/**
 * Marketplace CMS - Admin Styles
 */

/* ============================================
   Variables
   ============================================ */
:root {
    /* Colors */
    --color-primary: #667eea;
    --color-primary-dark: #5a67d8;
    --color-secondary: #764ba2;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;

    /* Neutrals */
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Layout */
    --sidebar-width: 260px;
    --topbar-height: 64px;
    --border-radius: 8px;
    --border-radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition: 0.2s ease;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--color-gray-700);
    background-color: var(--color-gray-100);
}

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

a:hover {
    color: var(--color-primary-dark);
}

/* ============================================
   Layout
   ============================================ */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
    color: white;
    display: flex;
    flex-direction: column;
    z-index: 100;
    overflow-y: auto;
}

.sidebar__brand {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar__brand h1 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar__brand span {
    font-size: 0.75rem;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.sidebar__nav {
    flex: 1;
    padding: 1rem 0;
}

.sidebar__nav ul {
    list-style: none;
}

.sidebar__nav li a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--color-gray-300);
    transition: var(--transition);
}

.sidebar__nav li a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.05);
}

.sidebar__nav li.active a {
    color: white;
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.2) 0%, transparent 100%);
    border-left: 3px solid var(--color-primary);
}

.sidebar__nav li a svg {
    flex-shrink: 0;
    opacity: 0.7;
}

.sidebar__nav li.active a svg,
.sidebar__nav li a:hover svg {
    opacity: 1;
}

.sidebar__section-title {
    padding: 1.5rem 1.5rem 0.5rem;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray-500);
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
}

/* ============================================
   Topbar
   ============================================ */
.topbar {
    position: sticky;
    top: 0;
    height: var(--topbar-height);
    background: white;
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    z-index: 50;
}

.topbar__search {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-gray-100);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    width: 300px;
}

.topbar__search svg {
    color: var(--color-gray-400);
    flex-shrink: 0;
}

.topbar__search input {
    border: none;
    background: none;
    outline: none;
    font-size: 0.875rem;
    color: var(--color-gray-700);
    width: 100%;
}

.topbar__search input::placeholder {
    color: var(--color-gray-400);
}

.topbar__actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.topbar__notification {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--color-gray-100);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-600);
    transition: var(--transition);
}

.topbar__notification:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-800);
}

.topbar__user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.topbar__user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.topbar__user-info {
    display: flex;
    flex-direction: column;
}

.topbar__user-name {
    font-weight: 600;
    color: var(--color-gray-800);
    font-size: 0.875rem;
}

.topbar__user-role {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.topbar__logout {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-400);
    transition: var(--transition);
}

.topbar__logout:hover {
    background: var(--color-gray-100);
    color: var(--color-danger);
}

/* ============================================
   Content Area
   ============================================ */
.content {
    flex: 1;
    padding: 1.5rem;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-gray-900);
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card__header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card__header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-800);
}

.card__body {
    padding: 1.5rem;
}

/* ============================================
   Stats Grid
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.stat-card__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-card__icon--primary {
    background: rgba(102, 126, 234, 0.1);
    color: var(--color-primary);
}

.stat-card__icon--success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.stat-card__icon--warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
}

.stat-card__icon--info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-info);
}

.stat-card__content {
    flex: 1;
}

.stat-card__label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-bottom: 0.25rem;
}

.stat-card__value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-gray-900);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
}

.btn--primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    color: white;
}

.btn--secondary {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

.btn--secondary:hover {
    background: var(--color-gray-200);
}

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

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

.btn--sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn--lg {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
}

/* ============================================
   Tables
   ============================================ */
.table-wrapper {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-gray-100);
}

.table th {
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-500);
    background: var(--color-gray-50);
}

.table tbody tr:hover {
    background: var(--color-gray-50);
}

.table td {
    color: var(--color-gray-700);
}

/* ============================================
   Status Badges
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge--success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.badge--warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
}

.badge--danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
}

.badge--info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-info);
}

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-gray-700);
    font-size: 0.875rem;
}

.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    color: var(--color-gray-700);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-control::placeholder {
    color: var(--color-gray-400);
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M2.5 4.5l3.5 3.5 3.5-3.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

/* ============================================
   Alerts
   ============================================ */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.alert--success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert--warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.alert--danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert--info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-info);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
}

.empty-state__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    color: var(--color-gray-300);
}

.empty-state__title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: 0.5rem;
}

.empty-state__text {
    color: var(--color-gray-500);
    margin-bottom: 1.5rem;
}

/* ============================================
   Grid Layouts
   ============================================ */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition);
    }

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

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

    .grid--3,
    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .topbar__search {
        display: none;
    }

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

    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}