/* ==========================================================================
   Component Styles - Micro Learning English (Brand v3 – Stitch)
   ========================================================================== */

/* Nút bấm (Buttons) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-8);
  padding: 12px 24px;
  font-family: var(--font-family-base);
  font-size: 16px;
  font-weight: var(--font-weight-semibold);
  line-height: 1.4;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  border: 1.5px solid transparent;
  text-align: center;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-strong);
  outline-offset: 2px;
}

/* Nút chính: nền tím #5300B9, chữ trắng */
.btn-primary {
  background-color: var(--color-cta);
  color: var(--color-cta-text);
  font-weight: var(--font-weight-bold);
  border-color: var(--color-cta);
}

.btn-primary:hover {
  background-color: var(--color-cta-hover);
  border-color: var(--color-cta-hover);
  color: var(--color-cta-text);
  text-decoration: none;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
  opacity: 1;
}

/* Nút phụ: nền trắng, viền và chữ tím */
.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-primary-strong);
  border-color: var(--color-primary-strong);
}

.btn-secondary:hover {
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  text-decoration: none;
  opacity: 1;
}

/* Thẻ nội dung: nền trắng, viền mảnh, bo góc 12px */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-24);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

/* Khung highlight: nền kem vàng, viền trái 4px tím */
.box-highlight {
  background-color: var(--color-highlight);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary-strong);
  border-radius: var(--radius-md);
  padding: var(--spacing-16);
  margin-bottom: var(--spacing-24);
}

/* Nhãn trình độ A1, A2, B1, B2 (dạng viên thuốc, chữ in hoa) */
.badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1.4;
  border-radius: var(--radius-full);
  text-align: center;
  white-space: nowrap;
  border: 1px solid transparent;
}

.badge-a1 {
  background-color: var(--color-badge-a1-bg);
  color: var(--color-badge-a1-text);
}

.badge-a2 {
  background-color: var(--color-badge-a2-bg);
  color: var(--color-badge-a2-text);
}

.badge-b1 {
  background-color: var(--color-badge-b1-bg);
  color: var(--color-badge-b1-text);
}

.badge-b2 {
  background-color: var(--color-badge-b2-bg);
  color: var(--color-badge-b2-text);
}

/* Form & Input controls */
.form-group {
  margin-bottom: var(--spacing-16);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
}

.form-label {
  font-size: 14px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-family-base);
  font-size: 16px;
  color: var(--color-text);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus {
  border-color: var(--color-primary-strong);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}

.form-input::placeholder {
  color: #706A7B; /* 5.2:1 trên nền trắng */
}

/* ==========================================================================
   Infographic (dùng cho trang khóa học, bài test)
   ========================================================================== */

/* Đầu mục có icon */
.h-icon {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: var(--spacing-8);
}

.h-icon h2 {
  margin-bottom: 0;
}

.ico {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  display: grid;
  place-items: center;
}

.ico svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Dải số liệu nhanh */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  max-width: 900px;
  margin: 0 auto var(--spacing-32);
}

.stat {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px 12px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.stat .ico {
  width: 36px;
  height: 36px;
  margin: 0 auto 8px;
  border-radius: var(--radius-full);
}

.stat .ico svg {
  width: 18px;
  height: 18px;
}

.stat-value {
  display: block;
  font-size: 24px;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-primary);
  line-height: 1.15;
}

.stat-label {
  display: block;
  font-size: 13px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* Thanh lộ trình theo module (độ dài tỉ lệ số buổi) */
.timeline {
  display: flex;
  gap: 4px;
  margin-top: var(--spacing-16);
}

.tl-seg {
  flex: var(--n, 1) 1 0;
  min-width: 0;
  border-radius: var(--radius-md);
  padding: 12px 10px;
  color: var(--color-white);
  font-size: 13px;
  line-height: 1.4;
}

.tl-seg strong {
  display: block;
  font-size: 14px;
}

.tl-seg:nth-child(5n+1) { background-color: #4C1D95; }
.tl-seg:nth-child(5n+2) { background-color: #5300B9; }
.tl-seg:nth-child(5n+3) { background-color: #6C2BD9; }
.tl-seg:nth-child(5n+4) { background-color: #7C3AED; }
.tl-seg.tl-final { background-color: #B45309; }

.tl-scale {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
  margin-top: 6px;
}

@media (max-width: 640px) {
  .timeline { flex-direction: column; }
  .tl-scale { display: none; }
}

/* Sơ đồ các bước */
.flow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
  margin-top: var(--spacing-16);
}

.flow-step {
  position: relative;
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px;
}

.flow-num {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 13px;
  font-weight: var(--font-weight-bold);
  margin-bottom: 8px;
}

.flow-step strong {
  display: block;
  color: var(--color-text);
  margin-bottom: 4px;
}

.flow-step p {
  font-size: 14px;
  margin-bottom: 0;
}

/* Thẻ tiêu chí có thanh đo */
.crit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
  margin-top: var(--spacing-16);
}

.crit {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px;
  background-color: var(--color-white);
}

.crit-name {
  display: block;
  font-size: 13px;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.crit-value {
  display: block;
  font-size: 22px;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-primary);
  margin: 4px 0 8px;
}

.crit p {
  font-size: 14px;
  margin: 8px 0 0;
}

.meter {
  height: 8px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-muted);
  overflow: hidden;
}

.meter > i {
  display: block;
  height: 100%;
  width: var(--v, 0%);
  border-radius: inherit;
  background: linear-gradient(90deg, #6C2BD9, #5300B9);
}

.dots {
  display: flex;
  gap: 6px;
}

.dots i {
  width: 14px;
  height: 14px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-muted);
  border: 1px solid var(--color-border);
}

.dots i.on {
  background-color: #5300B9;
  border-color: #5300B9;
}

/* Kết quả bài test: vòng tròn điểm + thang trình độ */
.score-viz {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-24);
  margin-bottom: var(--spacing-16);
}

.donut {
  position: relative;
  width: 132px;
  height: 132px;
}

.donut svg {
  width: 100%;
  height: 100%;
}

.donut-arc {
  transition: stroke-dasharray 0.8s ease;
}

.donut-label {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  line-height: 1.1;
}

.donut-label span {
  font-size: 26px;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-primary);
}

.donut-label small {
  font-size: 13px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
  margin-top: 4px;
}

.ladder {
  display: flex;
  gap: 6px;
  align-items: flex-end;
}

.ladder-step {
  width: 72px;
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 8px 4px;
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  text-align: center;
}

.ladder-step strong {
  display: block;
  font-size: 18px;
  color: var(--color-text);
}

.ladder-step:nth-child(1) { min-height: 64px; }
.ladder-step:nth-child(2) { min-height: 84px; }
.ladder-step:nth-child(3) { min-height: 104px; }

.ladder-step.is-active {
  background-color: #5300B9;
  border-color: #5300B9;
  color: #FFFFFF;
}

.ladder-step.is-active strong {
  color: #FFFFFF;
}

/* Bài test: tiêu đề phần, nút nghe, ghi âm, điểm theo kỹ năng */
.quiz-part {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  margin: var(--spacing-32) 0 var(--spacing-8);
}

.quiz-part small {
  font-size: 14px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
}

.quiz-note {
  font-size: 14px;
  margin-bottom: var(--spacing-16);
}

.listen-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  margin-bottom: 4px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-primary-strong);
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  font-family: var(--font-family-base);
  font-size: 15px;
  font-weight: var(--font-weight-bold);
  cursor: pointer;
}

.listen-btn:hover { background-color: #E9DEFF; }
.listen-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.listen-btn.is-playing { background-color: var(--color-primary); color: var(--color-white); }

.rec-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.rec-row audio {
  max-width: 100%;
  height: 40px;
}

.rec-btn.is-recording {
  background-color: #FFE4E6;
  border-color: #B91C1C;
  color: #B91C1C;
}

.rec-dl {
  font-weight: var(--font-weight-bold);
}

.skills {
  display: grid;
  gap: 10px;
  max-width: 520px;
  margin: 0 auto var(--spacing-16);
  text-align: left;
}

.skill-row {
  display: grid;
  grid-template-columns: 170px 1fr 44px;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.skill-score { text-align: right; }

@media (max-width: 480px) {
  .skill-row { grid-template-columns: 1fr 44px; }
  .skill-row .meter { grid-column: 1 / -1; grid-row: 2; }
}