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

:root {
    --primary: #5865F2;
    --primary-dark: #4752C4;
    --primary-light: #7289DA;
    --success: #25D366;
    --danger: #EF4444;
    --warning: #F59E0B;
    --info: #3B82F6;
    --dark: #111827;
    --gray: #6B7280;
    --light-gray: #F3F4F6;
    --white: #FFFFFF;
    --border: #E5E7EB;
    --shadow: rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--dark);
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: var(--white);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.logo-circle {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 8px 20px rgba(88, 101, 242, 0.4);
}

.logo-text {
    color: var(--white);
    font-size: 36px;
    font-weight: 900;
}

.login-header h1 {
    font-size: 28px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 8px;
}

.login-header p {
    color: var(--gray);
    font-size: 14px;
}

.login-form {
    margin-top: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark);
    font-size: 14px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s;
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(88, 101, 242, 0.1);
}

.login-footer {
    margin-top: 24px;
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    color: var(--gray);
    font-size: 13px;
}

/* Navbar */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 10px var(--shadow);
    padding: 16px 0;
    margin-bottom: 30px;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
}

.logo-icon {
    font-size: 24px;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--gray);
}

.btn-logout {
    padding: 8px 16px;
    background: var(--danger);
    color: var(--white);
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-logout:hover {
    background: #DC2626;
    transform: translateY(-1px);
}

.btn-back {
    padding: 8px 16px;
    background: var(--light-gray);
    color: var(--dark);
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-back:hover {
    background: var(--border);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px 40px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 16px;
}

.page-header h1 {
    font-size: 32px;
    font-weight: 800;
    color: var(--white);
}

.search-box {
    display: flex;
    gap: 8px;
}

.search-box input {
    padding: 10px 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-size: 14px;
    min-width: 250px;
}

.search-box input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.search-box input:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.15);
}

.search-box button {
    padding: 10px 20px;
    background: var(--white);
    color: var(--primary);
    border: none;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.search-box button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--white);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 4px 12px var(--shadow);
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.stat-icon {
    font-size: 40px;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light-gray);
    border-radius: 16px;
}

.stat-success .stat-icon {
    background: rgba(37, 211, 102, 0.1);
}

.stat-info .stat-pro .stat-icon {
    background: rgba(88, 101, 242, 0.1);
}

.stat-info {
    flex: 1;
}

.stat-card.stat-info .stat-icon {
    background: rgba(59, 130, 246, 0.1);
}

.stat-warning .stat-icon {
    background: rgba(245, 158, 11, 0.1);
}

.stat-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--dark);
    line-height: 1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--gray);
    font-weight: 500;
}

/* Table */
.table-container {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 12px var(--shadow);
}

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

.users-table thead {
    background: var(--light-gray);
}

.users-table th {
    padding: 16px;
    text-align: left;
    font-weight: 700;
    color: var(--dark);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.users-table td {
    padding: 16px;
    border-top: 1px solid var(--border);
    font-size: 14px;
}

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

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-none {
    background: #E5E7EB;
    color: #6B7280;
}

.badge-basic {
    background: #FEF3C7;
    color: #92400E;
}

.badge-pro {
    background: #DBEAFE;
    color: #1E40AF;
}

.badge-success {
    background: #D1FAE5;
    color: #065F46;
}

.badge-danger {
    background: #FEE2E2;
    color: #991B1B;
}

.token-count {
    font-size: 12px;
    color: var(--gray);
}

.text-muted {
    color: var(--gray);
    font-style: italic;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 10px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(88, 101, 242, 0.4);
}

.btn-secondary {
    background: var(--light-gray);
    color: var(--dark);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-block {
    width: 100%;
    padding: 14px;
    font-size: 16px;
}

/* Edit Card */
.edit-card {
    background: var(--white);
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 4px 12px var(--shadow);
    max-width: 800px;
}

.form-section {
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}

.form-section:last-child {
    border-bottom: none;
}

.form-section h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-hint {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--gray);
}

.tokens-info {
    display: flex;
    gap: 24px;
}

.token-item {
    padding: 12px 16px;
    background: var(--light-gray);
    border-radius: 8px;
    font-size: 14px;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 32px;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-error {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FCA5A5;
}

.message {
    margin-top: 20px;
    padding: 12px 16px;
    border-radius: 10px;
    display: none;
}

.message-success {
    background: #D1FAE5;
    color: #065F46;
    border: 1px solid #6EE7B7;
}

.message-error {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FCA5A5;
}

/* Error Page */
.error-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.error-card {
    background: var(--white);
    border-radius: 20px;
    padding: 60px 40px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 500px;
}

.error-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.error-card h1 {
    font-size: 32px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
}

.error-card p {
    color: var(--gray);
    font-size: 16px;
    margin-bottom: 32px;
}

/* Responsive */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .search-box {
        width: 100%;
    }
    
    .search-box input {
        flex: 1;
        min-width: 0;
    }
    
    .users-table {
        font-size: 12px;
    }
    
    .users-table th,
    .users-table td {
        padding: 10px;
    }
}