/**
 * 단축 URL 관리 시스템 - 스타일시트
 */

/* ============================================
   CSS Variables
   ============================================ */
:root {
    --primary-color: #2c7be5;
    --primary-hover: #1a68d1;
    --secondary-color: #6c757d;
    --success-color: #00d97e;
    --danger-color: #e63757;
    --warning-color: #f6c343;
    --info-color: #39afd1;
    --dark-color: #12263f;
    --light-color: #f9fbfd;
    --border-color: #e3ebf6;
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.15);
    --transition: all 0.2s ease-in-out;
}

/* ============================================
   Base Styles
   ============================================ */
body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Malgun Gothic', sans-serif;
    background-color: var(--light-color);
    color: var(--dark-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

/* ============================================
   Navigation
   ============================================ */
.navbar {
    background: linear-gradient(135deg, var(--dark-color) 0%, #1e3a5f 100%);
    box-shadow: var(--shadow);
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
}

.navbar-brand i {
    font-size: 1.5rem;
}

.nav-link {
    padding: 0.5rem 1rem !important;
    border-radius: 0.375rem;
    margin: 0 0.125rem;
    transition: var(--transition);
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
    background-color: var(--primary-color) !important;
}

/* ============================================
   Cards
   ============================================ */
.card {
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow);
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    padding: 1rem 1.25rem;
}

.card-title {
    margin-bottom: 0;
    font-weight: 600;
}

/* ============================================
   Dashboard Stats Cards
   ============================================ */
.stat-card {
    border: none;
    border-radius: 0.5rem;
    overflow: hidden;
}

.stat-card .card-body {
    padding: 1.5rem;
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-card .stat-label {
    color: var(--secondary-color);
    font-size: 0.875rem;
}

.stat-card.stat-primary { background: linear-gradient(135deg, #e8f4fd 0%, #d1e9fc 100%); }
.stat-card.stat-primary .stat-icon { background-color: var(--primary-color); color: #fff; }

.stat-card.stat-success { background: linear-gradient(135deg, #e6f9f1 0%, #ccf3e3 100%); }
.stat-card.stat-success .stat-icon { background-color: var(--success-color); color: #fff; }

.stat-card.stat-warning { background: linear-gradient(135deg, #fef9e6 0%, #fdf3cc 100%); }
.stat-card.stat-warning .stat-icon { background-color: var(--warning-color); color: #fff; }

.stat-card.stat-danger { background: linear-gradient(135deg, #fce8eb 0%, #f9d1d8 100%); }
.stat-card.stat-danger .stat-icon { background-color: var(--danger-color); color: #fff; }

.stat-card.stat-info { background: linear-gradient(135deg, #e7f6fa 0%, #ceedf5 100%); }
.stat-card.stat-info .stat-icon { background-color: var(--info-color); color: #fff; }

/* ============================================
   Tables
   ============================================ */
.table {
    margin-bottom: 0;
}

.table th {
    font-weight: 600;
    background-color: #f8f9fa;
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

.table td {
    vertical-align: middle;
}

.table-hover tbody tr:hover {
    background-color: #f8fafc;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: var(--transition);
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

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

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

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

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

/* ============================================
   Forms
   ============================================ */
.form-control,
.form-select {
    border-color: var(--border-color);
    border-radius: 0.375rem;
    padding: 0.5rem 0.75rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(44, 123, 229, 0.15);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.375rem;
}

.form-text {
    font-size: 0.8125rem;
}

/* ============================================
   Badges
   ============================================ */
.badge {
    font-weight: 500;
    padding: 0.375em 0.625em;
    border-radius: 0.25rem;
}

.badge-status {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.badge-status::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.badge-status.bg-success::before { background-color: #fff; }
.badge-status.bg-danger::before { background-color: #fff; }
.badge-status.bg-warning::before { background-color: #000; }

/* ============================================
   Toast Messages
   ============================================ */
.toast-message {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 24px;
    border-radius: 0.5rem;
    color: #fff;
    font-weight: 500;
    z-index: 9999;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
}

.toast-message.show {
    opacity: 1;
    transform: translateY(0);
}

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

.toast-error {
    background-color: var(--danger-color);
}

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

.toast-info {
    background-color: var(--info-color);
}

/* ============================================
   URL Display
   ============================================ */
.url-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: #f8f9fa;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    border: 1px solid var(--border-color);
}

.url-display input {
    flex: 1;
    border: none;
    background: transparent;
    outline: none;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.875rem;
}

.url-display .btn {
    flex-shrink: 0;
}

/* Short URL link style */
.short-url {
    font-family: 'Consolas', 'Monaco', monospace;
    font-weight: 500;
    color: var(--primary-color);
}

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

/* ============================================
   Pagination
   ============================================ */
.pagination {
    margin-bottom: 0;
}

.page-link {
    color: var(--primary-color);
    border-color: var(--border-color);
}

.page-link:hover {
    background-color: #e9ecef;
    border-color: var(--border-color);
    color: var(--primary-hover);
}

.page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--secondary-color);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h5 {
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

/* ============================================
   Loading Spinner
   ============================================ */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
}

/* ============================================
   Utilities
   ============================================ */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cursor-pointer {
    cursor: pointer;
}

.min-w-100 {
    min-width: 100px;
}

.min-w-150 {
    min-width: 150px;
}

.max-w-300 {
    max-width: 300px;
}

.max-w-400 {
    max-width: 400px;
}

/* ============================================
   Code/QR Display
   ============================================ */
.code-display {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    padding: 0.75rem 1rem;
    background-color: #f8f9fa;
    border-radius: 0.375rem;
    border: 1px solid var(--border-color);
}

.qr-container {
    display: inline-block;
    padding: 1rem;
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
}

/* ============================================
   Modal Customization
   ============================================ */
.modal-header {
    border-bottom: 1px solid var(--border-color);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 768px) {
    .stat-card .stat-value {
        font-size: 1.5rem;
    }

    .table-responsive {
        font-size: 0.875rem;
    }

    .btn-group-responsive {
        display: flex;
        flex-direction: column;
        gap: 0.25rem;
    }

    .btn-group-responsive .btn {
        width: 100%;
    }
}

@media (max-width: 576px) {
    main.container-fluid {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    .card-body {
        padding: 1rem;
    }
}