/* ============================================================
   SteuersoftAI ML-Ops Admin Dashboard
   Dark Theme — Sidebar Layout — Chart.js Ready
   ============================================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg: #0a0f1a;
    --bg-sidebar: #0d1321;
    --bg-card: #111827;
    --bg-card-hover: #1a2332;
    --bg-input: #1a2332;
    --bg-hover: rgba(59,130,246,.08);
    --text: #f1f5f9;
    --text-2: #94a3b8;
    --text-3: #64748b;
    --primary: #3b82f6;
    --primary-h: #2563eb;
    --primary-bg: rgba(59,130,246,.12);
    --danger: #ef4444;
    --danger-bg: rgba(239,68,68,.1);
    --success: #10b981;
    --success-bg: rgba(16,185,129,.1);
    --warn: #f59e0b;
    --warn-bg: rgba(245,158,11,.1);
    --info: #06b6d4;
    --info-bg: rgba(6,182,212,.1);
    --purple: #8b5cf6;
    --purple-bg: rgba(139,92,246,.1);
    --amber: #f59e0b;
    --border: #1e293b;
    --border-light: #293548;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --shadow: 0 1px 3px rgba(0,0,0,.3), 0 1px 2px rgba(0,0,0,.2);
    --shadow-lg: 0 4px 20px rgba(0,0,0,.4);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --sidebar-w: 240px;
    --topbar-h: 56px;
    --transition: .2s cubic-bezier(.4,0,.2,1);
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

body {
    font-family: var(--font);
    font-size: 14px;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
    overflow: hidden;
}

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

/* ============================================================
   Login
   ============================================================ */
.login-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}
.login-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    width: 400px;
    max-width: 90vw;
    box-shadow: var(--shadow-lg);
}
.login-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}
.login-logo h2 { font-size: 22px; font-weight: 700; }
.login-box > p { color: var(--text-3); margin-bottom: 28px; font-size: 13px; }
.login-box input {
    display: block;
    width: 100%;
    padding: 11px 16px;
    margin-bottom: 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 14px;
    font-family: var(--font);
    outline: none;
    transition: border-color var(--transition);
}
.login-box input:focus { border-color: var(--primary); }
.login-error { color: var(--danger); font-size: 13px; margin-top: 8px; min-height: 20px; }

/* ============================================================
   Buttons
   ============================================================ */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: all var(--transition);
    width: 100%;
}
.btn-primary:hover { background: var(--primary-h); transform: translateY(-1px); }
.btn-primary.btn-sm { width: auto; padding: 7px 16px; font-size: 13px; }
.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    font-weight: 500;
    font-family: var(--font);
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.btn-ghost {
    background: transparent;
    color: var(--text-2);
    border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text); border-color: var(--primary); }
.btn-danger { background: var(--danger); color: #fff; border: none; }
.btn-danger:hover { opacity: .85; }
.btn-success { background: var(--success); color: #fff; border: none; }
.btn-success:hover { opacity: .85; }

/* ============================================================
   Layout: Sidebar + Main
   ============================================================ */
.admin-app {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-w);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: width var(--transition), transform var(--transition);
    z-index: 200;
}
.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 18px 20px;
    font-size: 16px;
    font-weight: 700;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.sidebar-nav {
    flex: 1;
    padding: 12px 10px;
    overflow-y: auto;
}
.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--radius);
    color: var(--text-2);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition);
    margin-bottom: 2px;
    white-space: nowrap;
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }
.nav-item:hover { background: var(--bg-hover); color: var(--text); }
.nav-item.active { background: var(--primary-bg); color: var(--primary); font-weight: 600; }
.sidebar-footer {
    padding: 14px 16px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.sidebar-user {
    font-size: 12px;
    color: var(--text-2);
    background: var(--bg-input);
    padding: 4px 10px;
    border-radius: 20px;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

/* Top Bar */
.topbar {
    height: var(--topbar-h);
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.topbar-title { font-size: 16px; font-weight: 600; flex: 1; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.topbar-badge {
    font-size: 11px;
    padding: 3px 10px;
    background: var(--primary);
    color: #fff;
    border-radius: 20px;
    font-weight: 600;
}
.topbar-refresh {
    font-size: 11px;
    color: var(--text-3);
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-2);
    cursor: pointer;
    padding: 4px;
}
.sidebar-toggle svg { width: 22px; height: 22px; }

/* ============================================================
   Tab Content
   ============================================================ */
.tab-content {
    display: none;
    padding: 24px;
    overflow-y: auto;
    flex: 1;
}
.tab-content.active { display: block; }
.tab-header {
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.tab-header h3 { font-size: 18px; font-weight: 700; }
.tab-header p { color: var(--text-3); font-size: 13px; width: 100%; }
.tab-actions { display: flex; gap: 8px; }

/* ============================================================
   KPI Grid
   ============================================================ */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.kpi-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 14px;
    box-shadow: var(--shadow);
    transition: border-color var(--transition), transform var(--transition);
}
.kpi-card:hover { border-color: var(--border-light); transform: translateY(-2px); }
.kpi-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.kpi-icon svg { width: 20px; height: 20px; }
.kpi-icon-blue { background: var(--primary-bg); color: var(--primary); }
.kpi-icon-green { background: var(--success-bg); color: var(--success); }
.kpi-icon-red { background: var(--danger-bg); color: var(--danger); }
.kpi-icon-amber { background: var(--warn-bg); color: var(--warn); }
.kpi-icon-purple { background: var(--purple-bg); color: var(--purple); }
.kpi-icon-cyan { background: var(--info-bg); color: var(--info); }
.kpi-body { flex: 1; min-width: 0; }
.kpi-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--text-3);
    margin-bottom: 4px;
}
.kpi-value { font-size: 26px; font-weight: 700; line-height: 1.2; }
.kpi-sub { font-size: 11px; color: var(--text-3); margin-top: 4px; }
.kpi-card.alert { border-color: var(--danger); }
.kpi-card.alert .kpi-value { color: var(--danger); }

/* ============================================================
   Alerts Banner
   ============================================================ */
.alerts-banner {
    background: var(--danger-bg);
    border: 1px solid rgba(239,68,68,.25);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    margin-bottom: 20px;
}
.alert-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    font-size: 13px;
    color: var(--danger);
}
.alert-item svg { width: 16px; height: 16px; flex-shrink: 0; }
.alert-item.warn { color: var(--warn); }
.alert-item.info { color: var(--info); }

/* ============================================================
   Charts
   ============================================================ */
.charts-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}
.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow);
}
.chart-card h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-2);
    margin-bottom: 16px;
}
.chart-card canvas { max-height: 260px; }

/* ============================================================
   Panels
   ============================================================ */
.panels-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}
.panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.panel h3 {
    font-size: 13px;
    font-weight: 600;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-2);
}
.panel-body { padding: 16px 20px; min-height: 100px; }
.panel-body.scrollable { max-height: 500px; overflow-y: auto; }

/* ============================================================
   Status Rows
   ============================================================ */
.status-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}
.status-row:last-child { border-bottom: none; }
.status-label { color: var(--text-2); }
.status-value { font-weight: 500; display: flex; align-items: center; gap: 6px; }

.dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}
.dot-ok { background: var(--success); box-shadow: 0 0 6px var(--success); }
.dot-warn { background: var(--warn); box-shadow: 0 0 6px var(--warn); }
.dot-err { background: var(--danger); box-shadow: 0 0 6px var(--danger); }
.dot-off { background: var(--text-3); }

/* ============================================================
   Model Cards
   ============================================================ */
.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}
.model-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: border-color var(--transition);
}
.model-card:hover { border-color: var(--primary); }
.model-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}
.model-stufe {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary);
}
.model-version {
    font-size: 12px;
    padding: 3px 10px;
    background: var(--primary-bg);
    color: var(--primary);
    border-radius: 20px;
    font-weight: 600;
}
.model-name { font-size: 16px; font-weight: 600; margin-bottom: 16px; }
.model-metrics { display: flex; flex-direction: column; gap: 10px; }
.model-metric {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
}
.model-metric-label { color: var(--text-2); }
.model-metric-value { font-weight: 600; }

.metric-bar {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 4px;
}
.metric-bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width .5s ease;
}
.bar-green { background: var(--success); }
.bar-blue { background: var(--primary); }
.bar-amber { background: var(--warn); }
.bar-red { background: var(--danger); }

/* ============================================================
   Training Status
   ============================================================ */
.training-status {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}
.training-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow);
}
.training-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}
.training-card-title { font-size: 14px; font-weight: 600; }
.training-ready {
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 20px;
    font-weight: 600;
}
.training-ready.yes { background: var(--success-bg); color: var(--success); }
.training-ready.no { background: var(--border); color: var(--text-3); }

.progress-bar {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
    margin: 10px 0;
}
.progress-fill {
    height: 100%;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--primary), var(--info));
    transition: width .5s ease;
}

/* ============================================================
   Feedback Grid
   ============================================================ */
.feedback-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}
.feedback-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow);
    text-align: center;
}
.feedback-card .big-number { font-size: 36px; font-weight: 700; margin: 8px 0; }
.feedback-card .sub-text { font-size: 12px; color: var(--text-3); }

/* ============================================================
   Tables
   ============================================================ */
.data-table {
    width: 100%;
    border-collapse: collapse;
}
.data-table th {
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--text-3);
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: var(--bg-card);
}
.data-table td {
    padding: 9px 12px;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
    color: var(--text-2);
}
.data-table tr:hover td { background: var(--bg-card-hover); }

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .3px;
}
.badge-ok { background: var(--success-bg); color: var(--success); }
.badge-err { background: var(--danger-bg); color: var(--danger); }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-neutral { background: var(--border); color: var(--text-2); }

/* ============================================================
   Security Metrics
   ============================================================ */
.sec-metric {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}
.sec-metric:last-child { border-bottom: none; }
.sec-label { color: var(--text-2); font-size: 13px; }
.sec-count { font-size: 20px; font-weight: 700; min-width: 40px; text-align: right; }
.count-zero { color: var(--success); }
.count-low { color: var(--warn); }
.count-high { color: var(--danger); }

/* ============================================================
   Event Filters
   ============================================================ */
.event-filters { display: flex; gap: 4px; }
.filter-btn {
    padding: 4px 12px;
    font-size: 11px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: transparent;
    color: var(--text-3);
    cursor: pointer;
    font-family: var(--font);
    transition: all var(--transition);
}
.filter-btn:hover { border-color: var(--primary); color: var(--text); }
.filter-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ============================================================
   User Rows
   ============================================================ */
.user-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}
.user-row:last-child { border-bottom: none; }
.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-bg);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
    flex-shrink: 0;
}
.user-name { font-weight: 500; flex: 1; }
.user-role { font-size: 11px; color: var(--text-3); }
.user-meta { color: var(--text-3); font-size: 11px; }

/* ============================================================
   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: 3000;
}
.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 32px;
    width: 460px;
    max-width: 90vw;
    box-shadow: var(--shadow-lg);
}
.modal h3 { font-size: 18px; margin-bottom: 20px; }
.modal-field { margin-bottom: 16px; }
.modal-field label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-2);
    margin-bottom: 6px;
}
.modal-field input, .modal-field select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 14px;
    font-family: var(--font);
    outline: none;
}
.modal-field input:focus, .modal-field select:focus { border-color: var(--primary); }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 24px; }

/* ============================================================
   Loader
   ============================================================ */
.loader {
    display: flex;
    justify-content: center;
    padding: 30px;
}
.loader::after {
    content: "";
    width: 28px;
    height: 28px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   Toast Notifications
   ============================================================ */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 4000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 20px;
    font-size: 13px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideIn .3s ease;
    max-width: 400px;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.info { border-left: 3px solid var(--info); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
    .sidebar { position: fixed; left: 0; top: 0; bottom: 0; transform: translateX(-100%); z-index: 500; }
    .sidebar.open { transform: translateX(0); }
    .sidebar-toggle { display: block; }
    .charts-row { grid-template-columns: 1fr; }
    .panels-grid { grid-template-columns: 1fr; }
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .kpi-grid { grid-template-columns: 1fr; }
    .tab-content { padding: 16px; }
    .models-grid { grid-template-columns: 1fr; }
    .training-status { grid-template-columns: 1fr; }
    .feedback-grid { grid-template-columns: 1fr; }
}