/* ============================================================
   THE ANCIENT SKIES — Design System
   theancientskies.com
   ============================================================ */

/* ------------------------------------------------------------
   1. CSS Variables
   ------------------------------------------------------------ */
:root {
  color-scheme: dark;

  /* Colours */
  --bg:            #0d0d1a;
  --bg-elevated:   #111122;
  --bg-card:       #111122;
  --border:        #2a2a40;
  --border-light:  #1e1e30;
  --gold:          #c9a84c;
  --gold-dark:     #a88a3a;
  --gold-subtle:   rgba(201, 168, 76, 0.12);
  --text-primary:  #f0f0f8;
  --text-secondary:#9090b0;
  --text-muted:    #8080a0;
  --text-inverse:  #0d0d1a;

  /* Typography */
  --font-serif: Georgia, 'Times New Roman', serif;
  --font-sans:  -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono:  'SF Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  40px;
  --space-2xl: 64px;
  --space-3xl: 96px;

  /* Layout */
  --max-width:     1100px;
  --article-width: 720px;
  --nav-height:    64px;

  /* Transitions */
  --transition: 0.2s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--gold);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--text-primary);
}

/* ------------------------------------------------------------
   3. Typography
   ------------------------------------------------------------ */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: normal;
  line-height: 1.25;
  color: var(--text-primary);
}

h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
h4 { font-size: 1.1rem; }

p {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
  line-height: 1.8;
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: var(--space-md);
}

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

.article-container {
  max-width: var(--article-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-2xl) 0;
}

/* ------------------------------------------------------------
   5. Navigation
   ------------------------------------------------------------ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(13, 13, 26, 0.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--gold);
  letter-spacing: 0.04em;
  text-decoration: none;
}

.nav-logo:hover {
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav-links a {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--gold);
}

.nav-cta {
  background: var(--gold);
  color: var(--text-inverse) !important;
  padding: var(--space-sm) var(--space-md);
  border-radius: 3px;
  font-size: 0.7rem !important;
  font-weight: 700 !important;
}

.nav-cta:hover {
  background: var(--text-primary);
  color: var(--text-inverse) !important;
}

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1.4rem;
  padding: var(--space-sm);
}

/* ------------------------------------------------------------
   6. Buttons
   ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 24px;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 3px;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.btn-primary {
  background: var(--gold);
  color: var(--text-inverse);
}

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

.btn-secondary {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--gold);
}

.btn-secondary:hover {
  background: var(--gold);
  color: var(--text-inverse);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* ------------------------------------------------------------
   7. Hero Section
   ------------------------------------------------------------ */
.hero {
  padding: var(--space-3xl) 0 var(--space-2xl);
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.hero h1 {
  max-width: 660px;
  margin-bottom: var(--space-lg);
}

.hero-subhead {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}

.hero-ctas {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* ------------------------------------------------------------
   8. Article Cards (Homepage + History Index)
   ------------------------------------------------------------ */
.cards-section {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--border);
}

.cards-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.cards-header h2 {
  font-size: 1.1rem;
}

.cards-header a {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.cards-header a:hover {
  color: var(--gold);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
}

.card {
  background: var(--bg-card);
  padding: var(--space-xl) var(--space-lg);
  text-decoration: none;
  display: block;
  transition: background var(--transition);
}

.card:hover {
  background: #141428;
}

.card:hover .card-title {
  color: var(--gold);
}

.card-era {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--space-sm);
  display: block;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: var(--space-sm);
  transition: color var(--transition);
}

.card-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ------------------------------------------------------------
   9. Why Different Strip
   ------------------------------------------------------------ */
.why-strip {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

.why-strip-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-2xl);
  align-items: center;
}

.why-strip h2 {
  font-size: 1.4rem;
}

.why-strip p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.why-strip p:last-child {
  margin-bottom: 0;
}

/* ------------------------------------------------------------
   10. Calculator Entry (Homepage)
   ------------------------------------------------------------ */
.calculator-entry {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--border);
}

.calculator-entry-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.calculator-entry-text h2 {
  margin-bottom: var(--space-md);
}

.calculator-entry-text p {
  margin-bottom: var(--space-lg);
}

.calculator-form {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: var(--space-xl);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 10px var(--space-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem; /* 16px minimum prevents iOS auto-zoom on focus */
  min-height: 44px;
  transition: border-color var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

.form-group select {
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="10" height="6" viewBox="0 0 10 6"><path d="M1 1l4 4 4-4" fill="none" stroke="%238080a0" stroke-width="1.5"/></svg>');
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.time-selects {
  display: flex;
  gap: 6px;
}

.time-selects select {
  flex: 1;
  min-width: 0;
  padding-left: 6px;
  padding-right: 16px;
  background-position: right 5px center;
  /* Smaller than the 16px used elsewhere so "Minute" and "AM/PM" fit in a
     third-width box. Safe here: iOS only auto-zooms on focus for text inputs,
     not for <select> (which opens the native picker), so no zoom side effect. */
  font-size: 0.875rem;
}

/* The AM/PM face ("AM/PM") is the widest of the three, so give it a touch more room */
.time-selects select#birthtimeAmPm {
  flex: 1.15;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--gold);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.form-row {
  display: grid;
  /* auto-fit collapses to a single column whenever the container is too
     narrow for two ~190px tracks, so the time dropdowns always get full
     width on a phone even if a viewport media query doesn't apply */
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: var(--space-md);
}

.calculator-form .btn {
  width: 100%;
  margin-top: var(--space-sm);
  text-align: center;
}

/* ------------------------------------------------------------
   11. Article Page Layout
   ------------------------------------------------------------ */
.article-header {
  padding: var(--space-2xl) 0 var(--space-xl);
  border-bottom: 1px solid var(--border);
}

.article-era {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: var(--space-md);
}

.article-header h1 {
  max-width: 640px;
  margin-bottom: var(--space-lg);
}

.article-meta {
  display: flex;
  gap: var(--space-lg);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.article-body {
  padding: var(--space-2xl) 0;
}

.article-body h2 {
  font-size: 1.35rem;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.article-body h3 {
  font-size: 1.1rem;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.article-body p {
  font-size: 1.05rem;
  line-height: 1.85;
  margin-bottom: var(--space-lg);
  color: var(--text-secondary);
}

.article-body p:first-of-type {
  font-size: 1.12rem;
  color: #b0b0c8;
}

.article-body strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ------------------------------------------------------------
   12. Calculator Pull (end of article)
   ------------------------------------------------------------ */
.calculator-pull {
  margin-top: var(--space-2xl);
  padding: var(--space-xl);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  border-radius: 0 6px 6px 0;
}

.calculator-pull p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.calculator-pull p:last-of-type {
  margin-bottom: 0;
}

/* ------------------------------------------------------------
   13. Ad Placement Zones
   ------------------------------------------------------------ */
.ad-zone {
  background: var(--bg-elevated);
  border: 1px dashed var(--border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  min-height: 90px;
  margin: var(--space-xl) 0;
}

.ad-zone-leaderboard { min-height: 90px; }
.ad-zone-rectangle   { min-height: 250px; max-width: 300px; }
.ad-zone-sidebar     { min-height: 600px; width: 160px; }

/* ------------------------------------------------------------
   14. Calculator Flow Pages
   ------------------------------------------------------------ */
.calculator-page {
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  flex-direction: column;
}

.calculator-progress {
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  padding: var(--space-md) 0;
}

.calculator-progress-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.progress-step {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.progress-step.active {
  color: var(--gold);
}

.progress-step.complete {
  color: var(--text-muted);
}

.progress-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border);
}

.progress-step.active  .progress-dot { background: var(--gold); }
.progress-step.complete .progress-dot { background: var(--text-muted); }

.progress-line {
  flex: 1;
  height: 1px;
  background: var(--border);
  max-width: 32px;
}

.calculator-content {
  flex: 1;
  padding: var(--space-2xl) 0;
}

/* Loading screen */
.calculating-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
}

.calculating-spinner {
  width: 48px;
  height: 48px;
  border: 2px solid var(--border);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 1.2s linear infinite;
  margin-bottom: var(--space-xl);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.calculating-screen h2 {
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.calculating-screen p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Reading results */
.reading-header {
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-xl);
}

.reading-planet {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: var(--space-sm);
}

.reading-placement {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: var(--space-sm);
  margin-bottom: 0;
}

.reading-body p {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.reading-next {
  display: flex;
  justify-content: flex-end;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
  margin-top: var(--space-xl);
}

/* ------------------------------------------------------------
   15. History Index Page
   ------------------------------------------------------------ */
.history-page-header {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--border);
}

.history-page-header h1 {
  margin-bottom: var(--space-md);
}

.history-page-header p {
  max-width: 560px;
  font-size: 1.05rem;
}

.history-grid {
  padding: var(--space-2xl) 0;
}

.history-era {
  margin-bottom: var(--space-2xl);
}

.history-era-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.history-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
}

/* ------------------------------------------------------------
   16. Footer
   ------------------------------------------------------------ */
.footer {
  border-top: 1px solid var(--border);
  padding: var(--space-2xl) 0;
  background: var(--bg-elevated);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-2xl);
}

.footer-brand .nav-logo {
  display: block;
  margin-bottom: var(--space-md);
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 280px;
  line-height: 1.6;
  margin: 0;
}

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: var(--space-sm);
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-col a:hover {
  color: var(--gold);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: var(--space-xl) auto 0;
  padding: var(--space-lg) var(--space-lg) 0;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ------------------------------------------------------------
   17. Responsive
   ------------------------------------------------------------ */
@media (max-width: 900px) {
  .cards-grid {
    grid-template-columns: 1fr 1fr;
  }

  .why-strip-inner {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .calculator-entry-inner {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .history-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  :root {
    --space-2xl: 48px;
    --space-3xl: 64px;
  }

  /* Progress bar: dots only, label on the active step — prevents horizontal overflow */
  .calculator-progress-inner {
    gap: 6px;
  }

  .progress-step span {
    display: none;
  }

  .progress-step.active span {
    display: inline;
  }

  .progress-line {
    max-width: 16px;
  }

  .nav-links {
    display: none;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    padding: var(--space-lg);
    gap: var(--space-lg);
    z-index: 200;
  }

  .nav-mobile-toggle {
    display: block;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  /* Reclaim width on phones: the calculator form sits inside the page
     container, so two layers of horizontal padding were squeezing the
     three time dropdowns. Trim both on small screens. */
  .container {
    padding: 0 var(--space-md);
  }

  .calculator-form {
    padding: var(--space-md);
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .hero-ctas {
    flex-direction: column;
  }

  .hero-ctas .btn {
    text-align: center;
  }
}

/* ------------------------------------------------------------
   Decorative Banners & Figures (celestial art)
   ------------------------------------------------------------ */
.tas-banner {
  max-width: var(--max-width);
  margin: var(--space-lg) auto 0;
  padding: 0 var(--space-lg);
}

.tas-banner img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.article-banner {
  margin-top: var(--space-xl);
}

.tas-figure {
  max-width: 380px;
  margin: var(--space-xl) auto;
  padding: 0 var(--space-lg);
}

.tas-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.tas-figure figcaption {
  margin-top: var(--space-sm);
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
}

.hero-banner img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
}

/* On narrow screens the wide band shrinks the mandala to an illegible speck,
   so crop the empty sides and show a taller, centred slice instead. */
@media (max-width: 640px) {
  .hero-banner img {
    height: 280px;
    object-fit: cover;
    object-position: center;
  }

  .tas-banner img {
    height: 220px;
    object-fit: cover;
    object-position: center;
  }
}