:root {
  /* Colors */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #16a34a;
  --warning: #f59e0b;
  --error: #dc2626;
  --bg-main: #f9fafb;
  --bg-card: #ffffff;
  --text-main: #111827;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  
  /* Spacing (8px system) */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  
  /* Layout */
  --container-max: 1440px;
  --side-margin: 80px;
  --gutter: 24px;
  --nav-height: 72px;
  
  /* Components */
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Layout */
.navbar {
  height: var(--nav-height);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 var(--side-margin);
}

.nav-content {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.logo {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-4);
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: color 0.2s;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  border-radius: 50%;
  transition: background 0.2s;
}

.icon-btn:hover {
  background: var(--bg-main);
}

/* Main Content */
main {
  padding: var(--space-6) var(--side-margin);
  max-width: var(--container-max);
  margin: 0 auto;
}

.section-margin {
  margin-top: var(--space-6);
}

/* Welcome Section */
.welcome-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.welcome-text h1 {
  font-size: 1.875rem;
  font-weight: 700;
  margin-bottom: 4px;
}

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

.lease-countdown {
  width: 280px;
}

.countdown-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  margin-bottom: 8px;
}

.progress-bar {
  height: 6px;
  background: var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 10px;
}

/* Grid System */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gutter);
}

/* Cards */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-4);
}

.card-title {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.card-value {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 4px;
}

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

.card-footer {
  margin-top: auto;
  padding-top: var(--space-3);
}

/* Badges */
.badge {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
}

.badge-success { background: #dcfce7; color: var(--success); }
.badge-warning { background: #fef3c7; color: var(--warning); }
.badge-error { background: #fee2e2; color: var(--error); }
.badge-blue { background: #dbeafe; color: var(--primary); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  border: 1px solid transparent;
  gap: 8px;
}

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

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

.btn-outline {
  border-color: var(--border);
  background: white;
  color: var(--text-main);
}

.btn-outline:hover {
  background: var(--bg-main);
}

.btn-full {
  width: 100%;
}

.btn-lg {
  padding: 16px 24px;
  font-size: 1.0625rem;
}

/* Banner / Action Section */
.banner-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: var(--space-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.banner-content h2 {
  font-size: 1.25rem;
  margin-bottom: 4px;
}

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

/* Tables */
.table-container {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  margin-bottom: var(--space-6);
}

.table-header {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

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

th {
  background: var(--bg-main);
  padding: 12px 24px;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.05em;
}

td {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}

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

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

/* Modal / Form Overlay */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(17, 24, 39, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-4);
}

.modal {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  padding: var(--space-4);
}

.modal-footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
}

/* Form Styling */
.form-group {
  margin-bottom: var(--space-3);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  font-family: inherit;
  font-size: 0.9375rem;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  ring: 2px solid rgba(37, 99, 235, 0.2);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

/* Utils */
.placeholder-avatar {
  width: 32px;
  height: 32px;
  background: var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
}

.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-error { color: var(--error); }
.text-warning { color: var(--warning); }

/* Escalation State */
.escalation-banner {
  background: #fef2f2;
  border: 1px solid #fee2e2;
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--error);
  font-size: 0.875rem;
}

/* SLA Countdown Style */
.sla-display {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: monospace;
  font-weight: 600;
}