/* ==========================================================================
   SNAPGRADE — HỆ THỐNG GIAO DIỆN LOW-TECH DÀNH RIÊNG CHO MẸ (GIÁO VIÊN)
   Nguyên tắc:
   - Chữ tiếng Việt to, rõ ràng (cơ bản 18px-20px, tiêu đề 24px-32px, điểm 36px+)
   - Nút bấm cực lớn (cao tối thiểu 58px-68px), khoảng cách rộng chống bấm nhầm
   - Độ tương phản cao, màu sắc phân biệt rõ trạng thái
   ========================================================================== */

:root {
  --bg-page: #f1f5f9;
  --bg-card: #ffffff;
  --bg-subtle: #f8fafc;
  --text-main: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;

  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --primary-soft: #dbeafe;
  --primary-border: #93c5fd;

  --success: #15803d;
  --success-hover: #166534;
  --success-soft: #dcfce7;
  --success-border: #86efac;

  --warning: #b45309;
  --warning-soft: #fef3c7;
  --warning-border: #fcd34d;

  --danger: #b91c1c;
  --danger-soft: #fee2e2;
  --danger-border: #fca5a5;

  --purple: #6d28d9;
  --purple-soft: #ede9fe;
  --purple-border: #c4b5fd;

  --border-color: #cbd5e1;
  --shadow-sm: 0 2px 6px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 6px 18px rgba(15, 23, 42, 0.09);
  --shadow-lg: 0 12px 28px rgba(15, 23, 42, 0.14);

  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 18px;
  line-height: 1.55;
  color: var(--text-main);
  background-color: var(--bg-page);
  min-height: 100vh;
}

/* ==========================================================================
   HEADER & THANH ĐIỀU HƯỚNG TRÊN CÙNG
   ========================================================================== */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: 2px solid var(--border-color);
  padding: 14px 20px;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.brand-icon,
.brand-logo-img {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  flex-shrink: 0;
  box-shadow: 0 3px 8px rgba(29, 78, 216, 0.25);
  display: block;
}

.brand-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ==========================================================================
   CONTAINER & MÀN HÌNH CHÍNH
   ========================================================================== */
.app-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 16px 110px;
}

.screen {
  display: none;
  animation: fadeIn 0.2s ease-out;
}

.screen.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   HỆ THỐNG NÚT BẤM CHUẨN LOW-TECH (TO, RÕ, DỄ BẤM)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 60px;
  padding: 14px 24px;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.1s ease, background-color 0.15s ease, box-shadow 0.15s ease;
  text-align: center;
  user-select: none;
  text-decoration: none;
  font-family: inherit;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.btn-xl {
  min-height: 70px;
  font-size: 1.25rem;
  padding: 16px 28px;
  border-radius: var(--radius-lg);
}

.btn-sm {
  min-height: 46px;
  padding: 8px 16px;
  font-size: 0.95rem;
  border-radius: 12px;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(29, 78, 216, 0.25);
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.btn-success {
  background: var(--success);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(21, 128, 61, 0.25);
}

.btn-success:hover:not(:disabled) {
  background: var(--success-hover);
}

.btn-warning {
  background: #d97706;
  color: #ffffff;
}

.btn-outline {
  background: #ffffff;
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-outline:hover:not(:disabled) {
  background: var(--bg-subtle);
  border-color: #94a3b8;
}

.btn-soft-primary {
  background: var(--primary-soft);
  color: var(--primary);
  border-color: var(--primary-border);
}

.btn-soft-danger {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: var(--danger-border);
}

/* ==========================================================================
   THANH TRở LẠI (BACK BAR) RÕ RÀNG Ở ĐẦU MỖI MÀN HÌNH CON
   ========================================================================== */
.top-nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 54px;
  padding: 10px 20px;
  background: #ffffff;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
}

.btn-back:hover {
  background: var(--bg-subtle);
  border-color: var(--primary);
  color: var(--primary);
}

/* ==========================================================================
   BANNER HƯỚNG DẪN NGẮN GỌN CHO MẸ
   ========================================================================== */
.helper-banner {
  background: var(--primary-soft);
  border: 2px solid var(--primary-border);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.helper-banner-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.helper-banner-text h2 {
  font-size: 1.2rem;
  font-weight: 800;
  color: #1e3a8a;
  margin-bottom: 4px;
}

.helper-banner-text p {
  font-size: 1rem;
  color: #1e40af;
}

/* ==========================================================================
   MÀN HÌNH 1: DANH SÁCH THƯ MỤC ĐỢT CHẤM (FOLDER LIST)
   ========================================================================== */
.home-top-actions {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 16px;
  margin-bottom: 26px;
}

@media (max-width: 680px) {
  .home-top-actions {
    grid-template-columns: 1fr;
  }
}

.section-heading {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.folder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 18px;
}

.folder-card {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  position: relative;
}

.folder-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.folder-card-top {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.folder-icon {
  font-size: 2.6rem;
  line-height: 1;
  flex-shrink: 0;
}

.folder-info {
  flex: 1;
}

.folder-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 4px;
  word-break: break-word;
}

.folder-date {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.folder-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
}

.pill-blue {
  background: var(--primary-soft);
  color: var(--primary);
}

.pill-green {
  background: var(--success-soft);
  color: var(--success);
}

.pill-amber {
  background: var(--warning-soft);
  color: var(--warning);
}

.pill-gray {
  background: #e2e8f0;
  color: var(--text-secondary);
}

.folder-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px dashed var(--border-color);
  gap: 8px;
}

.folder-open-label {
  font-weight: 800;
  color: var(--primary);
  font-size: 1.02rem;
}

.folder-icon-actions {
  display: flex;
  gap: 8px;
}

.icon-btn {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: #fff;
  cursor: pointer;
  font-size: 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.icon-btn:hover {
  background: var(--bg-subtle);
}

/* ==========================================================================
   MÀN HÌNH 2: BÊN TRONG 1 THƯ MỤC ĐỢT CHẤM (3 BƯỚC RÕ RÀNG)
   ========================================================================== */
.folder-Title-banner {
  background: #ffffff;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.step-cards-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.step-card {
  background: #ffffff;
  border: 3px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s;
}

.step-card.step-ready {
  border-color: var(--primary);
}

.step-card.step-completed {
  border-color: var(--success-border);
  background: #fcfffd;
}

.step-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.step-number-badge {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: var(--primary);
  color: #fff;
  font-size: 1.4rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-card.step-completed .step-number-badge {
  background: var(--success);
}

.step-title-group {
  flex: 1;
}

.step-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.step-desc {
  font-size: 1rem;
  color: var(--text-secondary);
}

.step-summary-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 18px;
  font-size: 1rem;
}

.step-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ==========================================================================
   MÀN HÌNH 3: NẠP & QUẢN LÝ ĐA ĐÁP ÁN (NHIỀU MÃ ĐỀ)
   ========================================================================== */
.exam-tabs-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
  background: #ffffff;
  padding: 14px;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-color);
}

.exam-tab-btn {
  min-height: 54px;
  padding: 10px 22px;
  border-radius: 14px;
  border: 2px solid var(--border-color);
  background: var(--bg-subtle);
  font-size: 1.1rem;
  font-weight: 800;
  cursor: pointer;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.exam-tab-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 4px 10px rgba(29, 78, 216, 0.25);
}

.question-card {
  background: #ffffff;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}

.question-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.question-badge {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 6px 16px;
  border-radius: 10px;
}

.points-badge {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--success);
  background: var(--success-soft);
  padding: 6px 14px;
  border-radius: 10px;
}

.form-group {
  margin-bottom: 14px;
}

.form-label {
  display: block;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 1.05rem;
  font-family: inherit;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  background: #ffffff;
  color: var(--text-main);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.15);
}

/* ==========================================================================
   MÀN HÌNH 4: CHỤP HÀNG LOẠT BÀI LÀM HỌC SINH (>40 BÀI, MẶT TRƯỚC + MẶT SAU)
   ========================================================================== */
.capture-box {
  background: #ffffff;
  border: 3px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-md);
}

.capture-status-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 2px dashed var(--border-color);
}

.current-student-badge {
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--primary);
}

.side-indicator-Group {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.side-preview-card {
  flex: 1;
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  background: var(--bg-subtle);
  min-height: 220px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  position: relative;
}

.side-preview-card.has-photo {
  border-style: solid;
  border-color: var(--success);
  background: var(--success-soft);
}

.side-preview-card img {
  max-width: 100%;
  max-height: 220px;
  border-radius: 10px;
  object-fit: contain;
  border: 1px solid var(--border-color);
  background: #fff;
}

.camera-video-wrap {
  width: 100%;
  background: #0f172a;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 16px;
  position: relative;
  display: none;
}

.camera-video-wrap.active {
  display: block;
}

.camera-video-wrap video {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  display: block;
}

.submission-list-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 14px;
}

.submission-mini-card {
  background: #ffffff;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.submission-order-circle {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 900;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ==========================================================================
   MÀN HÌNH 5: TRÌNH XEM "CUỐN SÁCH BÀI ĐÃ CHẤM" (BOOK VIEWER)
   ========================================================================== */
.book-viewer-card {
  background: #ffffff;
  border: 3px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-bottom: 24px;
}

.book-top-ribbon {
  background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
  color: #ffffff;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.book-student-info h2 {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 4px;
}

.book-student-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 1rem;
  opacity: 0.95;
}

.book-score-box {
  background: #ffffff;
  color: var(--danger);
  border: 4px solid #fca5a5;
  border-radius: 18px;
  padding: 10px 22px;
  text-align: center;
  min-width: 150px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.book-score-label {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.book-score-value {
  font-size: 2.3rem;
  font-weight: 900;
  line-height: 1.1;
  color: #dc2626;
}

.book-exam-code-bar {
  background: var(--bg-subtle);
  padding: 14px 24px;
  border-bottom: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.exam-code-chip-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.exam-chip {
  padding: 8px 16px;
  border-radius: 10px;
  border: 2px solid var(--border-color);
  background: #ffffff;
  font-weight: 800;
  font-size: 1rem;
  cursor: pointer;
}

.exam-chip.active {
  background: var(--purple);
  color: #ffffff;
  border-color: var(--purple);
}

.book-body-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 0;
}

@media (max-width: 820px) {
  .book-body-grid {
    grid-template-columns: 1fr;
  }
}

.book-paper-column {
  padding: 20px;
  border-right: 2px solid var(--border-color);
  background: #f8fafc;
}

@media (max-width: 820px) {
  .book-paper-column {
    border-right: none;
    border-bottom: 2px solid var(--border-color);
  }
}

.page-side-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.page-side-tab {
  flex: 1;
  min-height: 52px;
  border-radius: 12px;
  border: 2px solid var(--border-color);
  background: #ffffff;
  font-size: 1.05rem;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.page-side-tab.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.paper-canvas-container {
  position: relative;
  background: #ffffff;
  border: 2px solid var(--border-color);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.paper-canvas-container img {
  width: 100%;
  display: block;
  height: auto;
}

.book-grading-column {
  padding: 20px;
  background: #ffffff;
}

.graded-question-item {
  border: 2px solid var(--border-color);
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 14px;
}

.graded-question-item.status-correct {
  border-color: var(--success-border);
  background: #f0fdf4;
}

.graded-question-item.status-partial {
  border-color: var(--warning-border);
  background: #fffbeb;
}

.graded-question-item.status-wrong {
  border-color: var(--danger-border);
  background: #fef2f2;
}

.graded-q-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.graded-q-title {
  font-size: 1.15rem;
  font-weight: 800;
}

.score-stepper {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #ffffff;
  padding: 4px 8px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
}

.stepper-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-subtle);
  font-size: 1.2rem;
  font-weight: 900;
  cursor: pointer;
}

.stepper-btn:hover {
  background: var(--primary-soft);
  color: var(--primary);
}

.graded-step-detail {
  font-size: 0.98rem;
  margin-top: 6px;
  padding: 8px 12px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.85);
}

.copied-check-bar {
  padding: 18px 24px;
  background: var(--bg-subtle);
  border-top: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.btn-copied-toggle {
  min-height: 62px;
  font-size: 1.2rem;
  width: 100%;
}

.btn-copied-toggle.is-copied {
  background: var(--success);
  color: #ffffff;
  border-color: var(--success);
}

/* ==========================================================================
   THANH LẬT TRANG SÁCH CỐ ĐỊNH Ở ĐÁY MÀN HÌNH (STICKY FOOTER)
   ========================================================================== */
.book-sticky-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #ffffff;
  border-top: 3px solid var(--primary);
  padding: 12px 16px;
  z-index: 95;
  box-shadow: 0 -4px 16px rgba(15, 23, 42, 0.12);
}

.book-sticky-inner {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
}

.book-page-indicator {
  text-align: center;
  padding: 6px 14px;
  background: var(--primary-soft);
  border-radius: 12px;
  font-weight: 800;
  color: var(--primary);
  font-size: 1.05rem;
}

/* ==========================================================================
   MODAL HỘP THOẠI ĐƠN GIẢN
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 200;
}

.modal-backdrop.active {
  display: flex;
}

.modal-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 540px;
  width: 100%;
  padding: 26px;
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--border-color);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-title {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.quick-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 18px;
}

.quick-chip {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  border: 1px solid var(--primary-border);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
}

.quick-chip:hover {
  background: #bfdbfe;
}

/* ==========================================================================
   TOAST THÔNG BÁO THÂN THIỆN CHO MẸ
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(92vw, 480px);
  pointer-events: none;
}

.toast-item {
  background: #0f172a;
  color: #ffffff;
  padding: 16px 20px;
  border-radius: 16px;
  font-size: 1.05rem;
  font-weight: 700;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  pointer-events: auto;
  animation: fadeIn 0.2s ease-out;
}