/* ==========================================================================
   Gistorian Dashboard - Professional Stylesheet
   ========================================================================== */

/* ---- CSS Variables ---- */
:root {
  --bg-primary: #0b0e14;
  --bg-secondary: #131720;
  --bg-card: #181d27;
  --bg-hover: #1e2430;
  --border-color: #252b36;
  --border-light: #2d3440;
  --text-primary: #e6e8ec;
  --text-secondary: #8a909e;
  --text-muted: #5c6270;
  --accent: #4a8fe7;
  --accent-hover: #5d9df0;
  --accent-dim: rgba(74, 143, 231, 0.12);
  --success: #34b863;
  --success-dim: rgba(52, 184, 99, 0.12);
  --warning: #e5a125;
  --warning-dim: rgba(229, 161, 37, 0.12);
  --danger: #e74c4c;
  --danger-dim: rgba(231, 76, 76, 0.12);
  --info: #5ba0d0;
  --info-dim: rgba(91, 160, 208, 0.12);
  --radius: 8px;
  --radius-sm: 5px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.4);
  --transition: 150ms ease;
}

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

html {
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

h2 {
  font-size: 1.25rem;
  margin: 1.5rem 0 0.75rem;
  padding-bottom: 0.625rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.75rem;
}

h3 {
  font-size: 1rem;
  margin: 1rem 0 0.5rem;
}

p {
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

small {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---- Layout ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- Header / Navigation ---- */
.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 3.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.logo:hover {
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
}

.breadcrumb a:hover {
  color: var(--text-primary);
}

.breadcrumb-separator {
  color: var(--text-muted);
}

/* ---- Cards ---- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: var(--border-light);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
}

.card-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.card-body {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* ---- Metrics Grid ---- */
.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}

.metric {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.metric-value {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.metric-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.375rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.metric-warning .metric-value {
  color: var(--warning);
}

.metric-critical .metric-value {
  color: var(--danger);
}

.metric-success .metric-value {
  color: var(--success);
}

/* ---- Tables ---- */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin: 0.75rem 0;
}

thead {
  background: var(--bg-secondary);
}

th {
  text-align: left;
  padding: 0.625rem 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--border-color);
}

td {
  padding: 0.625rem 0.875rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

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

.table-empty {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-muted);
  font-style: italic;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
}

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

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

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--danger-dim);
  color: var(--danger);
  border: 1px solid transparent;
}

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

.btn-sm {
  padding: 0.3rem 0.625rem;
  font-size: 0.78rem;
}

/* ---- Badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 10px;
  letter-spacing: 0.02em;
  line-height: 1.5;
}

.badge-success {
  background: var(--success-dim);
  color: var(--success);
}

.badge-warning {
  background: var(--warning-dim);
  color: var(--warning);
}

.badge-danger {
  background: var(--danger-dim);
  color: var(--danger);
}

.badge-info {
  background: var(--info-dim);
  color: var(--info);
}

.badge-muted {
  background: var(--bg-hover);
  color: var(--text-muted);
}

/* ---- Status Indicator ---- */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 0.375rem;
  flex-shrink: 0;
}

.status-dot.active {
  background: var(--success);
  box-shadow: 0 0 6px rgba(52, 184, 99, 0.5);
}

.status-dot.pending {
  background: var(--warning);
  box-shadow: 0 0 6px rgba(229, 161, 37, 0.5);
}

.status-dot.idle {
  background: var(--text-muted);
}

.status-dot.critical {
  background: var(--danger);
  box-shadow: 0 0 6px rgba(231, 76, 76, 0.5);
}

/* ---- Alerts ---- */
.alert-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  margin: 0.5rem 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}

.alert-item:hover {
  border-color: var(--border-light);
}

.alert-severity-bar {
  width: 4px;
  min-height: 100%;
  border-radius: 2px;
  flex-shrink: 0;
}

.alert-severity-bar.critical {
  background: var(--danger);
}

.alert-severity-bar.warning {
  background: var(--warning);
}

.alert-severity-bar.info {
  background: var(--info);
}

.alert-content {
  flex: 1;
  min-width: 0;
}

.alert-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.alert-title {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.alert-message {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.alert-time {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.alert-actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.alert-empty {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.alert-empty-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  display: block;
  opacity: 0.5;
}

/* ---- Chart Container ---- */
.chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin: 0.75rem 0;
  box-shadow: var(--shadow);
}

.chart-container canvas {
  width: 100%;
  max-height: 320px;
}

/* ---- Page Sections ---- */
.page-header {
  margin-bottom: 1.5rem;
}

.page-header h1 {
  margin-bottom: 0.25rem;
}

.page-subtitle {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.section {
  margin: 1.5rem 0;
}

/* ---- Empty State ---- */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  opacity: 0.3;
}

.empty-state-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.empty-state-text {
  max-width: 400px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ---- Utility ---- */
.mt-1 {
  margin-top: 0.5rem;
}

.mt-2 {
  margin-top: 1rem;
}

.mt-3 {
  margin-top: 1.5rem;
}

.mb-1 {
  margin-bottom: 0.5rem;
}

.mb-2 {
  margin-bottom: 1rem;
}

.text-center {
  text-align: center;
}

.text-muted {
  color: var(--text-muted);
}

.text-secondary {
  color: var(--text-secondary);
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---- Header Nav ---- */
.header-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  padding: 0.25rem 0;
  transition: color var(--transition);
}

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

.nav-user {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.nav-credits {
  color: var(--success);
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--success-dim);
  padding: 0.2rem 0.6rem;
  border-radius: 10px;
  white-space: nowrap;
}

.nav-credits.low {
  color: var(--warning);
  background: var(--warning-dim);
}

/* ---- Breadcrumbs ---- */
.breadcrumbs {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0.5rem 0;
}

.breadcrumbs .container {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
}

.breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--accent);
  text-decoration: none;
}

.breadcrumb-sep {
  color: var(--text-muted);
}

.breadcrumb-current {
  color: var(--text-primary);
  font-weight: 500;
}

/* ---- Admin Panel ---- */
.admin-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.stat-card .stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}

.stat-card.alert .stat-value {
  color: var(--warning);
}

.stat-card .stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
  margin-top: 0.25rem;
}

.admin-sections {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.admin-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.admin-section h2 {
  margin-top: 0;
}

.admin-table {
  font-size: 0.825rem;
  margin-top: 0.75rem;
}

.admin-table th,
.admin-table td {
  padding: 0.5rem 0.625rem;
}

/* ---- Badge Variants ---- */
.badge-active {
  background: var(--success-dim);
  color: var(--success);
}

.badge-inactive {
  background: var(--bg-hover);
  color: var(--text-muted);
}

.badge-admin {
  background: var(--accent-dim);
  color: var(--accent);
}

.badge-member {
  background: var(--bg-hover);
  color: var(--text-secondary);
}

.badge-free {
  background: var(--bg-hover);
  color: var(--text-muted);
}

.badge-pro {
  background: var(--info-dim);
  color: var(--info);
}

.badge-enterprise {
  background: var(--accent-dim);
  color: var(--accent);
}

/* ---- Forms ---- */
.inline-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.inline-form input,
.inline-form select {
  padding: 0.4rem 0.6rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.825rem;
  font-family: inherit;
}

.inline-form input:focus,
.inline-form select:focus {
  outline: none;
  border-color: var(--accent);
}

.inline-form input::placeholder {
  color: var(--text-muted);
}

/* ---- Button Sizes ---- */
.btn-xs {
  padding: 0.2rem 0.5rem;
  font-size: 0.72rem;
  border-radius: 3px;
}

/* ---- Hidden ---- */
.hidden {
  display: none;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  .container {
    padding: 0 1rem;
  }

  .metrics {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
  }

  .metric {
    padding: 1rem;
  }

  .metric-value {
    font-size: 1.75rem;
  }

  table {
    font-size: 0.8rem;
  }

  th, td {
    padding: 0.5rem 0.625rem;
  }
}