/* Global Styles for AI Evaluation: Manus */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-blue: #0066FF;
  --secondary-teal: #00A699;
  --dark-bg: #0F172A;
  --light-bg: #FFFFFF;
  --slate-50: #F8FAFC;
  --slate-100: #F1F5F9;
  --slate-200: #E2E8F0;
  --slate-300: #CBD5E1;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-900: #0F172A;
  --accent-blue: #3B82F6;
  --accent-cyan: #06B6D4;
  --accent-teal: #14B8A6;
  --accent-emerald: #10B981;
  --accent-indigo: #6366F1;
  --accent-purple: #A855F7;
  --accent-orange: #F97316;
  --accent-green: #22C55E;
  --accent-rose: #F43F5E;
  --bobo-blue: #76caec;
  --riri-green: #93C59A;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(180deg, #F8FAFC 0%, #EEF2FF 55%, #F5F3FF 100%);
  color: var(--slate-900);
  line-height: 1.6;
  min-height: 100vh;
}

/* Typography */
h1 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 1rem;
  line-height: 1.2;
}

h2 {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--slate-900);
  margin-bottom: 0.5rem;
}

p {
  color: var(--slate-700);
  margin-bottom: 1rem;
}

/* Navigation */
nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(248, 250, 252, 0.9);
  border-bottom: 1px solid rgba(148, 163, 184, 0.25);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(12px);
}

nav .container {
  max-width: 80rem;
  margin: 0 auto;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

nav .logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate-900);
  text-decoration: none;
}

nav .logo:hover {
  color: var(--accent-indigo);
}

nav .nav-links {
  display: flex;
  gap: 0.5rem;
  list-style: none;
}

nav a {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--slate-700);
  text-decoration: none;
  padding: 0.55rem 1.1rem;
  border-radius: 0.75rem;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

nav a:hover {
  color: var(--slate-900);
  background: linear-gradient(135deg, rgba(191, 219, 254, 0.6), rgba(224, 231, 255, 0.6));
}

/* Footer */
footer {
  position: relative;
  background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.12), transparent 55%), radial-gradient(circle at top right, rgba(139, 92, 246, 0.12), transparent 55%), linear-gradient(135deg, #0f172a, #1e293b 60%, #0b1120);
  color: #E2E8F0;
  padding: 3rem 1rem;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
}

footer .container {
  max-width: 80rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.container1 {
  max-width: 80rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}


@media (min-width: 768px) {
  footer .container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

footer p {
  color: #CBD5E1;
  font-size: 0.9rem;
  margin-bottom: 0;
}

footer .footer-links {
  display: flex;
  gap: 1rem;
  list-style: none;
}

footer a {
  font-size: 0.9rem;
  color: #E2E8F0;
  text-decoration: none;
  transition: color 0.2s ease;
}

footer a:hover {
  color: #ffffff;
}

/* Main Layout */
main {
  flex: 1;
}

.container {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header Section */
header {
  position: relative;
  padding: 6rem 0 4.75rem;
  border-bottom: none;
  background: radial-gradient(circle at 10% 10%, rgba(129, 140, 248, 0.18), transparent 65%), radial-gradient(circle at 85% 15%, rgba(244, 114, 182, 0.15), transparent 60%), linear-gradient(to bottom, rgba(248, 250, 252, 0.95), rgba(255, 255, 255, 0.65));
  overflow: hidden;
}

header::before,
header::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(0);
  opacity: 0.55;
}

header::before {
  width: 32rem;
  height: 32rem;
  top: -18rem;
  left: -10rem;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.35), transparent 70%);
}

header::after {
  width: 28rem;
  height: 28rem;
  bottom: -15rem;
  right: -12rem;
  background: radial-gradient(circle, rgba(244, 114, 182, 0.28), transparent 70%);
}

header .container {
  text-align: center;
  max-width: 60rem;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  position: relative;
  z-index: 1;
}

header h1 {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--slate-900);
}

header h2 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  color: var(--slate-700);
  max-width: 45rem;
}

header .credits {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.9rem;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.18);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-indigo);
}

.hero-subtitle {
  font-weight: 500;
  color: var(--slate-700);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.22);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-indigo);
}

.hero-description {
  max-width: 48rem;
  font-size: 1.05rem;
  color: var(--slate-700);
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 2.5rem;
  max-width: 45rem;
}

.section-header.centered {
  align-items: center;
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(14, 165, 233, 0.2);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #0f766e;
}

.section-lead {
  font-size: 1rem;
  color: var(--slate-700);
}

.page-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Sections */
section {
  padding: clamp(3.5rem, 5vw, 5rem) 1rem;
  position: relative;
}

section.light-bg {
  background: linear-gradient(180deg, rgba(226, 232, 240, 0.5), rgba(248, 250, 252, 0.7));
  border-top: 1px solid rgba(148, 163, 184, 0.18);
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

/* Cards */
.card,
.card-riri,
.card-bobo {
  position: relative;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.96), rgba(237, 242, 255, 0.92));
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 1.25rem;
  padding: 2rem;
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.08);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  overflow: hidden;
}

.card::after,
.card-riri::after,
.card-bobo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.2), transparent 65%);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.card:hover,
.card-riri:hover,
.card-bobo:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 56px rgba(15, 23, 42, 0.12);
}

.card:hover::after,
.card-riri:hover::after,
.card-bobo:hover::after {
  opacity: 1;
}

.card-riri {
  border-color: rgba(255, 255, 255, 0.22);
}

.card-bobo {
  border-color: rgba(59, 130, 246, 0.22);
}

.card-header-riri {
  background: linear-gradient(135deg, rgba(228, 250, 228, 0.9), var(--riri-green));
  padding: 1.2rem 2rem;
  margin: -2rem -2rem 1.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 1.25rem 1.25rem 0 0;
}

.card-header-bobo {
  background: linear-gradient(135deg, rgba(219, 234, 254, 0.95), rgba(96, 165, 250, 0.95));
  padding: 1.2rem 2rem;
  margin: -2rem -2rem 1.75rem;
  border-bottom: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 1.25rem 1.25rem 0 0;
}

.card-header h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate-900);
}

/* Two Column Layout */
.two-column {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: stretch;
}

@media (min-width: 960px) {
  .two-column {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
}

.card-tall {
  max-height: 600px;
  display: flex;
  flex-direction: column;
}

.card-content {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.insight-card {
  text-align: center;
  align-items: stretch;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.insight-card p {
  max-width: 40rem;
  color: var(--slate-700);
  margin-left: auto;
  margin-right: auto;
}

.card-actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 1rem;
  width: 100%;
}

.comment-card {
  padding: 2rem;
}

.comment-embed {
  width: 100%;
  min-height: 320px;
}

.button-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  width: 100%;
}

.button-list > * {
  width: 100%;
}

/* Buttons */
button, .btn, a.btn {
  position: relative;
  padding: 0.9rem 1.6rem;
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 0.85rem;
  background: linear-gradient(135deg, #e0f2fe, #f8fafc);
  color: var(--slate-900);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  min-height: 3.5rem;
  box-shadow: 0 10px 22px rgba(14, 116, 144, 0.14);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.btn1 {
  position: relative;
  padding: 1rem 1.9rem;
  border: 1px solid transparent;
  border-radius: 0.85rem;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: white;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 3.5rem;
  box-shadow: 0 14px 28px rgba(99, 102, 241, 0.28);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn1::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(255, 255, 255, 0.45), transparent 60%);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.btn1::after {
  content: "↗";
  font-size: 0.95rem;
  line-height: 1;
  transition: transform 0.2s ease;
}

.btn1:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 32px rgba(99, 102, 241, 0.36);
}

.btn1:hover::before {
  opacity: 1;
}

.btn1:hover::after {
  transform: translate(4px, -4px);
}

.btn1:active {
  transform: translateY(0);
  box-shadow: 0 10px 20px rgba(99, 102, 241, 0.24);
}

.btn1:focus-visible {
  outline: 3px solid rgba(99, 102, 241, 0.35);
  outline-offset: 3px;
}

button:hover, .btn:hover, a.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(14, 116, 144, 0.18);
  border-color: rgba(14, 116, 144, 0.35);
  background: linear-gradient(135deg, #dbeafe, #e0f2fe);
}

button:active, .btn:active, a.btn:active {
  transform: translateY(0);
  box-shadow: 0 8px 16px rgba(14, 116, 144, 0.16);
}

button:focus-visible, .btn:focus-visible, a.btn:focus-visible {
  outline: 3px solid rgba(14, 116, 144, 0.28);
  outline-offset: 3px;
}

.btn-primary {
  position: relative;
  padding: 0.9rem 1.85rem;
  border: 1px solid transparent;
  border-radius: 0.85rem;
  background: linear-gradient(135deg, #bfdbfe, #60a5fa);
  color: #0f172a;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  min-height: 3.5rem;
  box-shadow: 0 12px 22px rgba(96, 165, 250, 0.28);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn-primary::before {
  content: "";
  position: absolute;
  inset: -40% -40%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.55), transparent 55%);
  transform: rotate(12deg) translateY(40%);
  transition: transform 0.4s ease, opacity 0.4s ease;
  opacity: 0.75;
}

.btn-primary::after {
  content: "↗";
  font-size: 1rem;
  line-height: 1;
  color: #1d4ed8;
  transition: transform 0.25s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 28px rgba(96, 165, 250, 0.33);
}

.btn-primary:hover::before {
  transform: rotate(12deg) translateY(0);
}

.btn-primary:hover::after {
  transform: translate(4px, -4px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 8px 16px rgba(96, 165, 250, 0.24);
}

.btn-primary:focus-visible {
  outline: 3px solid rgba(147, 197, 253, 0.75);
  outline-offset: 3px;
}

.btn-secondary {
  background-color: var(--secondary-teal);
  color: white;
  border-color: var(--secondary-teal);
}

.btn-secondary:hover {
  background-color: #008B7F;
  border-color: #008B7F;
}

.btn-disabled {
  background: var(--slate-200);
  color: var(--slate-600);
  box-shadow: none;
  transform: none;
  opacity: 0.9;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-disabled:hover {
  background: var(--slate-200);
  border-color: var(--slate-200);
  box-shadow: none;
  transform: none;
}

/* Grid Layouts */
.grid-5 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .grid-5 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .grid-5 {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.grid-card {
  position: relative;
  background: linear-gradient(150deg, rgba(238, 242, 255, 0.95), rgba(248, 250, 252, 0.95));
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 1.15rem;
  padding: 2.25rem;
  text-align: center;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  min-height: 8.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--slate-900);
  box-shadow: 0 20px 44px rgba(15, 23, 42, 0.08);
  overflow: hidden;
}

.grid-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.35), transparent 70%);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.grid-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 28px 56px rgba(15, 23, 42, 0.12);
  border-color: rgba(99, 102, 241, 0.35);
}

.grid-card:hover::after {
  opacity: 1;
}

.grid-card.pedagogical {
  background: linear-gradient(145deg, rgba(253, 226, 230, 0.95), rgba(244, 208, 237, 0.95));
  border-color: rgba(249, 168, 212, 0.6);
}

.grid-card.technical {
  background: linear-gradient(145deg, rgba(245, 205, 240, 0.95), rgba(226, 190, 255, 0.95));
  border-color: rgba(215, 170, 248, 0.6);
}

.grid-card.critical {
  background: linear-gradient(145deg, rgba(237, 189, 242, 0.95), rgba(209, 176, 250, 0.95));
  border-color: rgba(193, 148, 242, 0.6);
}

.grid-card.ethical {
  background: linear-gradient(145deg, rgba(228, 186, 244, 0.95), rgba(193, 174, 247, 0.95));
  border-color: rgba(172, 143, 236, 0.6);
}

.grid-card.metacognitive {
  background: linear-gradient(145deg, rgba(222, 188, 244, 0.95), rgba(187, 176, 247, 0.95));
  border-color: rgba(165, 142, 236, 0.6);
}

/* Evaluation Checklist */
.checklist {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: 0.5rem;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.checklist h3 {
  margin-bottom: 1rem;
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  cursor: pointer;
}

.checklist-item input[type="checkbox"] {
  width: 1.25rem;
  height: 1.25rem;
  cursor: pointer;
}

.checklist-item label {
  cursor: pointer;
  color: var(--slate-700);
}

/* Forum Placeholder */
.forum-placeholder {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: 0.5rem;
  padding: 1.5rem;
  color: var(--slate-600);
  font-size: 0.875rem;
  margin: 1.5rem 0;
}

/* Back Button Section */
.back-section {
  padding: 2rem 1rem;
  background-color: var(--slate-50);
  border-top: 1px solid var(--slate-200);
}

.back-btn {
  background-color: var(--light-bg);
  border: 1px solid var(--slate-200);
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  color: var(--slate-900);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
  display: inline-block;
}

.back-btn:hover {
  background-color: var(--slate-100);
  border-color: var(--slate-300);
}

/* Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 1.875rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  section {
    padding: 2rem 1rem;
  }

  nav .nav-links {
    gap: 0.25rem;
  }

  nav a {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
  }
}

/* Print Styles */
@media print {
  nav, footer {
    display: none;
  }

}

/* Image Container - each figure width 30%*/
.image-container-width30 {
    /* 1. 核心：启用 Flex 布局，使子元素并排 */
    display: flex; 
    
    /* 2. 可选：确保所有子元素都在一行，不换行 */
    flex-wrap: nowrap; 
    
    /* 3. 可选：在容器内居中图片组 */
    justify-content: center; 
    
    /* 4. 可选：给图片组与上下元素留出间距 */
    margin: 20px 0;
}

.image-container-width30 img {
    /* 1. 核心：让每张图片自动占据可用空间 */
    flex-grow: 1; 
    
    /* 2. 核心：设置最大宽度（例如：每张图片最多占 50% 减去间距）*/
    max-width: 30%; 
    
    /* 3. 保持图片比例 */
    height: auto; 
    
    /* 4. 给图片之间留出间距 */
    margin: 0 3%; 
    
    /* 5. 可选：设置圆角或边框 */
    border-radius: 0.5rem; 
}

/* Image Container - each figure width 45%*/
.image-container-width45 {
    /* 1. 核心：启用 Flex 布局，使子元素并排 */
    display: flex; 
    
    /* 2. 可选：确保所有子元素都在一行，不换行 */
    flex-wrap: nowrap; 
    
    /* 3. 可选：在容器内居中图片组 */
    justify-content: center; 
    
    /* 4. 可选：给图片组与上下元素留出间距 */
    margin: 20px 0;
}

.image-container-width45 img {
    /* 1. 核心：让每张图片自动占据可用空间 */
    flex-grow: 1; 
    
    /* 2. 核心：设置最大宽度（例如：每张图片最多占 50% 减去间距）*/
    max-width: 45%; 
    
    /* 3. 保持图片比例 */
    height: auto; 
    
    /* 4. 给图片之间留出间距 */
    margin: 0 3%; 
    
    /* 5. 可选：设置圆角或边框 */
    border-radius: 0.5rem; 
}

.justify-text {
    /* 核心代码：设置两端对齐 */
    text-align: justify; 
    
    /* 可选：为了让两端对齐效果更自然，可以设置一个固定的行高 */
    line-height: 1.6; 
}

.button-row {
    /* 1. 核心：启用 Flexbox 布局 */
    display: flex;
    
    /* 2. (可选) 设置水平对齐方式 */
    justify-content: center;  /* 居中对齐 */
    /* justify-content: flex-start; */ /* 左对齐（默认） */
    
    /* 3. (可选) 设置按钮之间的间距 */
    gap: 1rem;  /* (推荐) 1rem = 16px 的间距 */
    
    /* 4. (可选) 确保它们在小屏幕上也能正常显示 */
    flex-wrap: wrap; 
}