/* Camino Prep — Coach app shell
   The shared native-app-style design system for every Coach page, on every
   country, independent of PWA installability (plan.md's UI/Design
   Direction — only install affordance itself is India-gated, this
   presentation layer is not). Depends on tokens.css for brand variables
   (loaded alongside this file, same convention as storefront.css). Plain
   CSS, no build step, matching the existing unbundled app/static/**/*.js
   pattern. */

/* ---------- Shell layout ---------- */
.coach-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper-050);
  padding-top: env(safe-area-inset-top);
}

.coach-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--paper-000);
  border-bottom: 1px solid var(--border-100);
}
.coach-topbar__title { font-family: var(--font-display); font-size: var(--fs-500); font-weight: 600; color: var(--ink-900); }
.coach-topbar__back {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.25rem; height: 2.25rem; border-radius: var(--radius-pill);
  background: var(--paper-100); color: var(--ink-900); text-decoration: none;
  flex: none;
}

.coach-main {
  flex: 1;
  width: 100%;
  max-width: 560px;
  margin-inline: auto;
  padding: var(--space-4);
  /* Bottom tab bar height + safe area, so the last card is never clipped. */
  padding-bottom: calc(5.5rem + env(safe-area-inset-bottom));
}

/* ---------- Bottom tab bar ---------- */
.coach-tabbar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 20;
  display: flex;
  justify-content: space-around;
  background: var(--paper-000);
  border-top: 1px solid var(--border-100);
  padding: var(--space-2) var(--space-2) calc(var(--space-2) + env(safe-area-inset-bottom));
}
.coach-tabbar__item {
  display: flex; flex-direction: column; align-items: center; gap: .25rem;
  flex: 1; min-width: 0;
  color: var(--text-400); text-decoration: none; font-size: var(--fs-200); font-weight: 600;
  padding-block: .25rem;
  transition: color var(--dur-fast) var(--ease-out);
}
.coach-tabbar__item svg { width: 22px; height: 22px; }
.coach-tabbar__item[aria-current="page"] { color: var(--ascent-600); }

/* ---------- Cards ---------- */
.coach-card {
  background: var(--paper-000);
  border: 1px solid var(--border-100);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
}
.coach-card__title { font-size: var(--fs-400); font-weight: 600; color: var(--ink-900); margin-bottom: var(--space-2); }
.coach-card__body { color: var(--text-600); font-size: var(--fs-300); line-height: var(--lh-normal); }

.coach-card--cta {
  background: linear-gradient(160deg, var(--ascent-500), var(--ascent-700));
  color: var(--text-on-ink-high);
  border: none;
}
.coach-card--cta .coach-card__title { color: var(--text-on-ink-high); }
.coach-card--cta .coach-card__body { color: var(--text-on-ink-mid); }

/* ---------- Card-forward stack transition (question-to-question nav) ---------- */
.coach-card-stack { position: relative; }
.coach-card-stack__item {
  transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}
.coach-card-stack__item.is-leaving { transform: translateX(-24px); opacity: 0; }
.coach-card-stack__item.is-entering { transform: translateX(24px); opacity: 0; }
.coach-card-stack__item.is-active { transform: translateX(0); opacity: 1; }

/* ---------- Streak strip ---------- */
.coach-streak-strip { display: flex; gap: var(--space-2); margin-bottom: var(--space-3); }
.coach-streak-strip__day {
  flex: 1; height: .5rem; border-radius: var(--radius-pill);
  background: var(--paper-200);
}
.coach-streak-strip__day.is-complete { background: var(--signal-500); }

/* ---------- Badge grid ---------- */
.coach-badge-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
.coach-badge {
  display: flex; flex-direction: column; align-items: center; gap: var(--space-2);
  text-align: center; padding: var(--space-3); border-radius: var(--radius-md);
  background: var(--paper-000); border: 1px solid var(--border-100);
}
.coach-badge__icon {
  width: 3rem; height: 3rem; border-radius: var(--radius-pill);
  display: flex; align-items: center; justify-content: center;
  background: var(--paper-100); color: var(--dawn-600); font-size: 1.5rem;
}
.coach-badge.is-locked { opacity: .45; }
.coach-badge.is-locked .coach-badge__icon { background: var(--paper-200); color: var(--text-400); }
.coach-badge__title { font-size: var(--fs-200); font-weight: 600; color: var(--ink-900); }

/* ---------- Chart containers (SVG injected by charts.js) ---------- */
.coach-chart { width: 100%; }
.coach-chart--gauge { max-width: 180px; margin-inline: auto; }

/* ---------- Install prompt card (US2, T043) ---------- */
.coach-install-prompt {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-3);
}
.coach-install-prompt__dismiss {
  background: none; border: none; color: inherit; font-size: 1.25rem; line-height: 1;
  padding: .25rem; cursor: pointer;
}

/* ---------- Writing practice (US5) ---------- */
.coach-writing-input {
  width: 100%; margin-top: var(--space-3); padding: var(--space-3);
  border-radius: var(--radius-md); border: 1.5px solid var(--border-200);
  font-family: inherit; font-size: var(--fs-300); resize: vertical;
}
.coach-writing-history { margin-top: var(--space-4); display: flex; flex-direction: column; gap: var(--space-3); }
.coach-writing-submission {
  padding: var(--space-3); border-radius: var(--radius-md); background: var(--paper-100);
}
.coach-writing-submission__text { color: var(--text-600); font-size: var(--fs-300); margin-bottom: var(--space-2); }
.coach-writing-submission__feedback { color: var(--ink-900); font-size: var(--fs-300); line-height: var(--lh-normal); }
.coach-writing-status { font-style: italic; color: var(--text-600); }
.coach-writing-status--failed { color: #C23C1C; font-style: normal; }
.coach-writing-retry { margin-left: var(--space-2); }