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

body {
    font-family: 'Apple SD Gothic Neo', 'Malgun Gothic', 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 30px 16px;
}

.container {
    background: rgba(255, 255, 255, 0.97);
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    width: 100%;
    max-width: 520px;
    overflow: hidden;
}

/* Header */
.header {
    background: linear-gradient(135deg, #ff6b35, #f7c59f);
    padding: 32px 24px 28px;
    text-align: center;
    color: white;
}

.logo {
    font-size: 3em;
    margin-bottom: 8px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.header h1 {
    font-size: 1.9em;
    font-weight: 800;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

.subtitle {
    margin-top: 6px;
    font-size: 0.95em;
    opacity: 0.9;
}

/* Controls */
.controls {
    padding: 24px;
    border-bottom: 1px solid #f0f0f0;
}

.game-count-selector label {
    display: block;
    font-size: 0.85em;
    color: #888;
    margin-bottom: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.count-buttons {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.count-btn {
    flex: 1;
    padding: 10px 0;
    border: 2px solid #e0e0e0;
    background: white;
    border-radius: 10px;
    font-size: 0.9em;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    transition: all 0.2s;
}

.count-btn:hover {
    border-color: #ff6b35;
    color: #ff6b35;
}

.count-btn.active {
    background: #ff6b35;
    border-color: #ff6b35;
    color: white;
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.35);
}

#draw-button {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #ff6b35, #ee5a24);
    color: white;
    border: none;
    border-radius: 14px;
    font-size: 1.15em;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    letter-spacing: -0.3px;
}

#draw-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.5);
}

#draw-button:active {
    transform: translateY(0);
}

#draw-button.loading {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-icon {
    font-size: 1.1em;
}

/* Results */
#results-area {
    padding: 24px;
    min-height: 120px;
}

.placeholder {
    text-align: center;
    color: #bbb;
    padding: 20px 0;
}

.placeholder-icon {
    font-size: 2.5em;
    margin-bottom: 10px;
    opacity: 0.5;
}

.placeholder p {
    font-size: 0.95em;
}

.game-set {
    margin-bottom: 20px;
    animation: slideIn 0.4s ease forwards;
    opacity: 0;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.game-label {
    font-size: 0.8em;
    color: #999;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.balls-row {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.ball {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.15em;
    font-weight: 800;
    color: white;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2), inset 0 -3px 6px rgba(0,0,0,0.15), inset 0 3px 6px rgba(255,255,255,0.3);
    opacity: 0;
    transform: scale(0.5) rotate(-180deg);
    transition: opacity 0.3s, transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
    position: relative;
}

.ball::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 12px;
    width: 12px;
    height: 8px;
    background: rgba(255,255,255,0.4);
    border-radius: 50%;
    transform: rotate(-30deg);
}

.ball.show {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

/* Ball colors by number range */
.ball.yellow, .ball[data-range="1"] { background: radial-gradient(circle at 35% 35%, #ffd44d, #f5a623); }
.ball.blue, .ball[data-range="2"] { background: radial-gradient(circle at 35% 35%, #5dade2, #2471a3); }
.ball.red, .ball[data-range="3"] { background: radial-gradient(circle at 35% 35%, #e74c3c, #b03a2e); }
.ball.gray, .ball[data-range="4"] { background: radial-gradient(circle at 35% 35%, #aab7b8, #717d7e); }
.ball.green, .ball[data-range="5"] { background: radial-gradient(circle at 35% 35%, #2ecc71, #1a8a4a); }

/* Legend */
.legend {
    padding: 16px 24px 20px;
    border-top: 1px solid #f0f0f0;
    text-align: center;
}

.legend p {
    font-size: 0.78em;
    color: #aaa;
    margin-bottom: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.legend-items {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.legend-items .ball {
    width: 44px;
    height: 44px;
    font-size: 0.72em;
    opacity: 1;
    transform: none;
    cursor: default;
}

/* History */
.history-section {
    border-top: 1px solid #f0f0f0;
    padding: 20px 24px;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.history-header h3 {
    font-size: 1em;
    color: #444;
    font-weight: 700;
}

#clear-history {
    font-size: 0.8em;
    color: #aaa;
    background: none;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    padding: 4px 10px;
    cursor: pointer;
    transition: all 0.2s;
}

#clear-history:hover {
    color: #e74c3c;
    border-color: #e74c3c;
}

.empty-history {
    text-align: center;
    color: #ccc;
    font-size: 0.9em;
    padding: 12px 0;
}

.history-item {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 10px;
    animation: slideIn 0.3s ease forwards;
}

.history-meta {
    font-size: 0.75em;
    color: #aaa;
    margin-bottom: 8px;
}

.history-balls {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.history-balls .ball {
    width: 36px;
    height: 36px;
    font-size: 0.85em;
    opacity: 1;
    transform: none;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15), inset 0 -2px 4px rgba(0,0,0,0.1), inset 0 2px 4px rgba(255,255,255,0.25);
}

.history-balls .ball::before {
    top: 5px;
    left: 8px;
    width: 8px;
    height: 5px;
}