/* ==========================================================================
   ERHEAP — Core Stylesheet
   Design system: tokens, base, layout, components
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  /* Color — petrol teal (trust, health, depth) + sage green (warmth, growth),
     pulled from the ERHEAP logo. Set against a soft cool paper. */
  --ink: #0E1F26;
  --ink-soft: #233540;
  --paper: #F4F5F6;
  --paper-raised: #FFFFFF;
  --teal-900: #15303B;
  --teal-700: #2D5D6D;
  --teal-600: #3F7283;
  --teal-500: #5997AB;
  --teal-100: #E3EEF2;
  --coral-600: #6B8E73;
  --coral-500: #88A691;
  --gold-500: #B8A07A;
  --sand-100: #E8ECEE;
  --line: rgba(14, 31, 38, 0.10);
  --line-strong: rgba(14, 31, 38, 0.18);

  /* Glass surfaces */
  --glass-bg: rgba(255, 255, 255, 0.62);
  --glass-bg-strong: rgba(255, 255, 255, 0.78);
  --glass-border: rgba(255, 255, 255, 0.45);
  --glass-blur: 20px;

  /* Type */
  --font-display: "Fraunces", "Iowan Old Style", "Georgia", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Radius */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-squircle: 28px;
  --radius-pill: 999px;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(14, 31, 38, 0.06), 0 1px 1px rgba(14, 31, 38, 0.04);
  --shadow-md: 0 8px 24px rgba(14, 31, 38, 0.08), 0 2px 6px rgba(14, 31, 38, 0.05);
  --shadow-lg: 0 24px 60px rgba(14, 31, 38, 0.14), 0 6px 16px rgba(14, 31, 38, 0.06);

  /* Motion */
  --ease-spring: cubic-bezier(.22, 1, .36, 1);
  --dur-fast: 180ms;
  --dur-med: 420ms;

  /* Layout */
  --container: 1180px;
  --nav-h: 76px;
  --nav-h-mobile: 56px;
  --logo-h: 32px;
  --logo-h-mobile: 26px;

  color-scheme: light;
}

[data-theme="dark"] {
  color-scheme: dark;
  --ink: #F3F1EA;
  --ink-soft: #CFD9DC;
  --paper: #0B1517;
  --paper-raised: #10262C;
  --teal-100: rgba(45, 93, 109, 0.18);
  --line: rgba(243, 241, 234, 0.10);
  --line-strong: rgba(243, 241, 234, 0.18);
  --glass-bg: rgba(16, 38, 44, 0.60);
  --glass-bg-strong: rgba(16, 38, 44, 0.78);
  --glass-border: rgba(255, 255, 255, 0.08);
}

@supports not (backdrop-filter: blur(1px)) {
  :root {
    --glass-bg: rgba(255, 255, 255, 0.92);
    --glass-bg-strong: rgba(255, 255, 255, 0.96);
  }
  [data-theme="dark"] {
    --glass-bg: rgba(16, 38, 44, 0.94);
    --glass-bg-strong: rgba(16, 38, 44, 0.97);
  }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background var(--dur-med) var(--ease-spring), color var(--dur-med) var(--ease-spring);
}

img { max-width: 100%; display: block; }
a { color: inherit; }
button { font: inherit; }

h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

@media (min-width: 768px) {
  .container { padding-inline: var(--space-6); }
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  top: -48px;
  left: var(--space-4);
  background: var(--teal-900);
  color: #fff;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top var(--dur-fast) var(--ease-spring);
}
.skip-link:focus { top: var(--space-4); }

/* ---------- Focus states ---------- */
a:focus-visible, button:focus-visible, input:focus-visible,
textarea:focus-visible, select:focus-visible, [tabindex]:focus-visible {
  outline: 2.5px solid var(--teal-500);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ---------- Typography scale ---------- */
.eyebrow {
  font-size: 0.8125rem;
  color: var(--teal-600);
  font-weight: 600;
}
.display-1 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.4rem, 5vw + 1rem, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
}
.display-2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.9rem, 3vw + 1rem, 3rem);
  line-height: 1.1;
}
.heading-lg { font-size: clamp(1.5rem, 1.2vw + 1rem, 1.9rem); }
.heading-md { font-size: 1.25rem; }
.lede {
  font-size: clamp(1.05rem, 0.4vw + 1rem, 1.25rem);
  color: var(--ink-soft);
  max-width: 60ch;
  line-height: 1.6;
}
.body-text { color: var(--ink-soft); max-width: 68ch; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85em 1.5em;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--dur-med) var(--ease-spring),
              box-shadow var(--dur-med) var(--ease-spring),
              background var(--dur-fast) ease;
  will-change: transform;
}
.btn:active { transform: scale(0.96); }
@media (hover: hover) {
  .btn:hover { transform: translateY(-2px); }
}
.btn-primary {
  background: var(--teal-700);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--teal-600); box-shadow: var(--shadow-md); }
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-secondary:hover { background: var(--teal-100); }
.btn-support {
  background: var(--coral-600);
  color: #fff;
}
.btn-support:hover { background: var(--coral-500); box-shadow: var(--shadow-md); }
.btn-donate {
  background: var(--teal-900);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-donate:hover { background: var(--teal-700); box-shadow: var(--shadow-md); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.6; cursor: not-allowed; transform: none; }

/* ---------- Glass surface ---------- */
.glass {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
}

/* ---------- Navigation ---------- */
.site-nav {
  position: fixed;
  top: var(--space-4);
  left: 0;
  right: 0;
  z-index: 500;
  display: flex;
  justify-content: center;
}
.nav-inner {
  width: min(1100px, calc(100% - var(--space-8)));
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--space-5);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-md);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
}
.nav-brand .logo-img {
  height: var(--logo-h);
  width: auto;
  display: block;
}
.nav-brand .name { line-height: 1; }
.nav-brand .mark {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(155deg, var(--teal-600), var(--teal-900));
  display: grid;
  place-items: center;
  color: #fff;
  font-family: var(--font-display);
  font-size: 1rem;
}
.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-6);
}
.nav-links a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
  transition: color var(--dur-fast) ease, border-color var(--dur-fast) ease;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); border-color: var(--teal-500); }
.nav-actions { display: flex; align-items: center; gap: var(--space-3); }
.theme-toggle {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: transparent;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: transform var(--dur-med) var(--ease-spring), background var(--dur-fast) ease;
}
.theme-toggle:hover { background: var(--teal-100); }
.theme-toggle:active { transform: scale(0.9) rotate(20deg); }
.theme-toggle svg { width: 18px; height: 18px; }

.nav-toggle {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: transparent;
  display: grid;
  place-items: center;
  cursor: pointer;
}
.nav-toggle span, .nav-toggle::before, .nav-toggle::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  position: relative;
  transition: transform var(--dur-med) var(--ease-spring), opacity var(--dur-fast) ease;
}
.nav-toggle::before { transform: translateY(-5px); }
.nav-toggle::after { transform: translateY(3px); }
.nav-toggle[aria-expanded="true"] span { opacity: 0; }
.nav-toggle[aria-expanded="true"]::before { transform: translateY(1px) rotate(45deg); }
.nav-toggle[aria-expanded="true"]::after { transform: translateY(-1px) rotate(-45deg); }

@media (min-width: 980px) {
  .nav-links { display: flex; }
  .nav-toggle { display: none; }
}

/* Mobile drawer */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 490;
  display: none;
}
.mobile-menu.open { display: block; }
.mobile-menu-scrim {
  position: absolute; inset: 0;
  background: rgba(14, 31, 38, 0.4);
  opacity: 0;
  transition: opacity var(--dur-med) var(--ease-spring);
}
.mobile-menu.open .mobile-menu-scrim { opacity: 1; }
.mobile-menu-panel {
  position: absolute;
  top: calc(var(--nav-h) + var(--space-6));
  left: var(--space-4);
  right: var(--space-4);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
  transform: translateY(-16px) scale(0.98);
  opacity: 0;
  transition: transform var(--dur-med) var(--ease-spring), opacity var(--dur-med) var(--ease-spring);
}
.mobile-menu.open .mobile-menu-panel { transform: translateY(0) scale(1); opacity: 1; }
.mobile-menu-panel a {
  display: block;
  padding: var(--space-4) var(--space-2);
  font-size: 1.15rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  min-height: 44px;
}
.mobile-menu-panel .btn { margin-top: var(--space-5); }

/* ---------- Sections & layout helpers ---------- */
.section { padding-block: var(--space-9); }
.section-tight { padding-block: var(--space-7); }
.section-head { max-width: 640px; margin-bottom: var(--space-7); }
.section-head + .section-head { margin-top: var(--space-6); }

.hero {
  padding-top: calc(var(--nav-h) + var(--space-9));
  padding-bottom: var(--space-8);
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  gap: var(--space-8);
  align-items: center;
}
@media (min-width: 940px) {
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; }
}
.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-6);
}
.hero-visual {
  position: relative;
  aspect-ratio: 4/5;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; }
.hero-badge {
  position: absolute;
  bottom: var(--space-5);
  left: var(--space-5);
  right: var(--space-5);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

/* ---------- Stat strip ---------- */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}
@media (min-width: 760px) {
  .stat-strip { grid-template-columns: repeat(4, 1fr); }
}
.stat-card { text-align: left; }
.stat-value {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 2vw + 1rem, 2.6rem);
  color: var(--teal-700);
  line-height: 1;
}
[data-theme="dark"] .stat-value { color: var(--teal-500); }
.stat-label {
  margin-top: var(--space-2);
  font-size: 0.875rem;
  color: var(--ink-soft);
}
.stat-note {
  margin-top: var(--space-5);
  font-size: 0.8rem;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ---------- Grid ---------- */
.grid-2 { display: grid; gap: var(--space-6); }
.grid-3 { display: grid; gap: var(--space-6); }
.grid-4 { display: grid; gap: var(--space-5); }
@media (min-width: 700px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 980px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- Cards ---------- */
.card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-squircle);
  padding: var(--space-6);
  transition: transform var(--dur-med) var(--ease-spring), box-shadow var(--dur-med) var(--ease-spring);
}
@media (hover: hover) {
  .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
}
.card-glass {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-squircle);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur-med) var(--ease-spring), box-shadow var(--dur-med) var(--ease-spring);
}
@media (hover: hover) {
  .card-glass:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
}
.card-index {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--teal-600);
  margin-bottom: var(--space-3);
}
.card h3 { margin-bottom: var(--space-3); font-size: 1.15rem; }
.card ul { margin-top: var(--space-4); display: grid; gap: var(--space-2); }
.card ul li {
  font-size: 0.9rem;
  color: var(--ink-soft);
  padding-left: var(--space-5);
  position: relative;
}
.card ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.55em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--teal-500);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  background: var(--teal-100);
  color: var(--teal-700);
  font-size: 0.8125rem;
  font-weight: 600;
}
[data-theme="dark"] .badge { color: var(--teal-500); }

/* ---------- Cross-cutting / feature list ---------- */
.feature-card {
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 1px solid var(--line);
}
.feature-card .icon-tile {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--teal-100);
  display: grid;
  place-items: center;
  margin-bottom: var(--space-4);
}
[data-theme="dark"] .feature-card .icon-tile { background: rgba(44,134,119,0.2); }

/* ---------- CTA band ---------- */
.cta-band {
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  box-shadow: var(--shadow-md);
}
.cta-band .display-2 { max-width: 720px; margin-inline: auto; }
.cta-actions { display: flex; justify-content: center; gap: var(--space-4); flex-wrap: wrap; margin-top: var(--space-6); }

/* ---------- Skeletons ---------- */
.skeleton {
  background: linear-gradient(90deg, var(--line) 25%, var(--line-strong) 50%, var(--line) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-md);
}
@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
@media (prefers-reduced-motion: reduce) {
  .skeleton { animation: none; opacity: 0.6; }
}
.skeleton-card { height: 220px; border-radius: var(--radius-squircle); }
.skeleton-line { height: 14px; margin-top: var(--space-3); }
.skeleton-line.w-60 { width: 60%; }
.skeleton-line.w-80 { width: 80%; }

/* ---------- Forms ---------- */
.form-field { display: grid; gap: var(--space-2); margin-bottom: var(--space-5); }
.form-field label { font-weight: 600; font-size: 0.9rem; }
.form-field .hint { font-size: 0.8rem; color: var(--ink-soft); }
.form-field input,
.form-field select,
.form-field textarea {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  padding: 0.85em 1em;
  font: inherit;
  background: var(--paper-raised);
  color: var(--ink);
  transition: border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--teal-500);
  box-shadow: 0 0 0 4px var(--teal-100);
  outline: none;
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-field.error input,
.form-field.error textarea,
.form-field.error select { border-color: var(--coral-600); }
.form-error {
  font-size: 0.8125rem;
  color: var(--coral-600);
  display: none;
  align-items: center;
  gap: var(--space-2);
}
.form-field.error .form-error { display: flex; }
.checkbox-field { display: flex; align-items: flex-start; gap: var(--space-3); }
.checkbox-field input { width: 20px; height: 20px; margin-top: 2px; accent-color: var(--teal-600); }
.checkbox-field label { font-weight: 400; font-size: 0.9rem; }
.form-note {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  background: var(--teal-100);
  font-size: 0.875rem;
  color: var(--teal-900);
  margin-bottom: var(--space-6);
}
[data-theme="dark"] .form-note { color: var(--paper); }

/* ---------- Support options ---------- */
.support-option {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
  transition: transform var(--dur-med) var(--ease-spring), border-color var(--dur-fast) ease, background var(--dur-fast) ease;
}
.support-option:hover { transform: translateX(4px); border-color: var(--teal-500); background: var(--teal-100); }
.support-option .icon-tile { flex-shrink: 0; width: 48px; height: 48px; border-radius: 14px; background: var(--teal-100); display: grid; place-items: center; }
[data-theme="dark"] .support-option .icon-tile { background: rgba(44,134,119,0.22); }
.support-option strong { display: block; margin-bottom: 2px; }
.support-option span.desc { font-size: 0.875rem; color: var(--ink-soft); }

/* ---------- News ---------- */
.news-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-7);
}
.filter-pills { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.filter-pill {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  background: transparent;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--dur-fast) ease, color var(--dur-fast) ease, transform var(--dur-med) var(--ease-spring);
}
.filter-pill:active { transform: scale(0.94); }
.filter-pill[aria-pressed="true"] { background: var(--teal-700); color: #fff; border-color: var(--teal-700); }
.search-field { position: relative; }
.search-field input {
  width: 240px;
  max-width: 60vw;
  padding: 0.7em 1em 0.7em 2.4em;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
  color: var(--ink);
  font: inherit;
}
.search-field svg { position: absolute; left: 0.9em; top: 50%; transform: translateY(-50%); width: 16px; height: 16px; opacity: 0.55; }

.news-card { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line); background: var(--paper-raised); }
.news-card-media { aspect-ratio: 16/10; overflow: hidden; }
.news-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-med) var(--ease-spring); }
.news-card:hover .news-card-media img { transform: scale(1.04); }
.news-card-body { padding: var(--space-5); }
.news-meta { display: flex; gap: var(--space-3); font-size: 0.8rem; color: var(--ink-soft); margin-bottom: var(--space-3); }
.news-card h3 { font-size: 1.05rem; margin-bottom: var(--space-2); }
.news-card p { color: var(--ink-soft); font-size: 0.9rem; }
.empty-state { text-align: center; padding: var(--space-9) var(--space-5); color: var(--ink-soft); }
.empty-state .icon-tile { width: 56px; height: 56px; border-radius: 16px; background: var(--teal-100); display: grid; place-items: center; margin: 0 auto var(--space-5); }

/* ---------- Team ---------- */
.team-card { text-align: left; }
.team-photo {
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  background: var(--teal-100);
  display: grid;
  place-items: center;
  color: var(--teal-600);
  margin-bottom: var(--space-4);
  overflow: hidden;
}
[data-theme="dark"] .team-photo { background: rgba(44,134,119,0.2); }
.team-card strong { display: block; }
.team-card span { font-size: 0.875rem; color: var(--ink-soft); }

/* ---------- Region list ---------- */
.region-list { display: grid; gap: var(--space-3); }
.region-item {
  display: flex; align-items: center; gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
}
.region-item .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--teal-500); flex-shrink: 0; }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 900;
  display: none;
  align-items: flex-end;
  justify-content: center;
  background: rgba(14, 31, 38, 0.45);
  opacity: 0;
  transition: opacity var(--dur-med) var(--ease-spring);
  padding: var(--space-4);
}
@media (min-width: 700px) { .modal-overlay { align-items: center; } }
.modal-overlay.open { display: flex; opacity: 1; }
.modal {
  width: 100%;
  max-width: 420px;
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
  transform: translateY(24px) scale(0.97);
  opacity: 0;
  transition: transform var(--dur-med) var(--ease-spring), opacity var(--dur-med) var(--ease-spring);
}
.modal-overlay.open .modal { transform: translateY(0) scale(1); opacity: 1; }
.modal-actions { display: flex; gap: var(--space-3); margin-top: var(--space-6); }
.modal-close {
  position: absolute;
  top: var(--space-5); right: var(--space-5);
  background: none; border: none; cursor: pointer;
  width: 32px; height: 32px;
  display: grid; place-items: center;
  border-radius: 50%;
}
.modal-close:hover { background: var(--teal-100); }
.modal { position: relative; }

/* ---------- Toasts ---------- */
.toast-region {
  position: fixed;
  bottom: var(--space-5);
  left: 50%;
  transform: translateX(-50%);
  z-index: 950;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  width: min(420px, calc(100% - var(--space-6)));
}
.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  background: var(--paper-raised);
  border: 1px solid var(--line);
  transform: translateY(16px);
  opacity: 0;
  animation: toast-in var(--dur-med) var(--ease-spring) forwards;
}
.toast.success { border-left: 3px solid var(--teal-600); }
.toast.error { border-left: 3px solid var(--coral-600); }
@keyframes toast-in { to { transform: translateY(0); opacity: 1; } }
.toast strong { display: block; font-size: 0.9rem; }
.toast p { font-size: 0.825rem; color: var(--ink-soft); margin-top: 2px; }

/* ---------- Offline / install banners ---------- */
.system-banner {
  position: fixed;
  top: var(--space-4);
  left: 50%;
  transform: translateX(-50%) translateY(-140%);
  z-index: 800;
  width: min(480px, calc(100% - var(--space-6)));
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  transition: transform var(--dur-med) var(--ease-spring);
}
.system-banner.show { transform: translateX(-50%) translateY(0); }
.system-banner .banner-actions { display: flex; gap: var(--space-2); margin-left: auto; flex-shrink: 0; }
.system-banner button.text-btn {
  background: none; border: none; font-weight: 600; font-size: 0.85rem;
  color: var(--teal-700); cursor: pointer; padding: var(--space-2);
}

/* ---------- Accordion ---------- */
.accordion-item { border-bottom: 1px solid var(--line); }
.accordion-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  background: none;
  border: none;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
}
.accordion-trigger .plus { transition: transform var(--dur-med) var(--ease-spring); flex-shrink: 0; }
.accordion-trigger[aria-expanded="true"] .plus { transform: rotate(45deg); }
.accordion-panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--dur-med) var(--ease-spring);
}
.accordion-panel p { padding-bottom: var(--space-5); color: var(--ink-soft); }

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  display: grid;
  place-items: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity var(--dur-med) var(--ease-spring), transform var(--dur-med) var(--ease-spring);
  z-index: 300;
  box-shadow: var(--shadow-md);
}
.back-to-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--teal-900);
  color: rgba(246, 244, 239, 0.86);
  padding-block: var(--space-8) var(--space-6);
  margin-top: var(--space-9);
}
.site-footer a { text-decoration: none; color: inherit; opacity: 0.86; }
.site-footer a:hover { opacity: 1; text-decoration: underline; }
.footer-grid {
  display: grid;
  gap: var(--space-7);
  grid-template-columns: 1.3fr repeat(3, 1fr);
}
.footer-grid > div:first-child { grid-column: 1 / -1; }
@media (min-width: 760px) {
  .footer-grid { grid-template-columns: 1.3fr repeat(3, 1fr); }
  .footer-grid > div:first-child { grid-column: auto; max-width: 320px; }
}
.footer-grid h4 { font-size: 0.85rem; margin-bottom: var(--space-4); color: #fff; }
.footer-grid ul { display: grid; gap: var(--space-3); font-size: 0.9rem; }
.footer-brand { display: flex; align-items: center; gap: var(--space-3); font-weight: 700; margin-bottom: var(--space-4); color: #fff; }
.footer-brand .logo-img { height: 40px; width: auto; display: block; }
.footer-brand .mark {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(155deg, var(--teal-600), var(--teal-900));
  display: grid; place-items: center; color: #fff;
  font-family: var(--font-display); font-size: 1.1rem; flex-shrink: 0;
}
.footer-bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.14);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  font-size: 0.8125rem;
  opacity: 0.75;
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 640ms var(--ease-spring), transform 640ms var(--ease-spring);
}
.reveal.in-view { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Utility ---------- */
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-7 { margin-top: var(--space-7); }
.text-center { text-align: center; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.tone-strip { height: 6px; width: 100%; background: linear-gradient(90deg, var(--teal-600), var(--coral-500), var(--gold-500)); }
.page-hero {
  padding-top: calc(var(--nav-h) + var(--space-8));
  padding-bottom: var(--space-7);
}
.breadcrumb { font-size: 0.85rem; color: var(--ink-soft); margin-bottom: var(--space-4); }
.breadcrumb a { text-decoration: none; color: var(--teal-600); }
.map-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 16/9;
}
.map-frame iframe { width: 100%; height: 100%; border: 0; }
.image-placeholder {
  background: repeating-linear-gradient(135deg, var(--teal-100), var(--teal-100) 10px, var(--paper) 10px, var(--paper) 20px);
  display: grid;
  place-items: center;
  color: var(--teal-700);
  font-size: 0.75rem;
  text-align: center;
  padding: var(--space-4);
}
[data-theme="dark"] .image-placeholder { color: var(--teal-500); }