/* Aptis — unified soft UI layer (load after theme files) */

:root {
  --font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --nav-h: 48px;
  --shadow-soft: 0 4px 20px rgba(45, 42, 38, 0.06);
  --shadow-lift: 0 8px 28px rgba(45, 42, 38, 0.08);
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

body.home-page {
  --nav-h: 56px;
}

body.course-app {
  font-family: var(--font-sans);
  letter-spacing: -0.01em;
}

/* ── Glass sticky bars (navbar, hub, exam, answers) ── */
.aptis-navbar,
.exam-top,
.answers-top,
.hub-top-bar {
  background: rgba(255, 252, 248, 0.88) !important;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  box-shadow: none !important;
}

.aptis-navbar { padding-top: 0.25rem; padding-bottom: 0.25rem; }

body.home-page .aptis-navbar {
  padding-top: 0.35rem;
  padding-bottom: 0.35rem;
}

.aptis-navbar-start {
  gap: 2px;
  min-width: 0;
}

.aptis-navbar .navbar-brand.logo {
  margin-right: 0;
  padding-top: 0;
  padding-bottom: 0;
}

/* Trang khác: logo nhỏ, chỉ icon */
.aptis-navbar .logo {
  --logo-icon-size: 26px;
  --logo-gap: 0;
}

.aptis-navbar .logo__word {
  display: none;
}

/* Trang chủ: logo lớn hơn một chút + chữ Aptis trên màn rộng */
body.home-page .aptis-navbar .logo {
  --logo-icon-size: 34px;
  --logo-word-size: 1.1rem;
  --logo-gap: 8px;
}

@media (min-width: 480px) {
  body.home-page .aptis-navbar .logo__word {
    display: inline-flex;
  }
}

.aptis-navbar.sticky-top,
.aptis-navbar {
  z-index: 1030;
  box-shadow: 0 1px 0 var(--line), 0 4px 16px rgba(45, 42, 38, 0.06) !important;
}

html {
  scroll-padding-top: calc(var(--nav-h) + 12px);
}

.aptis-navbar .btn {
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.85rem;
}

.aptis-navbar .dropdown-menu {
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lift);
  padding: 6px;
}

.aptis-navbar .dropdown-item {
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
}

.aptis-back-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-right: 2px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-soft);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  box-shadow: var(--shadow-soft);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease), transform 0.15s var(--ease);
}

.aptis-back-btn:hover {
  color: var(--accent);
  border-color: rgba(233, 69, 96, 0.28);
  background: var(--accent-soft);
  transform: translateX(-1px);
}

.hub-top-bar {
  position: sticky;
  top: var(--nav-h);
  z-index: 30;
  margin: -20px -16px 20px;
  padding: 12px 16px;
}

body.exam-page .exam-top,
body.answers-page .answers-top {
  top: 0;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* ── Pill navigation (exam, answers, filters) ── */
.q-nav-bar,
.answers-nav,
.filter-bar {
  scrollbar-width: none;
}
.q-nav-bar::-webkit-scrollbar,
.answers-nav::-webkit-scrollbar { display: none; }

button.q-nav,
.filter-btn,
.skill-card {
  font-family: var(--font-sans);
  appearance: none;
  -webkit-appearance: none;
}

.q-nav,
.answers-nav .q-nav {
  flex: 0 0 auto;
  border: 0;
  border-radius: 999px;
  padding: 8px 14px;
  background: #fff;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(45, 42, 38, 0.05);
  transition: background 0.2s var(--ease), color 0.2s var(--ease), box-shadow 0.2s var(--ease), transform 0.15s var(--ease);
}

.q-nav:hover,
.filter-btn:hover { color: var(--accent); }

.q-nav.active,
.filter-btn.active,
.answers-nav .q-nav.active {
  background: var(--accent) !important;
  color: #fff !important;
  box-shadow: 0 4px 14px rgba(233, 69, 96, 0.22);
}

.q-nav.correct { background: var(--ok-soft) !important; color: var(--ok) !important; box-shadow: none; }
.q-nav.wrong { background: var(--bad-soft) !important; color: var(--bad) !important; box-shadow: none; }
.q-nav.partial { background: #fef3c7 !important; color: #b45309 !important; box-shadow: none; }

/* ── Soft cards ── */
.course-hero,
.course-chapter,
.section-card,
.question,
.answers-panel,
.q-panel,
.content-page-body {
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  transition: box-shadow 0.2s var(--ease), transform 0.15s var(--ease), border-color 0.2s var(--ease);
}

.section-card:hover {
  box-shadow: var(--shadow-lift);
  border-color: rgba(233, 69, 96, 0.18);
}

.content-page-body {
  background: var(--paper);
  border-radius: var(--radius-lg);
  padding: 20px 18px 24px;
  margin-top: 4px;
  overflow: hidden;
}

/* Soften legacy dark inline HTML inside guides */
.content-page-body [style*="background:#"],
.content-page-body [style*="background: #"],
.content-page-body .w3-black,
.content-page-body .w3-dark-grey {
  background: #f6f2ec !important;
  color: var(--ink) !important;
  border-radius: var(--radius-md);
}

.content-page-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 0.92rem;
}

.content-page-body th,
.content-page-body td {
  padding: 10px 12px;
  border: 1px solid var(--line);
  text-align: left;
}

.content-page-body th {
  background: #f6f2ec;
  font-weight: 600;
}

.content-page-body img,
.content-page-body video {
  max-width: 100%;
  border-radius: var(--radius-md);
}

.content-page-body h1,
.content-page-body h2,
.content-page-body h3 {
  letter-spacing: -0.02em;
  color: var(--ink);
}

/* ── Page shells ── */
.course-wrap,
.hub-wrap,
.answers-main,
body.exam-page main {
  animation: aptis-fade-in 0.35s var(--ease);
}

@keyframes aptis-fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Hub hero ── */
.hub-badge,
.course-eyebrow,
.exam-badge,
.answers-badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hub-title,
.course-hero h1,
.answers-title {
  letter-spacing: -0.02em;
}

/* ── Buttons ── */
.btn-primary {
  border-radius: 999px !important;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(233, 69, 96, 0.2);
  transition: transform 0.15s var(--ease), box-shadow 0.2s var(--ease);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(233, 69, 96, 0.28);
}

.btn-check-all,
.btn-check-one,
.hub-home-btn,
.hub-back,
.exam-back,
.answers-back {
  font-family: var(--font-sans);
}

/* ── Auth pages ── */
.aptis-auth-wrap {
  max-width: 420px;
  margin: 40px auto 48px;
  padding: 0 16px;
}

.aptis-auth-card {
  background: var(--paper);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-lift);
  border: 1px solid var(--line);
}

.aptis-auth-card .form-control {
  border-radius: var(--radius-sm);
  border: 1.5px solid #e6e0d8;
  padding: 0.6rem 0.85rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.aptis-auth-card .form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

/* ── Media ── */
video.quiz-video,
.quiz-hint video,
audio.quiz-audio {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

video.quiz-video {
  display: block;
  width: 100%;
  max-height: 360px;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #111;
}

/* ── Quiz hints ── */
.quiz-hint {
  border-radius: var(--radius-md);
  border: 1px solid rgba(21, 128, 61, 0.15);
  border-left-width: 4px;
}

.skill-card.active {
  border-color: rgba(233, 69, 96, 0.45) !important;
  background: var(--accent-soft) !important;
  box-shadow: 0 4px 14px rgba(233, 69, 96, 0.12);
}

.vocab-lesson-card,
.vocab-topic-card,
.vocab-stat-pill,
.vocab-flashcard {
  box-shadow: var(--shadow-soft);
  transition: box-shadow 0.2s var(--ease), transform 0.15s var(--ease);
}

.vocab-lesson-card:hover,
.vocab-topic-card:hover {
  box-shadow: var(--shadow-lift);
}

/* ── Focus pages keep navbar; secondary bars stick below it ── */
body.exam-page .exam-top,
body.writing-set-page .exam-top {
  top: var(--nav-h);
}

body.answers-page .answers-top {
  top: var(--nav-h);
}

/* ── Progress / completion marks ── */
.section-card--done {
  border-color: rgba(21, 128, 61, 0.28) !important;
  background: linear-gradient(90deg, rgba(220, 252, 231, 0.55), transparent 40%);
}

.section-card--started {
  border-color: rgba(180, 83, 9, 0.22) !important;
  background: linear-gradient(90deg, rgba(254, 243, 199, 0.45), transparent 40%);
}

.course-lesson--done {
  border-left: 3px solid var(--ok);
}

.course-lesson--started {
  border-left: 3px solid #f59e0b;
}

.lesson-status {
  font-size: 0.85rem;
  margin-left: auto;
  margin-right: 4px;
}

.lesson-status--done { color: var(--ok); }
.lesson-status--started { color: #d97706; }

.writing-submitted-badge {
  font-size: 0.82rem;
  color: #166534;
  background: #ecfdf5;
  border: 1px solid rgba(21, 128, 61, 0.2);
  border-radius: 8px;
  padding: 6px 10px;
  margin-bottom: 8px;
}

.history-wrap .history-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.history-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.history-item-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
}

.history-item-icon { font-size: 1.4rem; line-height: 1; }
.history-item-body { flex: 1; min-width: 0; }
.history-item-title { font-weight: 600; }
.history-item-meta { font-size: 0.85rem; color: var(--muted); margin-top: 2px; }
.history-item-link {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  color: var(--accent);
}

.history-submission summary {
  cursor: pointer;
  padding: 10px 16px;
  font-size: 0.88rem;
  font-weight: 600;
  border-top: 1px solid var(--line);
  background: #fafafa;
}

.history-submission-body {
  padding: 12px 16px 16px;
  font-size: 0.9rem;
}

.history-submission-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin: 10px 0 6px;
}

.history-submission-answer {
  white-space: pre-wrap;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
}

.history-score-list {
  margin: 0;
  padding-left: 1.1rem;
}

.history-empty {
  margin-top: 24px;
  color: var(--muted);
}

.aptis-progress {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.aptis-progress-track {
  flex: 1;
  height: 8px;
  background: #eef2f7;
  border-radius: 999px;
  overflow: hidden;
}

.aptis-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #f97316, var(--accent));
  border-radius: 999px;
  transition: width 0.25s ease;
}

.aptis-progress-fill--done {
  background: linear-gradient(90deg, #22c55e, #16a34a);
}

.aptis-progress-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink);
  min-width: 2.8rem;
  text-align: right;
}

.aptis-progress-detail {
  font-size: 0.78rem;
  color: var(--muted);
  white-space: nowrap;
}

.aptis-progress--hub,
.aptis-progress--exam {
  margin-top: 8px;
}

.aptis-progress--card {
  margin-top: 6px;
}

.hub-progress-panel,
.exam-progress-panel {
  margin: 10px 0 4px;
}

.section-progress-wrap {
  width: 100%;
  padding: 0 16px 10px;
}

.lesson-progress-pill,
.exam-progress-pill,
.writing-set-progress-pill {
  font-size: 0.78rem;
  font-weight: 700;
  color: #c2410c;
  background: #fff7ed;
  border: 1px solid rgba(249, 115, 22, 0.25);
  border-radius: 999px;
  padding: 2px 8px;
  margin-left: auto;
  margin-right: 6px;
}

.section-card {
  align-items: center;
}

.section-card .section-progress-wrap {
  flex: 1 1 100%;
  order: 10;
}

/* ── Circular progress ring ── */
.aptis-progress-ring {
  --ring-size: 36px;
  --ring-thickness: 4px;
  --ring-track: #dce3ec;
  --ring-fill: #f97316;
  --ring-done: #22c55e;
  width: var(--ring-size);
  height: var(--ring-size);
  border-radius: 50%;
  flex-shrink: 0;
  background:
    conic-gradient(
      var(--ring-fill) calc(var(--percent, 0) * 3.6deg),
      var(--ring-track) 0
    );
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-sizing: border-box;
}

.aptis-progress-ring--done {
  --ring-fill: var(--ring-done);
}

.aptis-progress-ring--active {
  --ring-fill: #f97316;
}

.aptis-progress-ring--lesson {
  --ring-size: 34px;
  --ring-thickness: 3px;
}

.aptis-progress-ring--card {
  --ring-size: 38px;
}

.aptis-progress-ring--hub {
  --ring-size: 52px;
  --ring-thickness: 5px;
}

.aptis-progress-ring__inner {
  width: calc(var(--ring-size) - var(--ring-thickness) * 2);
  height: calc(var(--ring-size) - var(--ring-thickness) * 2);
  border-radius: 50%;
  background: var(--paper, #fff);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.04);
}

.aptis-progress-ring__value {
  font-size: 0.62rem;
  font-weight: 800;
  line-height: 1;
  color: var(--ink);
  letter-spacing: -0.02em;
  display: block;
  text-align: center;
  font-variant-numeric: tabular-nums;
  transform: translateY(0.5px);
}

.aptis-progress-ring--lesson .aptis-progress-ring__value {
  font-size: 0.58rem;
}

.aptis-progress-ring--hub .aptis-progress-ring__value {
  font-size: 0.72rem;
}

.aptis-progress-ring--exam {
  --ring-size: 42px;
}

.exam-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.exam-progress-detail,
.writing-set-progress-detail {
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 600;
}

.aptis-progress-ring[style*="--percent: 0"] .aptis-progress-ring__value,
.aptis-progress-ring:not(.aptis-progress-ring--active):not(.aptis-progress-ring--done) .aptis-progress-ring__value {
  color: var(--ink-muted);
}

.hub-progress-panel {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 10px 0 16px;
}

.hub-progress-caption {
  font-size: 0.88rem;
  color: var(--muted);
  font-weight: 600;
}

.course-lesson[data-skill="reading"] .aptis-progress-ring--active { --ring-fill: #6366f1; }
.course-lesson[data-skill="listening"] .aptis-progress-ring--active { --ring-fill: #8b5cf6; }
.course-lesson[data-skill="speaking"] .aptis-progress-ring--active { --ring-fill: #ec4899; }
.course-lesson[data-skill="writing"] .aptis-progress-ring--active { --ring-fill: #f97316; }
.course-lesson[data-skill="vocabulary"] .aptis-progress-ring--active { --ring-fill: #14b8a6; }