:root {
    --dark-900: #090e1b;
    --dark-800: #0f172a;
    --dark-700: #1e293b;
    --dark-600: #334155;
    --dark-400: #94a3b8;
    --dark-300: #cbd5e1;
    --primary: #14CACF;
    --primary-100: #92F2F4;
    --primary-600: #0F989C;
}

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

body {
    background-color: var(--dark-900);
    color: var(--dark-400);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

/* HEADER */
.site-header {
    background-color: rgba(9, 14, 27, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--dark-700);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 0 1.5rem;
}
.site-header .inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.logo span { color: var(--primary); }
.logo-badge {
    background: var(--primary);
    color: var(--dark-900);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.header-nav a {
    color: var(--dark-400);
    font-size: 0.9rem;
    margin-left: 1.5rem;
    transition: color 0.2s;
}
.header-nav a:hover { color: var(--primary); }

/* HERO */
.blog-hero {
    padding: 5rem 1.5rem 3rem;
    text-align: center;
    border-bottom: 1px solid var(--dark-700);
}
.blog-hero .label {
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}
.blog-hero h1 {
    color: #fff;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}
.blog-hero p {
    color: var(--dark-400);
    font-size: 1.1rem;
    max-width: 560px;
    margin: 0 auto;
}

/* CATEGORY FILTER */
.category-bar {
    max-width: 1200px;
    margin: 2.5rem auto 0;
    padding: 0 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.cat-btn {
    padding: 0.4rem 1rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--dark-600);
    background: transparent;
    color: var(--dark-400);
    transition: all 0.2s;
}
.cat-btn:hover, .cat-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--dark-900);
}

/* ARTICLES GRID */
.articles-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem 5rem;
}
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
}
.article-card {
    background: var(--dark-800);
    border: 1px solid var(--dark-700);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.2s, transform 0.2s;
}
.article-card:hover {
    border-color: var(--primary-600);
    transform: translateY(-2px);
}
.article-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.article-card-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--dark-700), var(--dark-600));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    opacity: 0.3;
}
.article-card-body { padding: 1.25rem; }
.article-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.8rem;
}
.article-category {
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.article-date { color: var(--dark-400); }
.article-card h2 {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}
.article-card p {
    color: var(--dark-400);
    font-size: 0.9rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.article-card-footer {
    padding: 0.75rem 1.25rem 1.25rem;
    display: flex;
    align-items: center;
}
.read-more {
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    transition: gap 0.2s;
}
.read-more:hover { gap: 0.6rem; }

/* SINGLE ARTICLE */
.article-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 1.5rem 5rem;
}
.article-layout {
    display: grid;
    grid-template-columns: 1fr 3fr;
    gap: 3rem;
}
@media (max-width: 768px) {
    .article-layout { grid-template-columns: 1fr; }
}
.article-sidebar { position: sticky; top: 90px; align-self: start; }
.article-sidebar .s-label {
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}
.article-sidebar h1 {
    color: #fff;
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}
.article-sidebar .cover {
    width: 100%;
    border-radius: 12px;
    object-fit: cover;
    margin-top: 1.5rem;
}
.article-content h2 {
    color: #fff;
    font-size: 1.25rem;
    font-weight: 600;
    margin: 2rem 0 0.75rem;
}
.article-content h3 {
    color: #e2e8f0;
    font-size: 1.05rem;
    font-weight: 600;
    margin: 1.5rem 0 0.5rem;
}
.article-content p {
    color: var(--dark-300);
    margin-bottom: 1.25rem;
    font-size: 1rem;
    line-height: 1.8;
}
.article-content ul, .article-content ol {
    color: var(--dark-300);
    padding-left: 1.5rem;
    margin-bottom: 1.25rem;
    line-height: 1.8;
}
.article-content img {
    max-width: 100%;
    border-radius: 8px;
    margin: 1.5rem 0;
}
.article-content blockquote {
    border-left: 3px solid var(--primary);
    padding-left: 1rem;
    margin: 1.5rem 0;
    color: var(--dark-400);
    font-style: italic;
}
.article-content a { color: var(--primary); text-decoration: underline; }
.article-content strong { color: #fff; }
.article-back {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 2rem;
    transition: gap 0.2s;
}
.article-back:hover { gap: 0.7rem; }

/* FOOTER */
.site-footer {
    border-top: 1px solid var(--dark-700);
    padding: 2rem 1.5rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--dark-400);
}
.site-footer a { color: var(--primary); }

/* EMPTY STATE */
.empty-state {
    text-align: center;
    padding: 5rem 1.5rem;
    color: var(--dark-400);
}
.empty-state h3 { color: #fff; margin-bottom: 0.5rem; }

/* ADMIN STYLES */
.admin-body {
    background-color: var(--dark-900);
    min-height: 100vh;
}
.admin-header {
    background-color: var(--dark-800);
    border-bottom: 1px solid var(--dark-700);
    padding: 0 1.5rem;
}
.admin-header .inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}
.admin-nav a {
    color: var(--dark-400);
    font-size: 0.875rem;
    margin-left: 1.25rem;
    transition: color 0.2s;
}
.admin-nav a:hover, .admin-nav a.active { color: var(--primary); }
.admin-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}
.admin-page-title {
    color: #fff;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1.2rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}
.btn-primary {
    background: var(--primary);
    color: var(--dark-900);
}
.btn-primary:hover { background: var(--primary-100); }
.btn-secondary {
    background: var(--dark-700);
    color: var(--dark-300);
}
.btn-secondary:hover { background: var(--dark-600); }
.btn-danger {
    background: #ef4444;
    color: #fff;
}
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: 0.3rem 0.75rem; font-size: 0.8rem; }

.table-wrap {
    background: var(--dark-800);
    border: 1px solid var(--dark-700);
    border-radius: 12px;
    overflow: hidden;
}
table { width: 100%; border-collapse: collapse; }
th {
    background: var(--dark-700);
    color: var(--dark-300);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.75rem 1rem;
    text-align: left;
}
td {
    padding: 0.875rem 1rem;
    border-top: 1px solid var(--dark-700);
    color: var(--dark-400);
    font-size: 0.875rem;
    vertical-align: middle;
}
tr:hover td { background: rgba(255,255,255,0.02); }
td.title-cell { color: #fff; font-weight: 500; }

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-green { background: rgba(20, 202, 207, 0.1); color: var(--primary); }
.badge-gray { background: var(--dark-700); color: var(--dark-400); }

/* FORM */
.form-card {
    background: var(--dark-800);
    border: 1px solid var(--dark-700);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.form-group { margin-bottom: 1.25rem; }
.form-group:last-child { margin-bottom: 0; }
label {
    display: block;
    color: var(--dark-300);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.4rem;
}
input[type=text], input[type=password], input[type=email], textarea, select {
    width: 100%;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    border-radius: 8px;
    padding: 0.6rem 0.875rem;
    color: #fff;
    font-size: 0.875rem;
    outline: none;
    transition: border-color 0.2s;
    font-family: inherit;
}
input:focus, textarea:focus, select:focus {
    border-color: var(--primary);
}
select option { background: var(--dark-800); }
textarea { resize: vertical; min-height: 120px; }
.form-hint { color: var(--dark-400); font-size: 0.78rem; margin-top: 0.3rem; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

/* EDITOR */
#content-editor {
    min-height: 400px;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.7;
}

.editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    padding: 0.5rem;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    border-bottom: none;
    border-radius: 8px 8px 0 0;
}
.editor-toolbar button {
    background: var(--dark-600);
    border: none;
    color: var(--dark-300);
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    transition: all 0.15s;
}
.editor-toolbar button:hover { background: var(--primary); color: var(--dark-900); }
#content-editor {
    border-radius: 0 0 8px 8px !important;
}

.toggle-switch {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    user-select: none;
}
.toggle-switch input { display: none; }
.toggle-track {
    width: 44px; height: 24px;
    background: var(--dark-600);
    border-radius: 999px;
    position: relative;
    transition: background 0.2s;
}
.toggle-track::after {
    content: '';
    position: absolute;
    width: 18px; height: 18px;
    background: #fff;
    border-radius: 50%;
    top: 3px; left: 3px;
    transition: left 0.2s;
}
.toggle-switch input:checked + .toggle-track { background: var(--primary); }
.toggle-switch input:checked + .toggle-track::after { left: 23px; }
.toggle-label { color: var(--dark-300); font-size: 0.875rem; }

/* LOGIN PAGE */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}
.login-card {
    background: var(--dark-800);
    border: 1px solid var(--dark-700);
    border-radius: 16px;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
}
.login-card .logo { justify-content: center; margin-bottom: 0.5rem; }
.login-card .subtitle { text-align: center; font-size: 0.9rem; margin-bottom: 2rem; }
.alert {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
}
.alert-error { background: rgba(239,68,68,0.1); color: #fca5a5; border: 1px solid rgba(239,68,68,0.3); }
.alert-success { background: rgba(20,202,207,0.1); color: var(--primary); border: 1px solid rgba(20,202,207,0.3); }

/* STATS CARDS */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}
.stat-card {
    background: var(--dark-800);
    border: 1px solid var(--dark-700);
    border-radius: 12px;
    padding: 1.25rem;
}
.stat-card .stat-label { color: var(--dark-400); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.5rem; }
.stat-card .stat-value { color: #fff; font-size: 2rem; font-weight: 700; }
.stat-card .stat-sub { color: var(--primary); font-size: 0.8rem; margin-top: 0.25rem; }

/* UPLOAD */
.upload-area {
    border: 2px dashed var(--dark-600);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s;
}
.upload-area:hover { border-color: var(--primary); }
.cover-preview {
    max-width: 300px;
    border-radius: 8px;
    margin-top: 0.75rem;
}