/**
 * LinkQR Main Stylesheet
 * Modern, Mobile-First Design
 */

:root {
    --primary-color: #4a90e2;
    --secondary-color: #7b68ee;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --dark-color: #333;
    --light-color: #f8f9fa;
    --border-color: #dee2e6;
    --text-color: #212529;
    --text-muted: #6c757d;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --border-radius: 8px;
    --box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-family);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--light-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Navigation */
.navbar {
    background: white;
    box-shadow: var(--box-shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.nav-brand a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.lang-switcher {
    padding: 0.5rem 1rem;
    background: var(--light-color);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background: #357abd;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

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

.btn-secondary:hover {
    background: #6a5acd;
}

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

.btn-warning {
    background: var(--warning-color);
    color: var(--dark-color);
}

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

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

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: var(--font-family);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.input-group {
    display: flex;
    align-items: center;
}

.input-prefix {
    padding: 0.75rem;
    background: var(--light-color);
    border: 1px solid var(--border-color);
    border-right: none;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    color: var(--text-muted);
}

.input-group input {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Auth Pages */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

.auth-box {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    width: 100%;
    max-width: 400px;
}

.auth-box h1 {
    margin-bottom: 1.5rem;
    text-align: center;
    color: var(--primary-color);
}

/* Dashboard */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.dashboard-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.dashboard-card h2 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
}

.stat-card h3 {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* Tables */
.data-table {
    width: 100%;
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    margin-top: 1.5rem;
}

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

.data-table thead {
    background: var(--light-color);
}

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

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

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

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

.badge-suspended,
.badge-expired,
.badge-inactive {
    background: #f8d7da;
    color: #721c24;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

/* Features */
.features {
    padding: 4rem 0;
}

.features h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Pricing */
.pricing {
    padding: 4rem 0;
    background: var(--light-color);
}

.pricing h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.pricing-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
}

.pricing-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.price {
    font-size: 2rem;
    font-weight: bold;
    margin: 1.5rem 0;
}

.currency {
    font-size: 1rem;
    vertical-align: top;
}

.period {
    font-size: 1rem;
    font-weight: normal;
}

.features-list {
    list-style: none;
    margin: 1.5rem 0;
    text-align: left;
}

.features-list li {
    padding: 0.5rem 0;
}

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

.footer p {
    margin: 0.5rem 0;
}

/* Form Sections */
.form-section {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
}

.form-section h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--light-color);
}

/* Admin Menu */
.admin-menu {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.admin-menu-item {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-decoration: none;
    color: var(--text-color);
    transition: var(--transition);
}

.admin-menu-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.admin-menu-item h2 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.admin-menu-item p {
    color: var(--text-muted);
}

/* Legal Pages */
.legal-page {
    padding: var(--spacing-3xl) 0;
    background: var(--color-gray);
    min-height: calc(100vh - 200px);
}

.legal-content {
    max-width: 900px;
    margin: 0 auto;
    background: var(--color-white);
    padding: var(--spacing-3xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.legal-content h1 {
    font-size: var(--font-4xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.last-updated {
    text-align: center;
    color: var(--color-gray-text);
    font-size: var(--font-sm);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-gray-light);
}

.legal-section {
    margin-bottom: var(--spacing-2xl);
}

.legal-section h2 {
    font-size: var(--font-2xl);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-gray-light);
}

.legal-section p {
    color: var(--color-gray-text);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-base);
}

.legal-section ul {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
}

.legal-section ul li {
    color: var(--color-gray-text);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-base);
}

.legal-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 2px solid var(--color-gray-light);
}

.legal-actions .btn {
    min-width: 180px;
}

/* Checkbox Label */
.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-sm);
    line-height: 1.6;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    cursor: pointer;
    flex-shrink: 0;
    accent-color: var(--color-primary);
}

.checkbox-label span {
    color: var(--color-gray-text);
}

.checkbox-label a {
    color: var(--color-primary);
    text-decoration: underline;
}

.checkbox-label a:hover {
    color: var(--color-primary-dark);
}

@media (max-width: 768px) {
    .legal-content {
        padding: var(--spacing-xl);
    }
    
    .legal-content h1 {
        font-size: var(--font-3xl);
    }
    
    .legal-section h2 {
        font-size: var(--font-xl);
    }
    
    .legal-actions {
        flex-direction: column;
    }
    
    .legal-actions .btn {
        width: 100%;
    }
}

/* Admin Section */
.admin-section {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-top: 2rem;
}

.admin-section h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Template Selection */
.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.template-option {
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    background: white;
}

.template-option:hover {
    border-color: var(--primary-color);
    box-shadow: var(--box-shadow);
}

.template-option.selected {
    border-color: var(--primary-color);
    background: rgba(74, 144, 226, 0.1);
}

.template-option input[type="radio"] {
    display: none;
}

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

.template-name {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

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

.code-editor {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    background: #f8f9fa;
    border: 1px solid var(--border-color);
}

.code-editor:focus {
    background: white;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
    }

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

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

    .hero-cta .btn {
        width: 100%;
    }

    .data-table {
        overflow-x: auto;
    }

    .data-table table {
        min-width: 600px;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-3 {
    margin-top: 1.5rem;
}

.mb-3 {
    margin-bottom: 1.5rem;
}