/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f7fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* Navbar */
.navbar {
    background: #2c3e50;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.navbar-brand a {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

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

.navbar-menu a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.navbar-menu a:hover {
    opacity: 0.8;
}

.navbar-user {
    color: #3498db;
    font-weight: 500;
}

/* Main content */
main {
    flex: 1;
    padding: 2rem 0;
}

/* Alerts */
.alert {
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-radius: 4px;
    border-left: 4px solid;
}

.alert-success {
    background: #d4edda;
    border-color: #28a745;
    color: #155724;
}

.alert-danger {
    background: #f8d7da;
    border-color: #dc3545;
    color: #721c24;
}

.alert-info {
    background: #d1ecf1;
    border-color: #17a2b8;
    color: #0c5460;
}

.alert-warning {
    background: #fff3cd;
    border-color: #ffc107;
    color: #856404;
}

/* Cards */
.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 2rem;
    margin-bottom: 2rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.card h1, .card h2 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* Forms */
.form {
    max-width: 500px;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #2c3e50;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-help {
    font-size: 0.875rem;
    color: #6c757d;
    margin-top: 0.25rem;
}

.form-error {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.text-success { color: #28a745; }
.text-danger { color: #dc3545; }
.text-info { color: #17a2b8; }
.text-warning { color: #ffc107; }

/* Checkbox */
.checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-warning {
    background: #ffc107;
    color: #333;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-info {
    background: #17a2b8;
    color: white;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

.btn-block {
    display: block;
    width: 100%;
    margin-top: 0.5rem;
}

.btn-group {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.table th,
.table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

.table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
}

.table tr:hover {
    background: #f8f9fa;
}

.url-cell {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.short-link {
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
}

.short-link:hover {
    text-decoration: underline;
}

.actions {
    display: flex;
    gap: 0.5rem;
}

.actions form {
    margin: 0;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 12px;
}

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

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

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

.stat-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 1.5rem;
    text-align: center;
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 0.25rem;
}

.stat-label {
    color: #6c757d;
    font-size: 0.875rem;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #e9ecef;
}

.page-info {
    color: #6c757d;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #6c757d;
}

/* Login/Setup Container */
.login-container,
.setup-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 200px);
}

.login-container .card,
.setup-container .card {
    max-width: 450px;
    width: 100%;
}

/* URL Preview */
.url-preview {
    background: #e3f2fd;
    border: 1px solid #2196f3;
    border-radius: 4px;
    padding: 1rem;
    margin: 1rem 0;
}

.url-preview a {
    color: #2196f3;
    word-break: break-all;
}

/* Info Box */
.info-box {
    background: #f8f9fa;
    border-left: 4px solid #3498db;
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-radius: 4px;
}

/* Bar Chart */
.bar-chart {
    width: 100%;
    background: #f8f9fa;
    border-radius: 4px;
    overflow: hidden;
}

.bar {
    background: linear-gradient(90deg, #3498db, #2980b9);
    color: white;
    padding: 0.5rem;
    font-weight: bold;
    text-align: right;
    min-width: 50px;
}

/* Error Page */
.error-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 200px);
    text-align: center;
}

.error-content h1 {
    font-size: 6rem;
    color: #e74c3c;
    margin-bottom: 1rem;
}

.error-content h2 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
}

/* Info Table */
.info-table {
    width: 100%;
}

.info-table th {
    text-align: right;
    padding-right: 1rem;
    font-weight: 600;
    color: #2c3e50;
    width: 200px;
}

.info-table td {
    padding: 0.5rem 0;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar-menu {
        flex-wrap: wrap;
        gap: 0.75rem;
    }

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

    .card-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .table {
        font-size: 0.875rem;
    }

    .url-cell {
        max-width: 150px;
    }

    .actions {
        flex-direction: column;
    }

    .info-table th {
        display: block;
        text-align: left;
        width: 100%;
        padding-right: 0;
    }

    .info-table td {
        display: block;
        width: 100%;
        padding-bottom: 1rem;
    }
}

/* User Agent Cell */
.user-agent {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.875rem;
    color: #6c757d;
}