:root {
  /* Neutral application palette */
  --background: #f6f7f9;
  --surface: #ffffff;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f8fafc;
  --surface-container: #f1f5f9;
  --surface-container-high: #e2e8f0;
  --surface-container-highest: #cbd5e1;
  --surface-dim: #e5e7eb;
  --surface-bright: #ffffff;
  --surface-variant: #e2e8f0;

  --on-background: #111827;
  --on-surface: #111827;
  --on-surface-variant: #475569;
  --muted: #64748b;
  --outline: #64748b;
  --outline-variant: #d0d7de;

  /* Action palette */
  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --primary-active: #1e3a8a;
  --on-primary: #ffffff;
  --primary-container: #dbeafe;
  --on-primary-container: #1e3a8a;
  --secondary: #334155;
  --on-secondary: #ffffff;
  --secondary-container: #e2e8f0;
  --on-secondary-container: #1f2937;

  /* Semantic states */
  --success: #047857;
  --success-container: #d1fae5;
  --warning: #b45309;
  --warning-container: #fef3c7;
  --error: #b91c1c;
  --error-container: #fee2e2;
  --info: #0369a1;
  --info-container: #e0f2fe;

  --status-draft: #64748b;
  --status-reserved: #b45309;
  --status-paid: #047857;
  --status-boarded: #1d4ed8;
  --status-cancelled: #b91c1c;

  /* Typography */
  --font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --text-xs: 12px;
  --text-sm: 13px;
  --text-md: 14px;
  --text-lg: 18px;
  --text-xl: 24px;
  --line-sm: 18px;
  --line-md: 20px;
  --line-lg: 28px;

  /* Layout */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 28px rgba(15, 23, 42, 0.08);
  --focus-ring: 0 0 0 3px rgba(29, 78, 216, 0.2);
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(246, 247, 249, 0) 180px),
    var(--background);
  color: var(--on-surface);
  font-family: var(--font-family);
  font-size: var(--text-md);
  line-height: var(--line-md);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
[type="button"],
[type="submit"],
a[href],
input,
select,
textarea {
  outline: none;
}

:focus-visible {
  outline: 2px solid transparent;
  box-shadow: var(--focus-ring);
}

::selection {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

/* Shell */
.topbar,
header.fixed {
  backdrop-filter: saturate(160%) blur(14px);
}

.app-content-wrapper {
  min-height: 100vh;
}

.main-content {
  width: min(100%, 1600px);
  margin: 0 auto;
  padding: var(--spacing-lg);
}

/* Surfaces */
.card,
.report-card,
.login-card,
.custom-shadow {
  box-shadow: var(--shadow-sm);
}

.card {
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
}

.custom-shadow {
  box-shadow: var(--shadow-sm);
}

/* Inputs */
input:not([type="checkbox"]):not([type="radio"]),
select,
textarea,
.form-input {
  min-height: 40px;
  width: 100%;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  background-color: var(--surface);
  color: var(--on-surface);
  transition: border-color 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
}

input:not([type="checkbox"]):not([type="radio"]):hover,
select:hover,
textarea:hover,
.form-input:hover {
  border-color: #94a3b8;
}

input:not([type="checkbox"]):not([type="radio"]):focus,
select:focus,
textarea:focus,
.form-input:focus {
  border-color: var(--primary);
  box-shadow: var(--focus-ring);
}

input::placeholder,
textarea::placeholder {
  color: #94a3b8;
}

input[type="checkbox"],
input[type="radio"] {
  border-color: var(--outline-variant);
  color: var(--primary);
}

input[type="checkbox"]:focus-visible,
input[type="radio"]:focus-visible {
  box-shadow: var(--focus-ring);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--on-surface-variant);
  font-size: var(--text-sm);
  font-weight: 600;
}

/* Buttons */
.btn,
button,
a[class*="bg-[#2563EB]"],
button[class*="bg-[#2563EB]"] {
  border-radius: var(--radius-lg);
}

a[class*="bg-[#2563EB]"],
button[class*="bg-[#2563EB]"] {
  background-color: var(--primary) !important;
  color: var(--on-primary) !important;
}

a[class*="bg-[#2563EB]"]:hover,
button[class*="bg-[#2563EB]"]:hover {
  background-color: var(--primary-hover) !important;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  min-height: 40px;
  padding: 0 var(--spacing-md);
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

.btn:active,
button:active {
  transform: translateY(1px);
}

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

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

.btn-secondary {
  background: var(--surface);
  border-color: var(--outline-variant);
  color: var(--secondary);
}

.btn-secondary:hover {
  background: var(--surface-container-low);
}

/* Tables */
table {
  border-color: var(--outline-variant);
}

thead th {
  color: var(--on-surface-variant);
  font-weight: 700;
}

tbody tr {
  transition: background-color 0.12s ease;
}

tbody tr:hover {
  background-color: var(--surface-container-low);
}

/* Badges */
.status-badge,
[class*="text-status-badge"] {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  min-height: 24px;
  border-radius: var(--radius-full);
  padding: 0 10px;
  font-weight: 700;
}

/* Material Symbols */
.material-symbols-outlined {
  font-variation-settings: "FILL" 0, "wght" 450, "GRAD" 0, "opsz" 24;
  line-height: 1;
  vertical-align: middle;
}

/* Utilities kept for legacy views */
.mb-4 { margin-bottom: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-md); }
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }
.w-full { width: 100%; }
.text-center { text-align: center; }
.gap-4 { gap: var(--spacing-md); }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}