/* ============================================================
   The Compass at EO Chicago — Stylesheet
   ============================================================ */

/* Design tokens
   ------------------------------------------------------------ */
:root {
  /* Color */
  --color-bg:        #FAF8F4;   /* warm bone */
  --color-surface:   #F2EFE8;   /* soft cream */
  --color-text:      #1A1815;   /* deep ink */
  --color-muted:     #6B6862;   /* warm grey */
  --color-faint:     #9C9890;
  --color-accent:    #8B2E1F;   /* oxblood */
  --color-accent-hover: #6E2418;
  --color-border:    #D9D4C7;
  --color-rule:      #B9B2A2;

  /* Typography */
  --font-display: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman", serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --type-step-0: 1rem;       /* 16 */
  --type-step-1: 1.125rem;   /* 18 */
  --type-step-2: 1.5rem;     /* 24 */
  --type-step-3: 2rem;       /* 32 */
  --type-step-4: 2.75rem;    /* 44 */
  --type-step-5: 4rem;       /* 64 */
  --type-step-6: 5.5rem;     /* 88 */

  /* Space */
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs:  0.75rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;
  --space-3xl: 9rem;

  /* Layout */
  --measure: 36rem;          /* readable column ~65ch */
  --container: 72rem;
  --container-narrow: 56rem;

  /* Misc */
  --rule-thin: 1px;
  --radius: 2px;
  --shadow-soft: 0 1px 2px rgba(26, 24, 21, 0.04), 0 4px 12px rgba(26, 24, 21, 0.06);
  --transition: 180ms ease;
}

/* Base
   ------------------------------------------------------------ */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--type-step-1);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11";
}

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

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent-hover);
}

/* Typography
   ------------------------------------------------------------ */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 0;
  color: var(--color-text);
}

h1 {
  font-size: clamp(var(--type-step-4), 5vw + 1rem, var(--type-step-6));
  letter-spacing: -0.02em;
  line-height: 1.05;
}

h2 {
  font-size: clamp(var(--type-step-3), 3vw + 0.5rem, var(--type-step-4));
}

h3 {
  font-size: var(--type-step-2);
}

h4 {
  font-size: var(--type-step-1);
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: 0.875rem;
  color: var(--color-muted);
}

p {
  margin: 0 0 1em;
  max-width: var(--measure);
}

.lead {
  font-family: var(--font-display);
  font-size: var(--type-step-2);
  line-height: 1.4;
  color: var(--color-text);
  font-style: italic;
}

.eyebrow {
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--color-accent);
  margin: 0 0 var(--space-sm);
}

.muted {
  color: var(--color-muted);
}

::selection {
  background: var(--color-accent);
  color: var(--color-bg);
}

/* Layout
   ------------------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--space-2xl);
}

.section--compact {
  padding-block: var(--space-xl);
}

.section + .section {
  border-top: var(--rule-thin) solid var(--color-border);
}

@media (max-width: 720px) {
  .section {
    padding-block: var(--space-xl);
  }
}

/* Header & nav
   ------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(250, 248, 244, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: var(--rule-thin) solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: var(--space-sm);
}

.brand {
  font-family: var(--font-display);
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
}

.brand .brand__mark {
  width: 26px;
  height: 26px;
  flex: none;
}

.brand strong {
  font-weight: 400;
}

.brand .brand__sub {
  color: var(--color-muted);
  font-style: italic;
}

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

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

.nav__links a:hover {
  color: var(--color-accent);
}

.nav__links a[aria-current="page"] {
  color: var(--color-accent);
}

.nav__toggle {
  display: none;
  background: none;
  border: var(--rule-thin) solid var(--color-rule);
  color: var(--color-text);
  padding: 0.5rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  cursor: pointer;
  border-radius: var(--radius);
}

@media (max-width: 820px) {
  .nav__toggle {
    display: inline-flex;
  }
  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    inset-inline: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-bg);
    border-bottom: var(--rule-thin) solid var(--color-border);
    padding: var(--space-sm) var(--space-md);
    gap: var(--space-sm);
  }
  .nav__links--open {
    display: flex;
  }
}

/* Buttons
   ------------------------------------------------------------ */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  border: var(--rule-thin) solid currentColor;
  border-radius: var(--radius);
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition), color var(--transition);
}

.button:hover {
  background-color: var(--color-text);
  color: var(--color-bg);
}

.button--primary {
  background-color: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

.button--primary:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg);
}

.button--accent {
  background-color: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

.button--accent:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--color-bg);
}

.button--ghost {
  background: transparent;
  border-color: var(--color-rule);
  color: var(--color-text);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

/* Hero
   ------------------------------------------------------------ */
.hero {
  padding-block: clamp(var(--space-xl), 12vw, var(--space-3xl)) var(--space-2xl);
  border-bottom: var(--rule-thin) solid var(--color-border);
}

.hero__eyebrow {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-md);
}

.hero__title {
  max-width: 16ch;
}

.hero__sub {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.25rem, 2vw + 0.5rem, var(--type-step-2));
  color: var(--color-muted);
  margin-top: var(--space-md);
  max-width: 32ch;
}

.hero__meta {
  margin-top: var(--space-lg);
  font-size: 0.95rem;
  color: var(--color-muted);
  letter-spacing: 0.01em;
}

.hero__dates {
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--space-xs);
  max-width: 28rem;
}

.hero__dates li {
  display: grid;
  grid-template-columns: 13rem 1fr;
  gap: var(--space-sm);
  padding-block: 0.35rem;
  border-top: var(--rule-thin, 1px) solid var(--color-border);
}

.hero__dates-date {
  color: var(--color-text);
  font-weight: 500;
}

@media (max-width: 30rem) {
  .hero__dates li { grid-template-columns: 1fr; gap: 0.1rem; }
}

/* Prose blocks
   ------------------------------------------------------------ */
.prose {
  max-width: var(--measure);
}

.prose p {
  margin-bottom: 1em;
}

.prose h2 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.prose h3 {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.prose ul, .prose ol {
  margin: 0 0 1em;
  padding-left: 1.25em;
}

.prose li {
  margin-bottom: 0.4em;
}

.prose blockquote {
  margin: var(--space-md) 0;
  padding-left: var(--space-md);
  border-left: 2px solid var(--color-accent);
  font-family: var(--font-display);
  font-style: italic;
  color: var(--color-text);
}

/* Two-column comparison (Class vs Community)
   ------------------------------------------------------------ */
.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: var(--rule-thin) solid var(--color-border);
  background: var(--color-surface);
}

.compare__col {
  padding: var(--space-lg);
}

.compare__col + .compare__col {
  border-left: var(--rule-thin) solid var(--color-border);
}

.compare__col h3 {
  margin-bottom: var(--space-sm);
}

.compare__col .eyebrow {
  margin-bottom: var(--space-xs);
}

.compare__col ul {
  list-style: none;
  padding: 0;
  margin: var(--space-sm) 0 0;
}

.compare__col li {
  padding: var(--space-2xs) 0;
  border-top: var(--rule-thin) solid var(--color-border);
  font-size: 0.95rem;
  display: flex;
  justify-content: space-between;
  gap: var(--space-sm);
}

.compare__col li span:first-child {
  color: var(--color-muted);
}

@media (max-width: 720px) {
  .compare {
    grid-template-columns: 1fr;
  }
  .compare__col + .compare__col {
    border-left: 0;
    border-top: var(--rule-thin) solid var(--color-border);
  }
}

/* Schedule / pillars list
   ------------------------------------------------------------ */
.numbered-list {
  list-style: none;
  counter-reset: ol;
  padding: 0;
  margin: 0;
  max-width: 48rem;
}

.numbered-list > li {
  counter-increment: ol;
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-top: var(--rule-thin) solid var(--color-border);
}

.numbered-list > li:last-child {
  border-bottom: var(--rule-thin) solid var(--color-border);
}

.numbered-list > li::before {
  content: counter(ol, decimal-leading-zero);
  font-family: var(--font-display);
  font-size: var(--type-step-2);
  color: var(--color-faint);
  letter-spacing: -0.01em;
}

.numbered-list h3 {
  margin-bottom: var(--space-2xs);
}

.numbered-list p {
  margin: 0;
  color: var(--color-muted);
  max-width: 50ch;
}

@media (max-width: 600px) {
  .numbered-list > li {
    grid-template-columns: 1fr;
    gap: var(--space-2xs);
  }
}

/* Format diagram (instruction / forum)
   ------------------------------------------------------------ */
.format-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

/* Each instruction/forum pair is a vertical column; pairs wrap to the next line. */
.format-pair {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

@media (max-width: 40rem) {
  .format-grid { grid-template-columns: 1fr; }
}

.format-cell {
  border: var(--rule-thin) solid var(--color-border);
  padding: var(--space-md);
  background: var(--color-surface);
}

.format-cell--instruction {
  background: var(--color-bg);
}

.format-cell__week {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--color-faint);
  text-transform: uppercase;
  margin-bottom: var(--space-2xs);
}

.format-cell__type {
  font-family: var(--font-display);
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.format-cell__note {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0;
}

@media (max-width: 820px) {
  .format-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Speaker / card grid
   ------------------------------------------------------------ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.card {
  border-top: 2px solid var(--color-text);
  padding-top: var(--space-md);
}

.card__name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 var(--space-2xs);
}

.card__title {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0 0 var(--space-sm);
  letter-spacing: 0.01em;
}

.card__bio {
  font-size: 0.95rem;
  color: var(--color-text);
  margin: 0;
}

.placeholder-portrait {
  aspect-ratio: 4 / 5;
  background: var(--color-surface);
  border: var(--rule-thin) solid var(--color-border);
  display: grid;
  place-items: center;
  color: var(--color-faint);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

/* Forms
   ------------------------------------------------------------ */
.form {
  max-width: 40rem;
  margin-top: var(--space-lg);
}

.form__field {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--space-md);
}

.form__field label {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-2xs);
}

.form__field input,
.form__field textarea,
.form__field select {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.75rem 0.85rem;
  border: var(--rule-thin) solid var(--color-rule);
  background: var(--color-bg);
  color: var(--color-text);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}

.form__field input:focus,
.form__field textarea:focus,
.form__field select:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form__field textarea {
  min-height: 7rem;
  resize: vertical;
  line-height: 1.5;
}

.form__field--row {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-sm);
}

.form__field--row label {
  margin: 0;
  text-transform: none;
  font-weight: 400;
  letter-spacing: 0;
  font-size: 0.95rem;
  color: var(--color-text);
}

.form__field--row input[type="checkbox"],
.form__field--row input[type="radio"] {
  width: auto;
  accent-color: var(--color-accent);
}

.form__hint {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: var(--space-2xs);
}

.form__submit {
  margin-top: var(--space-lg);
}

/* FAQ
   ------------------------------------------------------------ */
.faq-list {
  border-top: var(--rule-thin) solid var(--color-border);
}

.faq-item {
  border-bottom: var(--rule-thin) solid var(--color-border);
  padding: var(--space-md) 0;
}

.faq-item summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-text);
  padding-right: var(--space-md);
  position: relative;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-accent);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item p {
  margin-top: var(--space-sm);
  color: var(--color-text);
}

/* Footer
   ------------------------------------------------------------ */
.site-footer {
  border-top: var(--rule-thin) solid var(--color-border);
  padding-block: var(--space-xl);
  margin-top: var(--space-2xl);
  font-size: 0.9rem;
  color: var(--color-muted);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-lg);
}

.site-footer h4 {
  margin-bottom: var(--space-sm);
}

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer li {
  margin-bottom: var(--space-2xs);
}

.site-footer a {
  color: var(--color-text);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--color-accent);
}

.site-footer__meta {
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: var(--rule-thin) solid var(--color-border);
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--color-faint);
}

@media (max-width: 720px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

/* Town hall (teaser) specific
   ------------------------------------------------------------ */
.teaser {
  min-height: 80vh;
  display: grid;
  place-items: center;
  text-align: center;
}

.teaser__inner {
  max-width: 36rem;
  padding: var(--space-2xl) var(--space-md);
}

.teaser h1 {
  font-size: clamp(var(--type-step-3), 5vw, var(--type-step-5));
  margin-bottom: var(--space-md);
}

.teaser .lead {
  margin-inline: auto;
}

.teaser .form {
  margin-inline: auto;
  max-width: 24rem;
  margin-top: var(--space-lg);
}

.teaser .form__field--row {
  justify-content: center;
}

/* Utilities
   ------------------------------------------------------------ */
.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;
}

.divider {
  border: 0;
  border-top: var(--rule-thin) solid var(--color-border);
  margin: var(--space-xl) 0;
}

.divider--short {
  width: 4rem;
  border-color: var(--color-accent);
  border-top-width: 2px;
  margin-block: var(--space-md);
}

.text-center { text-align: center; }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }

/* Reduced motion
   ------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
  html {
    scroll-behavior: auto;
  }
}