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

:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #ec4899;
    --secondary-dark: #db2777;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-gold: linear-gradient(135deg, #ffd89b 0%, #19547b 100%);

    /* Dark theme colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.4);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

.background-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.15) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: fadeInDown 0.6s ease;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    font-size: 3rem;
    animation: bounce 2s infinite;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* User Section */
.user-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-name {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
}

.logout-button {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid var(--danger);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    transition: all var(--transition-normal);
    font-family: 'Inter', sans-serif;
}

.logout-button:hover {
    background: var(--danger);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.logout-button:active {
    transform: translateY(0);
}

.logout-icon {
    font-size: 1rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 500;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.6s ease 0.2s both;
}

.stat-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.stat-card:hover::before {
    opacity: 0.1;
}

.stat-icon {
    font-size: 2.5rem;
    position: relative;
    z-index: 1;
}

.stat-info {
    flex: 1;
    position: relative;
    z-index: 1;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Spin Section */
.spin-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    animation: fadeInUp 0.6s ease 0.4s both;
}

.wheel-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.wheel {
    position: relative;
    width: 280px;
    height: 280px;
    margin: 0 auto;
}

.wheel-inner {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
    transition: transform var(--transition-slow);
    box-shadow: var(--shadow-lg);
}

.wheel.spinning .wheel-inner {
    animation: spin 2s cubic-bezier(0.17, 0.67, 0.12, 0.99);
}

.wheel-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--gradient-primary);
    filter: blur(30px);
    opacity: 0.5;
    z-index: 1;
    animation: pulse 2s infinite;
}

.amount-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
}

.amount-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.amount-value {
    font-size: 2rem;
    font-weight: 800;
    color: white;
}

.spin-button {
    background: var(--gradient-secondary);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    border-radius: var(--radius-lg);
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.spin-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.spin-button:hover::before {
    width: 300px;
    height: 300px;
}

.spin-button:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.spin-button:active {
    transform: scale(0.98);
}

.spin-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.button-text,
.button-icon {
    position: relative;
    z-index: 1;
}

.button-icon {
    font-size: 1.5rem;
}

.spin-info {
    margin-top: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Custom Amount Section */
.custom-amount-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
    animation: fadeInUp 0.6s ease 0.5s both;
}

.section-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.custom-input-container {
    display: flex;
    gap: var(--spacing-md);
    max-width: 600px;
    margin: 0 auto;
}

.custom-input {
    flex: 1;
    background: var(--bg-tertiary);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
    font-size: 1rem;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    transition: all var(--transition-normal);
}

.custom-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    background: var(--bg-secondary);
}

.custom-input::placeholder {
    color: var(--text-muted);
    font-weight: 500;
}

.custom-button {
    background: var(--gradient-success);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.custom-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.custom-button:hover::before {
    width: 300px;
    height: 300px;
}

.custom-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.custom-button:active {
    transform: translateY(0);
}

/* Progress Section */
.progress-section {
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.6s ease 0.6s both;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-secondary);
}

.progress-bar {
    height: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-success);
    border-radius: var(--radius-lg);
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

/* Numbers Section */
.numbers-section {
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.6s ease 0.8s both;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.numbers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: var(--spacing-xs);
    max-height: 400px;
    overflow-y: auto;
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.numbers-grid::-webkit-scrollbar {
    width: 8px;
}

.numbers-grid::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.numbers-grid::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-sm);
}

.number-item {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
    transition: all var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.number-item:hover {
    transform: scale(1.05);
    border-color: var(--primary);
}

.number-item.used {
    background: var(--bg-primary);
    color: var(--text-muted);
    opacity: 0.4;
    text-decoration: line-through;
}

/* History Section */
.history-section {
    animation: fadeInUp 0.6s ease 1s both;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.clear-button {
    background: transparent;
    color: var(--danger);
    border: 1px solid var(--danger);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.clear-button:hover {
    background: var(--danger);
    color: white;
    transform: translateY(-2px);
}

.history-list {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    max-height: 500px;
    overflow-y: auto;
}

.history-list::-webkit-scrollbar {
    width: 8px;
}

.history-list::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.history-list::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-sm);
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-lg);
    font-style: italic;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.05);
    animation: slideInRight 0.4s ease;
}

.history-item:hover {
    transform: translateX(4px);
    border-color: var(--primary);
}

.history-item:last-child {
    margin-bottom: 0;
}

.history-date {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.history-amount {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--success);
}

/* Export/Import Section */
.export-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
    animation: fadeInUp 0.6s ease 1.2s both;
}

.export-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.export-button {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.export-button.secondary {
    background: var(--gradient-gold);
}

.export-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.export-button:hover::before {
    width: 300px;
    height: 300px;
}

.export-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.export-button:active {
    transform: translateY(0);
}

.import-container {
    display: flex;
    justify-content: center;
}

.import-label {
    background: var(--gradient-success);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.import-label::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.import-label:hover::before {
    width: 300px;
    height: 300px;
}

.import-label:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.import-label:active {
    transform: translateY(0);
}


/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(1080deg);
    }
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.5;
    }

    50% {
        opacity: 0.8;
    }
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }

    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .user-section {
        width: 100%;
        justify-content: center;
    }

    .header h1 {
        font-size: 2rem;
    }

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

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .wheel {
        width: 240px;
        height: 240px;
    }

    .amount-value {
        font-size: 1.5rem;
    }

    .spin-button {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }

    .numbers-grid {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    }

    .custom-input-container {
        flex-direction: column;
    }

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

/* Hide export section */
.export-section {
    display: none;
}