/* ==============================================================
   Geo Engine Pro — Admin Dashboard
   Dark theme · Responsive · Professional
   ============================================================== */

/* --- CSS Variables (color tokens) --- */
:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-card: #1c2333;
    --bg-hover: #242d3d;
    --bg-input: #0d1117;
    --border-color: #30363d;
    --border-focus: #58a6ff;

    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --text-link: #58a6ff;

    --accent: #2ea043;
    --accent-hover: #3fb950;
    --danger: #da3633;
    --danger-hover: #f85149;
    --warning: #d29922;
    --warning-hover: #e3b341;
    --info: #1f6feb;
    --info-hover: #58a6ff;

    --sidebar-width: 260px;
    --header-height: 60px;
    --radius: 8px;
    --radius-sm: 4px;
    --shadow: 0 2px 12px rgba(0,0,0,.3);
}

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

html {
    font-size: 15px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
                 Ubuntu, Cantarell, 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
                 sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--text-link); text-decoration: none; }
a:hover { text-decoration: underline; }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ---- Login Page ---- */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: radial-gradient(ellipse at center, var(--bg-secondary) 0%, var(--bg-primary) 70%);
    padding: 20px;
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 48px 40px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow);
}

.login-card .logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-card .logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), var(--info));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-card .logo p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 4px;
}

.login-card .flash-error {
    background: rgba(218,54,51,.15);
    border: 1px solid var(--danger);
    color: var(--danger-hover);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    transition: border .2s, box-shadow .2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(88,166,255,.15);
}

.form-group textarea { resize: vertical; min-height: 80px; }
.form-group select { cursor: pointer; }
.form-group select option { background: var(--bg-card); }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-hover);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .2s;
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover { background: var(--bg-card); text-decoration: none; }

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }

.btn-danger {
    background: var(--danger);
    border-color: var(--danger);
    color: #fff;
}
.btn-danger:hover { background: var(--danger-hover); }

.btn-warning {
    background: var(--warning);
    border-color: var(--warning);
    color: #000;
}
.btn-warning:hover { background: var(--warning-hover); }

.btn-info {
    background: var(--info);
    border-color: var(--info);
    color: #fff;
}
.btn-info:hover { background: var(--info-hover); }

.btn-sm { padding: 5px 12px; font-size: 0.8rem; }

.btn-block { width: 100%; justify-content: center; }

.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---- Layout: Sidebar + Main ---- */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform .3s;
}

.sidebar-brand {
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-brand h2 {
    font-size: 1.2rem;
    font-weight: 700;
}

.sidebar-brand .brand-accent {
    color: var(--accent);
}

.sidebar-brand small {
    display: block;
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: 2px;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: all .15s;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    text-decoration: none;
}

.nav-item.active {
    background: rgba(46,160,67,.1);
    color: var(--accent);
    border-left-color: var(--accent);
    font-weight: 600;
}

.nav-item .nav-icon {
    font-size: 1.2rem;
    width: 22px;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border-color);
}

.sidebar-footer .nav-item {
    padding: 8px 0;
    border-left: none;
}

/* Main content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 24px 32px 40px;
    min-height: 100vh;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 12px;
}

.page-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
}

.page-header .subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 2px;
}

/* ---- Cards ---- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.card-body { }
.card-body p { color: var(--text-secondary); font-size: 0.9rem; }

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    transition: border-color .2s;
}

.stat-card:hover { border-color: var(--text-muted); }

.stat-card .stat-label {
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 6px;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-card .stat-detail {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.stat-card.accent .stat-value { color: var(--accent); }
.stat-card.info .stat-value { color: var(--info); }
.stat-card.warning .stat-value { color: var(--warning); }
.stat-card.danger .stat-value { color: var(--danger); }

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

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

table thead th {
    text-align: left;
    padding: 10px 12px;
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 600;
    white-space: nowrap;
}

table tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

table tbody tr:hover { background: var(--bg-hover); }

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-active {
    background: rgba(46,160,67,.15);
    color: var(--accent);
    border: 1px solid rgba(46,160,67,.3);
}

.badge-revoked {
    background: rgba(218,54,51,.15);
    color: var(--danger-hover);
    border: 1px solid rgba(218,54,51,.3);
}

.badge-warning {
    background: rgba(210,153,34,.15);
    color: var(--warning-hover);
    border: 1px solid rgba(210,153,34,.3);
}

/* ---- Prompt Editor ---- */
.prompt-editor {
    min-height: 300px;
    font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.9rem;
    line-height: 1.7;
    tab-size: 2;
}

.prompt-meta {
    display: flex;
    gap: 24px;
    margin-bottom: 12px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.version-history {
    max-height: 300px;
    overflow-y: auto;
}

.version-item {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.version-item:hover { background: var(--bg-hover); }

.version-item .ver-num {
    font-weight: 600;
    color: var(--info);
}

.version-item .ver-date {
    color: var(--text-muted);
    font-size: 0.78rem;
}

.version-item .ver-note {
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ---- Search / Filter bars ---- */
.search-bar {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.search-bar input,
.search-bar select {
    padding: 8px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
}

.search-bar input:focus,
.search-bar select:focus {
    border-color: var(--border-focus);
}

.search-bar input { flex: 1; min-width: 200px; }

/* ---- Modal ---- */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,.6);
    z-index: 200;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

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

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    width: 100%;
    max-width: 520px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 8px 32px rgba(0,0,0,.5);
    animation: modalIn .2s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: translateY(-20px) scale(.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 { font-size: 1.05rem; }

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 4px;
    line-height: 1;
}
.modal-close:hover { color: var(--text-primary); }

.modal-body { padding: 20px 24px; }
.modal-footer {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    padding: 12px 24px 20px;
}

/* ---- Flash messages (dashboard pages) ---- */
.flash-message {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 300;
    background: var(--bg-card);
    border: 1px solid var(--accent);
    color: var(--text-primary);
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    font-size: 0.9rem;
    animation: slideIn .3s ease;
    max-width: 400px;
}

.flash-message.error { border-color: var(--danger); }

@keyframes slideIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ---- Empty state ---- */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
}

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: 12px;
    opacity: .5;
}

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

/* ---- Loading spinner ---- */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin .6s linear infinite;
}

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

/* ---- Two-column layout ---- */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 900px) {
    .two-col { grid-template-columns: 1fr; }
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
        padding: 16px;
    }
    .page-header h1 { font-size: 1.3rem; }
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    .login-card { padding: 32px 24px; }

    .mobile-menu-btn {
        display: flex !important;
    }
}

@media (min-width: 769px) {
    .mobile-menu-btn { display: none !important; }
}

.mobile-menu-btn {
    display: none;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 8px 12px;
    cursor: pointer;
    font-size: 1.2rem;
}

/* ---- Utilities ---- */
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-accent { color: var(--accent); }
.text-danger { color: var(--danger-hover); }
.text-warning { color: var(--warning-hover); }
.text-info { color: var(--info-hover); }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 16px; }
.ml-2 { margin-left: 8px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 16px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.truncate {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.code-block {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.8rem;
    overflow-x: auto;
}

/* Toast notification (JS-driven) */
.toast {
    visibility: hidden;
    min-width: 250px;
    background: var(--bg-card);
    border: 1px solid var(--accent);
    color: var(--text-primary);
    text-align: center;
    border-radius: var(--radius-sm);
    padding: 12px 20px;
    position: fixed;
    z-index: 300;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 4px 16px rgba(0,0,0,.4);
    font-size: 0.9rem;
}

.toast.show {
    visibility: visible;
    animation: fadeInUp .4s, fadeOutUp .4s 2.6s;
}

.toast.error { border-color: var(--danger); }
.toast.warning { border-color: var(--warning); }

@keyframes fadeInUp {
    from { opacity: 0; transform: translateX(-50%) translateY(20px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}
@keyframes fadeOutUp {
    from { opacity: 1; transform: translateX(-50%) translateY(0); }
    to { opacity: 0; transform: translateX(-50%) translateY(-20px); }
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    justify-content: center;
}

.pagination .page-btn {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.85rem;
}

.pagination .page-btn:hover { background: var(--bg-hover); }
.pagination .page-btn.active { background: var(--accent); border-color: var(--accent); }
.pagination .page-info {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Action buttons group */
.actions-group {
    display: flex;
    gap: 4px;
    flex-wrap: nowrap;
}