/* ============================================================
   ADMIN.CSS - Trang quản trị (Premium Edition)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500;600;700&family=Great+Vibes&family=Be+Vietnam+Pro:wght@300;400;500;600;700&display=swap');

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

:root {
    --c-primary: #8b2c3a;
    --c-secondary: #b8485a;
    --c-accent: #f5e6e8;
    --c-bg: #faf8f9;
    --c-text: #3d2024;
    --c-text-light: #8a7078;
    --c-gold: #c9a227;
    --c-grey: #6b6b6b;
    --c-border: #e8e0e2;
    --c-white: #ffffff;
    --c-danger: #c62828;
    --c-success: #2e7d32;
    --c-link: #1976d2;
    --font-title: 'Great Vibes', cursive;
    --font-serif: 'Cormorant Garamond', serif;
    --font-body: 'Be Vietnam Pro', sans-serif;
    --shadow-sm: 0 1px 4px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
    --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

body {
    font-family: var(--font-body);
    color: var(--c-text);
    background: var(--c-bg);
    -webkit-font-smoothing: antialiased;
}

/* --- Login --- */
.login-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('https://images.pexels.com/photos/273941/pexels-photo-273941.jpeg?auto=compress&cs=tinysrgb&w=1920') center/cover;
    position: relative;
}
.login-body::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(253,246,247,0.92);
}
.login-container {
    width: 100%;
    max-width: 440px;
    padding: 20px;
    position: relative;
    z-index: 1;
}
.login-card {
    background: #fff;
    border-radius: 4px;
    padding: 48px 36px;
    box-shadow: 0 24px 80px rgba(139,44,58,0.12);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--c-primary), var(--c-gold));
}
.login-ornament {
    color: var(--c-primary);
    margin-bottom: 20px;
    opacity: 0.4;
}
.login-title {
    font-family: var(--font-serif);
    font-size: 28px;
    color: var(--c-primary);
    margin-bottom: 4px;
    font-weight: 600;
    letter-spacing: 1px;
}
.login-brand {
    font-family: var(--font-title);
    font-size: 36px;
    color: var(--c-gold);
    margin-bottom: 32px;
}
.login-error {
    background: #fef2f3;
    color: var(--c-danger);
    padding: 12px 16px;
    border-radius: 4px;
    font-size: 13px;
    margin-bottom: 16px;
    border: 1px solid rgba(198,40,40,0.1);
}
.login-locked {
    background: #fff8e1;
    color: #e65100;
    border-color: rgba(230,81,0,0.1);
}
.login-form { text-align: left; }
.login-form .form-group { margin-bottom: 24px; }
.login-form label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--c-text);
    letter-spacing: 0.5px;
}
.login-form input {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--c-border);
    border-radius: 4px;
    font-size: 15px;
    font-family: var(--font-body);
    transition: all var(--transition);
    background: var(--c-bg);
}
.login-form input:focus {
    outline: none;
    border-color: var(--c-primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(139,44,58,0.08);
}
.login-home-link {
    display: block;
    margin-top: 24px;
    color: var(--c-text-light);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s;
}
.login-home-link:hover { color: var(--c-primary); }

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 24px;
    border: none;
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    letter-spacing: 0.5px;
}
.btn-primary {
    background: var(--c-primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(139,44,58,0.15);
}
.btn-primary:hover {
    background: #6d2230;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(139,44,58,0.2);
}
.btn-outline {
    background: #fff;
    color: var(--c-primary);
    border: 1px solid var(--c-primary);
}
.btn-outline:hover {
    background: var(--c-primary);
    color: #fff;
}
.btn-secondary {
    background: linear-gradient(135deg, var(--c-gold), #d4af37);
    color: #fff;
}
.btn-secondary:hover { background: #b08e1e; }
.btn-danger { background: var(--c-danger); color: #fff; }
.btn-danger:hover { background: #b71c1c; }
.btn-sm { padding: 6px 14px; font-size: 12px; }
.btn-full { width: 100%; }
.btn-preview { border-color: var(--c-gold); color: var(--c-gold); }
.btn-preview:hover { background: var(--c-gold); color: #fff; }

/* --- Admin layout --- */
.admin-header {
    background: #fff;
    border-bottom: 1px solid var(--c-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}
.admin-header-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.admin-logo-title {
    font-family: var(--font-title);
    font-size: 26px;
    color: var(--c-primary);
    display: block;
    line-height: 1;
}
.admin-logo-sub {
    font-size: 11px;
    color: var(--c-text-light);
    letter-spacing: 2px;
    text-transform: uppercase;
}
.admin-header-actions { display: flex; gap: 10px; }

.admin-main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 32px 24px 80px;
}

/* --- Guide section --- */
.guide-section {
    background: #fff;
    border-radius: 4px;
    padding: 28px 32px;
    margin-bottom: 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--c-border);
}
.guide-title {
    font-family: var(--font-serif);
    font-size: 24px;
    color: var(--c-primary);
    margin-bottom: 20px;
    font-weight: 600;
}
.guide-steps {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 14px;
}
.guide-step {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 14px 16px;
    background: var(--c-bg);
    border-radius: 4px;
    border: 1px solid var(--c-border);
    transition: all var(--transition);
}
.guide-step:hover {
    border-color: var(--c-gold);
    background: #fff;
}
.step-num {
    background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
    color: #fff;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    flex-shrink: 0;
}
.guide-step p { font-size: 13px; line-height: 1.6; color: var(--c-text); }
.inline-link { color: var(--c-link); text-decoration: none; font-weight: 500; }
.inline-link:hover { text-decoration: underline; }

/* --- Form section --- */
.form-section, .cards-list-section, .bulk-section, .password-section {
    background: #fff;
    border-radius: 4px;
    padding: 28px 32px;
    margin-bottom: 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--c-border);
}
.form-section-title {
    font-family: var(--font-serif);
    font-size: 24px;
    color: var(--c-primary);
    margin-bottom: 24px;
    font-weight: 600;
}
.form-block {
    margin-bottom: 32px;
    padding-bottom: 28px;
    border-bottom: 1px solid #f0edee;
}
.form-block:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.form-block-title {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--c-primary);
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 18px;
}
.form-group { margin-bottom: 14px; }
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--c-text);
}
.form-input {
    width: 100%;
    padding: 11px 16px;
    border: 1px solid var(--c-border);
    border-radius: 4px;
    font-size: 14px;
    font-family: var(--font-body);
    transition: all var(--transition);
    background: var(--c-bg);
}
.form-input:focus {
    outline: none;
    border-color: var(--c-primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(139,44,58,0.06);
}
textarea.form-input { resize: vertical; min-height: 70px; }
.form-hint { font-size: 13px; color: var(--c-text-light); margin-top: 8px; }
.form-error { color: var(--c-danger); font-size: 13px; margin-top: 6px; }
.form-status { font-size: 14px; margin-top: 14px; }
.form-status.success { color: var(--c-success); }
.form-status.error { color: var(--c-danger); }
.form-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* --- Upload area --- */
.upload-area { margin-bottom: 18px; }
.upload-placeholder {
    border: 2px dashed var(--c-border);
    border-radius: 4px;
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    color: var(--c-text-light);
    background: var(--c-bg);
}
.upload-placeholder:hover {
    border-color: var(--c-primary);
    background: var(--c-accent);
    color: var(--c-primary);
}
.upload-placeholder p {
    margin: 12px 0 4px;
    font-size: 15px;
    color: var(--c-primary);
    font-weight: 500;
}
.upload-placeholder span { font-size: 12px; color: var(--c-text-light); }

.image-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
}
.image-preview-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    cursor: move;
    border: 2px solid transparent;
    transition: border 0.2s, box-shadow 0.2s;
}
.image-preview-item:hover { box-shadow: var(--shadow-md); }
.image-preview-item.dragging { border-color: var(--c-primary); opacity: 0.5; }
.image-preview-item.drag-over { border-color: var(--c-gold); }
.image-preview-item img { width: 100%; height: 100%; object-fit: cover; }
.img-delete {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: rgba(198,40,40,0.9);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}
.img-delete:hover { background: var(--c-danger); }
.img-drag-handle {
    position: absolute;
    bottom: 6px;
    left: 6px;
    background: rgba(0,0,0,0.5);
    color: #fff;
    border-radius: 3px;
    padding: 3px 7px;
    font-size: 14px;
    cursor: grab;
}

/* --- Menu items --- */
.menu-item-row {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 14px;
    background: var(--c-bg);
    border-radius: 4px;
    margin-bottom: 12px;
    border: 1px solid var(--c-border);
}
.menu-item-img {
    width: 90px;
    height: 90px;
    border-radius: 4px;
    overflow: hidden;
    flex-shrink: 0;
    position: relative;
    background: #fff;
    border: 1px solid var(--c-border);
}
.menu-item-img img { width: 100%; height: 100%; object-fit: cover; }
.menu-item-img .btn { margin-top: 4px; font-size: 11px; padding: 4px 10px; }
.menu-item-info { flex: 1; }
.menu-item-info input, .menu-item-info textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--c-border);
    border-radius: 4px;
    font-size: 14px;
    font-family: var(--font-body);
    margin-bottom: 6px;
    background: #fff;
    transition: border 0.2s;
}
.menu-item-info input:focus, .menu-item-info textarea:focus {
    outline: none;
    border-color: var(--c-primary);
}
.menu-item-info textarea { resize: vertical; min-height: 42px; }
.menu-item-delete {
    width: 34px;
    height: 34px;
    border-radius: 4px;
    background: rgba(198,40,40,0.08);
    color: var(--c-danger);
    border: none;
    cursor: pointer;
    font-size: 18px;
    flex-shrink: 0;
    transition: all 0.2s;
}
.menu-item-delete:hover { background: var(--c-danger); color: #fff; }

/* --- Theme selector --- */
.theme-selector {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 14px;
}
.theme-option {
    padding: 14px;
    border: 2px solid var(--c-border);
    border-radius: 4px;
    cursor: pointer;
    text-align: center;
    transition: all var(--transition);
}
.theme-option:hover { border-color: var(--c-gold); }
.theme-option.selected {
    border-color: var(--c-primary);
    background: var(--c-accent);
}
.theme-colors {
    display: flex;
    gap: 5px;
    justify-content: center;
    margin-bottom: 10px;
}
.theme-colors span {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 2px solid #fff;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}
.theme-name { font-size: 13px; font-weight: 500; color: var(--c-text); }

/* --- Cards table --- */
.cards-table-wrap { overflow-x: auto; }
.cards-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
.cards-table th {
    background: var(--c-bg);
    padding: 14px 16px;
    text-align: left;
    color: var(--c-primary);
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--c-border);
}
.cards-table td {
    padding: 14px 16px;
    border-bottom: 1px solid #f0edee;
}
.cards-table tr:hover td { background: var(--c-bg); }
.cards-table a { color: var(--c-link); text-decoration: none; }
.cards-table a:hover { text-decoration: underline; }
.cards-table-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.status-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}
.status-completed { background: #e8f5e9; color: var(--c-success); }
.status-draft { background: #fff8e1; color: #e65100; }
.empty-state { text-align: center; padding: 32px; color: var(--c-text-light); font-style: italic; }

/* --- Bulk --- */
.bulk-result { margin-top: 18px; }
.bulk-result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background: var(--c-bg);
    border-radius: 4px;
    margin-bottom: 8px;
    font-size: 14px;
    border: 1px solid var(--c-border);
}
.bulk-result-item a { color: var(--c-link); text-decoration: none; }

/* --- Password section --- */
.password-form { max-width: 420px; }
.password-form .form-group { margin-bottom: 18px; }

/* --- Modal --- */
.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}
.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
}
.modal-content {
    position: relative;
    background: #fff;
    border-radius: 4px;
    padding: 36px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    text-align: center;
    box-shadow: 0 24px 80px rgba(0,0,0,0.2);
    animation: modalIn 0.4s ease;
}
@keyframes modalIn {
    from { opacity: 0; transform: scale(0.9) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-close {
    position: absolute;
    top: 14px;
    right: 18px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--c-text-light);
    transition: color 0.2s;
}
.modal-close:hover { color: var(--c-primary); }
.modal-content h3 {
    font-family: var(--font-serif);
    font-size: 24px;
    color: var(--c-primary);
    margin-bottom: 24px;
    font-weight: 600;
}

/* --- Responsive --- */
@media (max-width: 600px) {
    .admin-header-content { flex-direction: column; gap: 10px; }
    .admin-main { padding: 20px 16px 60px; }
    .form-grid { grid-template-columns: 1fr; }
    .guide-steps { grid-template-columns: 1fr; }
    .theme-selector { grid-template-columns: repeat(2, 1fr); }
    .form-actions { flex-direction: column; }
    .form-actions .btn { width: 100%; }
    .menu-item-row { flex-direction: column; }
    .menu-item-img { width: 100%; height: 140px; }
    .cards-table { font-size: 12px; }
    .cards-table th, .cards-table td { padding: 10px 8px; }
    .form-section, .cards-list-section, .bulk-section, .password-section, .guide-section {
        padding: 20px 18px;
    }
}