:root {
    /* 青春活力配色 (Youthful Pop Palette) */
    
    /* 核心色：明亮、高饱和 */
    --pop-blue: #4CC9F0;
    --pop-purple: #7209B7;
    --pop-pink: #F72585;
    --pop-yellow: #FFD166;
    --pop-green: #06D6A0;
    --pop-dark: #2B2D42;
    --pop-white: #FFFFFF;

    /* 默认变量映射 */
    --bg-sky-top: var(--pop-blue);
    --bg-sky-bottom: var(--pop-white);
    
    --panel-bg: rgba(255, 255, 255, 0.95);
    --panel-border: var(--pop-blue);
    --panel-shadow: rgba(76, 201, 240, 0.3);
    
    --text-primary: var(--pop-dark);
    --accent-color: var(--pop-yellow);
    
    --btn-primary-bg: var(--pop-green);
    --btn-primary-border: #04A77D; /* Darker green for 3D effect */
}

/* 字体优化 */
body {
    font-family: 'Fredoka', 'Microsoft YaHei', cursive, sans-serif;
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    position: relative;
    transition: color 0.5s;
}

/* --- Start Screen Overhaul --- */
#scene-start {
    text-align: center;
    color: var(--pop-dark);
}

.title-container {
    margin-bottom: 60px;
    animation: bounce 3s ease-in-out infinite;
    position: relative;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.logo-icon {
    font-size: 6rem;
    margin-bottom: 10px;
    filter: drop-shadow(4px 4px 0px var(--pop-yellow));
}

.game-title {
    font-size: 5rem;
    font-weight: 900;
    letter-spacing: 4px;
    margin: 0;
    color: #fff;
    /* Pop style text stroke */
    -webkit-text-stroke: 3px var(--pop-dark); 
    text-shadow: 6px 6px 0px var(--pop-yellow);
    transform: rotate(-2deg); /* Slightly tilted for fun */
}

.game-subtitle {
    font-size: 2rem;
    font-weight: 700;
    color: var(--pop-dark);
    background: var(--pop-white);
    padding: 5px 20px;
    border-radius: 20px;
    border: 3px solid var(--pop-dark);
    box-shadow: 4px 4px 0px var(--pop-pink);
    display: inline-block;
    transform: rotate(2deg) translateY(-10px);
    margin-top: 10px;
}

.btn-gamestart {
    background: var(--pop-green);
    border: 4px solid var(--pop-dark);
    color: #fff;
    font-size: 2.5rem;
    padding: 20px 80px;
    border-radius: 50px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 900;
    /* 3D Button Effect */
    box-shadow: 0 8px 0 var(--pop-dark), 0 15px 20px rgba(0,0,0,0.2);
    transition: all 0.1s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
}

.btn-gamestart::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: rgba(255,255,255,0.2);
    border-radius: 50px 50px 0 0;
}

.btn-gamestart:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 0 var(--pop-dark), 0 20px 25px rgba(0,0,0,0.2);
    background: #07e6ac;
}

.btn-gamestart:active {
    transform: translateY(8px);
    box-shadow: 0 0 0 var(--pop-dark), 0 0 0 rgba(0,0,0,0);
}

.copyright {
    position: absolute;
    bottom: 20px;
    font-size: 1rem;
    font-weight: bold;
    color: var(--pop-dark);
    background: rgba(255,255,255,0.8);
    padding: 5px 15px;
    border-radius: 15px;
}

/* --- Lobby UI Refine --- */
.game-top-bar {
    background: rgba(255, 255, 255, 0.9);
    border: 4px solid var(--pop-dark);
    box-shadow: 0 8px 0 rgba(0,0,0,0.1), 0 15px 20px rgba(0,0,0,0.1); /* Floating shadow */
    border-radius: 50px; /* Pill shape */
    transform: translateY(0);
    transition: transform 0.2s;
}

.game-top-bar:hover {
    transform: translateY(-2px);
}

.panel {
    background: var(--pop-white);
    border: 4px solid var(--pop-dark);
    border-radius: 25px;
    box-shadow: 8px 8px 0px var(--panel-shadow); /* Hard colored shadow */
    backdrop-filter: none; /* Solid opaque for pop style */
}

.student-avatar {
    border: 4px solid var(--pop-dark);
    box-shadow: 4px 4px 0px var(--pop-yellow);
}

.bar-bg {
    background: #eee;
    border: 3px solid var(--pop-dark);
    border-radius: 15px;
    height: 20px;
}

.bar-fill {
    border-right: 3px solid var(--pop-dark);
    border-radius: 10px 0 0 10px;
}
.bar-fill.health { background: var(--pop-pink); }
.bar-fill.mood { background: var(--pop-yellow); }
.bar-fill.knowledge { background: var(--pop-blue); }

.market-card {
    background: #fff;
    border: 3px solid var(--pop-dark);
    border-radius: 18px;
    box-shadow: 4px 4px 0px #eee;
}

.market-card:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px var(--pop-purple);
    border-color: var(--pop-purple);
}

.btn-action-big {
    background: var(--pop-blue);
    color: #fff;
    border: 3px solid var(--pop-dark);
    box-shadow: 4px 4px 0px var(--pop-dark);
}

.btn-action-big:active {
    transform: translate(4px, 4px);
    box-shadow: none;
}

/* Game Scene */
.game-viewport {
    border: 6px solid var(--pop-dark);
    border-radius: 20px;
    box-shadow: 10px 10px 0px rgba(0,0,0,0.2);
}

/* Theme overrides removed for simplicity in this style, 
   but we keep structure if needed. 
   The Pop style is vibrant enough to stand alone. */
body.theme-dusk { --bg-sky-top: #FF9E00; --panel-shadow: #FF9E00; }
body.theme-night { --bg-sky-top: #240046; --panel-shadow: #7B2CBF; }

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none; /* 禁止选中文本，更像游戏 */
}

/* --- 动态背景层 --- */
#dynamic-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: #000;
}

#bg-slideshow {
    position: absolute;
    width: 100%;
    height: 100%;
}

.bg-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 2s ease-in-out;
}

.bg-slide.active {
    opacity: 1;
}

.bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3); /* Darken for readability */
    pointer-events: none;
}

/* --- App Container --- */
.app-container {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.scene {
    position: absolute;
    width: 100%;
    height: 100%;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.5s;
}

.scene.active {
    display: flex;
    opacity: 1;
    z-index: 10;
}

.copyright {
    position: absolute;
    bottom: 20px;
    font-size: 0.8rem;
    opacity: 0.6;
}

/* --- Scene 1: Lobby Layout Fix --- */
#scene-lobby {
    padding: 20px;
    justify-content: flex-start;
    gap: 20px; /* Add gap between top bar and content */
    overflow-y: auto; /* Allow scroll if screen is too small */
}

.game-top-bar {
    width: 90%;
    max-width: 1200px; /* Widen layout */
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--panel-bg);
    padding: 15px 30px;
    border-radius: 20px;
    border: 3px solid var(--panel-border);
    box-shadow: 0 8px 0 rgba(0,0,0,0.1);
    flex-shrink: 0; /* Prevent shrinking */
}

.lobby-content {
    width: 90%;
    max-width: 1200px;
    flex: 1; /* Fill remaining height */
    min-height: 0; /* Important for nested scrolling */
    display: flex;
    gap: 30px;
    margin-bottom: 20px;
}

/* Panel Common */
.panel {
    background: var(--panel-bg);
    border: 4px solid var(--pop-dark); /* Thicker border */
    border-radius: 30px; /* More rounded */
    padding: 25px;
    box-shadow: 10px 10px 0 var(--panel-shadow); /* Harder shadow */
    display: flex;
    flex-direction: column;
    backdrop-filter: none;
}

/* Left Panel: Student Stats */
.student-panel {
    flex: 1;
    min-width: 300px; /* Prevent too narrow */
    /* Remove align-items: center to let children stretch */
}

.student-avatar {
    width: 140px;
    height: 140px;
    background: #fff;
    border-radius: 50%;
    border: 5px solid var(--pop-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px auto; /* Center avatar specifically */
    font-size: 4rem;
    position: relative;
    box-shadow: 4px 4px 0 var(--pop-yellow);
}

.avatar-mood {
    position: absolute;
    bottom: 0;
    right: 0;
    font-size: 2.5rem;
    background: #fff;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--pop-dark);
}

.stats-list {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 15px;
    width: 100%;
}

.stat-item .label {
    width: 50px;
    font-weight: 900;
    font-size: 1.1rem;
    color: var(--pop-dark);
}

.stat-item .val {
    width: 40px;
    text-align: right;
    font-weight: 900;
    font-size: 1.1rem;
    color: var(--pop-dark);
}

.bar-bg {
    flex: 1; /* Stretch to fill space */
    height: 24px;
    background: #eee;
    border: 3px solid var(--pop-dark);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    box-shadow: inset 2px 2px 5px rgba(0,0,0,0.1);
}

.bar-fill {
    height: 100%;
    border-right: 3px solid var(--pop-dark);
    border-radius: 8px 0 0 8px;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 0; /* Allow 0 width */
}

/* Right Panel: Market */
.market-panel {
    flex: 2;
    display: flex;
    flex-direction: column;
    overflow: hidden; /* Contain scroll */
}

.market-header {
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 3px solid #eee;
}

.market-header h3 {
    font-size: 1.5rem;
    margin-bottom: 5px;
    color: var(--pop-dark);
}

.market-header p {
    color: #666;
    font-size: 0.9rem;
}

.market-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    overflow-y: auto; /* Scrollable area */
    padding: 5px; /* Space for shadows */
    flex: 1; /* Fill available space */
}

.market-card {
    background: #fff;
    border: 3px solid var(--pop-dark);
    border-radius: 20px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
    box-shadow: 4px 4px 0 #eee;
}

.market-card:hover {
    transform: translateY(-4px);
    box-shadow: 6px 6px 0 var(--pop-purple);
    border-color: var(--pop-purple);
}

.card-icon {
    font-size: 2.5rem;
}

.card-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-info h4 {
    font-size: 1.1rem;
    font-weight: 900;
    margin: 0;
    color: var(--pop-dark);
}

.price {
    font-weight: 900;
    color: #E65100;
    background: #FFE0B2;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.9rem;
    border: 2px solid #E65100;
}

.card-desc {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.4;
}

.btn-action-big {
    width: 100%;
    margin-top: 20px;
    padding: 20px;
    background: var(--btn-primary-bg);
    color: #fff;
    border: 4px solid var(--pop-dark);
    border-radius: 20px;
    font-size: 1.6rem;
    font-weight: 900;
    cursor: pointer;
    font-family: inherit;
    box-shadow: 0 8px 0 var(--pop-dark);
    transition: all 0.1s;
    text-transform: uppercase;
    letter-spacing: 2px;
    flex-shrink: 0; 
    animation: pulse 2s infinite; /* Pulse animation */
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

.btn-action-big:hover {
    background: #07e6ac;
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 10px 0 var(--pop-dark);
    animation: none;
}

.btn-action-big:active {
    transform: translateY(6px);
    box-shadow: 0 0 0 var(--pop-dark);
    animation: none;
}

/* --- Scene 2: Game --- */
#scene-game {
    justify-content: center;
    background: rgba(0,0,0,0.5); /* Dim background */
}

.game-hud {
    position: absolute;
    top: 20px;
    width: 800px;
    display: flex;
    justify-content: space-between;
    z-index: 20;
}

.level-badge {
    background: #fff;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: bold;
    border: 2px solid #333;
    box-shadow: 0 4px 0 #333;
    color: #333;
}

.btn-quit {
    background: #FF5252;
    color: white;
    border: 2px solid #333;
    padding: 5px 15px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: bold;
    box-shadow: 0 4px 0 #333;
}
.btn-quit:active { transform: translateY(4px); box-shadow: none; }

.game-viewport {
    position: relative;
    width: 800px;
    height: 450px;
    border: 4px solid #333;
    border-radius: 10px;
    background: #87CEEB; /* Sky Fallback */
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

.control-bar {
    margin-top: 20px;
    display: flex;
    gap: 20px;
}

.key-hint {
    color: #fff;
    background: rgba(0,0,0,0.5);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* --- Modals --- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(8px);
    transition: opacity 0.3s;
}

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

.modal-window {
    background: #fff;
    width: 500px;
    border-radius: 20px;
    border: 4px solid #333;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    overflow: hidden;
    animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes popIn {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-header {
    background: #FFEB3B;
    padding: 15px;
    text-align: center;
    border-bottom: 4px solid #333;
}

.modal-header h2 { margin: 0; color: #333; }

.modal-body {
    padding: 20px;
    color: #333;
}

.control-visuals {
    display: flex;
    justify-content: space-around;
    margin-bottom: 20px;
    background: #f0f0f0;
    padding: 15px;
    border-radius: 10px;
}

.control-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    font-size: 0.8rem;
    font-weight: bold;
}

.key-row { display: flex; gap: 5px; }

.key-cap {
    background: #fff;
    border: 2px solid #ccc;
    border-bottom: 4px solid #999;
    border-radius: 5px;
    padding: 5px 10px;
    font-family: monospace;
    font-weight: bold;
    color: #333;
}

.key-cap.wide { padding: 5px 30px; }

.game-rules {
    list-style: none;
}
.game-rules li {
    margin-bottom: 10px;
    padding: 10px;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-start-level {
    width: 100%;
    padding: 20px;
    background: #4CAF50;
    color: white;
    border: none;
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
}
.btn-start-level:hover { background: #43A047; }

/* Result Overlay */
.game-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    backdrop-filter: blur(5px);
}

.game-overlay.hidden {
    display: none;
}

.result-card {
    background: #fff;
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    border: 4px solid #333;
    animation: popIn 0.5s;
    min-width: 400px;
}

.result-card h2 { color: #FF9800; font-size: 2.5rem; margin-bottom: 20px; }
.result-stats { font-size: 1.2rem; line-height: 1.8; margin-bottom: 30px; color: #333; }

.btn-confirm {
    background: #2196F3;
    color: white;
    border: none;
    padding: 10px 30px;
    border-radius: 20px;
    font-size: 1.2rem;
    cursor: pointer;
    border-bottom: 4px solid #1976D2;
}
.btn-confirm:active { transform: translateY(4px); border-bottom: 0; }

/* Reward Modal Specifics */
.reward-window {
    width: 600px; /* Wider for image */
    text-align: center; /* Center everything */
}

.reward-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.reward-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 2 columns grid */
    gap: 15px;
    width: 100%;
    padding: 15px;
    max-height: 400px;
    overflow-y: auto;
}

/* Special layout for single image */
.reward-gallery.single-mode {
    display: flex;
    justify-content: center;
}

.reward-gallery.single-mode .reward-image {
    width: 100%;
    height: auto;
    max-height: 300px;
    object-fit: contain;
}

/* Hide scrollbar */
.reward-gallery::-webkit-scrollbar {
    width: 8px;
}
.reward-gallery::-webkit-scrollbar-track {
    background: #f1f1f1; 
}
.reward-gallery::-webkit-scrollbar-thumb {
    background: #ccc; 
    border-radius: 4px;
}

.reward-image {
    width: 100%;
    aspect-ratio: 4/3; /* Nice photo ratio */
    object-fit: cover; /* Fill the square nicely */
    border: 4px solid #fff;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.15); /* Softer shadow */
    transition: transform 0.3s ease;
    cursor: pointer;
}

.reward-image:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0,0,0,0.25);
    z-index: 10;
}

/* Specific style for multi-image mode removed, using generic grid */

.reward-text {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--pop-purple);
    text-align: center;
    white-space: pre-line; /* Handle newlines */
}

/* Center the button */
.reward-window .btn-confirm {
    margin: 0 auto;
    display: block;
    margin-bottom: 20px;
}

/* Toast */
.toast {
    background: #333;
    color: #fff;
    padding: 10px 20px;
    border-radius: 5px;
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    font-weight: bold;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}
.toast.hidden { opacity: 0; pointer-events: none; }

/* Audio Button */
.btn-music {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: #fff;
    border: 3px solid var(--pop-dark);
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 2000;
    box-shadow: 0 4px 0 var(--pop-dark);
    transition: all 0.2s;
    display: flex;
    justify-content: center;
    align-items: center;
}

.btn-music:hover { transform: scale(1.1); }
.btn-music:active { transform: scale(0.95); box-shadow: 0 2px 0 var(--pop-dark); }

/* --- Mobile Touch Controls Refined --- */
.touch-controls {
    display: flex; /* Always show for testing/preference */
    position: absolute;
    bottom: 40px; /* More space from bottom */
    left: 50%;
    transform: translateX(-50%); /* Center horizontally */
    width: 90%;
    max-width: 600px;
    justify-content: space-between; /* Spread controls to sides */
    pointer-events: none;
    z-index: 50;
    align-items: flex-end;
}

.touch-btn {
    pointer-events: auto;
    background: rgba(255, 255, 255, 0.2); /* Glassy background */
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    width: 70px;
    height: 70px;
    font-size: 2rem;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    user-select: none;
    touch-action: none;
    backdrop-filter: blur(10px); /* Stronger blur */
    box-shadow: 0 8px 20px rgba(0,0,0,0.15), inset 0 0 10px rgba(255,255,255,0.1);
    transition: all 0.1s;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.touch-btn:active {
    background: rgba(255, 255, 255, 0.4);
    transform: scale(0.9);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

/* D-Pad Container (Left Side) */
.touch-dpad {
    display: flex;
    gap: 20px;
    background: rgba(43, 45, 66, 0.3); /* Dark translucent capsule */
    padding: 10px 20px;
    border-radius: 50px;
    border: 1px solid rgba(255,255,255,0.2);
}

/* Action Button (Right Side) */
.touch-action {
    display: flex;
}

.btn-up {
    width: 90px; /* Distinctive large jump button */
    height: 90px;
    font-size: 2.5rem;
    background: linear-gradient(135deg, rgba(76, 201, 240, 0.6), rgba(67, 97, 238, 0.6)); /* Blue gradient */
    border: 2px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 10px 25px rgba(67, 97, 238, 0.3);
}

.btn-up:active {
    background: linear-gradient(135deg, rgba(76, 201, 240, 0.8), rgba(67, 97, 238, 0.8));
}

/* Media Query for Mobile - Refined */
@media (max-width: 1024px) {
    #scene-lobby {
        display: flex;
        flex-direction: column;
        height: 100vh;
        overflow: hidden;
        padding: 10px;
        gap: 10px;
    }

    .game-top-bar {
        padding: 8px;
        flex-shrink: 0;
        width: 100%;
    }

    .lobby-content {
        flex-direction: column;
        padding-bottom: 0;
        flex: 1; 
        overflow: hidden; 
        gap: 15px; /* Increase gap slightly */
        width: 100%;
        align-items: center; /* Center align items to ensure same width */
    }

    /* Common width for panels */
    .panel {
        width: 95%; /* Use 95% width for both panels */
        flex-shrink: 0;
        box-sizing: border-box; /* Include padding in width */
        padding: 10px; /* Override desktop 25px padding globally for mobile panels */
        border-width: 3px; /* Thinner border */
        border-radius: 15px; /* Smaller radius */
        box-shadow: 4px 4px 0 var(--panel-shadow); /* Smaller shadow */
    }

    /* Student Panel - Takes ~30-35% */
    .student-panel {
        width: 100%;
        margin: 0;
        
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 15px;
        padding: 15px;
        
        /* Explicit height allocation */
        flex: 3; /* Ratio 3 */
        min-height: 0; /* Allow flex to shrink if needed */
        
        background: #fff;
    }

    /* Market Panel - Takes ~65-70% & Full Width */
    .market-panel {
        width: 100%; /* Ensure full width */
        margin: 0;
        
        flex: 7; /* Ratio 7 */
        height: auto; 
        display: flex;
        flex-direction: column;
        overflow: hidden;
        padding: 15px;
        
        /* Remove rounded corners at top to connect with panel above if desired, 
           or keep separate. Let's keep them separate but tight. */
        border-radius: 15px 15px 0 0; /* Flat bottom */
        border-bottom: none;
    }

    .market-header {
        flex-shrink: 0;
        margin-bottom: 10px;
        padding-bottom: 5px;
    }

    .market-grid {
        display: grid;
        grid-template-columns: 1fr; /* Single column */
        gap: 15px;
        overflow-y: auto; /* Scroll ONLY items */
        flex: 1; /* Take available space */
        padding: 5px; /* Space for shadows */
        margin-bottom: 10px;
    }

    .btn-action-big {
        flex-shrink: 0; /* Don't shrink */
        margin-top: 0;
        margin-bottom: 0;
        width: 100%;
        padding: 15px;
        font-size: 1.2rem; /* Slightly smaller text for mobile */
    }
    
    /* --- Scene 2: Game Mobile Fix --- */
    #scene-game {
        position: fixed; /* Force fixed full screen */
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        padding: 0;
        display: flex;
        flex-direction: column;
        justify-content: center; /* Center Vertically */
        align-items: center;     /* Center Horizontally */
        background: #2B2D42; /* Dark background */
        overflow: hidden;
    }

    .game-hud {
        position: absolute;
        top: 10px;
        left: 0;
        width: 100%;
        padding: 0 15px;
        z-index: 100;
        justify-content: space-between;
    }

    .game-viewport {
        /* Full width, aligned left */
        width: 100%; 
        margin: 0; 
        
        /* Force height to be larger, ignoring aspect ratio */
        height: 60vh; /* Taller */
        aspect-ratio: auto; 
        
        border: none;
        border-radius: 0;
        box-shadow: 0 10px 30px rgba(0,0,0,0.5);
        background: #87CEEB;
        position: relative;
        overflow-x: hidden; /* Prevent horizontal scroll bar */
    }

    /* Make canvas wider than the screen to stretch horizontally */
    #gameCanvas {
        width: 100%; /* Match parent width exactly */
        margin-left: 0; /* Reset margin */
        height: 100%;
        object-fit: fill; 
        transform: scaleX(1.3); /* Only stretch via transform */
        transform-origin: left center; /* STRICTLY anchor to left edge */
    }

    /* Controls overlay on bottom of screen, not viewport */
    .touch-controls {
        position: absolute;
        bottom: 20px;
        left: 0;
        width: 100%;
        padding: 0 30px;
        max-width: none;
        transform: none;
        z-index: 200;
    }
    
    /* Hide Student Panel Title on Mobile to prevent squashing */
    .student-panel h3 {
        display: none !important;
    }
}