/* assets/classroom.css - Styles for Paper Fortune Teller Classroom Activities */
.classroom-page {
  --class-blue: #1765b5;
  --class-red: #e64a2f;
  --class-yellow: #dba11e;
  --class-green: #66824e;
  --class-bg: #fffaf1;
  --class-card-border: #cec7bb;
  --class-mat: #dcecf2;
}

.classroom-page [hidden] { display: none !important; }

/* Header adjustments */
.classroom-page .site-header {
  grid-template-columns: 1fr auto;
  height: 68px;
  padding: 0 max(24px, calc((100vw - 1280px) / 2));
  gap: 28px;
}
.classroom-page .site-header nav {
  display: flex;
  gap: 28px;
}
.classroom-page .site-header nav a[aria-current="page"] {
  color: var(--class-blue);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 6px;
}

/* Main Container */
.classroom-main {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px 60px;
}

/* Hero Section */
.classroom-hero {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  align-items: center;
  gap: 36px;
  padding: 36px 0 28px;
  border-bottom: 1px solid var(--line);
}
.classroom-hero h1 {
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 650;
  line-height: 1.1;
  margin: 8px 0 16px;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.classroom-hero-lede {
  font-size: clamp(16px, 1.8vw, 19px);
  line-height: 1.55;
  color: #344957;
  margin: 0 0 20px;
  max-width: 680px;
}
.classroom-meta-notice {
  font-size: 13.5px;
  line-height: 1.5;
  color: #556777;
  background: #f1ebd9;
  padding: 8px 14px;
  border-radius: 6px;
  display: inline-block;
}
.classroom-hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--class-mat);
  background-image: repeating-linear-gradient(0deg, rgba(255,255,255,.6) 0 1px, transparent 1px 20px),
                    repeating-linear-gradient(90deg, rgba(255,255,255,.6) 0 1px, transparent 1px 20px);
  border: 1px solid #bad2dc;
  border-radius: 12px;
  padding: 24px 18px;
  box-shadow: inset 0 0 18px rgba(0,0,0,.04), 0 4px 12px rgba(40,49,48,.08);
  text-align: center;
}
.classroom-hero-visual img {
  max-width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 12px rgba(35,50,60,.2));
}
.classroom-hero-visual figcaption {
  margin-top: 12px;
  font-size: 13px;
  font-weight: 600;
  color: #3b5060;
}

/* Filter Bar */
.filter-section {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.filter-card {
  background: var(--class-bg);
  border: 1px solid var(--class-card-border);
  border-radius: 10px;
  padding: 20px 24px;
  box-shadow: 0 3px 0 rgba(91,72,43,.1);
}
.filter-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}
.filter-heading h2 {
  font-family: "Fraunces", Georgia, serif;
  font-size: 22px;
  margin: 0;
  color: var(--ink);
}
.filter-status {
  font-size: 14px;
  font-weight: 600;
  color: var(--class-blue);
  margin: 0;
}
.filters-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.filter-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.filter-group label {
  font-size: 13px;
  font-weight: 700;
  color: #384a58;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.filter-group select {
  min-height: 44px;
  padding: 8px 12px;
  font: 500 15px Aptos, "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: #fff;
  border: 1px solid #b8b1a4;
  border-radius: 6px;
  cursor: pointer;
  box-shadow: inset 0 1px 2px rgba(0,0,0,.06);
}
.filter-group select:focus-visible {
  outline: 3px solid var(--class-yellow);
  border-color: var(--class-blue);
}
.filter-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 14px;
}
.reset-filters-btn {
  background: transparent;
  border: 1px solid #9aa6b2;
  color: #3b5062;
  font-size: 13.5px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  transition: all .15s ease;
}
.reset-filters-btn:hover {
  background: #fff;
  border-color: var(--class-blue);
  color: var(--class-blue);
}

/* Empty State */
.empty-cards {
  background: var(--class-bg);
  border: 1px dashed var(--line);
  border-radius: 10px;
  padding: 48px 24px;
  text-align: center;
  margin: 32px 0;
}
.empty-cards h3 {
  font-family: "Fraunces", Georgia, serif;
  font-size: 24px;
  margin: 0 0 10px;
  color: var(--ink);
}
.empty-cards p {
  font-size: 15px;
  color: #556777;
  max-width: 480px;
  margin: 0 auto 18px;
}

/* Lesson Cards Container */
.cards-container {
  display: grid;
  gap: 32px;
  padding: 36px 0;
}

/* Individual Lesson Card */
.lesson-card {
  background: var(--class-bg);
  border: 1px solid var(--class-card-border);
  border-radius: 12px;
  padding: 28px;
  box-shadow: 0 3px 0 rgba(91,72,43,.12), 0 8px 20px rgba(40,49,48,.07);
  display: flex;
  flex-direction: column;
  gap: 22px;
  border-left: 6px solid var(--class-blue);
}
.lesson-card[data-subject="math"] { border-left-color: var(--class-blue); }
.lesson-card[data-subject="reading"] { border-left-color: var(--class-red); }
.lesson-card[data-subject="language"] { border-left-color: var(--class-yellow); }
.lesson-card[data-subject="sel"] { border-left-color: var(--class-green); }
.lesson-card[data-subject="science"] { border-left-color: #2a8b94; }

.card-header-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 14px;
}
.card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 4px;
  background: #ede6d8;
  color: #2d3e4d;
}
.badge-grade { background: #e3edf7; color: #104a84; font-weight: 800; }
.badge-time { background: #faede6; color: #a43823; }
.badge-format { background: #eaf3e4; color: #3b5f25; }

.lesson-card h3 {
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(24px, 2.6vw, 32px);
  margin: 4px 0 0;
  color: var(--ink);
  line-height: 1.2;
}

/* Card Sections / Fields */
.card-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  background: #f7f1e4;
  border: 1px solid #dfd7c8;
  border-radius: 8px;
  padding: 16px 20px;
}
.meta-item h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #657482;
  margin: 0 0 4px;
}
.meta-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.5;
  color: #243542;
  font-weight: 500;
}

/* 8 Prompts Section */
.card-prompts-section {
  background: var(--class-mat);
  background-image: repeating-linear-gradient(0deg, rgba(255,255,255,.5) 0 1px, transparent 1px 16px),
                    repeating-linear-gradient(90deg, rgba(255,255,255,.5) 0 1px, transparent 1px 16px);
  border: 1px solid #bad2dc;
  border-radius: 8px;
  padding: 20px;
}
.card-prompts-section h4 {
  font-family: "Fraunces", Georgia, serif;
  font-size: 18px;
  margin: 0 0 14px;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-prompts-section h4 span {
  font-family: Aptos, "Segoe UI", sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: #4b6272;
}
.prompts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 14px;
}
.prompt-cell {
  background: #fffdfa;
  border: 1px solid #cbd7de;
  border-radius: 6px;
  padding: 10px 12px;
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 8px;
  align-items: start;
}
.prompt-num {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 4px;
  background: var(--class-blue);
  color: #fff;
  font-size: 12px;
  font-weight: 750;
}
.prompt-content strong {
  display: block;
  font-size: 13.5px;
  color: var(--ink);
  margin-bottom: 2px;
}
.prompt-content span {
  display: block;
  font-size: 12.5px;
  color: #485c6c;
  line-height: 1.35;
}

/* Detailed Procedure Fields */
.card-details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.detail-box {
  background: #fffefb;
  border: 1px solid #ded6c9;
  border-radius: 8px;
  padding: 18px 20px;
}
.detail-box h4 {
  font-family: "Fraunces", Georgia, serif;
  font-size: 17px;
  margin: 0 0 8px;
  color: var(--ink);
}
.detail-box p, .detail-box li {
  font-size: 14px;
  line-height: 1.55;
  color: #31424f;
  margin: 0;
}
.detail-box ol, .detail-box ul {
  padding-left: 20px;
  margin: 8px 0 0;
}
.detail-box li {
  margin-bottom: 6px;
}
.diff-support { color: #1e5287; }
.diff-challenge { color: #8a3f12; }

/* Card Actions */
.card-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}
.load-card-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--class-blue);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  padding: 12px 22px;
  border-radius: 6px;
  border: 1px solid #114e8a;
  cursor: pointer;
  box-shadow: 0 3px 0 #0d4276;
  transition: background .15s ease;
}
.load-card-btn:hover {
  background: #115394;
}
.copy-card-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  color: #274057;
  font-size: 14px;
  font-weight: 650;
  padding: 11px 18px;
  border-radius: 6px;
  border: 1px solid #b3a99a;
  cursor: pointer;
  transition: all .15s ease;
}
.copy-card-btn:hover {
  border-color: var(--class-blue);
  color: var(--class-blue);
}
.card-guide-link {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--class-blue);
  text-decoration: underline;
  margin-left: auto;
}

/* Live Toast / Status Bar */
.classroom-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #122638;
  color: #fff;
  padding: 14px 20px;
  border-radius: 8px;
  font-size: 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  z-index: 100;
  max-width: 420px;
  animation: toast-fade 250ms ease-out;
}
.classroom-toast[data-error="true"] {
  background: #a82e20;
}
@keyframes toast-fade {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Manual Copy Fallback Modal */
.copy-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(18, 38, 56, 0.6);
  display: grid;
  place-items: center;
  z-index: 150;
  padding: 20px;
}
.copy-modal {
  background: #fffaf1;
  border: 1px solid #cec7bb;
  border-radius: 12px;
  max-width: 620px;
  width: 100%;
  padding: 28px;
  box-shadow: 0 12px 36px rgba(0,0,0,0.3);
}
.copy-modal h3 {
  font-family: "Fraunces", Georgia, serif;
  font-size: 22px;
  margin: 0 0 10px;
  color: var(--ink);
}
.copy-modal p {
  font-size: 14px;
  line-height: 1.5;
  color: #3b4d5c;
  margin: 0 0 14px;
}
.copy-modal textarea {
  width: 100%;
  height: 160px;
  font: 13.5px/1.5 monospace;
  padding: 10px;
  border: 1px solid #b8b1a4;
  border-radius: 6px;
  background: #fff;
  color: #122638;
  margin-bottom: 16px;
  resize: vertical;
}
.copy-modal-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.copy-modal-actions a {
  font-weight: 700;
  color: var(--class-blue);
}
.copy-modal-close {
  background: #fff;
  border: 1px solid #9aa6b2;
  padding: 8px 16px;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
}

/* Educational Sources & Citations */
.sources-section {
  padding: 44px 0;
  border-top: 1px solid var(--line);
}
.sources-section h2 {
  font-family: "Fraunces", Georgia, serif;
  font-size: 28px;
  margin: 6px 0 14px;
}
.sources-card {
  background: var(--class-bg);
  border: 1px solid var(--class-card-border);
  border-radius: 10px;
  padding: 24px;
  box-shadow: 0 3px 0 rgba(91,72,43,.08);
}
.sources-card p {
  font-size: 14.5px;
  line-height: 1.6;
  color: #334452;
  margin: 0 0 14px;
}
.sources-list {
  list-style: none;
  padding: 0;
  margin: 16px 0;
  display: grid;
  gap: 10px;
}
.sources-list li {
  font-size: 13.5px;
  line-height: 1.5;
  color: #4b5d6e;
  padding-left: 20px;
  position: relative;
}
.sources-list li::before {
  content: "•";
  position: absolute;
  left: 6px;
  color: var(--class-blue);
  font-weight: bold;
}
.sources-list a {
  color: var(--class-blue);
  text-decoration: underline;
}
.sources-disclaimer {
  font-size: 12.5px;
  line-height: 1.5;
  color: #6a7c8c;
  margin-top: 14px;
  font-style: italic;
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}

/* Classroom FAQ Section */
.classroom-faq-section {
  padding: 44px 0;
  border-top: 1px solid var(--line);
}
.classroom-faq-section h2 {
  font-family: "Fraunces", Georgia, serif;
  font-size: 28px;
  margin: 6px 0 20px;
}
.faq-grid {
  display: grid;
  gap: 12px;
}
.faq-grid details {
  background: var(--class-bg);
  border: 1px solid var(--class-card-border);
  border-radius: 8px;
  padding: 18px 22px;
  box-shadow: 0 2px 0 rgba(91,72,43,.06);
}
.faq-grid summary {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  line-height: 1.35;
}
.faq-grid p {
  font-size: 14.5px;
  line-height: 1.6;
  color: #3b4d5c;
  margin: 12px 0 0;
}

/* Responsive */
@media (max-width: 1020px) {
  .classroom-hero {
    grid-template-columns: 1fr;
  }
  .classroom-hero-visual {
    max-width: 400px;
    margin: 0 auto;
  }
  .filters-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .card-meta-grid {
    grid-template-columns: 1fr;
  }
  .card-details-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .classroom-page .site-header {
    height: auto;
    min-height: 60px;
    padding: 12px 16px;
  }
  .classroom-page .site-header nav {
    display: none;
  }
  .classroom-page.menu-open .site-header nav {
    display: grid;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    padding: 16px 20px;
    gap: 0;
    background: #fffaf1;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 10px 20px rgba(27,35,32,.12);
  }
  .classroom-page.menu-open .site-header nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
  }
  .classroom-main {
    padding: 0 16px 40px;
  }
  .filters-grid {
    grid-template-columns: 1fr;
  }
  .prompts-grid {
    grid-template-columns: 1fr;
  }
  .card-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .load-card-btn, .copy-card-btn {
    width: 100%;
    justify-content: center;
  }
  .card-guide-link {
    margin-left: 0;
    text-align: center;
    padding-top: 6px;
  }
}

@media (max-width: 420px) {
  body { overflow-x: hidden; }
  .classroom-page .site-header { padding: 8px 10px; }
  .classroom-page .brand { font-size: 14px; gap: 6px; }
  .classroom-page .brand-art { width: 32px; }
  .classroom-page .brand span:last-child { font-size: 14px; }
  .classroom-main { padding: 0 10px 40px; }
  .classroom-hero h1 { font-size: 25px; }
  .filter-card { padding: 14px 10px; }
  .lesson-card { padding: 16px 10px; }
  .lesson-card h3 { font-size: 20px; }
  .card-prompts-section { padding: 12px 8px; }
  .prompt-cell { padding: 8px 6px; gap: 6px; }
  .card-meta-grid { padding: 12px 10px; }
  .detail-box { padding: 12px 10px; }
  .sources-card { padding: 16px 12px; }
  .faq-grid details { padding: 14px 12px; }
  .classroom-page footer { padding: 20px 10px; }
  .classroom-page footer nav { flex-wrap: wrap; gap: 8px 14px; }
}

/* Accessible focus ring */
.classroom-page :focus-visible {
  outline: 3px solid #e0a61d;
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}