/* ==========================================================================
   特教材知道・皮克斯 3D 童趣風與防跑版樣式表 (Claymorphism & Responsive Engine)
   ========================================================================== */

:root {
  --pixar-bg: #FFFDF9;
  --pixar-dark: #2B2D42;
  --pixar-orange: #FF8A5B;
  --pixar-yellow: #FFD166;
  --pixar-green: #4ECDC4;
  --pixar-pink: #FF6B6B;
  --pixar-blue: #1A8FE3;
  --pixar-purple: #8338EC;
  --pixar-card-shadow: 0 10px 25px -5px rgba(43, 45, 66, 0.08), 0 8px 10px -6px rgba(43, 45, 66, 0.05);
  --pixar-clay-border: 3px solid #2B2D42;
  --pixar-clay-shadow: 0 6px 0px #2B2D42;
  --pixar-clay-shadow-sm: 0 3px 0px #2B2D42;
  --pixar-clay-shadow-hover: 0 8px 0px #2B2D42;
}

/* 全域重設與防跑版盒模型 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: 'Fredoka', 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  background-color: var(--pixar-bg);
  color: var(--pixar-dark);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* 主容器：防跑版彈性居中限制 */
.container-responsive {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

@media (min-width: 768px) {
  .container-responsive {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

/* 皮克斯 3D 浮雕按鈕 (Clay Buttons) */
.btn-clay {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 800;
  font-size: 1rem;
  border-radius: 9999px;
  border: var(--pixar-clay-border);
  box-shadow: var(--pixar-clay-shadow);
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  outline: none;
}

.btn-clay:hover {
  transform: translateY(-2px);
  box-shadow: var(--pixar-clay-shadow-hover);
}

.btn-clay:active {
  transform: translateY(4px);
  box-shadow: 0 2px 0px #2B2D42;
}

.btn-clay-orange {
  background-color: var(--pixar-orange);
  color: #FFFFFF;
}

.btn-clay-yellow {
  background-color: var(--pixar-yellow);
  color: var(--pixar-dark);
}

.btn-clay-green {
  background-color: var(--pixar-green);
  color: var(--pixar-dark);
}

.btn-clay-blue {
  background-color: var(--pixar-blue);
  color: #FFFFFF;
}

.btn-clay-white {
  background-color: #FFFFFF;
  color: var(--pixar-dark);
}

/* 3D 浮雕卡片 (Clay Cards) */
.card-clay {
  background-color: #FFFFFF;
  border: var(--pixar-clay-border);
  border-radius: 1.5rem;
  box-shadow: var(--pixar-clay-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  overflow: hidden;
}

.card-clay:hover {
  transform: translateY(-4px);
  box-shadow: var(--pixar-clay-shadow-hover);
}

/* 頂部導覽列 */
.navbar-clay {
  background: rgba(255, 253, 249, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 3px solid #2B2D42;
  position: sticky;
  top: 0;
  z-index: 50;
}

/* 心情溫度計劇場 (Mood Theater) */
.mood-theater {
  background: linear-gradient(135deg, #F3F9FF 0%, #FFF5ED 100%);
  border: 3px solid #2B2D42;
  border-radius: 2rem;
  box-shadow: 0 8px 0 #2B2D42;
}

.temp-tube {
  width: 24px;
  background-color: #E2E8F0;
  border: 3px solid #2B2D42;
  border-radius: 9999px;
  position: relative;
  overflow: hidden;
  height: 180px;
}

.temp-liquid {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  border-radius: 9999px 9999px 0 0;
  transition: height 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), background-color 0.4s ease;
}

.temp-bulb {
  width: 44px;
  height: 44px;
  border: 3px solid #2B2D42;
  border-radius: 50%;
  margin-top: -12px;
  transition: background-color 0.4s ease;
  box-shadow: inset -2px -3px 0 rgba(0, 0, 0, 0.15);
}

/* 心情精靈浮動特效 */
@keyframes floatBob {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-8px) rotate(1deg); }
}

@keyframes excitedBounce {
  0%, 100% { transform: translateY(0) scale(1); }
  30% { transform: translateY(-16px) scale(1.05); }
  60% { transform: translateY(-4px) scale(0.98); }
}

@keyframes angryShake {
  0%, 100% { transform: translate(0, 0); }
  20% { transform: translate(-3px, 2px); }
  40% { transform: translate(3px, -2px); }
  60% { transform: translate(-2px, -2px); }
  80% { transform: translate(2px, 2px); }
}

.spirit-idle { animation: floatBob 3s ease-in-out infinite; }
.spirit-excited { animation: excitedBounce 0.8s ease-in-out infinite; }
.spirit-angry { animation: angryShake 0.25s ease-in-out infinite; }

/* 粒子容器 */
.particle-container {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  border-radius: 1.5rem;
}

/* 分類篩選膠囊 */
.filter-chip {
  padding: 0.5rem 1.25rem;
  border: 2px solid #2B2D42;
  border-radius: 9999px;
  font-weight: 700;
  font-size: 0.95rem;
  background-color: #FFFFFF;
  color: var(--pixar-dark);
  box-shadow: 0 3px 0 #2B2D42;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.filter-chip:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 0 #2B2D42;
}

.filter-chip.active {
  background-color: var(--pixar-orange);
  color: #FFFFFF;
  transform: translateY(2px);
  box-shadow: 0 1px 0 #2B2D42;
}

/* 搜尋框防跑版樣式 */
.search-input-clay {
  width: 100%;
  padding: 0.875rem 1.25rem 0.875rem 3rem;
  border: 3px solid #2B2D42;
  border-radius: 9999px;
  font-size: 1rem;
  font-weight: 600;
  background-color: #FFFFFF;
  box-shadow: 0 4px 0 #2B2D42;
  outline: none;
  transition: all 0.2s ease;
}

.search-input-clay:focus {
  border-color: var(--pixar-blue);
  box-shadow: 0 6px 0 var(--pixar-blue);
}

/* 教材卡片網格 (自適應防跑版) */
.materials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .materials-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }
}

/* 教師管理浮動側欄抽屜 */
.admin-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(43, 45, 66, 0.6);
  backdrop-filter: blur(4px);
  z-index: 99;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.admin-drawer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.admin-drawer {
  position: fixed;
  top: 0;
  right: -520px;
  width: 100%;
  max-width: 500px;
  height: 100vh;
  background: #FFFDF9;
  border-left: 4px solid #2B2D42;
  box-shadow: -10px 0 30px rgba(0,0,0,0.15);
  z-index: 100;
  transition: right 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.admin-drawer.open {
  right: 0;
}