/*
 * Nawa design tokens + /t/:slug page styles.
 *
 * Source of truth: web/DESIGN.md (Nawa overlay) on top of the rope-sites
 * umbrella DESIGN.md. The tokens here mirror that doc 1:1; do not redefine
 * a value here without updating the spec first.
 *
 * Loaded via `<%= stylesheet_link_tag "nawa" %>` from layouts/nawa.html.erb
 * (NOT from layouts/application.html.erb — Nawa is a separate surface).
 */

:root {
  /* Inherited from rope-sites umbrella — see DESIGN.md */
  --color-page: #f7f3ea;                       /* kinari */
  --color-page-tint: #fbf8f0;                  /* lighter kinari for radial gradient tops */
  --color-surface: rgba(255, 255, 255, 0.92);
  --color-surface-strong: #ffffff;
  --color-text: #1a2332;                       /* sumi */
  --color-muted: #5a6372;
  --color-border: rgba(26, 35, 50, 0.14);
  --color-aizome: #2c4a6b;                     /* link color, all sites */
  --color-aizome-visited: #4a3e6b;             /* visited-link distinction */
  --color-matcha: #5f6b3a;                     /* success */
  --color-danger: #8a2a2a;
  --color-focus: #2c4a6b;

  /* Nawa-specific accent (kakiiro persimmon, locked 2026-04-27) */
  --color-nawa: #c2562a;
  --color-nawa-hover: #a84620;

  /* Fonts */
  --font-display: "Instrument Serif", Georgia, "Times New Roman", serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Spacing — 8px grid */
  --space-2xs: 2px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 14px;     /* button radius */
  --radius-lg: 20px;     /* surface card radius */
  --radius-full: 9999px;
}

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

body.nawa {
  margin: 0;
  background: radial-gradient(circle at top, var(--color-page-tint) 0%, var(--color-page) 60%);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
}

body.nawa a {
  color: var(--color-aizome);
  text-decoration: underline;
  text-underline-offset: 3px;
}
body.nawa a:visited { color: var(--color-aizome-visited); }
body.nawa a:hover { color: var(--color-nawa); }
body.nawa :focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 4px;
}

/* === Site chrome === */
.nawa-mark {
  position: absolute; top: 24px; left: 24px; z-index: 10;
  font-family: var(--font-display); font-style: italic;
  font-size: 1.5rem; letter-spacing: -0.01em;
  line-height: 1;
}
.nawa-mark a,
.nawa-mark a:visited,
.nawa-mark a:hover {
  display: inline-block;
  color: white;
  text-decoration: none;
  padding: 0.3em 0.85em;
  background: rgba(26, 35, 50, 0.42);
  backdrop-filter: blur(8px) saturate(1.1);
  -webkit-backdrop-filter: blur(8px) saturate(1.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  transition: background 0.15s ease;
}
.nawa-mark a:hover {
  background: rgba(26, 35, 50, 0.58);
}
@media (prefers-reduced-motion: reduce) {
  .nawa-mark a { transition: none; }
}

/* === Flash banner (rendered by nawa.html.erb when flash[:notice] / [:alert]) === */
.nawa-flash {
  padding: var(--space-md) var(--space-lg);
  text-align: center;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--color-border);
}
.nawa-flash-notice {
  background: rgba(95, 107, 58, 0.12);
  color: var(--color-matcha);
}
.nawa-flash-alert {
  background: rgba(138, 42, 42, 0.10);
  color: var(--color-danger);
}

/* === Hero banner === */
.banner {
  position: relative;
  height: 320px;
  overflow: hidden;
}
.banner-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 35%;
  display: block;
}
.banner-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(26,35,50,0.05) 0%, rgba(26,35,50,0.4) 100%);
  pointer-events: none;
}
@media (min-width: 768px) {
  .banner { height: 420px; }
}

/* === Page container === */
.page {
  max-width: 720px;
  margin: -80px auto 0;
  padding: 0 var(--space-md) var(--space-3xl);
  position: relative;
  z-index: 5;
}
@media (min-width: 768px) {
  .page { margin-top: -120px; padding: 0 var(--space-xl) var(--space-3xl); }
}

/* === Hero card === */
.hero-card {
  background: var(--color-surface);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  padding: var(--space-xl);
  text-align: left;
}
@media (min-width: 768px) {
  .hero-card { padding: var(--space-2xl); }
}
.hero-card h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 2.25rem;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-sm);
}
@media (min-width: 768px) {
  .hero-card h1 { font-size: 3.25rem; }
}
.hero-card .tagline {
  color: var(--color-muted);
  font-size: 1.05rem;
  margin: 0 0 var(--space-lg);
  max-width: 50ch;
}
.hero-card .cta-row {
  display: flex; gap: var(--space-md); align-items: center; flex-wrap: wrap;
}

/* === Buttons ===
   Note: body.nawa a (specificity 0,1,2) beats plain .btn (0,1,0), so
   <a class="btn"> would otherwise inherit the global aizome link color.
   We pin the button color via body.nawa a.btn selectors so the global
   link rule can't bleed through, regardless of link state. */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-sm);
  background: var(--color-nawa); color: white;
  border: none; border-radius: var(--radius-md);
  padding: 0.75rem 1.25rem;
  font: inherit; font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  min-height: 44px;
  transition: transform 120ms ease-out, background 120ms ease-out;
}
body.nawa a.btn,
body.nawa a.btn:visited,
body.nawa a.btn:hover {
  color: white;
}
.btn:hover { background: var(--color-nawa-hover); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
body.nawa a.btn-ghost,
body.nawa a.btn-ghost:visited,
body.nawa a.btn-ghost:hover {
  color: var(--color-text);
}
.btn-ghost:hover { background: rgba(26,35,50,0.04); transform: translateY(-1px); }
@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
  .btn:hover { transform: none; }
}

/* === Bio section === */
.section { margin-top: var(--space-3xl); }
.section h2 {
  font-family: var(--font-display);
  font-weight: 400; font-style: italic;
  font-size: 1.6rem;
  margin: 0 0 var(--space-md);
  letter-spacing: -0.005em;
}
.bio p {
  margin: 0 0 var(--space-md);
  font-size: 1.05rem;
  max-width: 55ch;
}
.bio .meta {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px dashed var(--color-border);
  color: var(--color-muted);
  font-size: 0.9rem;
}
.meta strong { color: var(--color-text); font-weight: 600; }

/* === Waitlist form === */
.form-card {
  background: var(--color-surface-strong);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-top: var(--space-md);
}
@media (min-width: 768px) {
  .form-card { padding: var(--space-2xl); }
}
.form-card h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.5rem;
  margin: 0 0 var(--space-xs);
}
.form-card .form-lede {
  color: var(--color-muted);
  margin: 0 0 var(--space-lg);
  font-size: 0.95rem;
}
.field { margin-bottom: var(--space-lg); }
.field label,
.field legend {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  padding: 0;
}
fieldset.field { border: 0; padding: 0; margin-inline: 0; }

.field input[type="email"],
.field select,
.field textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font: inherit;
  background: white;
  min-height: 44px;
}
.field input[type="email"]:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 1px;
}
.help,
.field .help {
  color: var(--color-muted);
  font-size: 0.8rem;
  margin-top: var(--space-xs);
}

.price-bar { display: flex; gap: var(--space-sm); flex-wrap: wrap; }
.price-chip {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 0.65rem 1rem;
  min-height: 56px;
  flex: 1 1 0;
  min-width: 96px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md, 8px);
  background: white;
  cursor: pointer;
  font: inherit;
  color: var(--color-muted);
  text-align: center;
  line-height: 1.2;
}
.price-chip-amount { font-weight: 600; font-size: 0.95rem; color: var(--color-text); }
.price-chip-content { font-size: 0.78rem; color: var(--color-muted); }
.price-chip[aria-pressed="true"] {
  background: var(--color-nawa);
  border-color: var(--color-nawa);
}
.price-chip[aria-pressed="true"] .price-chip-amount,
.price-chip[aria-pressed="true"] .price-chip-content { color: white; }

.price-free-text { margin-top: var(--space-sm); }
.price-free-text summary {
  cursor: pointer;
  color: var(--color-muted);
  font-size: 0.85rem;
  padding: var(--space-xs) 0;
}
.price-free-text input[type="text"] {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font: inherit;
  background: white;
  min-height: 44px;
}
.price-free-text input[type="text"]:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 1px;
}
.price-error {
  color: var(--color-error, #b3261e);
  font-size: 0.85rem;
  margin-top: var(--space-xs);
}

.consent {
  display: flex; gap: var(--space-sm); align-items: flex-start;
  background: rgba(26,35,50,0.03);
  padding: var(--space-lg);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-lg);
  font-size: 0.9rem; color: var(--color-muted);
}
.consent input {
  width: 18px; height: 18px;
  margin-top: 4px; cursor: pointer; flex-shrink: 0;
}

/* aria-live region for submit feedback (DESIGN.md a11y rule) */
#lead-form-status:empty { display: none; }

/* === Footer === */
.nawa-footer {
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 0.85rem;
  display: flex; justify-content: space-between; gap: var(--space-md); flex-wrap: wrap;
}
.nawa-footer .brand {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1rem;
  color: var(--color-text);
}

/* === Homepage (/) ============================================= */
/* Variant of .nawa-mark for surfaces without a banner backdrop —
   on /t/:slug the mark sits over a dark photo, on / it sits over
   kinari and needs sumi-on-kinari treatment. */
.nawa-mark.nawa-mark-light a,
.nawa-mark.nawa-mark-light a:visited,
.nawa-mark.nawa-mark-light a:hover {
  color: var(--color-text);
  background: rgba(26, 35, 50, 0.04);
  border-color: rgba(26, 35, 50, 0.10);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.nawa-mark.nawa-mark-light a:hover {
  background: rgba(26, 35, 50, 0.08);
}

/* The default .page has margin-top: -80px to overlap the banner;
   the homepage has no banner, so reset that. */
.page-home { margin-top: var(--space-3xl); }
@media (min-width: 768px) {
  .page-home { margin-top: 6rem; }
}

.hero-card-home { text-align: left; }
.hero-card-home .lede {
  font-size: 1.05rem;
  color: var(--color-text);
  margin: 0 0 var(--space-lg);
  max-width: 55ch;
}

.lede-muted {
  color: var(--color-muted);
  font-size: 1rem;
  max-width: 55ch;
  margin: 0;
}

/* Featured-teachers grid — initials avatars, no photos in V0
   (per /plan-eng-review Finding 3). Photos arrive with banner upload V0.5. */
/* Use flex (not grid) so a sparse cohort (1–2 teachers) doesn't get
   forced into 3 narrow columns. Each card sits between 260px and 360px
   wide and wraps naturally — full cohort fills two rows on desktop. */
.featured-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.teacher-card {
  flex: 1 1 260px;
  max-width: 360px;
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  background: var(--color-surface-strong);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: transform 120ms ease-out, border-color 120ms ease-out, box-shadow 120ms ease-out;
}
/* body.nawa a (0,1,2) sets text-decoration: underline + aizome color, so
   the teacher card link inherited both. Pin the card's own visual
   treatment so the global rule can't bleed in. */
body.nawa a.teacher-card,
body.nawa a.teacher-card:visited,
body.nawa a.teacher-card:hover {
  text-decoration: none;
  color: inherit;
}
.teacher-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-nawa);
  box-shadow: 0 6px 20px rgba(194, 86, 42, 0.12);
}
.teacher-avatar {
  flex: 0 0 auto;
  width: 56px; height: 56px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--color-nawa);
  color: white;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  border-radius: 50%;
}
.teacher-card-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}
.teacher-card-name {
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-text);
}
.teacher-card-tagline {
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.4;
}
.teacher-card-meta {
  color: var(--color-muted);
  font-size: 0.8rem;
  font-style: italic;
  margin-top: var(--space-xs);
}
@media (prefers-reduced-motion: reduce) {
  .teacher-card { transition: none; }
  .teacher-card:hover { transform: none; }
}

/* FAQ — collapsed by default via <details>. Kakiiro accent on the
   summary marker comes from the default browser; we just style the
   surrounding box and the answer reveal. */
.faq-item {
  background: var(--color-surface-strong);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  padding: 0 var(--space-lg);
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  padding: var(--space-md) 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: "";
  flex-shrink: 0;
  width: 0.5em;
  height: 0.5em;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 0.15s ease;
  margin-left: 0.1em;
}
.faq-item[open] summary { color: var(--color-nawa); }
.faq-item[open] summary::before {
  transform: rotate(45deg);
}
@media (prefers-reduced-motion: reduce) {
  .faq-item summary::before { transition: none; }
}
.faq-answer {
  padding: 0 0 var(--space-md);
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}
.faq-answer p { margin: 0 0 var(--space-sm); }
.faq-answer p:last-child { margin-bottom: 0; }

/* "Teach with Nawa" CTA — boxed, accent border, mailto. */
.teach-cta {
  background: rgba(194, 86, 42, 0.06);
  border: 1px solid var(--color-nawa);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}
@media (min-width: 768px) {
  .teach-cta { padding: var(--space-2xl); }
}
.teach-cta-body h2 {
  margin-top: 0;
  color: var(--color-text);
  font-style: normal;
}
.teach-cta-body p { margin: 0 0 var(--space-md); max-width: 55ch; }
.teach-cta-personal {
  font-style: italic;
  color: var(--color-muted);
  border-left: 2px solid var(--color-nawa);
  padding-left: var(--space-md);
}

/* === /teachers/me dashboard ===================================
   Utility surface (per /plan-eng-review locked T2) — system-ui only,
   NO Instrument Serif. Teachers glance at this on their phones before
   workshops, so the visual register is informational, not editorial. */
.dashboard-page {
  max-width: 720px;
  margin: var(--space-3xl) auto 0;
  padding: 0 var(--space-md) var(--space-3xl);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (min-width: 768px) {
  .dashboard-page { margin-top: 5rem; padding-inline: var(--space-xl); }
}

.dashboard-header { margin-bottom: var(--space-xl); }
.dashboard-eyebrow {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin: 0 0 var(--space-xs);
}
.dashboard-name {
  font-family: inherit;
  font-weight: 600;
  font-size: 1.5rem;
  margin: 0 0 var(--space-md);
  color: var(--color-text);
}
.dashboard-share {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
}
.dashboard-share-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-surface-strong);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
}
.dashboard-share-link a { color: var(--color-aizome); }
.dashboard-copy-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.2rem 0.5rem;
  font: inherit;
  font-size: 0.75rem;
  color: var(--color-muted);
  cursor: pointer;
  min-height: 28px;
}
.dashboard-copy-btn:hover { border-color: var(--color-nawa); color: var(--color-nawa); }
.dashboard-copy-btn[aria-disabled="true"] {
  color: var(--color-matcha);
  border-color: var(--color-matcha);
}

.dashboard-hero {
  background: var(--color-surface-strong);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  margin-bottom: var(--space-xl);
}
.dashboard-hero-label {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0 0 var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.dashboard-hero-number {
  font-family: inherit;
  font-weight: 700;
  font-size: 4rem;
  line-height: 1;
  margin: 0;
  color: var(--color-nawa);
  font-variant-numeric: tabular-nums;
}
.dashboard-hero-help {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: var(--space-md) 0 0;
}
.dashboard-hero-help-clear { color: var(--color-matcha); font-weight: 600; }

.dashboard-stats { margin-bottom: var(--space-xl); }
.dashboard-stats-heading {
  font-family: inherit;
  font-style: normal;
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-muted);
  margin: 0 0 var(--space-sm);
}
.dashboard-stats-grid {
  display: grid;
  gap: var(--space-sm);
  grid-template-columns: 1fr 1fr;
  margin: 0;
}
@media (min-width: 600px) {
  .dashboard-stats-grid { grid-template-columns: repeat(4, 1fr); }
}
.dashboard-stat {
  background: var(--color-surface-strong);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}
.dashboard-stat dt {
  font-size: 0.75rem;
  color: var(--color-muted);
  margin: 0 0 var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.dashboard-stat dd { margin: 0; display: flex; flex-direction: column; gap: var(--space-2xs); }
.dashboard-stat-value {
  font-weight: 600;
  font-size: 1.5rem;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}
.dashboard-stat-text { font-size: 0.95rem; word-break: break-word; }
.dashboard-stat-meta {
  font-size: 0.75rem;
  color: var(--color-muted);
}

.dashboard-empty {
  background: rgba(194, 86, 42, 0.06);
  border: 1px solid var(--color-nawa);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}
.dashboard-empty h2 {
  font-family: inherit;
  font-style: normal;
  font-weight: 600;
  font-size: 1rem;
  margin: 0 0 var(--space-sm);
  color: var(--color-text);
}
.dashboard-empty p {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0;
  line-height: 1.5;
}

.dashboard-footer {
  font-size: 0.8rem;
  color: var(--color-muted);
  text-align: center;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}
.dashboard-footer p { margin: 0; }