/* HumanFree Admin — Modern Dashboard (Dark Theme) */

:root {
    --bg: #121210;
    --bg-card: #1a1a17;
    --bg-surface: #22221e;
    --bg-hover: #2a2a25;
    --border: #2e2e28;
    --border-light: #3a3a33;
    --text: #e8e8e2;
    --text-secondary: #908e85;
    --text-tertiary: #5c5a52;
    --accent: #8fa87e;
    --accent-hover: #a3bc90;
    --terracotta: #c67b5c;
    --terracotta-hover: #d4907a;
    --danger: #e05252;
    --danger-hover: #e87070;
    --warning: #d4a24e;
    --success: #6aab6a;
    --success-hover: #7fbf7f;
    --radius: 10px;
    --radius-sm: 6px;
    --sidebar-w: 220px;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-serif: 'Lora', Georgia, 'Times New Roman', serif;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --duration: 0.2s;
    --focus-ring: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
    --text-on-accent: #1a1a17;
    --text-on-fill: #fff;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.6; min-height: 100vh; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

/* Utility */
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* Login */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 48px 40px; width: 380px; text-align: center; box-shadow: 0 8px 32px rgba(0,0,0,.3); }
.login-logo { font-size: 48px; margin-bottom: 12px; }
.login-card h1 { font-family: var(--font-serif); font-size: 26px; font-weight: 600; margin-bottom: 4px; letter-spacing: -0.01em; }
.login-subtitle { color: var(--text-secondary); font-size: 14px; margin-bottom: 32px; }
.error-text { color: var(--danger); font-size: 13px; margin-top: 12px; }

/* Form */
.form-group { margin-bottom: 16px; }
.form-float { position: relative; }
.form-float label { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); font-size: 14px; color: var(--text-tertiary); pointer-events: none; transition: all var(--duration) var(--ease-out); }
.form-float input:focus + label,
.form-float input:not(:placeholder-shown) + label { top: 6px; transform: translateY(0); font-size: 11px; color: var(--accent); }
.form-float input { padding: 18px 14px 6px; }
input[type="text"], input[type="password"], .search-input, .select-input {
    width: 100%; padding: 10px 14px; background: var(--bg-surface); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text); font-size: 14px; outline: none; transition: border-color var(--duration) var(--ease-out), box-shadow var(--duration) var(--ease-out);
}
input:focus-visible, .search-input:focus-visible, .select-input:focus-visible { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(143,168,126,.15); }
input:focus, .search-input:focus, .select-input:focus { border-color: var(--accent); }
.select-input { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23888'%3E%3Cpath d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 32px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 16px; border: none; border-radius: var(--radius-sm); font-size: 13px; font-weight: 500; cursor: pointer; transition: all var(--duration) var(--ease-out); outline: none; }
.btn:focus-visible { box-shadow: var(--focus-ring); }
.btn-primary { background: var(--accent); color: var(--text-on-accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { background: var(--danger); color: var(--text-on-fill); }
.btn-danger:hover { background: var(--danger-hover); }
.btn-success { background: var(--success); color: var(--text-on-fill); }
.btn-success:hover { background: var(--success-hover); }
.btn-ghost { background: transparent; color: var(--text-secondary); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--border-light); background: var(--bg-hover); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-block { width: 100%; padding: 12px; font-size: 15px; }
.btn:disabled { opacity: .4; cursor: not-allowed; pointer-events: none; }

/* Layout */
#app { display: flex; min-height: 100vh; }
.sidebar { width: var(--sidebar-w); background: var(--bg-card); border-right: 1px solid var(--border); display: flex; flex-direction: column; position: fixed; top: 0; left: 0; bottom: 0; z-index: 10; }
.sidebar-header { padding: 24px 20px 20px; display: flex; align-items: center; gap: 10px; }
.logo { font-size: 24px; }
.logo-text { font-family: var(--font-serif); font-size: 17px; font-weight: 600; letter-spacing: -0.01em; }
.nav-list { list-style: none; flex: 1; padding: 0 8px; }
.nav-item { padding: 10px 14px; border-radius: var(--radius-sm); cursor: pointer; font-size: 14px; color: var(--text-secondary); display: flex; align-items: center; gap: 10px; margin-bottom: 2px; transition: all var(--duration) var(--ease-out); outline: none; }
.nav-item:hover { color: var(--text); background: var(--bg-hover); }
.nav-item:focus-visible { box-shadow: var(--focus-ring); }
.nav-item.active { color: var(--text); background: var(--bg-surface); }
.nav-icon { font-size: 16px; width: 20px; text-align: center; }
.sidebar-footer { padding: 16px 20px; border-top: 1px solid var(--border); }

.main-content { margin-left: var(--sidebar-w); flex: 1; padding: 32px; min-height: 100vh; }
.page { animation: page-in 0.3s var(--ease-out); }
.page-title { font-family: var(--font-serif); font-size: 22px; font-weight: 600; margin-bottom: 24px; letter-spacing: -0.01em; }
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.page-header .page-title { margin-bottom: 0; }
.page-actions { display: flex; gap: 12px; align-items: center; }
.page-actions .search-input { width: 240px; }

/* Stats Grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; transition: border-color var(--duration) var(--ease-out), box-shadow var(--duration) var(--ease-out); }
.stat-card:hover { border-color: var(--border-light); box-shadow: 0 2px 12px rgba(0,0,0,.15); }
.stat-label { font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; }
.stat-value { font-size: 28px; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-value.accent { color: var(--accent); }
.stat-value.warning { color: var(--warning); }
.stat-value.danger { color: var(--danger); }

/* Table */
.table-wrap { overflow-x: auto; position: relative; }
.table-wrap::after { content: ''; position: absolute; top: 0; right: 0; bottom: 0; width: 24px; background: linear-gradient(to right, transparent, var(--bg)); pointer-events: none; opacity: 0; transition: opacity var(--duration) var(--ease-out); }
.table-wrap.is-scrollable::after { opacity: 1; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th { text-align: left; padding: 12px 16px; color: var(--text-secondary); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; border-bottom: 1px solid var(--border); }
.data-table td { padding: 12px 16px; border-bottom: 1px solid var(--border); vertical-align: middle; transition: background var(--duration) var(--ease-out); }
.data-table tr:hover td { background: var(--bg-hover); }
.data-table .thumb { width: 48px; height: 48px; border-radius: var(--radius-sm); object-fit: cover; background: var(--bg-surface); }
.data-table .actions { display: flex; gap: 8px; }

/* Card Grid (审核) */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.audit-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: border-color var(--duration) var(--ease-out), box-shadow var(--duration) var(--ease-out); }
.audit-card:hover { border-color: var(--border-light); box-shadow: 0 4px 16px rgba(0,0,0,.15); }
.audit-card-img { width: 100%; aspect-ratio: 4/3; object-fit: cover; background: var(--bg-surface); display: block; }
.audit-card-body { padding: 14px 16px; }
.audit-card-title { font-size: 14px; font-weight: 500; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.audit-card-meta { font-size: 12px; color: var(--text-secondary); margin-bottom: 12px; line-height: 1.5; }
.audit-card-actions { display: flex; gap: 8px; }

/* Pagination */
.pagination { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 24px; padding: 16px 0; }
.pagination button { padding: 6px 14px; }
.pagination .page-info { font-size: 13px; color: var(--text-secondary); }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.6); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; z-index: 100; opacity: 0; transition: opacity 0.25s var(--ease-out); pointer-events: none; }
.modal-overlay.is-visible { opacity: 1; pointer-events: auto; }
.modal { background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; width: 440px; max-width: 90vw; max-height: 80vh; overflow-y: auto; transform: translateY(12px) scale(0.97); transition: transform 0.25s var(--ease-out); }
.modal-overlay.is-visible .modal { transform: translateY(0) scale(1); }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px 0; }
.modal-header h3 { font-family: var(--font-serif); font-size: 17px; font-weight: 600; }
.modal-close { background: none; border: none; color: var(--text-tertiary); font-size: 22px; cursor: pointer; padding: 4px 8px; line-height: 1; border-radius: var(--radius-sm); transition: color var(--duration) var(--ease-out), background var(--duration) var(--ease-out); outline: none; }
.modal-close:hover { color: var(--text); background: var(--bg-hover); }
.modal-close:focus-visible { box-shadow: var(--focus-ring); }
.modal-body { padding: 16px 24px; }
.modal-body .form-group { margin-bottom: 14px; }
.modal-body label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.modal-body textarea { width: 100%; padding: 10px 14px; background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); font-size: 14px; font-family: var(--font); resize: vertical; min-height: 80px; outline: none; transition: border-color var(--duration) var(--ease-out), box-shadow var(--duration) var(--ease-out); }
.modal-body textarea:focus { border-color: var(--accent); }
.modal-body textarea:focus-visible { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(143,168,126,.15); }
.modal-footer { padding: 0 24px 20px; display: flex; gap: 8px; justify-content: flex-end; }

/* Toast */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 200; display: flex; flex-direction: column; gap: 8px; }
.toast { padding: 12px 20px; border-radius: var(--radius-sm); font-size: 14px; animation: toast-in .3s var(--ease-out); min-width: 200px; transition: opacity 0.25s var(--ease-out), transform 0.25s var(--ease-out); display: flex; align-items: center; justify-content: space-between; }
.toast.is-leaving { opacity: 0; transform: translateY(-8px); }
.toast.success { background: var(--success); color: var(--text-on-fill); }
.toast.error { background: var(--danger); color: var(--text-on-fill); }
.toast.info { background: var(--bg-surface); color: var(--text); border: 1px solid var(--border); }
.toast-close { background: none; border: none; color: inherit; font-size: 18px; cursor: pointer; padding: 0 0 0 12px; line-height: 1; opacity: .7; transition: opacity var(--duration) var(--ease-out); }
.toast-close:hover { opacity: 1; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }

/* Badge */
.badge { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 11px; font-weight: 500; }
.badge-pending { background: rgba(212,162,78,.12); color: var(--warning); }
.badge-approved { background: rgba(106,171,106,.12); color: var(--success); }
.badge-rejected { background: rgba(224,82,82,.12); color: var(--danger); }

/* Empty State */
.empty-state { text-align: center; padding: 48px 24px; color: var(--text-secondary); }
.empty-state-full { grid-column: 1 / -1; }
.empty-state-icon { font-size: 36px; margin-bottom: 12px; opacity: 0.5; }
.empty-state-text { font-size: 14px; }

/* Utility colors */
.text-danger { color: var(--danger); }

/* Broken image fallback */
img.audit-card-img { color: transparent; }
img.thumb { color: transparent; }

/* Page fade-in */
@keyframes page-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

/* Responsive — Tablet */
@media (max-width: 1024px) {
    .main-content { padding: 24px; }
    .stats-grid { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
    .card-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
    .page-header { flex-wrap: wrap; gap: 12px; }
    .page-actions .search-input { width: 200px; }
}

/* Responsive — Mobile */
@media (max-width: 768px) {
    .sidebar { width: 60px; }
    .logo-text, .nav-item span:not(.nav-icon) { display: none; }
    .nav-item { justify-content: center; padding: 12px; min-height: 44px; }
    .sidebar-footer { text-align: center; padding: 12px 8px; }
    #logout-btn { padding: 8px; font-size: 0; min-width: 44px; min-height: 44px; }
    #logout-btn::before { content: '↩'; font-size: 16px; }
    .main-content { margin-left: 60px; padding: 16px; }
    .card-grid { grid-template-columns: 1fr; }
    .page-header { flex-direction: column; align-items: stretch; }
    .page-actions { width: 100%; }
    .page-actions .search-input { width: 100%; }
    .btn-sm { min-height: 44px; min-width: 44px; padding: 8px 14px; }
    .data-table .actions { gap: 4px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .stat-card { padding: 14px; }
    .stat-value { font-size: 22px; }
    .pagination button { min-height: 44px; min-width: 44px; }
}

/* Large screens — constrain content width */
@media (min-width: 1440px) {
    .main-content { max-width: 1280px; }
}