/* =========================================================
   LinkNest - Stylesheet
   ========================================================= */

:root {
    --primary: #2563EB;
    --primary-dark: #1D4ED8;
    --background: #F8FAFC;
    --card: #FFFFFF;
    --text: #0F172A;
    --text-muted: #64748B;
    --border: #E2E8F0;
    --radius: 12px;
    --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.08);
    --shadow-hover: 0 8px 20px rgba(37, 99, 235, 0.12);
    --font: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

[data-theme="dark"] {
    --background: #0F172A;
    --card: #1E293B;
    --text: #F1F5F9;
    --text-muted: #94A3B8;
    --border: #334155;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

body {
    font-family: var(--font);
    background: var(--background);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

.container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ---------------- Header ---------------- */
.site-header {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.15rem;
}

.brand-logo { height: 36px; width: 36px; }

.header-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 4px 6px;
    font-size: 0.85rem;
    font-weight: 700;
}

.lang-btn {
    padding: 4px 10px;
    border-radius: 999px;
    color: var(--text-muted);
}

.lang-btn.active {
    background: var(--primary);
    color: #fff;
}

.lang-sep { color: var(--border); }

.icon-btn {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    background: var(--card);
    border-radius: 10px;
    color: var(--text);
    transition: all 0.15s ease;
}

.icon-btn:hover { background: var(--background); border-color: var(--primary); }
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn-danger:hover { border-color: #EF4444; color: #EF4444; }

/* ---------------- Hero ---------------- */
.hero {
    padding: 56px 0 32px;
    text-align: center;
}

.hero-title {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800;
    margin: 0 0 10px;
    color: var(--text);
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--primary);
    font-weight: 700;
    margin: 0 0 6px;
}

.hero-subtext {
    color: var(--text-muted);
    max-width: 560px;
    margin: 0 auto 26px;
}

.search-box {
    max-width: 480px;
    margin: 24px auto 0;
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 12px 18px;
    box-shadow: var(--shadow);
}

.search-box svg { width: 18px; height: 18px; color: var(--text-muted); flex-shrink: 0; }

.search-box input {
    border: none;
    background: transparent;
    outline: none;
    width: 100%;
    font-family: var(--font);
    font-size: 1rem;
    color: var(--text);
}

/* ---------------- Category Filters ---------------- */
.filters-section { padding: 8px 0 24px; }

.category-filters {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
}

.category-filters::-webkit-scrollbar { display: none; }

.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    padding: 9px 16px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text-muted);
    font-weight: 700;
    font-size: 0.9rem;
    transition: all 0.15s ease;
}

.filter-chip svg { width: 15px; height: 15px; }

.filter-chip:hover { border-color: var(--primary); color: var(--primary); }

.filter-chip.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* ---------------- Link Cards ---------------- */
.links-section { padding: 12px 0 60px; }

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.link-card {
    position: relative;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    display: flex;
    flex-direction: column;
}

.link-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(37, 99, 235, 0.35);
}

.link-card-top { margin-bottom: 14px; }

.link-logo {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    object-fit: cover;
    background: var(--background);
}

.link-title {
    font-size: 1.05rem;
    font-weight: 800;
    margin: 0 0 6px;
}

.link-desc {
    color: var(--text-muted);
    font-size: 0.92rem;
    margin: 0 0 12px;
    flex-grow: 1;
}

.link-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    background: rgba(37, 99, 235, 0.08);
    padding: 4px 10px;
    border-radius: 999px;
    margin-bottom: 14px;
    width: fit-content;
}

.visit-btn {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--primary);
    color: #fff;
    font-weight: 700;
    padding: 11px 18px;
    border-radius: 10px;
    transition: background 0.15s ease;
}

.visit-btn:hover { background: var(--primary-dark); }
.visit-btn svg { width: 16px; height: 16px; }

.badge {
    position: absolute;
    top: 14px;
    right: 14px;
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    padding: 4px 9px;
    border-radius: 999px;
    color: #fff;
    background: var(--primary);
}

.badge-hot { background: #EF4444; }
.badge-new { background: #10B981; }
.badge-best { background: #F59E0B; }

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 0;
    font-size: 1rem;
}

/* ---------------- Footer ---------------- */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 32px 0;
    background: var(--card);
}

.footer-inner { text-align: center; }

.social-links {
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-bottom: 16px;
}

.social-links a {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--background);
    border: 1px solid var(--border);
    color: var(--text-muted);
    transition: all 0.15s ease;
}

.social-links a:hover { color: var(--primary); border-color: var(--primary); }
.social-links svg { width: 16px; height: 16px; }

.disclosure {
    max-width: 640px;
    margin: 0 auto 12px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
}

/* ---------------- Auth Pages ---------------- */
.auth-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--background);
    font-family: var(--font);
    padding: 20px;
}

.auth-card {
    width: 100%;
    max-width: 400px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 32px;
}

.auth-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.1rem;
    margin-bottom: 22px;
}

.auth-brand img { height: 34px; }

.auth-title {
    font-size: 1.4rem;
    font-weight: 800;
    margin: 0 0 18px;
}

.auth-form { display: flex; flex-direction: column; gap: 14px; }

.auth-form label { display: flex; flex-direction: column; gap: 6px; font-size: 0.88rem; font-weight: 700; color: var(--text-muted); }

.auth-form input {
    padding: 11px 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    font-family: var(--font);
    font-size: 0.95rem;
    color: var(--text);
    background: var(--background);
}

.auth-form input:focus { outline: none; border-color: var(--primary); }

.back-link {
    display: flex;
    align-items: center;
    gap: 6px;
    justify-content: center;
    margin-top: 18px;
    font-size: 0.88rem;
    color: var(--text-muted);
}

.back-link svg { width: 15px; height: 15px; }

/* ---------------- Buttons ---------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.92rem;
    border: 1px solid transparent;
    transition: all 0.15s ease;
}

.btn svg { width: 16px; height: 16px; }

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }

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

.btn-block { width: 100%; }

/* ---------------- Alerts ---------------- */
.alert {
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 18px;
    font-size: 0.9rem;
    font-weight: 600;
}

.alert-success { background: rgba(16, 185, 129, 0.12); color: #047857; }
.alert-error { background: rgba(239, 68, 68, 0.12); color: #B91C1C; }
.alert-warning { background: rgba(245, 158, 11, 0.14); color: #92400E; }

/* =========================================================
   Admin Panel
   ========================================================= */

.admin-body { background: var(--background); font-family: var(--font); color: var(--text); }

.admin-wrap { display: flex; min-height: 100vh; }

.admin-sidebar {
    width: 240px;
    background: var(--card);
    border-right: 1px solid var(--border);
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.admin-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px;
    font-weight: 800;
    border-bottom: 1px solid var(--border);
}

.admin-brand img { height: 32px; }

.admin-nav { display: flex; flex-direction: column; padding: 14px; gap: 4px; }

.admin-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.admin-nav a svg { width: 17px; height: 17px; }

.admin-nav a:hover { background: var(--background); color: var(--text); }
.admin-nav a.active { background: var(--primary); color: #fff; }
.admin-nav a.logout-link { margin-top: 10px; border-top: 1px solid var(--border); padding-top: 14px; color: #EF4444; }

.admin-main { flex-grow: 1; min-width: 0; }

.admin-topbar {
    height: 66px;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 10;
}

#sidebarToggle { display: none; }

.admin-page-title { font-size: 1.15rem; font-weight: 800; margin: 0; flex-grow: 1; }

.admin-topbar-right { display: flex; align-items: center; gap: 16px; }

.admin-user {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 700;
    font-size: 0.88rem;
    color: var(--text-muted);
}

.admin-user svg { width: 16px; height: 16px; }

.admin-content { padding: 24px; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow);
}

.stat-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg { width: 20px; height: 20px; }
.stat-icon-blue { background: rgba(37, 99, 235, 0.12); color: var(--primary); }
.stat-icon-green { background: rgba(16, 185, 129, 0.12); color: #059669; }
.stat-icon-red { background: rgba(239, 68, 68, 0.12); color: #DC2626; }

.stat-value { font-size: 1.4rem; font-weight: 800; }
.stat-label { font-size: 0.82rem; color: var(--text-muted); font-weight: 600; }

.admin-panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.panel-title { font-size: 1.05rem; font-weight: 800; margin: 0 0 16px; }
.panel-title small { font-weight: 600; color: var(--text-muted); font-size: 0.78rem; }

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.inline-search { display: flex; gap: 8px; }
.inline-search input {
    padding: 9px 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    font-family: var(--font);
    min-width: 220px;
}

.table-wrap { overflow-x: auto; }

.admin-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.admin-table th {
    text-align: left;
    padding: 10px 12px;
    color: var(--text-muted);
    font-weight: 700;
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}
.admin-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table-thumb { width: 34px; height: 34px; border-radius: 8px; object-fit: cover; }

.mini-badge { color: #F59E0B; }

.badge-status-btn {
    border: none;
    border-radius: 999px;
    padding: 5px 12px;
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}
.badge-status-btn.active { background: rgba(16, 185, 129, 0.14); color: #059669; }
.badge-status-btn.inactive { background: rgba(148, 163, 184, 0.18); color: #64748B; }

.badge-status { padding: 4px 10px; border-radius: 999px; font-size: 0.75rem; font-weight: 800; }
.badge-status.active { background: rgba(16, 185, 129, 0.14); color: #059669; }
.badge-status.inactive { background: rgba(148, 163, 184, 0.18); color: #64748B; }

.actions-cell { display: flex; align-items: center; gap: 8px; }
.inline-form { display: inline-flex; }

.stacked-form { display: flex; flex-direction: column; gap: 16px; }

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.form-grid .span-2 { grid-column: span 2; }

.form-grid label, .stacked-form > label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
}

.form-grid input, .form-grid select, .form-grid textarea,
.stacked-form input, .stacked-form select, .stacked-form textarea {
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    font-family: var(--font);
    font-size: 0.92rem;
    color: var(--text);
    background: var(--background);
    resize: vertical;
}

.form-grid input:focus, .form-grid select:focus, .form-grid textarea:focus,
.stacked-form input:focus, .stacked-form select:focus, .stacked-form textarea:focus { outline: none; border-color: var(--primary); }

.checkbox-group { display: flex; gap: 20px; flex-wrap: wrap; }
.checkbox-label { flex-direction: row !important; align-items: center; gap: 8px !important; font-weight: 700; color: var(--text) !important; }
.checkbox-label input { width: auto; }

.settings-preview { height: 44px; margin-top: 6px; border-radius: 8px; border: 1px solid var(--border); padding: 4px; }
.settings-preview-sm { height: 32px; }

.form-actions { display: flex; gap: 10px; }

.two-col-layout {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 20px;
    align-items: start;
}

/* ---------------- Responsive ---------------- */
@media (max-width: 900px) {
    .two-col-layout { grid-template-columns: 1fr; }
}

@media (max-width: 780px) {
    .admin-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        transform: translateX(-100%);
        z-index: 100;
    }
    .admin-sidebar.open { transform: translateX(0); }
    #sidebarToggle { display: inline-flex; }
    .form-grid { grid-template-columns: 1fr; }
    .form-grid .span-2 { grid-column: span 1; }
}

@media (max-width: 640px) {
    .header-inner { height: 60px; }
    .brand-name { font-size: 1rem; }
    .hero { padding: 40px 0 24px; }
    .links-grid { grid-template-columns: 1fr; }
    .panel-header { flex-direction: column; align-items: stretch; }
    .inline-search { width: 100%; }
    .inline-search input { flex-grow: 1; min-width: 0; }
}