:root {
    --bg-color: #0b0f19;
    --panel-bg: rgba(20, 25, 40, 0.6);
    --panel-border: rgba(255, 255, 255, 0.1);
    --primary-color: #00f2fe;
    --primary-glow: rgba(0, 242, 254, 0.6);
    --secondary-color: #4facfe;
    --danger-color: #ff0844;
    --danger-glow: rgba(255, 8, 68, 0.6);
    --prize-color: #f6d365;
    --prize-glow: rgba(246, 211, 101, 0.6);
    --text-color: #ffffff;
    --text-muted: #a0a5b1;
}

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

body {
    font-family: 'Pretendard', sans-serif;
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(79, 172, 254, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 85% 30%, rgba(0, 242, 254, 0.15) 0%, transparent 50%);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    overflow-y: auto;
}

.app-container {
    display: flex;
    gap: 30px;
    width: 95%;
    max-width: 1400px;
    height: 90vh;
}

.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--panel-border);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

/* Left Side Controls */
.control-panel {
    flex: 0 0 350px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.header h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.highlight {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header p {
    color: var(--text-muted);
    font-size: 1.2rem;
    margin-bottom: 40px;
}

.status-box {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 15px 30px;
    margin-bottom: 40px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.highlight-text {
    color: var(--prize-color);
    font-weight: 800;
    font-size: 1.5rem;
    text-shadow: 0 0 10px var(--prize-glow);
}

.draw-btn {
    position: relative;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    font-size: 1.5rem;
    font-weight: 800;
    padding: 20px 50px;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 0 20px var(--primary-glow);
    width: 100%;
}

.draw-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--primary-glow);
}

.draw-btn:active {
    transform: translateY(2px);
}

.draw-btn:disabled {
    background: #444;
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
}

.result-display {
    margin-top: 40px;
    padding: 25px;
    border-radius: 16px;
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--panel-border);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

.result-display.show {
    opacity: 1;
    transform: translateY(0);
}

.result-display.prize {
    border-color: var(--prize-color);
    box-shadow: 0 0 20px var(--prize-glow);
}

.result-display.penalty {
    border-color: var(--danger-color);
    box-shadow: 0 0 20px var(--danger-glow);
}

.result-text {
    font-size: 1.8rem;
    font-weight: 800;
    margin-top: 10px;
}

.prize .result-text { color: var(--prize-color); }
.penalty .result-text { color: var(--danger-color); }

/* Right Side Grid */
.grid-panel {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.items-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(4, 1fr);
    gap: 15px;
    width: 100%;
    height: 100%;
}

.item-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-muted);
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.item-card.revealed {
    cursor: default;
}

/* Card content (hidden initially) */
.item-card .content {
    opacity: 0;
    font-size: 1.2rem;
    text-align: center;
    padding: 10px;
    word-break: keep-all;
    transition: opacity 0.3s;
}

.item-card.revealed .content {
    opacity: 1;
}

.item-card.revealed .question-mark {
    opacity: 0;
}

.question-mark {
    position: absolute;
    font-size: 3rem;
    transition: opacity 0.3s;
}

/* Highlight effect during roulette */
.item-card.highlight {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--primary-color);
    box-shadow: 0 0 15px var(--primary-glow);
    transform: scale(1.05);
    z-index: 10;
}

/* Result styles for revealed cards */
.item-card.revealed.prize-card {
    background: rgba(246, 211, 101, 0.1);
    border-color: var(--prize-color);
    color: var(--prize-color);
    box-shadow: 0 0 15px var(--prize-glow);
}

.item-card.revealed.penalty-card {
    background: rgba(255, 8, 68, 0.1);
    border-color: var(--danger-color);
    color: var(--danger-color);
    box-shadow: 0 0 15px var(--danger-glow);
}

.hidden {
    display: none !important;
}

@media (max-width: 900px) {
    .app-container {
        flex-direction: column;
        height: auto;
        padding: 20px 0;
    }
    
    .control-panel {
        flex: none;
        padding: 30px;
    }
    
    .grid-panel {
        min-height: 500px;
    }
    
    .items-grid {
        grid-template-columns: repeat(4, 1fr);
        grid-template-rows: repeat(8, 1fr);
    }
}