/* ============================================================================
   MK Universal Catalog Pro V1
   File: admin/assets/css/admin.css
   Purpose: Complete design system for the entire admin panel. Every admin
            page (login, dashboard, all CRUD modules) links this single
            stylesheet. Mobile-first, same design-token approach as the
            storefront themes but with its own dark-sidebar admin identity.
   ============================================================================ */

/* ----------------------------------------------------------------------------
   1. DESIGN TOKENS
   ---------------------------------------------------------------------------- */
:root {
    --admin-accent: #0071e3;
    --admin-accent-hover: #0077ed;
    --admin-sidebar-bg: #14141a;
    --admin-sidebar-text: #b8b8bf;
    --admin-sidebar-text-active: #ffffff;
    --admin-bg: #f5f5f7;
    --admin-card-bg: #ffffff;
    --admin-text: #1d1d1f;
    --admin-muted: #6e6e73;
    --admin-border: #e2e2e6;
    --admin-success: #1d8a3e;
    --admin-success-bg: #e6f7ec;
    --admin-danger: #d70015;
    --admin-danger-bg: #fdecec;
    --admin-warning: #a35a00;
    --admin-warning-bg: #fff3e0;

    --admin-radius-sm: 8px;
    --admin-radius-md: 14px;
    --admin-sidebar-width: 240px;
    --admin-topbar-height: 60px;
    --admin-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    --admin-transition: 0.2s ease;
}

/* ----------------------------------------------------------------------------
   2. RESET & BASE
   ---------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--admin-bg);
    color: var(--admin-text);
    font-size: 0.95rem;
    line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { margin: 0 0 0.5rem; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0 0 0.75rem; }
table { border-collapse: collapse; width: 100%; }

/* ----------------------------------------------------------------------------
   3. LOGIN SCREEN
   ---------------------------------------------------------------------------- */
.admin-login-body {
    background: radial-gradient(circle at top, #1c1c22, #0b0b0f 65%);
}
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}
.login-card {
    background: var(--admin-card-bg);
    width: 100%;
    max-width: 400px;
    border-radius: 20px;
    padding: 2.5rem 2rem;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
}
.login-brand { text-align: center; margin-bottom: 1.75rem; }
.login-brand h1 { font-size: 1.4rem; margin-bottom: 0.15rem; }
.login-brand p { color: var(--admin-muted); font-size: 0.875rem; margin: 0; }

/* ----------------------------------------------------------------------------
   4. SHARED FORM ELEMENTS
   ---------------------------------------------------------------------------- */
.form-group { margin-bottom: 1.1rem; }
.form-label { display: block; font-size: 0.85rem; font-weight: 500; margin-bottom: 0.4rem; }
.form-control {
    width: 100%;
    padding: 0.65rem 0.9rem;
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-sm);
    background: var(--admin-bg);
    font-size: 0.9rem;
    transition: border-color var(--admin-transition), background var(--admin-transition);
}
.form-control:focus { outline: none; border-color: var(--admin-accent); background: #fff; }
textarea.form-control { resize: vertical; min-height: 100px; }
.form-hint { font-size: 0.8rem; color: var(--admin-muted); margin-top: 0.3rem; }
.form-row { display: grid; grid-template-columns: 1fr; gap: 1rem; }

/* ----------------------------------------------------------------------------
   5. BUTTONS
   ---------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.65rem 1.4rem;
    border-radius: var(--admin-radius-sm);
    border: 1px solid transparent;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--admin-transition), transform var(--admin-transition);
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--admin-accent); color: #fff; }
.btn-primary:hover { background: var(--admin-accent-hover); }
.btn-secondary { background: var(--admin-bg); color: var(--admin-text); border-color: var(--admin-border); }
.btn-secondary:hover { background: #ececef; }
.btn-danger { background: var(--admin-danger); color: #fff; }
.btn-danger:hover { background: #b60012; }
.btn-sm { padding: 0.4rem 0.9rem; font-size: 0.8rem; }
.btn-block { width: 100%; }
.btn-icon { padding: 0.5rem; }

/* ----------------------------------------------------------------------------
   6. ALERTS & BADGES
   ---------------------------------------------------------------------------- */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--admin-radius-sm);
    font-size: 0.875rem;
    margin-bottom: 1.1rem;
}
.alert-success { background: var(--admin-success-bg); color: var(--admin-success); }
.alert-error { background: var(--admin-danger-bg); color: var(--admin-danger); }
.alert-warning { background: var(--admin-warning-bg); color: var(--admin-warning); }

.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-active, .badge-success { background: var(--admin-success-bg); color: var(--admin-success); }
.badge-inactive, .badge-danger { background: var(--admin-danger-bg); color: var(--admin-danger); }
.badge-neutral { background: var(--admin-bg); color: var(--admin-muted); }

/* ----------------------------------------------------------------------------
   7. LAYOUT SHELL: SIDEBAR + TOPBAR + MAIN
   ---------------------------------------------------------------------------- */
.admin-shell { min-height: 100vh; }

.admin-sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: var(--admin-sidebar-width);
    background: var(--admin-sidebar-bg);
    color: var(--admin-sidebar-text);
    display: flex;
    flex-direction: column;
    z-index: 200;
    transform: translateX(-100%);
    transition: transform var(--admin-transition);
    overflow-y: auto;
}
.admin-sidebar.is-open { transform: translateX(0); }

.admin-sidebar-brand {
    padding: 1.25rem 1.5rem;
    font-size: 1.05rem;
    font-weight: 700;
    color: #fff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.admin-sidebar-brand span { display: block; font-size: 0.75rem; font-weight: 400; color: var(--admin-sidebar-text); margin-top: 0.15rem; }

.admin-nav { padding: 0.75rem; flex: 1; }
.admin-nav-group { margin-bottom: 1rem; }
.admin-nav-group-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #6d6d75;
    padding: 0.5rem 0.75rem 0.25rem;
}
.admin-nav a {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 0.75rem;
    border-radius: var(--admin-radius-sm);
    font-size: 0.875rem;
    transition: background var(--admin-transition), color var(--admin-transition);
}
.admin-nav a:hover { background: rgba(255, 255, 255, 0.06); color: var(--admin-sidebar-text-active); }
.admin-nav a.is-active { background: var(--admin-accent); color: #fff; }

.admin-sidebar-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.8rem;
}
.admin-sidebar-footer a { color: var(--admin-sidebar-text); display: block; padding: 0.3rem 0; }
.admin-sidebar-footer a:hover { color: #fff; }

.admin-topbar {
    height: var(--admin-topbar-height);
    background: var(--admin-card-bg);
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
    position: sticky;
    top: 0;
    z-index: 100;
}
.admin-topbar-title { font-size: 1.05rem; font-weight: 600; }
.admin-topbar-actions { display: flex; align-items: center; gap: 0.75rem; }
.admin-sidebar-toggle {
    background: none; border: none; cursor: pointer;
    display: inline-flex; align-items: center; justify-content: center;
    width: 38px; height: 38px; border-radius: 50%;
    color: var(--admin-text);
}
.admin-sidebar-toggle:hover { background: var(--admin-bg); }

.admin-main { padding: 1.5rem; }

.admin-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 150;
}
.admin-overlay.is-visible { display: block; }

/* ----------------------------------------------------------------------------
   8. CARDS & STAT WIDGETS (Dashboard)
   ---------------------------------------------------------------------------- */
.admin-card {
    background: var(--admin-card-bg);
    border-radius: var(--admin-radius-md);
    box-shadow: var(--admin-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.admin-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}
.admin-card-header h3 { margin: 0; font-size: 1rem; }

.stat-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; margin-bottom: 1.5rem; }
.stat-card {
    background: var(--admin-card-bg);
    border-radius: var(--admin-radius-md);
    box-shadow: var(--admin-shadow);
    padding: 1.25rem;
}
a.stat-card {
    display: block;
    color: inherit;
    text-decoration: none;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}
a.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(0,0,0,0.1);
}
.stat-card-label { font-size: 0.8rem; color: var(--admin-muted); margin-bottom: 0.3rem; }
.stat-card-value { font-size: 1.75rem; font-weight: 700; }
.stat-card-icon {
    width: 40px; height: 40px; border-radius: 10px;
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--admin-bg); margin-bottom: 0.75rem;
}

/* ----------------------------------------------------------------------------
   9. DATA TABLES
   ---------------------------------------------------------------------------- */
.table-wrap { overflow-x: auto; }
.data-table { min-width: 640px; }
.data-table th, .data-table td {
    text-align: left;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--admin-border);
    font-size: 0.875rem;
    white-space: nowrap;
}
.data-table th { color: var(--admin-muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; }
.data-table tbody tr:hover { background: var(--admin-bg); }
.data-table img.thumb { width: 40px; height: 40px; border-radius: 8px; object-fit: cover; }
.table-actions { display: flex; gap: 0.4rem; }

.empty-row td { text-align: center; padding: 2.5rem 1rem; color: var(--admin-muted); }

/* ----------------------------------------------------------------------------
   10. MODALS (delete confirmation, quick view)
   ---------------------------------------------------------------------------- */
.modal-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
    z-index: 300;
    padding: 1rem;
}
.modal-overlay.is-visible { display: flex; }
.modal-box {
    background: #fff;
    border-radius: var(--admin-radius-md);
    padding: 1.75rem;
    max-width: 420px;
    width: 100%;
}
.modal-actions { display: flex; gap: 0.75rem; margin-top: 1.5rem; }

/* ----------------------------------------------------------------------------
   11. THEME MANAGER GRID
   ---------------------------------------------------------------------------- */
.theme-grid { display: grid; grid-template-columns: 1fr; gap: 1.25rem; }
.theme-card {
    background: var(--admin-card-bg);
    border-radius: var(--admin-radius-md);
    box-shadow: var(--admin-shadow);
    overflow: hidden;
    border: 2px solid transparent;
}
.theme-card.is-active { border-color: var(--admin-accent); }
.theme-card-preview {
    aspect-ratio: 16 / 10;
    background: var(--admin-bg);
    display: flex; align-items: center; justify-content: center;
    color: var(--admin-muted);
    font-size: 0.8rem;
}
.theme-card-preview img { width: 100%; height: 100%; object-fit: cover; }
.theme-card-body { padding: 1rem 1.25rem; }
.theme-card-body h4 { margin-bottom: 0.25rem; }
.theme-card-body p { font-size: 0.825rem; color: var(--admin-muted); }
.theme-card-footer { padding: 0 1.25rem 1.25rem; }

/* ----------------------------------------------------------------------------
   12. MEDIA LIBRARY GRID
   ---------------------------------------------------------------------------- */
.media-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.9rem; }
.media-item {
    position: relative;
    aspect-ratio: 1 / 1;
    border-radius: var(--admin-radius-sm);
    overflow: hidden;
    background: var(--admin-bg);
    border: 1px solid var(--admin-border);
}
.media-item img { width: 100%; height: 100%; object-fit: cover; }
.media-item-select {
    position: absolute; top: 6px; right: 6px;
}
.upload-dropzone {
    border: 2px dashed var(--admin-border);
    border-radius: var(--admin-radius-md);
    padding: 2rem 1rem;
    text-align: center;
    color: var(--admin-muted);
    margin-bottom: 1.5rem;
    transition: border-color var(--admin-transition), background var(--admin-transition);
}
.upload-dropzone.is-dragover { border-color: var(--admin-accent); background: #eef6ff; }

/* ----------------------------------------------------------------------------
   13. UTILITIES
   ---------------------------------------------------------------------------- */
.text-muted { color: var(--admin-muted); }
.text-center { text-align: center; }
.d-flex { display: flex; }
.gap-2 { gap: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mb-0 { margin-bottom: 0; }

/* ----------------------------------------------------------------------------
   14. RESPONSIVE BREAKPOINTS (mobile-first)
   ---------------------------------------------------------------------------- */
@media (min-width: 560px) {
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .media-grid { grid-template-columns: repeat(3, 1fr); }
    .form-row-2 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
    .theme-grid { grid-template-columns: repeat(2, 1fr); }
    .media-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1024px) {
    .admin-sidebar { transform: translateX(0); }
    .admin-sidebar-toggle { display: none; }
    .admin-main-wrap { margin-left: var(--admin-sidebar-width); }
    .admin-topbar { padding-left: 1.5rem; }
    .stat-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
    .theme-grid { grid-template-columns: repeat(3, 1fr); }
}