/* ===== 全局重置 & 变量 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #6c5ce7;
  --primary-dark: #5a4bd1;
  --primary-light: #a29bfe;
  --bg: #f8f9fe;
  --card-bg: #ffffff;
  --text: #2d3436;
  --text-light: #636e72;
  --shadow: 0 8px 24px rgba(108, 92, 231, 0.10);
  --radius: 20px;
  --radius-sm: 12px;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== 导航栏 ===== */
.navbar {
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(108, 92, 231, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow 0.3s;
}

.navbar.scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--primary);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo i {
  font-size: 1.6rem;
}

.nav-links {
  display: flex;
  gap: 6px;
}

.nav-item {
  text-decoration: none;
  color: var(--text-light);
  padding: 8px 18px;
  border-radius: 40px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-item i {
  font-size: 1rem;
}

.nav-item:hover {
  background: rgba(108, 92, 231, 0.06);
  color: var(--primary);
}

.nav-item.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(108, 92, 231, 0.25);
}

.hamburger {
  display: none;
  background: transparent;
  border: none;
  font-size: 1.5rem;
  color: var(--text);
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 8px;
  transition: background 0.2s;
}

.hamburger:hover {
  background: rgba(0,0,0,0.04);
}

/* ===== 主容器 ===== */
#viewContainer {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 24px 48px;
  animation: fadeSlideIn 0.35s ease;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 通用组件 ===== */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 24px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(108, 92, 231, 0.12);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 40px;
  border: none;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(108, 92, 231, 0.2);
}

.btn:hover {
  background: var(--primary-dark);
  transform: scale(1.02);
  box-shadow: 0 6px 20px rgba(108, 92, 231, 0.3);
}

.btn:active {
  transform: scale(0.97);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  box-shadow: none;
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}

.btn-sm {
  padding: 6px 16px;
  font-size: 0.85rem;
}

/* ===== 生成器视图 ===== */
.generator-view {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.generator-header {
  text-align: center;
  padding: 12px 0 4px;
}

.generator-header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), #fd79a8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.generator-header p {
  color: var(--text-light);
  margin-top: 8px;
  font-size: 1.05rem;
}

.generator-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: center;
}

.generator-controls label {
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
}

.generator-controls input[type="range"] {
  width: 140px;
  accent-color: var(--primary);
}

.generator-controls .color-count-display {
  min-width: 28px;
  font-weight: 600;
  color: var(--primary);
}

/* 色板卡片网格 */
.palette-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 8px;
}

.color-card {
  border-radius: var(--radius-sm);
  height: 140px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 14px 16px;
  color: #fff;
  text-shadow: 0 2px 6px rgba(0,0,0,0.3);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.color-card:hover {
  transform: scale(1.03) translateY(-4px);
  box-shadow: 0 16px 32px rgba(0,0,0,0.15);
}

.color-card .hex-label {
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.4px;
  background: rgba(0,0,0,0.25);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  padding: 4px 10px;
  border-radius: 30px;
  display: inline-block;
  width: fit-content;
  margin-bottom: 4px;
}

.color-card .copy-hint {
  font-size: 0.7rem;
  opacity: 0.7;
  margin-top: 2px;
}

/* 已保存色板区域 */
.saved-section {
  margin-top: 40px;
}

.saved-section h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.saved-section h2 i {
  color: var(--primary);
}

.saved-palettes {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 16px;
}

.saved-palette-item {
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  padding: 12px 14px;
  min-width: 140px;
  border: 1px solid #eaeaea;
  transition: var(--transition);
}

.saved-palette-item:hover {
  border-color: var(--primary-light);
  box-shadow: 0 4px 16px rgba(108, 92, 231, 0.08);
}

.saved-palette-item .mini-colors {
  display: flex;
  gap: 4px;
  margin-bottom: 8px;
}

.saved-palette-item .mini-color {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 1px solid rgba(0,0,0,0.04);
}

.saved-palette-item .palette-name {
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--text-light);
}

.empty-state {
  color: var(--text-light);
  text-align: center;
  padding: 40px 20px;
  background: #f4f4fc;
  border-radius: var(--radius);
  font-style: italic;
}

/* ===== 我的色板视图 ===== */
.palettes-view h1 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.palettes-view .empty-state i {
  font-size: 3rem;
  color: var(--primary-light);
  margin-bottom: 12px;
  display: block;
}

.palette-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.palette-list-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--card-bg);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  flex-wrap: wrap;
}

.palette-list-item .mini-colors {
  display: flex;
  gap: 6px;
  flex: 1;
  min-width: 120px;
}

.palette-list-item .mini-color {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid rgba(0,0,0,0.04);
}

.palette-list-item .palette-info {
  flex: 2;
  min-width: 120px;
}

.palette-list-item .palette-info strong {
  display: block;
  font-size: 1rem;
}

.palette-list-item .palette-info span {
  color: var(--text-light);
  font-size: 0.85rem;
}

.palette-list-item .palette-actions {
  display: flex;
  gap: 8px;
}

.btn-danger {
  background: #e17055;
  box-shadow: 0 4px 12px rgba(225, 112, 85, 0.2);
}

.btn-danger:hover {
  background: #d63031;
}

/* ===== 关于视图 ===== */
.about-view {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.about-view h1 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.about-view p {
  color: var(--text-light);
  line-height: 1.8;
  font-size: 1.05rem;
}

.about-view .feature-icons {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin: 32px 0;
  flex-wrap: wrap;
}

.about-view .feature-icons div {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: var(--card-bg);
  padding: 20px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-width: 120px;
}

.about-view .feature-icons i {
  font-size: 2.2rem;
  color: var(--primary);
}

/* ===== 底部 ===== */
.footer {
  text-align: center;
  padding: 24px;
  color: var(--text-light);
  font-size: 0.9rem;
  border-top: 1px solid rgba(0,0,0,0.04);
  background: rgba(255,255,255,0.4);
  backdrop-filter: blur(4px);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .nav-inner {
    padding: 0 16px;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(16px);
    padding: 16px 24px;
    border-bottom: 1px solid #eee;
    box-shadow: 0 8px 24px rgba(0,0,0,0.04);
    gap: 4px;
  }

  .nav-links.open {
    display: flex;
  }

  .hamburger {
    display: block;
  }

  .generator-header h1 {
    font-size: 1.6rem;
  }

  .palette-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  .color-card {
    height: 110px;
    padding: 10px 12px;
  }

  .generator-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .generator-controls label {
    justify-content: center;
  }

  .palette-list-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .palette-list-item .palette-actions {
    align-self: flex-end;
  }
}

@media (max-width: 480px) {
  #viewContainer {
    padding: 20px 12px;
  }

  .palette-grid {
    grid-template-columns: 1fr 1fr;
  }

  .color-card {
    height: 90px;
  }
}