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

:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --primary-color: #4a90e2;
    --secondary-color: #6c757d;
    --border-color: #e0e0e0;
    --card-bg: #f9f9f9;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
    --input-bg: #ffffff;
    --editor-bg: #ffffff;
    
    /* RGB values for transparency */
    --bg-rgb: 255, 255, 255;
    --text-rgb: 51, 51, 51;
    --primary-rgb: 74, 144, 226;
    --card-bg-rgb: 249, 249, 249;
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --border-color: #333333;
    --card-bg: #2a2a2a;
    --shadow: 0 2px 8px rgba(0,0,0,0.3);
    --input-bg: #2a2a2a;
    --editor-bg: #1f1f1f;
    
    /* RGB values for transparency */
    --bg-rgb: 26, 26, 26;
    --text-rgb: 224, 224, 224;
    --primary-rgb: 74, 144, 226;
    --card-bg-rgb: 42, 42, 42;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: var(--transition);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
    border: 2px solid var(--bg-color);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) var(--bg-color);
}

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

/* Header */
.header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.logo a {
    color: var(--text-color);
    text-decoration: none;
}

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

/* Buttons */
.btn-primary, .btn-secondary, .btn-theme, .btn-colors {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    font-weight: 500;
}

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

.btn-primary:hover {
    background: #357abd;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(74, 144, 226, 0.3);
}

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

.btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(108, 117, 125, 0.3);
}

.btn-theme, .btn-colors {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    font-size: 1.2rem;
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
}

.btn-theme:hover, .btn-colors:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

/* Main Content */
.main {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

/* Admin Tabs */
.admin-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-color);
    border-bottom: 3px solid transparent;
    transition: var(--transition);
}

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

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Articles Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.article-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: var(--transition);
    position: relative;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--primary-color);
}

.article-card[data-type="draft"] {
    opacity: 0.7;
    border-style: dashed;
}

.badge-pinned, .badge-draft {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-draft {
    background: var(--secondary-color);
}

.article-title {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.article-title a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s;
}

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

.article-description {
    color: var(--text-color);
    opacity: 0.8;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.article-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-color);
    opacity: 0.6;
    margin-bottom: 1rem;
}

.article-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.btn-action {
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-color);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition);
}

.btn-action:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(74, 144, 226, 0.3);
}

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

.btn-pin:hover {
    background: #ffc107;
    border-color: #ffc107;
    color: #000;
}

.btn-delete:hover {
    background: #dc3545;
    border-color: #dc3545;
    color: white;
}

/* Empty State */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-color);
    opacity: 0.6;
}

.empty-state p {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    overflow-y: auto;
}

.modal.active {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 2rem 0;
}

.modal-content {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    position: relative;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    margin: auto;
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

.modal-content-large {
    max-width: 900px;
}

.modal-editor .modal-content-large {
    max-height: 90vh;
    overflow-y: auto;
}

/* Scrollbar in modal */
.modal-content-large::-webkit-scrollbar {
    width: 8px;
}

.modal-content-large::-webkit-scrollbar-track {
    background: transparent;
}

.modal-content-large::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.modal-content-large::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-color);
    opacity: 0.6;
    line-height: 1;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    opacity: 1;
    color: var(--primary-color);
}

.modal h2 {
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

/* Forms */
form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="file"],
textarea,
select {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--text-color);
    font-family: inherit;
    transition: var(--transition);
}

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

textarea {
    min-height: 150px;
    resize: vertical;
    background: var(--editor-bg);
}

label {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    cursor: pointer;
}

label strong {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-color);
}

label small {
    color: var(--text-color);
    opacity: 0.7;
    font-size: 0.85rem;
}

details {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    background: rgba(var(--card-bg-rgb), 0.7);
}

details[open] {
    padding-bottom: 1.5rem;
}

details summary {
    margin: -1rem;
    padding: 1rem;
    cursor: pointer;
    user-select: none;
    color: var(--text-color);
    font-weight: 600;
}

details summary:hover {
    background: rgba(var(--primary-rgb), 0.1);
    border-radius: 6px;
    color: var(--primary-color);
}

/* Editor Toolbar */
#editor-toolbar {
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: 6px 6px 0 0;
    padding: 0.5rem;
    background: var(--card-bg);
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.editor-btn {
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-color);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    min-width: 36px;
}

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

.editor-btn strong,
.editor-btn em {
    font-style: normal;
}

#contentInput {
    width: 100%;
    min-height: 300px;
    border: 1px solid var(--border-color);
    border-radius: 0 0 6px 6px;
    padding: 10px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    resize: vertical;
    background: var(--editor-bg);
    color: var(--text-color);
}

.error-message {
    color: #dc3545;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* Color Picker Group */
.color-picker-group {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.color-picker-group label {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.color-picker-group input[type="color"] {
    width: 100%;
    height: 50px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    background: var(--input-bg);
}

/* Image Preview */
#imagePreview img {
    max-width: 200px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

/* Checkbox */
input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        width: 100%;
        justify-content: space-between;
        flex-wrap: wrap;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .admin-tabs {
        overflow-x: auto;
    }
    
    .modal-content {
        width: 95%;
        padding: 1.5rem;
    }
    
    .article-actions {
        flex-direction: column;
    }
    
    .btn-action {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.2rem;
    }
    
    .btn-primary, .btn-secondary {
        font-size: 0.85rem;
        padding: 0.4rem 0.8rem;
    }
    
    .article-title {
        font-size: 1.25rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .header, .nav, .admin-tabs, .article-actions, .modal {
        display: none;
    }
    
    .article-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}