/* Base styles */
:root {
    --primary-color: #007bff;
    --success-color: #28a745;
    --warning-color: #ff9800;
    --danger-color: #dc3545;
    --background-color: #f0f2f5;
    --text-color: #2c3e50;
    --white: #ffffff;
    --gray-light: #f8f9fa;
}

body {
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    padding: 20px;
    background-color: var(--background-color);
    color: var(--text-color);
}

/* Login page */
.login-container {
    max-width: 400px;
    margin: 50px auto;
    padding: 30px;
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.error {
    color: var(--danger-color);
    margin-bottom: 15px;
}

input[type="text"],
input[type="password"],
input[type="email"]  {
    width: 94%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    width: 100%;
    padding: 10px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

/* Dashboard */
.dashboard-container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

/* Analytics specific styles */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.chart-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
    justify-content: center;
}

.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.chart-container {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    min-height: 300px;
    aspect-ratio: 4/3;
}

.metric-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.metric-value {
    font-size: 2rem;
    font-weight: bold;
    margin: 0.5rem 0;
}

.metric-trend {
    font-size: 0.9rem;
}

.metric-trend.positive {
    color: var(--success-color);
}

.metric-trend.negative {
    color: var(--danger-color);
}

.nav-btn {
    padding: 8px 15px;
    border-radius: 4px;
    text-decoration: none;
    color: var(--white);
    margin-right: 10px;
    transition: opacity 0.2s;
}

.nav-btn:hover {
    opacity: 0.9;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background-color: var(--gray-light);
    cursor: pointer;
    position: relative;
    min-width: 120px;
    transition: background-color 0.2s ease;
}

th:hover {
    background-color: #f1f1f1;
}

th.asc::after {
    content: ' ↑';
    color: #666;
    font-weight: bold;
}

th.desc::after {
    content: ' ↓';
    color: #666;
    font-weight: bold;
}

.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.85em;
    font-weight: 500;
}

.status-badge.active {
    background-color: #d4edda;
    color: #155724;
}

.status-badge.expired {
    background-color: #f8d7da;
    color: #721c24;
}

.table-controls {
    margin-bottom: 20px;
}

#searchInput {
    width: 100%;
    max-width: 300px;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 20px;
    font-size: 14px;
}

/* Form styling */
.subscription-form input,
.subscription-form textarea,
.subscription-form select {
    width: 100%;
    padding: 10px;
    margin: 8px 0 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    box-sizing: border-box;
    font-size: 14px;
    transition: all 0.3s ease;
    background-color: var(--white);
}

.subscription-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-color);
}

.subscription-form input:focus,
.subscription-form textarea:focus,
.subscription-form select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0,123,255,0.15);
}

/* Number input spinner customization */
.subscription-form input[type="number"]::-webkit-inner-spin-button,
.subscription-form input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.subscription-form input[type="number"] {
    -moz-appearance: textfield;
}

.subscription-form textarea {
    height: 80px;
    resize: vertical;
}

.form-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.form-column h3 {
    margin: 0 0 1rem;
    font-size: 1.1rem;
    color: var(--text-color);
}

@media (max-width: 768px) {
    .dashboard-container {
        padding: 15px;
    }
    
    header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .form-columns {
        grid-template-columns: 1fr;
    }
    
    table {
        display: block;
        overflow-x: auto;
    }
}