/* Redmoon Business Date Calculators — global layout & components */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); text-decoration: underline; }
:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: 3px;
}
::selection { background: var(--mars); color: #fff; }

/* RTL support */
[dir="rtl"] { text-align: right; }
[dir="rtl"] .nav__links { flex-direction: row-reverse; }
[dir="rtl"] .icon-left { margin-left: var(--space-2); margin-right: 0; }

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.15;
  margin: 0 0 var(--space-4);
  color: var(--text);
}
h1 { font-size: clamp(2rem, 4vw, 3.25rem); text-transform: uppercase; }
h2 { font-size: clamp(1.5rem, 2.5vw, 2.25rem); text-transform: uppercase; }
h3 { font-size: 1.25rem; }
.display {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.highlight { color: var(--star-gazer); }
.muted { color: var(--text-muted); }
p { margin: 0 0 var(--space-4); }

/* Container */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}
.container--narrow { max-width: 820px; }

/* Header */
.site-header {
  background: var(--header-bg);
  color: var(--header-text);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  max-width: 1180px;
  margin: 0 auto;
  gap: var(--space-4);
}
.brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--header-text);
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.brand-link:hover { text-decoration: none; color: var(--header-text); }
.brand-link__mark {
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--mars); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-heading); font-weight: 700; font-size: 1.1rem;
}
.brand-link__name span { color: var(--mars); }

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  padding: 0;
  margin: 0;
}
.nav__links a {
  color: var(--header-text);
  font-size: 0.95rem;
  font-weight: 500;
}
.nav__links a:hover { color: var(--mars); text-decoration: none; }

.icon-btn {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--header-text);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: inherit;
  font-size: 0.85rem;
  transition: background .15s var(--ease), border-color .15s var(--ease);
}
.icon-btn:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.3);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s var(--ease), transform .05s var(--ease), box-shadow .15s var(--ease);
  user-select: none;
}
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: var(--accent);
  color: var(--accent-text);
}
.btn--primary:hover { background: var(--accent-hover); color: var(--accent-text); text-decoration: none; box-shadow: var(--shadow-md); }
.btn--secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn--secondary:hover { background: var(--surface-hover); text-decoration: none; color: var(--text); }
.btn--ghost {
  background: transparent;
  color: var(--text);
}
.btn--ghost:hover { background: var(--surface-hover); text-decoration: none; }
.btn--lg { padding: var(--space-4) var(--space-6); font-size: 1rem; }
.btn--block { width: 100%; }

/* Inputs */
.field {
  display: block;
  margin-bottom: var(--space-4);
}
.field__label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: var(--space-2);
  color: var(--text);
}
.field__hint {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}
.input, .select, .textarea {
  width: 100%;
  padding: var(--space-3) var(--space-3);
  font: inherit;
  font-size: 0.95rem;
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--mars);
  box-shadow: 0 0 0 3px var(--focus-ring);
}
.textarea { min-height: 110px; resize: vertical; }
.checkbox-row, .radio-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  cursor: pointer;
}
.checkbox-row input, .radio-row input {
  accent-color: var(--mars);
  width: 18px; height: 18px;
}
.field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}
.card--hover {
  transition: transform .15s var(--ease), box-shadow .15s var(--ease), border-color .15s var(--ease);
}
.card--hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

/* Hero */
.hero {
  background: var(--galaxy);
  color: var(--nebula);
  padding: var(--space-8) 0;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at top right, rgba(244,44,44,0.18), transparent 50%),
    radial-gradient(ellipse at bottom left, rgba(244,201,64,0.10), transparent 50%);
  pointer-events: none;
}
.hero__inner { position: relative; }
.hero h1 {
  color: var(--nebula);
  font-family: var(--font-heading);
  font-weight: 700;
}
.hero p.lead {
  color: rgba(255,255,255,0.85);
  font-size: 1.15rem;
  max-width: 640px;
}
.hero__cta { display: flex; gap: var(--space-3); flex-wrap: wrap; }

/* Catalog grid */
.section { padding: var(--space-7) 0; }
.section__title { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; }
.catalog {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-5);
}
.calc-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text);
  transition: transform .15s var(--ease), box-shadow .15s var(--ease), border-color .15s var(--ease);
}
.calc-card:hover {
  transform: translateY(-2px);
  border-color: var(--mars);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  color: var(--text);
}
.calc-card__cat {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  font-weight: 600;
}
.calc-card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  margin: 0;
  text-transform: uppercase;
}
.calc-card__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}
.calc-card__icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: rgba(var(--mars-rgb), 0.12);
  color: var(--mars);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
}

/* Search */
.search-bar {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  max-width: 520px;
}
.search-bar input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 1rem;
  padding: var(--space-2);
}
.search-bar input:focus { outline: none; }

/* Result panel */
.result {
  background: linear-gradient(135deg, rgba(var(--mars-rgb), 0.08), rgba(var(--star-gazer-rgb), 0.06));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin: var(--space-5) 0;
}
.result__value {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  color: var(--text);
  text-transform: uppercase;
  margin: 0 0 var(--space-3);
}
.result__detail { color: var(--text-muted); font-size: 0.95rem; }
.result__breakdown {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.stat {
  background: var(--bg-raised);
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.stat__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  font-weight: 600;
}
.stat__value {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--text);
  margin-top: 4px;
}

/* Footer */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: var(--space-7) 0 var(--space-5);
  margin-top: var(--space-8);
}
.site-footer a { color: var(--nebula); opacity: 0.85; }
.site-footer a:hover { opacity: 1; color: var(--mars); text-decoration: none; }
.site-footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}
.site-footer__col h4 {
  color: var(--nebula);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}
.site-footer__col ul { list-style: none; padding: 0; margin: 0; }
.site-footer__col li { margin-bottom: var(--space-2); font-size: 0.9rem; }
.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-4);
  display: flex; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
}

/* Ads */
.ad-slot {
  background: var(--bg-alt);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  text-align: center;
  padding: var(--space-4);
  margin: var(--space-5) 0;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: var(--text-faint);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.ad-slot[data-slot="leaderboard"] { min-height: 90px; }
.ad-slot[data-slot="rectangle"] { min-height: 250px; }
.ad-slot[data-slot="skyscraper"] { min-height: 600px; }
.ad-slot__label { display: block; opacity: 0.5; }

/* Layout: calculator page */
.calc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-5);
  align-items: start;
}
@media (min-width: 1100px) {
  .calc-layout { grid-template-columns: minmax(0, 1fr) 300px; }
}
.calc-side .ad-slot { margin: 0 0 var(--space-4); }

.breakdown-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-4);
  font-size: 0.9rem;
}
.breakdown-table th, .breakdown-table td {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--border);
}
.breakdown-table th {
  font-family: var(--font-heading);
  text-transform: uppercase;
  font-size: 0.78rem;
  color: var(--text-muted);
}
[dir="rtl"] .breakdown-table th, [dir="rtl"] .breakdown-table td { text-align: right; }

/* Dialog */
.dialog-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.55);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-4);
  animation: fade .15s var(--ease);
}
.dialog-backdrop.open { display: flex; }
.dialog {
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  animation: pop .2s var(--ease);
}
.dialog__head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: var(--space-4);
}
.dialog__title { margin: 0; font-size: 1.4rem; }
.dialog__close {
  background: transparent;
  border: 0;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px 8px;
  line-height: 1;
}
.dialog__close:hover { color: var(--text); }
.dialog__actions {
  display: flex; gap: var(--space-3); justify-content: flex-end;
  margin-top: var(--space-5);
}
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop { from { transform: scale(.96); opacity: 0; } to { transform: scale(1); opacity: 1; } }

/* Toast */
.toast {
  position: fixed;
  bottom: var(--space-5);
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--galaxy);
  color: var(--nebula);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s var(--ease), transform .2s var(--ease);
  z-index: 1100;
  font-size: 0.9rem;
  max-width: 90vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }

/* Floating feedback button */
.fab {
  position: fixed;
  bottom: var(--space-5);
  right: var(--space-5);
  background: var(--mars);
  color: #fff;
  border: 0;
  border-radius: 28px;
  padding: var(--space-3) var(--space-5);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.fab:hover { background: var(--accent-hover); }
[dir="rtl"] .fab { right: auto; left: var(--space-5); }

/* Language menu */
.lang-menu {
  position: relative;
}
.lang-menu__panel {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  padding: var(--space-2);
  display: none;
  z-index: 200;
  max-height: 380px;
  overflow-y: auto;
}
.lang-menu.open .lang-menu__panel { display: block; }
.lang-menu__item {
  display: block;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font: inherit;
  color: var(--text);
  font-size: 0.9rem;
}
.lang-menu__item:hover { background: var(--surface-hover); }
.lang-menu__item[aria-current="true"] { background: rgba(var(--mars-rgb), 0.12); color: var(--mars); }
[dir="rtl"] .lang-menu__panel { right: auto; left: 0; text-align: right; }
[dir="rtl"] .lang-menu__item { text-align: right; }

/* Utilities */
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }
.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;
}
.hidden { display: none !important; }

/* Categories chips */
.chips { display: flex; flex-wrap: wrap; gap: var(--space-2); margin: var(--space-4) 0; }
.chip {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: none;
  transition: all .15s var(--ease);
}
.chip:hover { border-color: var(--mars); color: var(--mars); text-decoration: none; }
.chip--active { background: var(--mars); color: #fff; border-color: var(--mars); }
.chip--active:hover { color: #fff; }

/* Calendar preview */
.cal-preview {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-top: var(--space-3);
}
.cal-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  border-radius: 6px;
  background: var(--bg-raised);
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.cal-day--bd { background: rgba(var(--mars-rgb), 0.12); color: var(--text); font-weight: 600; }
.cal-day--weekend { color: var(--text-faint); }
.cal-day--holiday { background: rgba(var(--star-gazer-rgb), 0.28); color: var(--text); }
.cal-day--start { outline: 2px solid var(--mars); }
.cal-day--end { outline: 2px solid var(--star-gazer); }

/* Print */
@media print {
  .site-header, .site-footer, .fab, .ad-slot, .calc-side, .nav { display: none !important; }
  .container { max-width: none; }
  .card, .result { box-shadow: none; border-color: #ccc; }
}

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