/* ============================================
   Admin Panel - CSS
   Design System consistente com o site principal
   ============================================ */

/* ============================================
   CSS Variables
   ============================================ */
:root {
    /* Colors - Editorial Palette */
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #c9a961;
    --color-accent-light: #d4b883;
    --color-accent-hover: #b8963f;
    --color-text: #e8e8e8;
    --color-text-light: #b0b0b0;
    --color-text-muted: #777;
    --color-background: #0f0f1e;
    --color-surface: #1a1a2e;
    --color-surface-light: #22223a;
    --color-border: #2d2d3d;
    --color-border-light: #3a3a50;

    /* Status colors */
    --color-success: #4caf50;
    --color-success-bg: rgba(76, 175, 80, 0.15);
    --color-error: #f44336;
    --color-error-bg: rgba(244, 67, 54, 0.15);
    --color-warning: #ff9800;
    --color-warning-bg: rgba(255, 152, 0, 0.15);
    --color-info: #2196f3;
    --color-info-bg: rgba(33, 150, 243, 0.15);

    /* Typography */
    --font-display: 'Crimson Pro', Georgia, serif;
    --font-body: 'DM Sans', 'Segoe UI', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);
    --shadow-glow: 0 0 20px rgba(201, 169, 97, 0.15);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;

    /* Glass */
    --glass-bg: rgba(26, 26, 46, 0.7);
    --glass-bg-light: rgba(26, 26, 46, 0.5);
    --glass-border: rgba(201, 169, 97, 0.15);
    --glass-blur: 16px;

    /* Sidebar */
    --sidebar-width: 280px;
    --sidebar-collapsed: 70px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    line-height: 1.3;
    font-weight: 600;
    color: var(--color-text);
}

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

input, textarea, select, button {
    font-family: var(--font-body);
    font-size: 1rem;
}

/* ============================================
   Background Particles
   ============================================ */
.admin-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(201, 169, 97, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(22, 33, 62, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(201, 169, 97, 0.04) 0%, transparent 50%);
}

/* ============================================
   Login Screen
   ============================================ */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--spacing-lg);
    position: relative;
}

.login-card {
    width: 100%;
    max-width: 440px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    animation: loginSlideUp 0.6s ease forwards;
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light), var(--color-accent));
}

.login-logo {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.login-logo .logo-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--spacing-sm);
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: white;
    box-shadow: 0 4px 20px rgba(201, 169, 97, 0.3);
}

.login-logo h1 {
    font-size: 1.75rem;
    margin-bottom: 0.25rem;
    color: var(--color-text);
}

.login-logo p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.login-form .form-group {
    margin-bottom: var(--spacing-md);
}

.login-form label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.login-form .input-wrapper {
    position: relative;
}

.login-form .input-wrapper i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: 1rem;
    transition: color var(--transition-fast);
}

.login-form .input-wrapper input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 2.75rem;
    background: rgba(15, 15, 30, 0.6);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: 1rem;
    transition: all var(--transition-fast);
    outline: none;
}

.login-form .input-wrapper input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.15);
}

.login-form .input-wrapper input:focus + i,
.login-form .input-wrapper input:focus ~ i {
    color: var(--color-accent);
}

.login-form .input-wrapper .toggle-password {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 1rem;
    padding: 4px;
    transition: color var(--transition-fast);
}

.login-form .input-wrapper .toggle-password:hover {
    color: var(--color-accent);
}

.login-error {
    display: none;
    padding: 0.75rem 1rem;
    background: var(--color-error-bg);
    border: 1px solid rgba(244, 67, 54, 0.3);
    border-radius: var(--radius-md);
    color: var(--color-error);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
    align-items: center;
    gap: 0.5rem;
}

.login-error.visible {
    display: flex;
}

.btn-login {
    width: 100%;
    padding: 0.875rem;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    letter-spacing: 0.5px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(201, 169, 97, 0.4);
}

.btn-login:active {
    transform: translateY(0);
}

.btn-login .spinner {
    display: none;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.btn-login.loading .spinner {
    display: inline-block;
}

.btn-login.loading .btn-text {
    display: none;
}

.login-footer {
    text-align: center;
    margin-top: var(--spacing-md);
}

.login-footer a {
    color: var(--color-accent);
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.login-footer a:hover {
    color: var(--color-accent-light);
}

/* ============================================
   Dashboard Layout
   ============================================ */
.dashboard {
    display: none;
    min-height: 100vh;
}

.dashboard.active {
    display: flex;
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.sidebar-header {
    padding: var(--spacing-lg) var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-header .logo-icon {
    width: 42px;
    height: 42px;
    min-width: 42px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
}

.sidebar-header .logo-text {
    flex: 1;
    min-width: 0;
}

.sidebar-header .logo-text h2 {
    font-size: 1rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-header .logo-text span {
    font-size: 0.75rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md) 0;
    overflow-y: auto;
}

.sidebar-nav .nav-section {
    padding: 0 var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.sidebar-nav .nav-section-title {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-text-muted);
    padding: 0 var(--spacing-sm);
    margin-bottom: 0.5rem;
}

.sidebar-nav .nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem var(--spacing-sm);
    border-radius: var(--radius-md);
    color: var(--color-text-light);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: 2px;
    position: relative;
}

.sidebar-nav .nav-item i {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
    transition: color var(--transition-fast);
}

.sidebar-nav .nav-item:hover {
    background: rgba(201, 169, 97, 0.08);
    color: var(--color-text);
}

.sidebar-nav .nav-item.active {
    background: rgba(201, 169, 97, 0.12);
    color: var(--color-accent);
}

.sidebar-nav .nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--color-accent);
    border-radius: 0 3px 3px 0;
}

.sidebar-nav .nav-item .badge {
    margin-left: auto;
    background: var(--color-accent);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar-footer .footer-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem var(--spacing-sm);
    border-radius: var(--radius-md);
    color: var(--color-text-light);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sidebar-footer .footer-link i {
    width: 24px;
    text-align: center;
    font-size: 1rem;
}

.sidebar-footer .footer-link:hover {
    background: rgba(201, 169, 97, 0.08);
    color: var(--color-text);
}

.sidebar-footer .footer-link.logout {
    color: var(--color-error);
}

.sidebar-footer .footer-link.logout:hover {
    background: var(--color-error-bg);
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(15, 15, 30, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.topbar .mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.topbar .mobile-toggle:hover {
    background: rgba(201, 169, 97, 0.1);
}

.topbar .page-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.content-area {
    padding: var(--spacing-lg);
    max-width: 1400px;
}

/* ============================================
   Section Pages
   ============================================ */
.admin-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.admin-section.active {
    display: block;
}

/* ============================================
   Cards & Glassmorphism
   ============================================ */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.glass-card:hover {
    box-shadow: var(--shadow-md);
}

/* ============================================
   Stats Cards
   ============================================ */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
    border-color: rgba(201, 169, 97, 0.3);
}

.stat-card .stat-icon {
    width: 52px;
    height: 52px;
    min-width: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.stat-card .stat-icon.books {
    background: rgba(201, 169, 97, 0.15);
    color: var(--color-accent);
}

.stat-card .stat-icon.posts {
    background: rgba(33, 150, 243, 0.15);
    color: var(--color-info);
}

.stat-card .stat-icon.published {
    background: rgba(76, 175, 80, 0.15);
    color: var(--color-success);
}

.stat-card .stat-icon.draft {
    background: rgba(255, 152, 0, 0.15);
    color: var(--color-warning);
}

.stat-card .stat-info h3 {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 0.25rem;
    color: var(--color-text);
}

.stat-card .stat-info p {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* ============================================
   Section Header with Actions
   ============================================ */
.section-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.section-top h2 {
    font-size: 1.5rem;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-family: var(--font-body);
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
    font-size: 0.9rem;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    color: white;
    box-shadow: 0 2px 10px rgba(201, 169, 97, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(201, 169, 97, 0.4);
}

.btn-secondary {
    background: rgba(201, 169, 97, 0.1);
    color: var(--color-accent);
    border: 1px solid rgba(201, 169, 97, 0.3);
}

.btn-secondary:hover {
    background: rgba(201, 169, 97, 0.2);
}

.btn-danger {
    background: var(--color-error-bg);
    color: var(--color-error);
    border: 1px solid rgba(244, 67, 54, 0.3);
}

.btn-danger:hover {
    background: rgba(244, 67, 54, 0.25);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-light);
    padding: 0.5rem 0.75rem;
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text);
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    justify-content: center;
    border-radius: var(--radius-md);
}

/* ============================================
   Data Table / List
   ============================================ */
.data-list {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
}

.data-list-header {
    display: grid;
    padding: 0.75rem var(--spacing-md);
    background: rgba(201, 169, 97, 0.06);
    border-bottom: 1px solid var(--color-border);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
}

.data-list-header.books-header,
.data-row.books-header {
    grid-template-columns: 64px 1.5fr 70px 1fr 140px;
    gap: var(--spacing-sm);
    align-items: center;
}

.data-list-header.posts-header,
.data-row.posts-header {
    grid-template-columns: 1.5fr 120px 110px 100px 140px;
    gap: var(--spacing-sm);
    align-items: center;
}

.data-list-item,
.data-row {
    display: grid;
    padding: 0.75rem var(--spacing-md);
    border-bottom: 1px solid rgba(45, 45, 61, 0.5);
    align-items: center;
    transition: background var(--transition-fast);
    min-height: 64px;
}

.data-list-item:last-child,
.data-row:last-child {
    border-bottom: none;
}

.data-list-item:hover,
.data-row:hover {
    background: rgba(201, 169, 97, 0.04);
}

.data-list-item.books-item,
.data-row.books-header:not(.data-list-header) {
    grid-template-columns: 64px 1.5fr 70px 1fr 140px;
    gap: var(--spacing-sm);
}

.data-list-item.posts-item,
.data-row.posts-header:not(.data-list-header) {
    grid-template-columns: 1.5fr 120px 110px 100px 140px;
    gap: var(--spacing-sm);
}

/* Thumbnail */
.data-row .img-cell,
.data-list-item .item-image {
    width: 48px;
    height: 64px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: rgba(201, 169, 97, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.data-row .img-cell img.thumb,
.data-list-item .item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

.data-row .thumb-placeholder {
    width: 48px;
    height: 64px;
    border-radius: var(--radius-sm);
    background: rgba(201, 169, 97, 0.08);
    border: 1px dashed rgba(201, 169, 97, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 1rem;
}

/* Text cells */
.data-row .title-cell,
.data-list-item .item-title {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.data-row .desc-col,
.data-list-item .item-desc {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.data-row .text-muted {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* Category tag */
.data-row .category-tag,
.data-list-item .item-category {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    background: rgba(201, 169, 97, 0.12);
    color: var(--color-accent);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Status badge */
.data-row .status-badge,
.data-list-item .item-status {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
}

.status-badge.published,
.data-list-item .item-status.published {
    color: var(--color-success);
    background: rgba(76, 175, 80, 0.1);
}

.status-badge.draft,
.data-list-item .item-status.draft {
    color: var(--color-warning);
    background: rgba(255, 152, 0, 0.1);
}

.data-list-item .item-status .dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: currentColor;
}

/* Action buttons */
.data-row .actions-cell,
.data-list-item .item-actions {
    display: flex;
    gap: 0.35rem;
    justify-content: flex-end;
}

.data-list-empty {
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--color-text-muted);
}

.data-list-empty i {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    opacity: 0.4;
}

.data-list-empty p {
    font-size: 0.95rem;
}

/* Reorder buttons */
.btn-reorder {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 4px;
    font-size: 0.85rem;
    transition: color var(--transition-fast);
    display: flex;
    flex-direction: column;
    gap: 0;
}

.btn-reorder:hover {
    color: var(--color-accent);
}

.btn-reorder i {
    line-height: 1;
}

/* ============================================
   Modal / Form Overlay
   ============================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    animation: fadeIn 0.2s ease;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    width: 100%;
    max-width: 640px;
    max-height: 90vh;
    background: var(--color-surface);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: modalSlideUp 0.3s ease;
}

.modal-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 1.2rem;
    font-family: var(--font-display);
}

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.05);
    border: none;
    color: var(--color-text-light);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* ============================================
   Form Styles
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-light);
    margin-bottom: 0.4rem;
}

.form-group label .required {
    color: var(--color-error);
}

.form-control {
    width: 100%;
    padding: 0.7rem 1rem;
    background: rgba(15, 15, 30, 0.5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    outline: none;
}

.form-control:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.12);
}

.form-control::placeholder {
    color: var(--color-text-muted);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
    font-family: var(--font-body);
    line-height: 1.6;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.form-error {
    font-size: 0.8rem;
    color: var(--color-error);
    margin-top: 0.3rem;
    display: none;
}

.form-control.error {
    border-color: var(--color-error);
}

.form-control.error + .form-error {
    display: block;
}

/* ============================================
   Rich Text Toolbar
   ============================================ */
.editor-toolbar {
    display: flex;
    gap: 0.25rem;
    padding: 0.5rem;
    background: rgba(15, 15, 30, 0.5);
    border: 1px solid var(--color-border);
    border-bottom: none;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    flex-wrap: wrap;
}

.editor-toolbar button {
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-text-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.editor-toolbar button:hover {
    background: rgba(201, 169, 97, 0.15);
    color: var(--color-accent);
}

.editor-toolbar .separator {
    width: 1px;
    background: var(--color-border);
    margin: 0 0.25rem;
}

textarea.editor-content {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    border-top: none;
    min-height: 200px;
}

/* ============================================
   Confirm Dialog
   ============================================ */
.confirm-dialog {
    max-width: 420px;
}

.confirm-dialog .modal-body {
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-xl);
}

.confirm-dialog .confirm-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    border-radius: var(--radius-full);
    background: var(--color-error-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-error);
}

.confirm-dialog .confirm-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.confirm-dialog .confirm-text {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.confirm-dialog .modal-footer {
    justify-content: center;
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 380px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.25rem;
    border-radius: var(--radius-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    animation: toastSlideIn 0.3s ease;
    position: relative;
    overflow: hidden;
}

.toast::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
}

.toast.success::before { background: var(--color-success); }
.toast.error::before { background: var(--color-error); }
.toast.warning::before { background: var(--color-warning); }
.toast.info::before { background: var(--color-info); }

.toast .toast-icon {
    font-size: 1.1rem;
    min-width: 20px;
    text-align: center;
}

.toast.success .toast-icon { color: var(--color-success); }
.toast.error .toast-icon { color: var(--color-error); }
.toast.warning .toast-icon { color: var(--color-warning); }
.toast.info .toast-icon { color: var(--color-info); }

.toast .toast-content {
    flex: 1;
    min-width: 0;
}

.toast .toast-title {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.15rem;
}

.toast .toast-message {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

.toast .toast-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 4px;
    transition: color var(--transition-fast);
}

.toast .toast-close:hover {
    color: var(--color-text);
}

.toast .toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: var(--color-accent);
    animation: toastProgress 4s linear forwards;
}

.toast.removing {
    animation: toastSlideOut 0.3s ease forwards;
}

/* ============================================
   Mobile sidebar overlay
   ============================================ */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
    display: none;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* ============================================
   Animations
   ============================================ */
@keyframes loginSlideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes toastSlideOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

@keyframes toastProgress {
    from { width: 100%; }
    to { width: 0%; }
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
    .data-list-header.books-header,
    .data-list-item.books-item {
        grid-template-columns: 50px 1fr 60px 120px;
    }

    .data-list-header.books-header .desc-col,
    .data-list-item.books-item .item-desc {
        display: none;
    }

    .data-list-header.posts-header,
    .data-list-item.posts-item {
        grid-template-columns: 1fr 100px 90px 120px;
    }

    .data-list-header.posts-header .date-col,
    .data-list-item.posts-item .item-date {
        display: none;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }

    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .topbar .mobile-toggle {
        display: flex;
    }

    .content-area {
        padding: var(--spacing-md);
    }

    .stats-row {
        grid-template-columns: 1fr 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .modal {
        max-height: 95vh;
        margin: var(--spacing-sm);
    }

    .modal-overlay {
        padding: var(--spacing-sm);
    }

    /* Mobile data list */
    .data-list-header {
        display: none;
    }

    .data-list-item.books-item,
    .data-list-item.posts-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        padding: var(--spacing-sm);
    }

    .data-list-item .item-actions {
        justify-content: flex-start;
        padding-top: 0.5rem;
        border-top: 1px solid rgba(45, 45, 61, 0.3);
    }

    .section-top {
        flex-direction: column;
        align-items: stretch;
    }

    .section-top .btn {
        justify-content: center;
    }

    .topbar {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .topbar .page-title {
        font-size: 1.2rem;
    }

    .login-card {
        padding: var(--spacing-lg);
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .stats-row {
        grid-template-columns: 1fr;
    }

    .toast-container {
        left: 10px;
        right: 10px;
        max-width: none;
    }
}

/* ============================================
   Scrollbar Styling
   ============================================ */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(201, 169, 97, 0.3);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(201, 169, 97, 0.5);
}

/* ============================================
   Selection Color
   ============================================ */
::selection {
    background: rgba(201, 169, 97, 0.3);
    color: var(--color-text);
}

/* ============================================
   Drag and Drop
   ============================================ */
.data-list-item.dragging {
    opacity: 0.5;
    background: rgba(201, 169, 97, 0.08);
}

.data-list-item.drag-over {
    border-top: 2px solid var(--color-accent);
}

/* ============================================
   Toggle Switch (Publish/Unpublish)
   ============================================ */
.toggle-switch {
    position: relative;
    width: 40px;
    height: 22px;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-border);
    border-radius: 11px;
    transition: all var(--transition-fast);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    left: 3px;
    top: 3px;
    background: white;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--color-success);
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(18px);
}

/* ============================================
   Image Upload Area
   ============================================ */
.image-upload-area {
    border: 2px dashed rgba(201, 169, 97, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    background: rgba(201, 169, 97, 0.03);
    position: relative;
    min-height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-upload-area:hover,
.image-upload-area.dragover {
    border-color: var(--color-accent);
    background: rgba(201, 169, 97, 0.08);
    box-shadow: 0 0 0 4px rgba(201, 169, 97, 0.08);
}

.image-upload-area.dragover {
    transform: scale(1.01);
}

.image-upload-prompt {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-muted);
}

.image-upload-prompt i {
    font-size: 2.2rem;
    color: var(--color-accent);
    opacity: 0.6;
}

.image-upload-prompt p {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-light);
}

.image-upload-prompt span {
    font-size: 0.75rem;
    opacity: 0.6;
}

/* Image Preview */
.image-preview {
    position: relative;
    width: 100%;
    max-width: 200px;
}

.image-preview img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.image-remove-btn {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: none;
    background: var(--color-error);
    color: white;
    font-size: 0.75rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(244, 67, 54, 0.4);
    transition: all var(--transition-fast);
}

.image-remove-btn:hover {
    transform: scale(1.1);
    background: #d32f2f;
}

/* URL Fallback */
.image-url-fallback {
    margin-top: 0.5rem;
}

.image-url-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: var(--color-accent);
    cursor: pointer;
    padding: 0.25rem 0;
    transition: opacity var(--transition-fast);
}

.image-url-toggle:hover {
    opacity: 0.8;
}

.image-url-fallback .form-control {
    margin-top: 0.4rem;
}

/* ============================================
   has-error state for form groups
   ============================================ */
.form-group.has-error .form-control {
    border-color: var(--color-error);
}

.form-group.has-error .form-error {
    display: block;
}

/* data-empty for empty lists */
.data-empty {
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--color-text-muted);
}

.data-empty i {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    opacity: 0.4;
    display: block;
}

.data-empty p {
    font-size: 0.95rem;
}