/* ============================================================
   Office Edge Design System
   Premium Executive Workspace — Design Tokens & Components
   ============================================================ */

/* ── 1. CSS Custom Properties (Design Tokens) ─────────────── */
:root {
  /* Color Palette */
  --color-navy:        #0d1b2a;
  --color-navy-mid:    #1a2e45;
  --color-navy-light:  #243b55;
  --color-charcoal:    #2c3e50;
  --color-charcoal-mid:#3d5166;
  --color-gold:        #b8960c;
  --color-gold-light:  #d4af37;
  --color-gold-pale:   #f5e9b0;
  --color-white:       #ffffff;
  --color-off-white:   #f8f9fb;
  --color-gray-100:    #f1f3f6;
  --color-gray-200:    #e2e6ec;
  --color-gray-300:    #c8d0db;
  --color-gray-400:    #9aaab8;
  --color-gray-500:    #6b7d8f;
  --color-gray-600:    #4a5a6a;
  --color-success:     #1a7f5a;
  --color-success-bg:  #e8f5f0;
  --color-warning:     #b87c0c;
  --color-warning-bg:  #fdf3dc;
  --color-error:       #b82020;
  --color-error-bg:    #fdeaea;
  --color-info:        #1a4f7f;
  --color-info-bg:     #e8f0fb;

  /* Typography */
  --font-sans:    'Georgia', 'Times New Roman', serif;
  --font-ui:      -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    'Courier New', monospace;

  --text-xs:    0.75rem;
  --text-sm:    0.875rem;
  --text-base:  1rem;
  --text-lg:    1.125rem;
  --text-xl:    1.25rem;
  --text-2xl:   1.5rem;
  --text-3xl:   1.875rem;
  --text-4xl:   2.25rem;

  --weight-normal:  400;
  --weight-medium:  500;
  --weight-semi:    600;
  --weight-bold:    700;

  --leading-tight:  1.25;
  --leading-snug:   1.375;
  --leading-normal: 1.5;
  --leading-relaxed:1.625;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Borders */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs:  0 1px 2px rgba(13,27,42,0.06);
  --shadow-sm:  0 2px 6px rgba(13,27,42,0.08);
  --shadow-md:  0 4px 16px rgba(13,27,42,0.10);
  --shadow-lg:  0 8px 32px rgba(13,27,42,0.14);
  --shadow-xl:  0 16px 48px rgba(13,27,42,0.18);
  --shadow-gold:0 4px 20px rgba(184,150,12,0.20);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;

  /* Layout */
  --container-max: 1200px;
  --sidebar-width: 260px;
}

/* ── 2. Reset & Base ──────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-ui);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-charcoal);
  background-color: var(--color-off-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }
ul, ol { list-style: none; }

/* ── 3. Typography ────────────────────────────────────────── */
.heading-display {
  font-family: var(--font-sans);
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--color-navy);
  letter-spacing: -0.02em;
}

.heading-1 {
  font-family: var(--font-sans);
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--color-navy);
  letter-spacing: -0.01em;
}

.heading-2 {
  font-family: var(--font-sans);
  font-size: var(--text-2xl);
  font-weight: var(--weight-semi);
  line-height: var(--leading-snug);
  color: var(--color-navy);
}

.heading-3 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semi);
  line-height: var(--leading-snug);
  color: var(--color-navy);
}

.heading-4 {
  font-size: var(--text-lg);
  font-weight: var(--weight-semi);
  color: var(--color-charcoal);
}

.text-lead {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-gray-600);
}

.text-body {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-charcoal);
}

.text-sm {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-gray-500);
}

.text-xs {
  font-size: var(--text-xs);
  line-height: var(--leading-normal);
  color: var(--color-gray-400);
}

.text-gold { color: var(--color-gold-light); }
.text-navy { color: var(--color-navy); }
.text-muted { color: var(--color-gray-500); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }

/* ── 4. Layout Utilities ──────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-16) 0;
}

.section-sm {
  padding: var(--space-10) 0;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }

.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* ── 5. Page Header / Nav ─────────────────────────────────── */
.site-header {
  background: var(--color-navy);
  border-bottom: 1px solid var(--color-navy-light);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.site-logo-mark {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-gold-light), var(--color-gold));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--weight-bold);
  font-size: var(--text-sm);
  color: var(--color-navy);
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.site-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.site-logo-name {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  color: var(--color-white);
  letter-spacing: 0.04em;
}

.site-logo-tagline {
  font-size: var(--text-xs);
  color: var(--color-gold-light);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.site-nav a {
  font-size: var(--text-sm);
  color: var(--color-gray-300);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-white);
  background: rgba(255,255,255,0.08);
}

.site-nav a.active {
  color: var(--color-gold-light);
}

/* ── 6. Page Hero ─────────────────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-mid) 60%, var(--color-navy-light) 100%);
  padding: var(--space-16) 0 var(--space-12);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.page-hero .container { position: relative; }

.page-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(212,175,55,0.15);
  border: 1px solid rgba(212,175,55,0.3);
  color: var(--color-gold-light);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.page-hero-title {
  font-family: var(--font-sans);
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  font-weight: var(--weight-bold);
  color: var(--color-white);
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.page-hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-gray-300);
  line-height: var(--leading-relaxed);
  max-width: 560px;
}

/* ── 7. Cards ─────────────────────────────────────────────── */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-body {
  padding: var(--space-6);
}

.card-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-gray-100);
  background: var(--color-off-white);
}

.card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-gray-100);
  background: var(--color-off-white);
}

.card-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semi);
  color: var(--color-navy);
}

.card-subtitle {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  margin-top: var(--space-1);
}

/* Premium card variant */
.card-premium {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-gold);
}

.card-premium .card-header {
  background: linear-gradient(135deg, var(--color-navy), var(--color-navy-mid));
  color: var(--color-white);
}

.card-premium .card-title { color: var(--color-white); }
.card-premium .card-subtitle { color: var(--color-gold-light); }

/* Featured badge on card */
.card-badge {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  background: var(--color-gold-light);
  color: var(--color-navy);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
}

/* ── 8. Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  line-height: 1;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1.5px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
  letter-spacing: 0.02em;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary */
.btn-primary {
  background: var(--color-navy);
  color: var(--color-white);
  border-color: var(--color-navy);
}
.btn-primary:hover {
  background: var(--color-navy-light);
  border-color: var(--color-navy-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Gold / Accent */
.btn-gold {
  background: linear-gradient(135deg, var(--color-gold-light), var(--color-gold));
  color: var(--color-navy);
  border-color: var(--color-gold);
  font-weight: var(--weight-bold);
}
.btn-gold:hover {
  box-shadow: var(--shadow-gold);
  transform: translateY(-1px);
  filter: brightness(1.05);
}

/* Outline */
.btn-outline {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}
.btn-outline:hover {
  background: var(--color-navy);
  color: var(--color-white);
}

/* Outline on dark backgrounds */
.btn-outline-light {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.4);
}
.btn-outline-light:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--color-charcoal);
  border-color: transparent;
}
.btn-ghost:hover {
  background: var(--color-gray-100);
  color: var(--color-navy);
}

/* Sizes */
.btn-sm {
  font-size: var(--text-xs);
  padding: 0.4rem 0.85rem;
}

.btn-lg {
  font-size: var(--text-base);
  padding: 0.85rem 1.75rem;
}

.btn-xl {
  font-size: var(--text-lg);
  padding: 1rem 2rem;
  border-radius: var(--radius-lg);
}

.btn-block { width: 100%; }

/* Icon button */
.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* ── 9. Form Elements ─────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  color: var(--color-charcoal);
  letter-spacing: 0.01em;
}

.form-label .required {
  color: var(--color-error);
  margin-left: 2px;
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-gray-500);
  margin-top: -var(--space-1);
}

.form-control {
  width: 100%;
  padding: 0.625rem var(--space-4);
  font-size: var(--text-base);
  color: var(--color-charcoal);
  background: var(--color-white);
  border: 1.5px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
  line-height: 1.5;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-navy);
  box-shadow: 0 0 0 3px rgba(13,27,42,0.08);
}

.form-control::placeholder {
  color: var(--color-gray-400);
}

.form-control.is-error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(184,32,32,0.08);
}

.form-control.is-success {
  border-color: var(--color-success);
}

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7d8f' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 40px;
}

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

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  padding: var(--space-2) 0;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  flex-shrink: 0;
  background: var(--color-white);
  transition: all var(--transition-fast);
  position: relative;
}

.form-check input[type="radio"] {
  border-radius: 50%;
}

.form-check input[type="checkbox"]:checked {
  background: var(--color-navy);
  border-color: var(--color-navy);
}

.form-check input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 6px;
  height: 10px;
  border: 2px solid white;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

.form-check input[type="radio"]:checked {
  background: var(--color-navy);
  border-color: var(--color-navy);
  box-shadow: inset 0 0 0 3px white;
}

.form-check-label {
  font-size: var(--text-sm);
  color: var(--color-charcoal);
  user-select: none;
}

/* Filter chips */
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-gray-300);
  background: var(--color-white);
  font-size: var(--text-sm);
  color: var(--color-gray-600);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.chip:hover {
  border-color: var(--color-navy);
  color: var(--color-navy);
}

.chip.active {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-white);
}

/* Form grid */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

/* ── 10. Modal ────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(13,27,42,0.65);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px) scale(0.97);
  transition: transform var(--transition-base);
}

.modal-overlay.is-open .modal {
  transform: translateY(0) scale(1);
}

.modal-lg { max-width: 720px; }
.modal-sm { max-width: 400px; }

.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-gray-100);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
}

.modal-title {
  font-family: var(--font-sans);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-navy);
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--color-gray-100);
  color: var(--color-gray-500);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition-fast);
  font-size: 18px;
  line-height: 1;
}

.modal-close:hover {
  background: var(--color-gray-200);
  color: var(--color-charcoal);
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* ── 11. Progress Bar ─────────────────────────────────────── */
.progress-container {
  width: 100%;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-gray-600);
}

.progress-track {
  width: 100%;
  height: 6px;
  background: var(--color-gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-navy), var(--color-navy-light));
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress-fill.gold {
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
}

/* Step progress */
.step-progress {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: var(--space-8);
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  position: relative;
}

.step-item:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 16px;
  left: 50%;
  width: 100%;
  height: 2px;
  background: var(--color-gray-200);
  z-index: 0;
}

.step-item.completed:not(:last-child)::after {
  background: var(--color-navy);
}

.step-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-gray-200);
  border: 2px solid var(--color-gray-300);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  color: var(--color-gray-500);
  position: relative;
  z-index: 1;
  transition: all var(--transition-base);
}

.step-item.active .step-dot {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-white);
  box-shadow: 0 0 0 4px rgba(13,27,42,0.12);
}

.step-item.completed .step-dot {
  background: var(--color-success);
  border-color: var(--color-success);
  color: var(--color-white);
}

.step-label {
  font-size: var(--text-xs);
  color: var(--color-gray-500);
  margin-top: var(--space-2);
  text-align: center;
  font-weight: var(--weight-medium);
}

.step-item.active .step-label { color: var(--color-navy); font-weight: var(--weight-semi); }
.step-item.completed .step-label { color: var(--color-success); }

/* ── 12. Alert States ─────────────────────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.alert-icon {
  flex-shrink: 0;
  font-size: 1.1em;
  margin-top: 1px;
}

.alert-success {
  background: var(--color-success-bg);
  border-color: rgba(26,127,90,0.25);
  color: var(--color-success);
}

.alert-warning {
  background: var(--color-warning-bg);
  border-color: rgba(184,124,12,0.25);
  color: var(--color-warning);
}

.alert-error {
  background: var(--color-error-bg);
  border-color: rgba(184,32,32,0.25);
  color: var(--color-error);
}

.alert-info {
  background: var(--color-info-bg);
  border-color: rgba(26,79,127,0.25);
  color: var(--color-info);
}

/* ── 13. Empty State ──────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-16) var(--space-8);
  color: var(--color-gray-400);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.empty-state-title {
  font-size: var(--text-xl);
  font-weight: var(--weight-semi);
  color: var(--color-gray-500);
  margin-bottom: var(--space-2);
}

.empty-state-text {
  font-size: var(--text-sm);
  color: var(--color-gray-400);
  max-width: 320px;
}

/* ── 14. Success State ────────────────────────────────────── */
.success-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-10) var(--space-8);
}

.success-icon {
  width: 72px;
  height: 72px;
  background: var(--color-success-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: var(--space-5);
  border: 2px solid rgba(26,127,90,0.2);
}

.success-title {
  font-family: var(--font-sans);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.success-text {
  font-size: var(--text-base);
  color: var(--color-gray-500);
  max-width: 400px;
  line-height: var(--leading-relaxed);
}

/* ── 15. Loading Skeleton ─────────────────────────────────── */
@keyframes shimmer {
  0%   { background-position: -800px 0; }
  100% { background-position: 800px 0; }
}

.skeleton {
  background: linear-gradient(90deg,
    var(--color-gray-200) 25%,
    var(--color-gray-100) 50%,
    var(--color-gray-200) 75%
  );
  background-size: 800px 100%;
  animation: shimmer 1.5s infinite linear;
  border-radius: var(--radius-sm);
}

.skeleton-text {
  height: 1em;
  margin-bottom: 0.5em;
  border-radius: var(--radius-sm);
}

.skeleton-title {
  height: 1.5em;
  width: 60%;
  margin-bottom: var(--space-3);
}

.skeleton-card {
  height: 200px;
  border-radius: var(--radius-lg);
}

/* ── 16. Badges & Tags ────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.badge-navy { background: var(--color-navy); color: var(--color-white); }
.badge-gold { background: var(--color-gold-pale); color: var(--color-gold); border: 1px solid var(--color-gold); }
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-error { background: var(--color-error-bg); color: var(--color-error); }
.badge-gray { background: var(--color-gray-100); color: var(--color-gray-600); }

/* Amenity tags */
.amenity-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  background: var(--color-gray-100);
  color: var(--color-gray-600);
  border: 1px solid var(--color-gray-200);
}

/* ── 17. Dividers ─────────────────────────────────────────── */
.divider {
  width: 100%;
  height: 1px;
  background: var(--color-gray-200);
  margin: var(--space-6) 0;
}

.divider-gold {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold-light), transparent);
}

/* ── 18. Stat / KPI Cards ─────────────────────────────────── */
.stat-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-200);
  padding: var(--space-5) var(--space-6);
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gray-500);
  margin-bottom: var(--space-2);
}

.stat-value {
  font-family: var(--font-sans);
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--color-navy);
  line-height: 1;
}

.stat-delta {
  font-size: var(--text-sm);
  margin-top: var(--space-1);
}

.stat-delta.positive { color: var(--color-success); }
.stat-delta.negative { color: var(--color-error); }

/* ── 19. Tooltip ──────────────────────────────────────────── */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-navy);
  color: var(--color-white);
  font-size: var(--text-xs);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: 10;
}

[data-tooltip]:hover::after { opacity: 1; }

/* ── 20. Responsive Utilities ─────────────────────────────── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .container { padding: 0 var(--space-4); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .page-hero { padding: var(--space-10) 0 var(--space-8); }
  .section { padding: var(--space-10) 0; }
  .site-nav { display: none; }
  .modal { max-width: 100%; margin: 0; border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
  .modal-overlay { align-items: flex-end; padding: 0; }
}

@media (max-width: 480px) {
  .btn-xl { font-size: var(--text-base); padding: 0.85rem 1.5rem; }
  .heading-display { font-size: var(--text-3xl); }
}

/* ── 21. Print Styles ─────────────────────────────────────── */
@media print {
  .site-header, .btn, .modal-overlay, .no-print { display: none !important; }
  body { background: white; color: black; }
  .card { box-shadow: none; border: 1px solid #ccc; }
  .page-hero { background: white; color: black; padding: 1rem 0; }
  .page-hero-title { color: black; }
  .page-hero-subtitle { color: #555; }
}

/* ── 22. Utility Classes ──────────────────────────────────── */
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.font-bold { font-weight: var(--weight-bold); }
.font-semi { font-weight: var(--weight-semi); }
.hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}
.relative { position: relative; }
.w-full { width: 100%; }
.rounded { border-radius: var(--radius-md); }
.shadow { box-shadow: var(--shadow-md); }