/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --bg-color: #0f172a;
    --bg-light: #1e293b;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 3rem;
}

header h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Section styles */
section {
    background: var(--bg-light);
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

section h2 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Member Grid */
.member-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: 0.75rem;
}

.member-btn {
    width: 100%;
    aspect-ratio: 1;
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.member-btn:hover:not(:disabled) {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.member-btn.selected {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.member-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background: var(--border-color);
}

.member-btn.completed {
    background: var(--success-color);
    border-color: var(--success-color);
    opacity: 0.7;
}

/* Slot Machine */
.slot-machine-section {
    text-align: center;
}

.selected-member {
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: 0.75rem;
    display: inline-block;
}

.selected-member .label {
    color: var(--text-muted);
    margin-right: 0.5rem;
}

.selected-member .value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--secondary-color);
}

.slot-machine {
    margin: 2rem auto;
    max-width: 300px;
}

.slot-window {
    background: linear-gradient(180deg, #000 0%, #1a1a2e 50%, #000 100%);
    border: 4px solid var(--secondary-color);
    border-radius: 1rem;
    height: 120px;
    overflow: hidden;
    position: relative;
    box-shadow:
        inset 0 0 30px rgba(0,0,0,0.5),
        0 0 20px rgba(245, 158, 11, 0.3);
}

.slot-window::before,
.slot-window::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 30px;
    z-index: 10;
    pointer-events: none;
}

.slot-window::before {
    top: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.8), transparent);
}

.slot-window::after {
    bottom: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
}

.slot-reel {
    display: flex;
    flex-direction: column;
    transition: transform 0.1s ease-out;
}

.slot-item {
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: bold;
    color: var(--text-color);
    text-shadow: 0 0 10px var(--primary-color);
}

.slot-result {
    margin-top: 1rem;
    font-size: 1.5rem;
    font-weight: bold;
    min-height: 2rem;
    color: var(--success-color);
}

/* Spin Button */
.spin-button {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    padding: 1rem 3rem;
    font-size: 1.5rem;
    font-weight: bold;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.spin-button:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.spin-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.spin-button.spinning {
    animation: pulse 0.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Month Status */
.month-status {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.month-card {
    background: var(--bg-color);
    border-radius: 0.75rem;
    padding: 1rem;
    text-align: center;
    border: 1px solid var(--border-color);
}

.month-card .month-name {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.month-card .month-count {
    font-size: 2rem;
    font-weight: bold;
}

.month-card .month-target {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.month-card .member-list {
    margin-top: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Footer */
footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.admin-link, .back-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s;
}

.admin-link:hover, .back-link:hover {
    color: var(--secondary-color);
}

/* ========== Admin Page Styles ========== */
.admin-page section {
    margin-bottom: 2rem;
}

/* Summary Cards */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.summary-card {
    background: var(--bg-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    text-align: center;
    border: 1px solid var(--border-color);
}

.summary-card .card-title {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.summary-card .card-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.summary-card .card-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Result Table */
.table-container {
    overflow-x: auto;
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-color);
    border-radius: 0.75rem;
    overflow: hidden;
}

.result-table th,
.result-table td {
    padding: 1rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.result-table th {
    background: var(--primary-dark);
    font-weight: bold;
    color: white;
}

.result-table tr:hover {
    background: rgba(99, 102, 241, 0.1);
}

.result-table td {
    font-size: 1.1rem;
    font-weight: 500;
}

/* Member Status Grid */
.member-status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 0.75rem;
}

.member-status-item {
    background: var(--bg-color);
    border-radius: 0.5rem;
    padding: 0.75rem;
    text-align: center;
    border: 1px solid var(--border-color);
}

.member-status-item .member-name {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 0.25rem;
}

.member-status-item .member-month {
    font-size: 0.85rem;
    color: var(--success-color);
}

.member-status-item.pending .member-month {
    color: var(--text-muted);
}

/* Admin Actions */
.admin-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    background: transparent;
    border: none;
    padding: 0;
}

.action-button {
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: bold;
    border: none;
    border-radius: 0.75rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.download-btn {
    background: var(--success-color);
    color: white;
}

.download-btn:hover {
    background: #059669;
    transform: translateY(-2px);
}

.reset-btn {
    background: var(--danger-color);
    color: white;
}

.reset-btn:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

.backup-btn {
    background: var(--primary-color);
    color: white;
}

.backup-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.75rem;
    }

    .member-grid {
        grid-template-columns: repeat(6, 1fr);
    }

    .spin-button {
        padding: 0.75rem 2rem;
        font-size: 1.25rem;
    }

    .month-status {
        grid-template-columns: repeat(3, 1fr);
    }

    .admin-actions {
        flex-direction: column;
    }

    .action-button {
        width: 100%;
        justify-content: center;
    }
}

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

section {
    animation: fadeIn 0.5s ease-out;
}

/* Confetti animation container */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    animation: confetti-fall 3s ease-out forwards;
}

@keyframes confetti-fall {
    0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}