/* ============================================================
   CRUISE EXPERIENCE INTELLIGENCE PLATFORM — Design System
   Canonical neutral branding (Cartesys reference template)
   IBM Plex font stack · Maritime institutional palette
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Serif:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --navy-900:  #0A1A2F;
  --navy-800:  #142A4A;
  --navy-700:  #1F3D66;
  --navy-600:  #2E5086;
  --slate-700: #3C4A5E;
  --slate-500: #6A7585;
  --slate-400: #8B95A5;
  --slate-300: #C0C7D1;
  --slate-200: #DEE3EB;
  --slate-100: #EEF1F5;
  --slate-50:  #F6F8FB;
  --paper:     #FBFCFD;
  --white:     #FFFFFF;
  --accent-blue: #2E6FC7;
  --accent-teal: #007A6E;
  --accent-gold: #B8893A;
  --crit:      #8B1A1A;
  --crit-bg:   #FBEAEA;
  --high:      #9C5A0E;
  --high-bg:   #FBF2E5;
  --med:       #555E6D;
  --med-bg:    #ECEEF2;
  --pass:      #1F6E3A;
  --pass-bg:   #E5F2EA;
  --shadow-sm: 0 1px 2px rgba(14,26,51,0.06);
  --shadow-md: 0 2px 8px rgba(14,26,51,0.08);
  --shadow-lg: 0 8px 24px rgba(14,26,51,0.10);
  --radius-sm: 3px;
  --radius-md: 4px;
  --radius-lg: 6px;
}

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

html, body {
  height: 100%;
  font-family: 'IBM Plex Sans', -apple-system, sans-serif;
  font-size: 14px;
  color: var(--navy-900);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

/* ============================================================
   LAYOUT — sidebar + main
   ============================================================ */
.app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--navy-900);
  color: var(--slate-300);
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--navy-800);
  overflow-y: auto;
}

.sidebar-brand {
  padding: 20px 18px 16px;
  border-bottom: 1px solid var(--navy-800);
}

.sidebar-brand .mark {
  font-family: 'IBM Plex Serif', serif;
  font-weight: 600;
  font-size: 17px;
  color: var(--white);
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.sidebar-brand .mark em { font-style: italic; font-weight: 400; color: var(--slate-400); }

.sidebar-brand .sub {
  font-size: 10px;
  color: var(--slate-400);
  margin-top: 3px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
}

.sidebar-section { padding: 14px 10px 6px; }

.sidebar-section-label {
  font-size: 9px;
  color: var(--slate-500);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  padding: 0 8px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 10px;
  border-radius: var(--radius-md);
  color: var(--slate-300);
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.1s, color 0.1s;
  margin-bottom: 1px;
  user-select: none;
}

.nav-item:hover { background: var(--navy-800); color: var(--white); }
.nav-item.active { background: var(--navy-700); color: var(--white); }

.nav-item .badge {
  margin-left: auto;
  background: var(--crit);
  color: var(--white);
  font-size: 10px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 8px;
  font-family: 'IBM Plex Mono', monospace;
}

.nav-item .badge.warn { background: var(--high); }
.nav-item .badge.info { background: var(--accent-blue); }

.nav-icon {
  width: 15px;
  height: 15px;
  max-width: 15px;
  max-height: 15px;
  flex-shrink: 0;
  color: currentColor;
  display: inline-block;
  vertical-align: middle;
}

.sidebar-footer {
  margin-top: auto;
  padding: 14px 18px;
  border-top: 1px solid var(--navy-800);
}

.user { display: flex; align-items: center; gap: 9px; }

.avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-blue), var(--navy-700));
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
}

.user-info { line-height: 1.3; }
.user-info .name { color: var(--white); font-size: 12px; font-weight: 500; }
.user-info .role { color: var(--slate-400); font-size: 10px; }

.main {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.topbar {
  height: 52px;
  background: var(--white);
  border-bottom: 1px solid var(--slate-200);
  display: flex;
  align-items: center;
  padding: 0 24px;
  flex-shrink: 0;
}

.breadcrumb {
  font-size: 12px;
  color: var(--slate-500);
  display: flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb .sep { color: var(--slate-300); }
.breadcrumb .current { color: var(--navy-900); font-weight: 500; }

.topbar-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.env-pill {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  font-weight: 500;
  padding: 3px 8px;
  background: var(--high-bg);
  color: var(--high);
  border-radius: 3px;
}

.timestamp {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--slate-500);
}

.content {
  flex: 1;
  overflow-y: auto;
  background: var(--paper);
}

.screen-header {
  padding: 24px 28px 18px;
  background: var(--white);
  border-bottom: 1px solid var(--slate-200);
}

.screen-title {
  font-family: 'IBM Plex Serif', serif;
  font-size: 24px;
  font-weight: 500;
  color: var(--navy-900);
  letter-spacing: -0.015em;
  line-height: 1.2;
}

.screen-subtitle {
  font-size: 13px;
  color: var(--slate-500);
  margin-top: 5px;
  line-height: 1.5;
  max-width: 760px;
}

/* ============================================================
   SHARED COMPONENTS
   ============================================================ */

.sev {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  font-weight: 600;
  padding: 3px 7px;
  border-radius: 3px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.sev.crit { background: var(--crit-bg); color: var(--crit); }
.sev.high { background: var(--high-bg); color: var(--high); }
.sev.med  { background: var(--med-bg); color: var(--med); }

.card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  margin-bottom: 14px;
  overflow: hidden;
}

.card-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--slate-200);
  background: var(--slate-50);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--navy-900);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.card-meta {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--slate-500);
}

.card-body { padding: 16px; }

.btn {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 12px;
  font-weight: 500;
  padding: 7px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--slate-300);
  background: var(--white);
  color: var(--navy-900);
  cursor: pointer;
  transition: all 0.1s;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.btn:hover { background: var(--slate-50); border-color: var(--slate-400); }
.btn.primary { background: var(--navy-800); color: var(--white); border-color: var(--navy-800); }
.btn.primary:hover { background: var(--navy-700); }

.filter-group {
  display: flex;
  background: var(--slate-100);
  border-radius: var(--radius-md);
  padding: 2px;
}

.filter-pill {
  padding: 5px 10px;
  font-size: 11px;
  font-weight: 500;
  color: var(--slate-700);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.1s;
  user-select: none;
}

.filter-pill.active {
  background: var(--white);
  color: var(--navy-900);
  box-shadow: var(--shadow-sm);
}

.stat-row {
  display: flex;
  gap: 1px;
  background: var(--slate-200);
  border-bottom: 1px solid var(--slate-200);
}

.stat {
  flex: 1;
  background: var(--white);
  padding: 14px 20px;
}

.stat-label {
  font-size: 9px;
  color: var(--slate-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.stat-value {
  font-family: 'IBM Plex Serif', serif;
  font-size: 26px;
  font-weight: 500;
  color: var(--navy-900);
  margin-top: 3px;
  line-height: 1;
}

.stat-value.crit { color: var(--crit); }
.stat-value.high { color: var(--high); }

.stat-delta {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--slate-500);
  margin-top: 3px;
}

.data-table {
  width: 100%;
  background: var(--white);
  border-collapse: collapse;
  font-size: 12px;
}

.data-table thead th {
  text-align: left;
  padding: 8px 14px;
  background: var(--slate-50);
  font-weight: 600;
  font-size: 9px;
  color: var(--slate-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--slate-200);
  border-top: 1px solid var(--slate-200);
}

.data-table tbody tr {
  border-bottom: 1px solid var(--slate-200);
  transition: background 0.08s;
}
.data-table tbody tr:hover { background: var(--slate-50); }

.data-table td {
  padding: 10px 14px;
  vertical-align: middle;
  color: var(--navy-900);
}

.mono {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--slate-500);
}

.validator-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  font-weight: 500;
  color: var(--slate-500);
}

.validator-pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--pass);
}

.verdict-pill {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 3px;
  text-transform: uppercase;
}
.verdict-pill.pass { background: var(--pass-bg); color: var(--pass); }
.verdict-pill.fail { background: var(--crit-bg); color: var(--crit); }

.route-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--navy-800);
  color: var(--white);
  padding: 3px 8px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: 'IBM Plex Mono', monospace;
}
.route-badge.narrative { background: var(--accent-teal); }
.route-badge.hybrid { background: var(--accent-blue); }

.panel-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--navy-900);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.api-tag {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  font-weight: 500;
  padding: 2px 5px;
  background: var(--slate-100);
  color: var(--slate-700);
  border-radius: 2px;
  border: 1px solid var(--slate-200);
}

.api-tag.ship { background: #E3F2FD; color: #0D47A1; border-color: #BBDEFB; }
.api-tag.ai { background: #E8EAF6; color: #283593; border-color: #C5CAE9; }
.api-tag.signal { background: #E0F2F1; color: #004D40; border-color: #B2DFDB; }

.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--navy-900);
  color: var(--white);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  font-size: 12px;
  box-shadow: var(--shadow-lg);
  transform: translateY(80px);
  opacity: 0;
  transition: all 0.25s ease;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 380px;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--pass); flex-shrink: 0; }

.demo-banner {
  position: fixed;
  bottom: 10px;
  right: 10px;
  background: var(--navy-900);
  color: var(--slate-300);
  padding: 4px 9px;
  border-radius: 3px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.04em;
  z-index: 50;
  opacity: 0.8;
}
.demo-banner strong { color: var(--white); }