/* Import Modern Typography from Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Noto+Sans+KR:wght@300;400;500;700&display=swap');

:root {
    --bg-primary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --accent: #991b1b; /* Steel Red (red-800) */
    --accent-hover: #7f1d1d; /* Dark Steel Red (red-900) */
    --border: #e2e8f0;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 20px 25px -5px rgba(153, 27, 27, 0.08), 0 10px 10px -6px rgba(153, 27, 27, 0.04);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Outfit', 'Noto Sans KR', sans-serif;
}

[data-theme="dark"] {
    --bg-primary: #090d16;
    --bg-card: #131b2e;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent: #f87171; /* Light Steel Red (red-400) */
    --accent-hover: #ef4444; /* red-500 */
    --border: #1e293b;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 20px 25px -5px rgba(248, 113, 113, 0.12), 0 10px 10px -6px rgba(248, 113, 113, 0.04);
}

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

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

/* Navigation bar */
header {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
}

[data-theme="dark"] header {
    background-color: rgba(19, 27, 46, 0.8);
}

/* Top Utility Bar */
.top-bar {
    background-color: #f1f5f9;
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

[data-theme="dark"] .top-bar {
    background-color: #0f172a;
}

.top-bar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.6rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left {
    font-weight: 500;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.topbar-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.topbar-link:hover {
    color: var(--accent);
}

.topbar-divider {
    color: var(--border);
    font-size: 0.8rem;
}

/* Brand Header */
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-centered {
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.logo-centered img {
    height: 75px; /* Centered and large logo size */
    width: auto;
    object-fit: contain;
    display: block;
    transition: var(--transition);
}

.logo-centered:hover img {
    transform: scale(1.02);
}

[data-theme="dark"] .logo-centered img {
    filter: brightness(0) invert(1);
}

.theme-toggle-btn, .admin-btn, .logout-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle-btn:hover, .admin-btn:hover {
    color: var(--accent);
    background-color: rgba(99, 102, 241, 0.1);
}

.admin-btn {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
}

.admin-btn-primary {
    background-color: var(--accent);
    color: #ffffff !important;
    border: none;
}

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

/* Main Layout */
main {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.hero-section {
    text-align: center;
    margin-bottom: 3.5rem;
}

.hero-section h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -1px;
}

.hero-section p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Card Grid Layout */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2.5rem 2rem;
    margin-bottom: 4rem;
}

.article-card {
    background-color: transparent;
    border: none;
    border-radius: 0;
    overflow: visible;
    box-shadow: none;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    position: relative;
    text-decoration: none;
    color: inherit;
}

.article-card:hover {
    transform: translateY(-6px);
}

.card-image-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.card-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.article-card:hover .card-image {
    transform: scale(1.04);
}

.card-image-fallback {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(168, 85, 247, 0.05));
    font-size: 0.9rem;
    gap: 0.5rem;
}

.card-body {
    padding: 0;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 2.8em;
}

.card-intro {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 3em;
}

.card-category {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent);
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    text-decoration: none;
    transition: var(--transition);
}

.card-category:hover {
    color: var(--accent-hover);
}

/* Pagination */
.pagination-wrapper {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
}

.pagination-nav {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.pagination-nav a, .pagination-nav span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.5rem;
    height: 2.5rem;
    padding: 0 0.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background-color: var(--bg-card);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
}

.pagination-nav a:hover {
    border-color: var(--accent);
    color: var(--accent);
    background-color: rgba(99, 102, 241, 0.05);
}

.pagination-nav .active {
    background-color: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
}

.pagination-nav .disabled {
    color: var(--text-secondary);
    opacity: 0.5;
    cursor: not-allowed;
}

/* Detail Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    padding: 2rem;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    max-width: 750px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border);
    position: relative;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal-overlay.active .modal-container {
    transform: scale(1);
}

.modal-close-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.05);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: var(--transition);
    z-index: 10;
}

.modal-close-btn:hover {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--accent);
}

.modal-image-wrapper {
    width: 100%;
    max-height: 400px;
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.05);
}

.modal-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal-content-body {
    padding: 2.5rem;
}

.modal-title {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}

.modal-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
}

.modal-article-text {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-primary);
    white-space: pre-line;
}

/* Detail Page (fallback) */
.detail-container {
    max-width: 100%;
    margin: 0 auto;
    padding: 2rem 0;
}

.detail-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 2rem;
    transition: var(--transition);
    font-weight: 500;
}

.detail-back-link:hover {
    color: var(--accent);
}

/* Footer styling */
footer {
    border-top: 1px solid var(--border);
    padding: 2rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: auto;
}

/* Auth Login & Admin Pages CSS */
.auth-wrapper {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 3rem;
    max-width: 450px;
    width: 100%;
    box-shadow: var(--shadow);
}

.auth-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
}

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-submit-btn {
    width: 100%;
    padding: 0.85rem;
    border: none;
    background-color: var(--accent);
    color: #ffffff;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 1rem;
}

.form-submit-btn:hover {
    background-color: var(--accent-hover);
}

.error-message {
    color: #ef4444;
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

.alert {
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

/* Admin Dashboard Table */
.admin-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.admin-title-group h1 {
    font-size: 2rem;
    font-weight: 700;
}

.admin-table-wrapper {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.admin-table th {
    background-color: var(--bg-primary);
    padding: 1rem 1.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

.admin-table td {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}

.admin-table tr:last-child td {
    border-bottom: none;
}

.admin-table-title-cell {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.admin-table-thumb {
    width: 50px;
    height: 35px;
    object-fit: cover;
    border-radius: 4px;
    background-color: rgba(0, 0, 0, 0.05);
}

.admin-table-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: nowrap;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border);
    transition: var(--transition);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.btn-edit {
    color: var(--accent);
    border-color: var(--accent);
    background-color: transparent;
}

.btn-edit:hover {
    background-color: var(--accent);
    color: #ffffff;
}

.btn-delete {
    color: #ef4444;
    border-color: #ef4444;
    background-color: transparent;
}

.btn-delete:hover {
    background-color: #ef4444;
    color: #ffffff;
}

/* File Upload input custom styling */
.file-upload-preview {
    margin-top: 1rem;
    max-width: 200px;
    max-height: 150px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    border: 1px solid var(--border);
    display: none;
}

.file-upload-container {
    border: 2px dashed var(--border);
    border-radius: var(--radius-sm);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.file-upload-container:hover {
    border-color: var(--accent);
    background-color: rgba(99, 102, 241, 0.02);
}

.file-upload-container svg {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.admin-form-container {
    max-width: 100%;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 2.5rem;
    box-shadow: var(--shadow);
}

/* Froala Editor Custom Styling Overrides */
.fr-wrapper {
    min-height: 350px !important;
    background-color: #ffffff !important;
    color: #0f172a !important;
}

.fr-box {
    border-radius: var(--radius-sm) !important;
    overflow: hidden;
    border-color: var(--border) !important;
}

.fr-toolbar {
    border-color: var(--border) !important;
    background-color: var(--bg-primary) !important;
}

.fr-second-toolbar {
    border-color: var(--border) !important;
    background-color: var(--bg-primary) !important;
}

/* Image scaling and caption alignment in details view */
.modal-article-text img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    border-radius: var(--radius-sm);
    display: block;
    margin: 1.5rem auto !important;
}

/* Adjust caption elements generated by Froala */
.modal-article-text .fr-img-caption {
    width: 100% !important;
    max-width: 100% !important;
    display: block !important;
    margin: 1.5rem auto !important;
    text-align: center;
}

.modal-article-text .fr-img-caption img {
    margin: 0 auto !important;
}

.modal-article-text .fr-img-caption .fr-inner {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    line-height: 1.4;
    text-align: center;
}

/* Password Change Modal Custom Styles */
.password-modal-container {
    max-width: 450px !important;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* Hide Froala Unlicensed Warning Banner & Branding without triggering anti-tamper crash */
.fr-wrapper > div[style*="z-index: 9999"],
.fr-wrapper > div[style*="z-index:9999"],
div[style*="z-index: 9999"],
div[style*="z-index:9999"] {
    background-color: transparent !important;
    background: transparent !important;
    color: transparent !important;
    font-size: 0px !important;
    height: 1px !important;
    min-height: 1px !important;
    line-height: 1px !important;
    padding: 0 !important;
    margin: 0 !important;
    border: none !important;
    overflow: hidden !important;
}

/* Hide Froala Powered-by Branding inside Content Views */
.fr-view p[data-f-id="pbf"],
.modal-article-text p[data-f-id="pbf"] {
    display: none !important;
    height: 0 !important;
    opacity: 0 !important;
    overflow: hidden !important;
}