/* ============================================
   ADMIN PANEL — Design System
   ============================================ */
:root {
    --color-bg: #F8F8F6;
    --color-bg-alt: #F0EFEC;
    --color-surface: #FFFFFF;
    --color-surface-hover: #FAFAF8;
    --color-border: rgba(0,0,0,0.06);
    --color-border-strong: rgba(0,0,0,0.12);
    --color-text: #1A1A1A;
    --color-text-secondary: #6B6B6B;
    --color-text-tertiary: #9B9B9B;
    --color-accent: #2C2C2C;
    --color-accent-soft: #E8E6E1;
    --color-accent-warm: #C4A882;
    --color-accent-warm-soft: rgba(196,168,130,0.12);
    --color-primary: #3B82F6;
    --color-primary-soft: rgba(59,130,246,0.1);
    --color-success: #22C55E;
    --color-success-soft: rgba(34,197,94,0.1);
    --color-error: #EF4444;
    --color-error-soft: rgba(239,68,68,0.1);
    --color-warning: #F59E0B;
    --color-warning-soft: rgba(245,158,11,0.1);
    --color-overlay: rgba(0,0,0,0.4);
    --font-body: 'Inter', -apple-system, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    --text-xs: 0.75rem; --text-sm: 0.8125rem; --text-base: 0.875rem;
    --text-lg: 1rem; --text-xl: 1.125rem; --text-2xl: 1.375rem; --text-3xl: 1.75rem;
    --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
    --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
    --space-12: 3rem; --space-16: 4rem;
    --radius-sm: 6px; --radius-md: 8px; --radius-lg: 12px; --radius-xl: 16px; --radius-full: 9999px;
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.08);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.12);
    --sidebar-width: 260px;
    --topbar-height: 60px;
    --ease-out: cubic-bezier(0.16,1,0.3,1);
    --duration-fast: 150ms;
    --duration-base: 250ms;
}
[data-theme="dark"] {
    --color-bg: #111111; --color-bg-alt: #1A1A1A;
    --color-surface: #1E1E1E; --color-surface-hover: #252525;
    --color-border: rgba(255,255,255,0.06); --color-border-strong: rgba(255,255,255,0.12);
    --color-text: #F0EDE8; --color-text-secondary: #A0A0A0; --color-text-tertiary: #666;
    --color-accent: #F0EDE8; --color-accent-soft: #2A2826;
    --color-overlay: rgba(0,0,0,0.6);
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{-webkit-font-smoothing:antialiased}
body{font-family:var(--font-body);font-size:var(--text-base);line-height:1.5;color:var(--color-text);background:var(--color-bg);transition:background var(--duration-base),color var(--duration-base)}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
button{border:none;background:none;cursor:pointer;font-family:inherit;color:inherit}
input,select,textarea{font-family:inherit;font-size:inherit}
::selection{background:var(--color-accent-warm);color:#fff}

/* ============ LOGIN ============ */
.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-bg);padding:var(--space-6)}
.login-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--space-10);max-width:400px;width:100%;box-shadow:var(--shadow-lg);text-align:center}
.login-logo{font-family:var(--font-display);font-size:var(--text-3xl);font-weight:600;color:var(--color-accent-warm);margin-bottom:var(--space-4)}
.login-title{font-size:var(--text-2xl);font-weight:600;margin-bottom:var(--space-2)}
.login-subtitle{font-size:var(--text-sm);color:var(--color-text-secondary);margin-bottom:var(--space-8)}
.login-form{text-align:left}
.login-error{background:var(--color-error-soft);color:var(--color-error);font-size:var(--text-sm);padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);margin-bottom:var(--space-4)}
.login-hint{font-size:var(--text-xs);color:var(--color-text-tertiary);margin-top:var(--space-6)}
.login-hint strong{color:var(--color-text-secondary)}

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

/* ============ SIDEBAR ============ */
.sidebar{width:var(--sidebar-width);background:var(--color-surface);border-right:1px solid var(--color-border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:50;transition:transform var(--duration-base) var(--ease-out)}
.sidebar-header{padding:var(--space-6);display:flex;align-items:center;gap:var(--space-3);border-bottom:1px solid var(--color-border)}
.sidebar-logo{font-family:var(--font-display);font-size:var(--text-2xl);font-weight:600;color:var(--color-accent-warm)}
.sidebar-badge{font-size:var(--text-xs);font-weight:600;letter-spacing:0.06em;text-transform:uppercase;background:var(--color-accent-warm-soft);color:var(--color-accent-warm);padding:2px 8px;border-radius:var(--radius-full)}
.sidebar-nav{flex:1;padding:var(--space-4) var(--space-3);overflow-y:auto;display:flex;flex-direction:column;gap:2px}
.sidebar-link{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);font-size:var(--text-sm);font-weight:500;color:var(--color-text-secondary);border-radius:var(--radius-md);transition:all var(--duration-fast)}
.sidebar-link:hover{background:var(--color-bg-alt);color:var(--color-text)}
.sidebar-link.active{background:var(--color-accent-warm-soft);color:var(--color-accent-warm)}
.sidebar-divider{height:1px;background:var(--color-border);margin:var(--space-3) var(--space-4)}
.sidebar-footer{padding:var(--space-4) var(--space-3);border-top:1px solid var(--color-border)}

/* ============ MAIN ============ */
.admin-main{flex:1;margin-left:var(--sidebar-width);display:flex;flex-direction:column;min-height:100vh}
.topbar{height:var(--topbar-height);background:var(--color-surface);border-bottom:1px solid var(--color-border);display:flex;align-items:center;padding:0 var(--space-6);gap:var(--space-4);position:sticky;top:0;z-index:40}
.topbar-menu{display:none;width:36px;height:36px;align-items:center;justify-content:center;border-radius:var(--radius-md);color:var(--color-text-secondary)}
.topbar-menu:hover{background:var(--color-bg-alt)}
.topbar-search{flex:1;max-width:400px;display:flex;align-items:center;gap:var(--space-2);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-full);padding:var(--space-2) var(--space-4);color:var(--color-text-tertiary);transition:border var(--duration-fast)}
.topbar-search:focus-within{border-color:var(--color-accent-warm)}
.topbar-search-input{border:none;outline:none;background:transparent;flex:1;font-size:var(--text-sm);color:var(--color-text)}
.topbar-search-input::placeholder{color:var(--color-text-tertiary)}
.topbar-actions{display:flex;align-items:center;gap:var(--space-2);margin-left:auto}
.topbar-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-md);color:var(--color-text-secondary);transition:all var(--duration-fast)}
.topbar-btn:hover{background:var(--color-bg-alt);color:var(--color-text)}
.topbar-btn .sun-icon{display:block}.topbar-btn .moon-icon{display:none}
[data-theme="dark"] .topbar-btn .sun-icon{display:none}[data-theme="dark"] .topbar-btn .moon-icon{display:block}
.topbar-avatar{width:32px;height:32px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--color-accent-warm),#A08060);color:#fff;display:flex;align-items:center;justify-content:center;font-size:var(--text-sm);font-weight:600}

/* ============ CONTENT ============ */
.admin-content{flex:1;padding:var(--space-8);max-width:1200px;width:100%}

/* Page header */
.page-header{margin-bottom:var(--space-8)}
.page-title{font-size:var(--text-2xl);font-weight:600;margin-bottom:var(--space-1)}
.page-desc{font-size:var(--text-sm);color:var(--color-text-secondary)}
.page-header-row{display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);flex-wrap:wrap}

/* ============ STAT CARDS ============ */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--space-4);margin-bottom:var(--space-8)}
.stat-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-6);display:flex;align-items:flex-start;gap:var(--space-4);transition:all var(--duration-fast)}
.stat-card:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.stat-icon{width:44px;height:44px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.stat-icon.blue{background:var(--color-primary-soft);color:var(--color-primary)}
.stat-icon.green{background:var(--color-success-soft);color:var(--color-success)}
.stat-icon.orange{background:var(--color-warning-soft);color:var(--color-warning)}
.stat-icon.red{background:var(--color-error-soft);color:var(--color-error)}
.stat-icon.warm{background:var(--color-accent-warm-soft);color:var(--color-accent-warm)}
.stat-info{flex:1}
.stat-label{font-size:var(--text-xs);font-weight:500;color:var(--color-text-tertiary);text-transform:uppercase;letter-spacing:0.04em;margin-bottom:var(--space-1)}
.stat-value{font-size:var(--text-2xl);font-weight:700;line-height:1.2}
.stat-change{font-size:var(--text-xs);color:var(--color-success);margin-top:var(--space-1)}

/* ============ BUTTONS ============ */
.btn{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-5);font-size:var(--text-sm);font-weight:500;border-radius:var(--radius-md);transition:all var(--duration-fast);white-space:nowrap;cursor:pointer}
.btn-primary{background:var(--color-accent);color:var(--color-bg)}
.btn-primary:hover{opacity:0.9}
.btn-ghost{color:var(--color-text-secondary);border:1px solid var(--color-border-strong)}
.btn-ghost:hover{background:var(--color-surface-hover);color:var(--color-text)}
.btn-danger{background:var(--color-error);color:#fff}
.btn-danger:hover{opacity:0.9}
.btn-sm{padding:var(--space-1) var(--space-3);font-size:var(--text-xs)}
.btn-block{width:100%;justify-content:center;padding:var(--space-3)}
.btn-icon-only{width:32px;height:32px;padding:0;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-md);color:var(--color-text-secondary);transition:all var(--duration-fast)}
.btn-icon-only:hover{background:var(--color-bg-alt);color:var(--color-text)}

/* ============ TABLE ============ */
.data-table{width:100%;border-collapse:collapse;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden}
.data-table thead{background:var(--color-bg-alt)}
.data-table th{font-size:var(--text-xs);font-weight:600;text-transform:uppercase;letter-spacing:0.04em;color:var(--color-text-secondary);padding:var(--space-3) var(--space-4);text-align:left;border-bottom:1px solid var(--color-border)}
.data-table td{padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--color-border);font-size:var(--text-sm);vertical-align:middle}
.data-table tr:last-child td{border-bottom:none}
.data-table tr:hover td{background:var(--color-surface-hover)}
.data-table .thumb{width:48px;height:36px;border-radius:var(--radius-sm);object-fit:cover;background:var(--color-bg-alt)}
.data-table .actions{display:flex;gap:var(--space-1)}
.table-wrap{overflow-x:auto;border-radius:var(--radius-lg)}

/* Badge */
.badge{display:inline-block;font-size:var(--text-xs);font-weight:600;padding:2px 8px;border-radius:var(--radius-full);letter-spacing:0.02em}
.badge-green{background:var(--color-success-soft);color:var(--color-success)}
.badge-yellow{background:var(--color-warning-soft);color:var(--color-warning)}
.badge-red{background:var(--color-error-soft);color:var(--color-error)}
.badge-blue{background:var(--color-primary-soft);color:var(--color-primary)}
.badge-warm{background:var(--color-accent-warm-soft);color:var(--color-accent-warm)}

/* ============ FORMS ============ */
.form-group{margin-bottom:var(--space-5)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-4)}
.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:var(--space-4)}
.form-label{display:block;font-size:var(--text-xs);font-weight:600;letter-spacing:0.04em;text-transform:uppercase;color:var(--color-text-secondary);margin-bottom:var(--space-2)}
.form-input,.form-select,.form-textarea{width:100%;padding:var(--space-3) var(--space-4);background:var(--color-bg);border:1px solid var(--color-border-strong);border-radius:var(--radius-md);font-size:var(--text-sm);color:var(--color-text);transition:all var(--duration-fast);outline:none}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--color-accent-warm);box-shadow:0 0 0 3px var(--color-accent-warm-soft)}
.form-input::placeholder,.form-textarea::placeholder{color:var(--color-text-tertiary)}
.form-textarea{resize:vertical;min-height:100px}
.form-check{display:flex;align-items:center;gap:var(--space-2);font-size:var(--text-sm);cursor:pointer}
.form-check input{accent-color:var(--color-accent-warm);width:16px;height:16px}
.form-actions{display:flex;justify-content:flex-end;gap:var(--space-3);padding-top:var(--space-5);border-top:1px solid var(--color-border);margin-top:var(--space-6)}
.form-section{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-6);margin-bottom:var(--space-6)}
.form-section-title{font-size:var(--text-lg);font-weight:600;margin-bottom:var(--space-5);padding-bottom:var(--space-3);border-bottom:1px solid var(--color-border)}

/* ============ CARD (generic) ============ */
.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--duration-fast)}
.card:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-sm)}
.card-body{padding:var(--space-5)}

/* ============ RECENT LIST ============ */
.recent-list{display:flex;flex-direction:column;gap:var(--space-2)}
.recent-item{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);transition:background var(--duration-fast)}
.recent-item:hover{background:var(--color-bg-alt)}
.recent-icon{width:36px;height:36px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:var(--text-lg);flex-shrink:0}
.recent-info{flex:1;min-width:0}
.recent-title{font-size:var(--text-sm);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.recent-meta{font-size:var(--text-xs);color:var(--color-text-tertiary)}

/* ============ MEDIA GRID ============ */
.media-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:var(--space-4)}
.media-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--duration-fast);position:relative}
.media-card:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-sm)}
.media-card img{width:100%;height:120px;object-fit:cover}
.media-card-body{padding:var(--space-3)}
.media-card-title{font-size:var(--text-xs);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.media-card-actions{position:absolute;top:var(--space-2);right:var(--space-2);display:flex;gap:var(--space-1);opacity:0;transition:opacity var(--duration-fast)}
.media-card:hover .media-card-actions{opacity:1}
.media-card-actions .btn-icon-only{width:28px;height:28px;background:rgba(0,0,0,0.5);color:#fff;border-radius:var(--radius-sm)}
.media-card-actions .btn-icon-only:hover{background:rgba(0,0,0,0.7)}

/* ============ TOGGLE SWITCH ============ */
.toggle{position:relative;width:42px;height:24px;flex-shrink:0}
.toggle input{opacity:0;width:0;height:0}
.toggle-slider{position:absolute;inset:0;background:var(--color-border-strong);border-radius:var(--radius-full);cursor:pointer;transition:var(--duration-fast)}
.toggle-slider::before{content:'';position:absolute;width:18px;height:18px;left:3px;bottom:3px;background:#fff;border-radius:50%;transition:var(--duration-fast)}
.toggle input:checked+.toggle-slider{background:var(--color-accent-warm)}
.toggle input:checked+.toggle-slider::before{transform:translateX(18px)}

/* ============ CONFIRM DIALOG ============ */
.confirm-overlay{position:fixed;inset:0;z-index:500;background:var(--color-overlay);display:flex;align-items:center;justify-content:center;padding:var(--space-6)}
.confirm-box{background:var(--color-surface);border-radius:var(--radius-xl);padding:var(--space-8);max-width:400px;width:100%;box-shadow:var(--shadow-xl);text-align:center}
.confirm-title{font-size:var(--text-xl);font-weight:600;margin-bottom:var(--space-2)}
.confirm-text{font-size:var(--text-sm);color:var(--color-text-secondary);margin-bottom:var(--space-6)}
.confirm-actions{display:flex;justify-content:center;gap:var(--space-3)}

/* ============ TOAST ============ */
.toast-container{position:fixed;bottom:var(--space-8);right:var(--space-8);z-index:600;display:flex;flex-direction:column;gap:var(--space-3)}
.toast{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-4) var(--space-6);box-shadow:var(--shadow-lg);font-size:var(--text-sm);min-width:280px;animation:toastIn var(--duration-base) var(--ease-out)}
.toast-success{border-left:3px solid var(--color-success)}
.toast-error{border-left:3px solid var(--color-error)}
.toast-info{border-left:3px solid var(--color-primary)}
.toast-out{animation:toastOut var(--duration-base) forwards}
@keyframes toastIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}
@keyframes toastOut{from{opacity:1;transform:translateX(0)}to{opacity:0;transform:translateX(20px)}}

/* ============ EMPTY STATE ============ */
.empty-state{text-align:center;padding:var(--space-16) var(--space-8)}
.empty-state-icon{font-size:3rem;margin-bottom:var(--space-4);opacity:0.4}
.empty-state-title{font-size:var(--text-lg);font-weight:600;margin-bottom:var(--space-2);color:var(--color-text-secondary)}
.empty-state-text{font-size:var(--text-sm);color:var(--color-text-tertiary)}

/* ============ UPLOAD AREA ============ */
.upload-area{border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden;background:var(--color-bg)}
.upload-dropzone{padding:var(--space-10) var(--space-6);text-align:center;cursor:pointer;transition:all var(--duration-fast);border:2px dashed transparent}
.upload-dropzone:hover{border-color:var(--color-accent-warm);background:var(--color-accent-warm-soft)}
.upload-dropzone.drag-over{border-color:var(--color-accent-warm);background:var(--color-accent-warm-soft);transform:scale(1.01)}
.upload-dropzone.hidden{display:none}
.upload-icon{color:var(--color-text-tertiary);margin-bottom:var(--space-3);display:flex;justify-content:center}
.upload-text{font-size:var(--text-sm);color:var(--color-text-secondary);margin-bottom:var(--space-2)}
.upload-browse{color:var(--color-accent-warm);font-weight:600;cursor:pointer;text-decoration:underline}
.upload-browse:hover{color:var(--color-text)}
.upload-hint{font-size:var(--text-xs);color:var(--color-text-tertiary)}
.upload-file-input{display:none}
.upload-preview{position:relative;display:none}
.upload-preview.has-image{display:block}
.upload-preview img{width:100%;max-height:240px;object-fit:cover;display:block}
.upload-remove{position:absolute;top:var(--space-2);right:var(--space-2);width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.6);color:#fff;border:none;border-radius:var(--radius-full);font-size:var(--text-lg);cursor:pointer;transition:all var(--duration-fast);line-height:1}
.upload-remove:hover{background:var(--color-error)}
.upload-progress{padding:var(--space-6);text-align:center}
.upload-progress.hidden{display:none}
.upload-progress-bar{width:100%;height:4px;background:var(--color-border);border-radius:var(--radius-full);overflow:hidden;margin-bottom:var(--space-3)}
.upload-progress-fill{height:100%;background:var(--color-accent-warm);border-radius:var(--radius-full);transition:width 0.3s ease}
.upload-progress-text{font-size:var(--text-xs);color:var(--color-text-tertiary)}
.upload-url-toggle{margin-top:var(--space-2)}
.upload-url-input{display:flex;gap:var(--space-2);margin-top:var(--space-2);align-items:center}
.upload-url-input.hidden{display:none}
.upload-url-input .form-input{flex:1}

/* Scrollbar */
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--color-border-strong);border-radius:3px}

/* ============ RESPONSIVE ============ */
@media(max-width:768px){
    .sidebar{transform:translateX(-100%)}
    .sidebar.open{transform:translateX(0)}
    .admin-main{margin-left:0}
    .topbar-menu{display:flex}
    .admin-content{padding:var(--space-4)}
    .stats-grid{grid-template-columns:1fr 1fr}
    .form-row,.form-row-3{grid-template-columns:1fr}
    .page-header-row{flex-direction:column;align-items:flex-start}
}
@media(max-width:480px){
    .stats-grid{grid-template-columns:1fr}
}