/* ==========================================================================
   Incirova ITSM Pilot SaaS Design System - Premium White-First Enterprise
   ========================================================================== */

:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Surfaces & Backgrounds */
  --bg-app: #f8fafc;
  --bg-card: #ffffff;
  --bg-sidebar: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-hover: #f8fafc;

  /* Borders & Dividers */
  --border-subtle: #f1f5f9;
  --border-default: #e2e8f0;
  --border-strong: #cbd5e1;

  /* Typography */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-subtle: #94a3b8;

  /* Brand / Primary Accent */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --primary-ring: rgba(37, 99, 235, 0.2);

  /* Status Tokens */
  --success-text: #166534;
  --success-bg: #dcfce7;
  --success-border: #bbf7d0;

  --warning-text: #854d0e;
  --warning-bg: #fef9c3;
  --warning-border: #fef08a;

  --danger-text: #991b1b;
  --danger-bg: #fee2e2;
  --danger-border: #fecaca;

  /* Geometry & Shadows */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.07), 0 4px 6px -4px rgba(0, 0, 0, 0.07);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* App Shell Structure */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-default);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 40;
  transition: width 0.2s ease;
}

.sidebar-header {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
}

.brand-name {
  font-size: 15px;
  font-weight: 750;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.workspace-selector-wrap {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.workspace-select {
  width: 100%;
  padding: 8px 10px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  color: var(--text-primary);
  cursor: pointer;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 14px 12px;
}

.nav-group-label {
  font-size: 11px;
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-subtle);
  padding: 12px 10px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 550;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
  margin-bottom: 2px;
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 650;
}

.nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  stroke-width: 2;
}

.sidebar-footer {
  padding: 14px 16px;
  border-top: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.user-snippet {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 9999px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
}

.user-info-text {
  min-width: 0;
}

.user-email-label {
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 130px;
}

.btn-signout {
  background: transparent;
  border: none;
  color: var(--text-subtle);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
}

.btn-signout:hover {
  color: var(--danger-text);
  background: var(--danger-bg);
}

/* Main Content Area */
.main-viewport {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.top-bar {
  background: #ffffff;
  border-bottom: 1px solid var(--border-default);
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 30;
}

.top-title-area h1 {
  font-size: 18px;
  font-weight: 750;
  letter-spacing: -0.02em;
}

.top-status-badges {
  display: flex;
  align-items: center;
  gap: 10px;
}

.content-pane {
  padding: 28px 32px 64px;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
}

/* Tab Panels */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Cards & Surfaces */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 12px;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.card-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Metric Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-box {
  background: #ffffff;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}

.stat-label {
  font-size: 12px;
  font-weight: 650;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-value {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-top: 6px;
  color: var(--text-primary);
}

.stat-sub {
  font-size: 12px;
  color: var(--text-subtle);
  margin-top: 4px;
}

/* Forms & Inputs */
.form-grid {
  display: grid;
  gap: 16px;
}

.form-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.form-group {
  flex: 1;
  min-width: 220px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 13px;
  font-weight: 650;
  color: var(--text-secondary);
}

input[type="text"],
input[type="password"],
input[type="email"],
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  font-size: 13px;
  font-family: inherit;
  color: var(--text-primary);
  background: #ffffff;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  outline: none;
  transition: all 0.15s ease;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-ring);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 650;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-secondary {
  background: #ffffff;
  border-color: var(--border-default);
  color: var(--text-secondary);
}

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

.btn-danger {
  background: var(--danger-text);
  color: #ffffff;
}

.btn-danger:hover {
  background: #7f1d1d;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

/* Badges & Pills */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.badge-success {
  background: var(--success-bg);
  color: var(--success-text);
  border: 1px solid var(--success-border);
}

.badge-warning {
  background: var(--warning-bg);
  color: var(--warning-text);
  border: 1px solid var(--warning-border);
}

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger-text);
  border: 1px solid var(--danger-border);
}

.badge-neutral {
  background: var(--bg-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
}

/* Priority Badges */
.pri-1 { background: #fee2e2; color: #991b1b; }
.pri-2 { background: #fed7aa; color: #9a3412; }
.pri-3 { background: #fef9c3; color: #713f12; }
.pri-4 { background: #dcfce7; color: #166534; }
.pri-5 { background: #f1f5f9; color: #64748b; }

/* Tables */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background: var(--bg-subtle);
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-default);
}

td {
  padding: 12px 14px;
  font-size: 13px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

tr:last-child td {
  border-bottom: none;
}

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

/* Evidence Cards */
.evidence-card {
  background: #ffffff;
  border: 1px solid var(--border-default);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.evidence-card.cited {
  border-left-color: #10b981;
}

.evidence-header {
  background: var(--bg-subtle);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 10px;
}

.evidence-body {
  padding: 14px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.evidence-body.collapsed {
  max-height: 140px;
  overflow: hidden;
  position: relative;
}

.evidence-body.collapsed::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 50px;
  background: linear-gradient(to bottom, rgba(255,255,255,0), rgba(255,255,255,1));
  pointer-events: none;
}

.evidence-footer {
  padding: 6px 16px;
  background: #fafbfc;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: center;
}

/* Auth Modal Overlay */
.auth-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.auth-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 36px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-default);
}

.auth-header {
  text-align: center;
  margin-bottom: 24px;
}

.auth-header h2 {
  font-size: 20px;
  font-weight: 750;
  letter-spacing: -0.02em;
}

.auth-header p {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-default);
  margin-bottom: 20px;
}

.auth-tab {
  flex: 1;
  text-align: center;
  padding: 10px;
  font-size: 13px;
  font-weight: 650;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.auth-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Responsive */
@media (max-width: 860px) {
  .app-container {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    height: auto;
    position: relative;
    border-right: none;
    border-bottom: 1px solid var(--border-default);
  }
  .sidebar-nav {
    display: flex;
    overflow-x: auto;
    padding: 8px;
    gap: 4px;
  }
  .nav-group-label {
    display: none;
  }
  .nav-item {
    white-space: nowrap;
  }
  .content-pane {
    padding: 20px 16px 40px;
  }
}