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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #1f2937;
    --dark-light: #374151;
    --light: #f9fafb;
    --border: #e5e7eb;
    --text: #111827;
    --text-muted: #6b7280;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--light);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background: white;
    box-shadow: var(--shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-dark {
    background: var(--dark);
    color: white;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h1 {
    font-size: 1.5rem;
    color: var(--primary);
}

.navbar-dark .nav-brand h1 {
    color: white;
}

.nav-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.user-info {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.navbar-dark .user-info {
    color: #d1d5db;
}

/* Buttons */
.btn {
    padding: 0.5rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
}

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

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

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

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

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.navbar-dark .btn-outline {
    border-color: white;
    color: white;
}

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

.navbar-dark .btn-outline:hover {
    background: white;
    color: var(--dark);
}

.btn-block {
    width: 100%;
    display: block;
}

.btn-large {
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.4rem 1rem;
    font-size: 0.875rem;
}

.btn-xs {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    min-height: 100vh;
}

.hero-content {
    text-align: center;
    padding: 8rem 0 4rem;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Features Section */
.features-section {
    padding: 4rem 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.feature-card p {
    color: var(--text-muted);
}

/* Auth Container */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 2rem;
}

.auth-box {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-width: 450px;
    width: 100%;
    padding: 2.5rem;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.auth-header p {
    color: var(--text-muted);
}

.auth-form {
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark);
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
}

.auth-footer {
    text-align: center;
}

.auth-footer p {
    margin: 0.5rem 0;
    color: var(--text-muted);
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* Dashboard */
.dashboard-container {
    padding: 2rem 20px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    font-size: 3rem;
}

.stat-info h3 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.stat-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 968px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

.dashboard-section {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.dashboard-section h2 {
    margin-bottom: 1.5rem;
    color: var(--dark);
}

/* Tasks List */
.tasks-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.task-card {
    background: var(--light);
    padding: 1rem;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    transition: transform 0.2s ease;
}

.task-card:hover {
    transform: translateX(5px);
}

.task-info h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    color: var(--dark);
}

.task-info p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.task-reward {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.task-reward .coins {
    font-weight: 600;
    color: var(--warning);
    font-size: 1.1rem;
}

.buy-coins-section {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 12px;
    color: white;
}

.buy-coins-section h3 {
    margin-bottom: 1rem;
}

/* Transactions */
.transactions-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.transaction-item {
    background: var(--light);
    padding: 1rem;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.transaction-info strong {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--dark);
}

.transaction-info small {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.transaction-amount {
    font-weight: 600;
    font-size: 1.1rem;
}

.transaction-amount.earn,
.transaction-amount.bonus {
    color: var(--secondary);
}

.transaction-amount.purchase {
    color: var(--danger);
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.pricing-card {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 2rem;
    text-align: center;
    position: relative;
    transition: transform 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.pricing-popular {
    border: 3px solid var(--primary);
    transform: scale(1.05);
}

.pricing-badge {
    background: var(--primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1rem;
}

.pricing-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}

.pricing-features li {
    padding: 0.5rem 0;
    color: var(--text);
}

/* Admin Table */
.table-container {
    background: white;
    border-radius: 12px;
    overflow-x: auto;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table thead {
    background: var(--dark);
    color: white;
}

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

.admin-table tbody tr:hover {
    background: var(--light);
}

.admin-table tbody tr:last-child td {
    border-bottom: none;
}

/* Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-admin {
    background: #fee2e2;
    color: #991b1b;
}

.badge-user {
    background: #dbeafe;
    color: #1e40af;
}

.badge-earn,
.badge-bonus {
    background: #d1fae5;
    color: #065f46;
}

.badge-purchase {
    background: #fee2e2;
    color: #991b1b;
}

/* Utilities */
.text-muted {
    color: var(--text-muted);
}

.text-center {
    text-align: center;
}

/* Footer */
.footer {
    background: var(--dark);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

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

    .nav-links {
        flex-direction: column;
        gap: 0.5rem;
    }

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

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

    .pricing-popular {
        transform: scale(1);
    }

    .task-card {
        flex-direction: column;
        text-align: center;
    }
}