/* ========================================
   Teachers Page - Professional Library Aesthetic
   Distinctive design avoiding generic AI patterns
   ======================================== */

/* Hero Section with Site Connection */
.teachers-hero {
  position: relative;
  background:
    linear-gradient(165deg,
      rgba(248, 245, 238, 0.95) 0%,
      rgba(242, 238, 229, 0.98) 50%,
      rgba(252, 249, 243, 0.95) 100%
    );
  padding: 80px 40px 60px;
  text-align: center;
  overflow: hidden;
}

/* Atmospheric paper texture background */
.teachers-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.4;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(139, 116, 88, 0.02) 2px,
      rgba(139, 116, 88, 0.02) 4px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 2px,
      rgba(139, 116, 88, 0.015) 2px,
      rgba(139, 116, 88, 0.015) 4px
    );
  pointer-events: none;
}

/* Decorative geometric accent */
.teachers-hero::after {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(
    circle,
    rgba(66, 133, 244, 0.08) 0%,
    rgba(52, 168, 83, 0.04) 50%,
    transparent 70%
  );
  border-radius: 50%;
  pointer-events: none;
}

.teachers-hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  animation: heroFadeIn 0.8s ease-out;
}

@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Site Badge - Connection to Timeline */
.site-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  padding: 8px 20px 8px 8px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 20px;
  border: 1px solid rgba(66, 133, 244, 0.2);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.badge-timeline {
  display: flex;
  gap: 3px;
  padding: 6px;
  background: white;
  border-radius: 50%;
}

.badge-timeline::before,
.badge-timeline::after {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
}

.badge-timeline::before {
  background: var(--period-1-color);
  box-shadow:
    0 0 4px var(--period-1-color),
    6px 0 0 0 var(--period-2-color),
    6px 0 4px 0 var(--period-2-color),
    12px 0 0 0 var(--period-3-color),
    12px 0 4px 0 var(--period-3-color);
}

.badge-timeline::after {
  background: var(--period-4-color);
  box-shadow:
    0 0 4px var(--period-4-color),
    6px 0 0 0 var(--period-5-color),
    6px 0 4px 0 var(--period-5-color),
    12px 0 0 0 var(--period-6-color),
    12px 0 4px 0 var(--period-6-color);
}

.badge-text {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  letter-spacing: 0.03em;
  color: #4a4a4a;
  font-weight: 500;
}

/* Hero Typography */
.teachers-hero h1 {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: #2c2c2c;
  margin-bottom: 16px;
  line-height: 1.2;
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 400;
  color: #5a5a5a;
  line-height: 1.6;
  max-width: 600px;
  margin: 0 auto;
}

/* Main Content Area */
.teachers-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 40px 80px;
  background: linear-gradient(
    180deg,
    rgba(248, 245, 238, 0.3) 0%,
    rgba(255, 255, 255, 0) 20%
  );
}

.teachers-intro {
  max-width: 800px;
  margin: 0 auto 60px;
  text-align: center;
}

.teachers-intro p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #4a4a4a;
}

/* Resources Grid */
.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 32px;
  margin-bottom: 60px;
}

/* Resource Cards with Period Colors */
.resource-card {
  position: relative;
  display: flex;
  gap: 20px;
  padding: 28px;
  background: white;
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow:
    0 2px 8px rgba(0, 0, 0, 0.04),
    0 4px 16px rgba(0, 0, 0, 0.03);
  opacity: 0;
  transform: translateY(30px);
  animation: cardFadeIn 0.6s ease-out forwards;
  border: 1px solid rgba(0, 0, 0, 0.06);
}

/* Staggered animation delays */
.resource-card:nth-child(1) { animation-delay: 0.05s; }
.resource-card:nth-child(2) { animation-delay: 0.1s; }
.resource-card:nth-child(3) { animation-delay: 0.15s; }
.resource-card:nth-child(4) { animation-delay: 0.2s; }
.resource-card:nth-child(5) { animation-delay: 0.25s; }
.resource-card:nth-child(6) { animation-delay: 0.3s; }
.resource-card:nth-child(7) { animation-delay: 0.35s; }
.resource-card:nth-child(8) { animation-delay: 0.4s; }

@keyframes cardFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.resource-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow:
    0 8px 24px rgba(0, 0, 0, 0.08),
    0 16px 48px rgba(0, 0, 0, 0.06);
}

/* Period color accents - left border */
.resource-card[data-resource="1"]::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--period-1-color), color-mix(in srgb, var(--period-1-color) 70%, black));
  border-radius: 8px 0 0 8px;
}

.resource-card[data-resource="2"]::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--period-2-color), color-mix(in srgb, var(--period-2-color) 70%, black));
  border-radius: 8px 0 0 8px;
}

.resource-card[data-resource="3"]::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--period-3-color), color-mix(in srgb, var(--period-3-color) 70%, black));
  border-radius: 8px 0 0 8px;
}

.resource-card[data-resource="4"]::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--period-4-color), color-mix(in srgb, var(--period-4-color) 70%, black));
  border-radius: 8px 0 0 8px;
}

.resource-card[data-resource="5"]::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--period-5-color), color-mix(in srgb, var(--period-5-color) 70%, black));
  border-radius: 8px 0 0 8px;
}

.resource-card[data-resource="6"]::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--period-6-color), color-mix(in srgb, var(--period-6-color) 70%, black));
  border-radius: 8px 0 0 8px;
}

.resource-card[data-resource="7"]::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--period-7-color), color-mix(in srgb, var(--period-7-color) 70%, black));
  border-radius: 8px 0 0 8px;
}

.resource-card[data-resource="8"]::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--period-8-color), color-mix(in srgb, var(--period-8-color) 70%, black));
  border-radius: 8px 0 0 8px;
}

/* Resource Icon Container */
.resource-icon {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(248, 248, 248, 0.6);
  border-radius: 6px;
  transition: all 0.3s ease;
}

.resource-card:hover .resource-icon {
  background: rgba(248, 248, 248, 1);
  transform: scale(1.05);
}

/* Document Preview Icons - CSS-only stylized representations */
.doc-preview {
  width: 48px;
  height: 56px;
  background: white;
  border: 2px solid #d0d0d0;
  border-radius: 3px;
  position: relative;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.resource-card:hover .doc-preview {
  border-color: #b0b0b0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Period Summaries - List representation */
.doc-list::before,
.doc-list::after {
  content: '';
  position: absolute;
  left: 8px;
  right: 8px;
  height: 2px;
  background: linear-gradient(90deg, var(--period-1-color) 0%, rgba(66, 133, 244, 0.2) 100%);
}

.doc-list::before {
  top: 12px;
  box-shadow:
    0 6px 0 0 rgba(66, 133, 244, 0.6),
    0 12px 0 0 rgba(66, 133, 244, 0.4),
    0 18px 0 0 rgba(66, 133, 244, 0.3),
    0 24px 0 0 rgba(66, 133, 244, 0.2);
}

/* Quick Start Grade 8 - Simple path */
.doc-path::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--period-2-color);
  box-shadow:
    12px 10px 0 0 var(--period-2-color),
    6px 20px 0 0 var(--period-2-color),
    18px 30px 0 0 var(--period-2-color);
}

.doc-path::after {
  content: '';
  position: absolute;
  top: 14px;
  left: 16px;
  width: 12px;
  height: 2px;
  background: rgba(52, 168, 83, 0.3);
  transform: rotate(45deg);
  box-shadow:
    0 14px 0 0 rgba(52, 168, 83, 0.3),
    10px 22px 0 0 rgba(52, 168, 83, 0.3);
}

/* Quick Start 9-10 - Branching path */
.doc-path-alt::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 20px;
  background: linear-gradient(180deg, var(--period-3-color), rgba(251, 188, 4, 0.4));
}

.doc-path-alt::after {
  content: '';
  position: absolute;
  top: 32px;
  left: 12px;
  width: 12px;
  height: 2px;
  background: rgba(251, 188, 4, 0.6);
  transform: rotate(-30deg);
  box-shadow:
    12px 0 0 0 rgba(251, 188, 4, 0.6);
}

/* Quick Start 11-12 - Complex network */
.doc-path-complex::before {
  content: '';
  position: absolute;
  top: 15px;
  left: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--period-4-color);
  box-shadow:
    14px 0 0 0 var(--period-4-color),
    7px 12px 0 0 var(--period-4-color),
    21px 12px 0 0 var(--period-4-color),
    14px 24px 0 0 var(--period-4-color);
}

.doc-path-complex::after {
  content: '';
  position: absolute;
  top: 18px;
  left: 13px;
  width: 14px;
  height: 1px;
  background: rgba(234, 67, 53, 0.3);
  box-shadow:
    -3px 12px 0 0 rgba(234, 67, 53, 0.3),
    11px 12px 0 0 rgba(234, 67, 53, 0.3),
    -7px 24px 0 0 rgba(234, 67, 53, 0.3),
    7px 24px 0 0 rgba(234, 67, 53, 0.3);
}

/* Discussion Guide - Speech bubbles */
.doc-discussion::before {
  content: '?';
  position: absolute;
  top: 12px;
  left: 14px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(156, 39, 176, 0.15);
  color: var(--period-5-color);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 18px 0 0 rgba(156, 39, 176, 0.1);
}

.doc-discussion::after {
  content: '?';
  position: absolute;
  top: 12px;
  right: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(156, 39, 176, 0.1);
  color: var(--period-5-color);
  font-size: 8px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Core Activities - Interconnected shapes */
.doc-activities::before {
  content: '';
  position: absolute;
  top: 16px;
  left: 12px;
  width: 12px;
  height: 12px;
  border: 2px solid var(--period-6-color);
  border-radius: 2px;
  background: rgba(0, 188, 212, 0.1);
}

.doc-activities::after {
  content: '';
  position: absolute;
  top: 30px;
  right: 12px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--period-6-color);
  background: rgba(0, 188, 212, 0.1);
  box-shadow:
    -12px -8px 0 0 rgba(0, 188, 212, 0.3),
    -12px -8px 0 2px var(--period-6-color);
}

/* General Tips - Star/lightbulb pattern */
.doc-tips::before {
  content: '★';
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--period-7-color);
  font-size: 20px;
  opacity: 0.8;
}

.doc-tips::after {
  content: '·';
  position: absolute;
  bottom: 12px;
  left: 12px;
  color: var(--period-7-color);
  font-size: 24px;
  opacity: 0.4;
  letter-spacing: 6px;
}

/* Sensitive Content - Shield/protection */
.doc-sensitive::before {
  content: '';
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 24px;
  border: 2px solid var(--period-8-color);
  border-radius: 10px 10px 6px 6px;
  background: rgba(233, 30, 99, 0.08);
}

.doc-sensitive::after {
  content: '';
  position: absolute;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  background: var(--period-8-color);
  border-radius: 1px;
  opacity: 0.6;
}

/* Resource Content */
.resource-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.resource-content h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 600;
  color: #2c2c2c;
  margin-bottom: 8px;
  line-height: 1.3;
}

.resource-content p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.6;
  color: #666;
  margin-bottom: 12px;
  flex: 1;
}

.resource-link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: #4285f4;
  transition: all 0.2s ease;
}

.resource-card:hover .resource-link {
  color: #3367d6;
  transform: translateX(4px);
  display: inline-block;
}

/* Return Navigation */
.return-navigation {
  text-align: center;
  padding-top: 40px;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.btn-return {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: white;
  color: #4285f4;
  text-decoration: none;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid #4285f4;
  border-radius: 6px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(66, 133, 244, 0.15);
}

.btn-return:hover {
  background: #4285f4;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(66, 133, 244, 0.3);
}

.return-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

.btn-return:hover .return-icon {
  transform: translateX(-4px);
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1024px) {
  .resources-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
  }
}

@media (max-width: 768px) {
  .teachers-hero {
    padding: 60px 24px 40px;
  }

  .teachers-hero h1 {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .teachers-main {
    padding: 40px 24px 60px;
  }

  .resources-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .resource-card {
    padding: 24px;
  }

  .resource-icon {
    width: 70px;
    height: 70px;
  }

  .doc-preview {
    width: 42px;
    height: 50px;
  }

  .resource-content h2 {
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .teachers-hero h1 {
    font-size: 2rem;
  }

  .badge-text {
    font-size: 0.8rem;
  }

  .resource-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .resource-icon {
    width: 100%;
    height: 100px;
  }
}