
}

.stat-card {
    flex: 1;
    background: rgba(212, 175, 55, 0.015);
    border: 1px solid rgba(212, 175, 55, 0.05);
    padding: 12px;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 9px;
    color: var(--text-muted);
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 22px;
    font-weight: 800;
    font-family: var(--font-code);
    color: var(--gold-color);
    text-shadow: 0 0 5px rgba(229, 178, 43, 0.15);
}

/* HUD Indicator (Shield Overlay) */
.hud-indicator {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(229, 178, 43, 0.12);
    border: 1px solid rgba(229, 178, 43, 0.35);
    color: var(--gold-color);
    padding: 6px 12px;
    border-radius: 30px;
    font-size: 10px;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 6px;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.35);
    animation: pulseGlowGold 1.2s ease-in-out infinite alternate;
    pointer-events: none;
    z-index: 5;
}

/* Footer Hint Text */
footer {
    display: flex;
    justify-content: center;
    padding: 16px 0 8px;
}

.footer-hint {
    font-size: 13px;
    color: var(--text-muted);
    text-align: center;
    max-width: 85%;
    line-height: 1.5;
}

/* Responsive Utilities */
.mobile-only {
    display: none;
}

/* Media Queries for Mobile Responsiveness */
@media (max-width: 480px) {
    #app {
        padding: 12px;
    }
    
    header {
        padding: 4px 0 12px;
    }
    
    h1 {
        font-size: 17px;
    }
    
    .score-box {
        padding: 4px 10px;
        min-width: 60px;
    }
    
    .score-box .value {
        font-size: 15px;
    }
    
    .icon-btn {
        width: 36px;
        height: 36px;
        border-radius: 10px;
    }
    
    .canvas-container {
        border-radius: 20px;
    }
    
    canvas {
        border-radius: 20px;
    }
    
    .overlay-content {
        padding: 16px;
    }
    
    .game-title-large {
        font-size: 23px;
    }
    
    .description {
        font-size: 12px;
        margin-bottom: 18px;
    }
    
    .controls-guide {
        padding: 10px;
        margin-bottom: 18px;
    }
    
    .guide-item {
        font-size: 11px;
    }
    
    .primary-btn {
        padding: 12px 26px;
        font-size: 13px;
    }
    
    .stats-grid {
        margin-bottom: 18px;
        gap: 10px;
    }
    
    .stat-value {
        font-size: 19px;
    }
    
    .hud-indicator {
        top: 12px;
        left: 12px;
        font-size: 9px;
        padding: 4px 8px;
    }
    
    .desktop-only {
        display: none;
    }
    
    .mobile-only {
        display: block;
    }
}

/* Keyframe Animations */
@keyframes rotateCW {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes rotateCCW {
    from { transform: rotate(360deg); }
    to { transform: rotate(0deg); }
}

@keyframes puffOut {
    0% {
        transform: scale(0.4) translate(0, 0);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.1;
    }
    100% {
        transform: scale(1.6) translate(-10px, -20px);
        opacity: 0;
    }
}

@keyframes pulseGlowGold {
    from {
        box-shadow: 0 4px 12px rgba(0,0,0,0.2), 0 0 3px rgba(229, 178, 43, 0.2);
        border-color: rgba(229, 178, 43, 0.3);
    }
    to {
        box-shadow: 0 4px 12px rgba(0,0,0,0.2), 0 0 10px rgba(229, 178, 43, 0.6);
        border-color: rgba(229, 178, 43, 0.6);
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}

.text-anim {
    animation: textPulse 3s linear infinite alternate;
}

@keyframes textPulse {
    0% {
        text-shadow: 0 0 5px var(--gold-glow);
    }
    100% {
        text-shadow: 0 0 15px var(--gold-color), 0 0 25px var(--gold-glow);
    }
}