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

body {
    font-family: 'Outfit', sans-serif;
    background-color: #050505;
    color: #ffffff;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    position: relative;
}

.bg-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
}

.bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
}

.bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, #050505 80%);
}

.container {
    width: 100%;
    max-width: 650px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    z-index: 1;
}

header {
    text-align: center;
    animation: fadeInDown 1.2s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.logo-area {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.logo-icon {
    font-size: 2rem;
    animation: pulseGlow 2s infinite alternate;
}

h1 {
    font-family: 'Cinzel', serif;
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: 4px;
    color: #ffffff;
    text-shadow: 0 4px 15px rgba(0,0,0,0.5);
}

.gold-text {
    background: linear-gradient(to right, #bf953f, #fcf6ba, #b38728, #fbf5b7, #aa771c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-transform: uppercase;
}

header p {
    font-size: 1.1rem;
    color: #a8a8a8;
    font-weight: 300;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.glass-panel {
    background: rgba(15, 15, 20, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    padding: 3.5rem 2rem;
    box-shadow: 
        0 20px 50px rgba(0, 0, 0, 0.5),
        inset 0 0 20px rgba(212, 175, 55, 0.05);
    display: flex;
    flex-direction: column;
    gap: 2rem;
    transform: translateY(20px);
    opacity: 0;
    animation: slideUp 1s 0.3s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.ball-container {
    min-height: 120px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.2rem;
    perspective: 1000px;
}

.placeholder {
    color: #7a7a7a;
    font-size: 1.1rem;
    text-align: center;
    font-weight: 300;
    letter-spacing: 1px;
}

.ball {
    width: 65px;
    height: 65px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.6rem;
    font-weight: 700;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
    position: relative;
    /* 3D Glass Sphere Effect */
    box-shadow: 
        inset -8px -8px 15px rgba(0,0,0,0.6),
        inset 8px 8px 15px rgba(255,255,255,0.4),
        0 10px 20px rgba(0,0,0,0.5),
        0 0 15px currentColor;
    opacity: 0;
    transform: scale(0.5) translateZ(-100px);
    animation: pop3D 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.ball::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 15px;
    width: 20px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.8);
    transform: rotate(-45deg);
    filter: blur(1px);
}

.ball.winner {
    animation: pulseWinner 1.5s infinite alternate;
}

/* 프리미엄 컬러 세트 */
.color-gold { background: radial-gradient(circle at 30% 30%, #ffd700, #b8860b); color: rgba(255,215,0,0.5); }
.color-ruby { background: radial-gradient(circle at 30% 30%, #ff4b4b, #8b0000); color: rgba(255,75,75,0.5); }
.color-sapphire { background: radial-gradient(circle at 30% 30%, #4b9fff, #00008b); color: rgba(75,159,255,0.5); }
.color-emerald { background: radial-gradient(circle at 30% 30%, #50c878, #006400); color: rgba(80,200,120,0.5); }
.color-amethyst { background: radial-gradient(circle at 30% 30%, #b163ff, #4b0082); color: rgba(177,99,255,0.5); }

.message-container {
    text-align: center;
    min-height: 30px;
}

.success-message {
    font-size: 1.3rem;
    font-weight: 500;
    color: #d4af37;
    letter-spacing: 1px;
    opacity: 0;
    animation: fadeIn 1s forwards;
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

.controls {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

.premium-btn {
    position: relative;
    padding: 1.2rem 4rem;
    font-size: 1.3rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(180deg, #2a2a2a 0%, #111 100%);
    border: 1px solid #444;
    border-radius: 50px;
    cursor: pointer;
    outline: none;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 
        0 10px 20px rgba(0,0,0,0.4),
        inset 0 2px 0 rgba(255,255,255,0.1);
}

.premium-btn::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #bf953f, #fcf6ba, #b38728, #fbf5b7, #aa771c);
    z-index: -1;
    border-radius: 50px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.premium-btn:hover {
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 15px 25px rgba(212, 175, 55, 0.2);
}

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

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

.btn-text {
    letter-spacing: 2px;
}

.btn-flare {
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transform: skewX(-20deg);
}

.premium-btn:hover .btn-flare {
    animation: flareSlide 1.5s infinite;
}

.premium-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}
.premium-btn:disabled::before {
    opacity: 0;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-40px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pop3D {
    0% { opacity: 0; transform: scale(0) translateZ(-200px) rotateX(45deg); }
    60% { opacity: 1; transform: scale(1.1) translateZ(50px) rotateX(-10deg); }
    100% { opacity: 1; transform: scale(1) translateZ(0) rotateX(0); }
}

@keyframes pulseGlow {
    from { filter: drop-shadow(0 0 5px rgba(212, 175, 55, 0.5)); }
    to { filter: drop-shadow(0 0 15px rgba(212, 175, 55, 1)); }
}

@keyframes pulseWinner {
    from { box-shadow: 0 0 10px currentColor; transform: scale(1); }
    to { box-shadow: 0 0 30px currentColor; transform: scale(1.05); }
}

@keyframes flareSlide {
    0% { left: -100%; }
    100% { left: 200%; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 480px) {
    .container { padding: 1.5rem; gap: 2rem; }
    h1 { font-size: 2.5rem; }
    .glass-panel { padding: 2.5rem 1rem; }
    .ball { width: 55px; height: 55px; font-size: 1.3rem; }
}