/* ============================================
   Cream Style Design System - AI Studio
   奶油风格设计系统
   ============================================ */

:root {
  /* 奶油色配色 */
  --bg: #FFF9F0;           /* 背景主色 - 奶油米白 */
  --bg-soft: #FBF7F0;      /* 柔和背景 */
  --bg-card: #FFFFFF;      /* 卡片背景 */
  --bg-card-soft: #FFFDF9; /* 柔和卡片 */
  --bg-input: #FFFBF5;     /* 输入框背景 */
  
  /* 主色调 - 奶茶棕 */
  --brand: #D4B896;        /* 主色调 奶茶棕 */
  --brand-hover: #C4A882;  /* 悬停加深 */
  --brand-light: #F5E6D3;  /* 浅奶油棕 */
  --brand-soft: #F9F0E3;   /* 极浅奶油棕 */
  
  /* 文字色 - 棕咖色系 */
  --text: #5C4A3A;         /* 文字主色 深棕咖 */
  --text-2: #8B7968;       /* 文字次色 中棕 */
  --text-3: #B5A89A;       /* 文字辅助色 浅棕灰 */
  --text-light: #D4C8BC;   /* 最浅文字色 */
  
  /* 边框分割线 */
  --border: #F0E6D9;       /* 极浅奶油棕边框 */
  --border-hover: #E8D9C5; /* hover边框 */
  --border-focus: #E8C4A0; /* 聚焦边框 */
  
  /* 功能色 - 低饱和 */
  --success: #A8C8A0;      /* 奶油绿 */
  --success-bg: #E8F0E4;
  --warn: #E8C07D;         /* 奶油黄 */
  --warn-bg: #FDF4E3;
  --danger: #E8A8A0;       /* 奶油红 */
  --danger-bg: #FAEAE8;
  --info: #A0B8C8;         /* 奶油蓝 */
  --info-bg: #E6EEF3;
  
  /* 组件尺寸 */
  --radius-sm: 12px;       /* 小圆角 */
  --radius: 16px;          /* 标准圆角 */
  --radius-lg: 20px;       /* 大圆角 */
  --radius-xl: 24px;       /* 超大圆角 */
  
  /* 阴影 - 柔和奶油感 */
  --shadow-sm: 0 2px 8px rgba(200, 170, 140, 0.06);
  --shadow: 0 4px 20px rgba(200, 170, 140, 0.08);
  --shadow-md: 0 8px 30px rgba(200, 170, 140, 0.1);
  --shadow-lg: 0 12px 40px rgba(200, 170, 140, 0.12);
  --shadow-inset: inset 0 1px 2px rgba(255, 255, 255, 0.8);
  
  /* 奶油光泽渐变 */
  --glow-cream: linear-gradient(180deg, rgba(255,255,255,0.8) 0%, rgba(255,249,240,0.4) 100%);
}

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

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  font-weight: 400;
  letter-spacing: 0.01em;
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: var(--brand-light);
  color: var(--text);
}

/* ============================================
   Navbar - 顶部导航
   ============================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 249, 240, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.navbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 18px;
  color: var(--text);
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--brand-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  transition: all 0.2s ease;
}

.logo:hover .logo-icon {
  background: var(--brand);
  transform: scale(1.05);
}

.logo-text {
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-2);
  transition: all 0.2s ease;
  cursor: pointer;
  font-weight: 450;
}

.nav-link:hover {
  color: var(--text);
  background: var(--brand-soft);
}

.nav-link.active {
  color: var(--text);
  background: var(--brand-light);
  font-weight: 500;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.credit-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--brand-soft);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-2);
  transition: all 0.2s ease;
}

.credit-badge:hover {
  background: var(--brand-light);
}

.credit-badge .credit-icon {
  font-size: 15px;
}

.credit-badge b {
  color: var(--text);
  font-weight: 600;
}

.avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #F5E6D3, #E8C4A0);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  color: #5C4A3A;
  cursor: pointer;
  transition: all 0.2s ease;
}

.avatar:hover {
  transform: scale(1.05);
}

/* ============================================
   Hero - 首页主视觉
   ============================================ */
.hero {
  position: relative;
  padding: 100px 32px 80px;
  background: linear-gradient(180deg, #FFFBF5 0%, #FFF9F0 100%);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -200px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(232, 196, 160, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -150px;
  left: -50px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(245, 230, 211, 0.3) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-inner {
  max-width: 1180px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--text-2);
  font-size: 13px;
  letter-spacing: 0.03em;
  margin-bottom: 28px;
  border: 1px solid var(--border);
}

.hero .badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 4px rgba(212, 184, 150, 0.2);
}

.hero h1 {
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.15;
  margin: 0 0 24px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.hero .sub {
  font-size: 17px;
  color: var(--text-2);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 56px;
  margin-top: 56px;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
}

.hero-stat .num {
  font-size: 30px;
  font-weight: 700;
  color: var(--text);
}

.hero-stat .label {
  font-size: 13px;
  color: var(--text-3);
  margin-top: 6px;
}

/* ============================================
   Sections & Grid - 通用区块
   ============================================ */
.studios-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 70px 32px 90px;
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
  flex-wrap: wrap;
  gap: 20px;
}

.section-title {
  font-size: 26px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text);
  letter-spacing: -0.01em;
}

.section-title::before {
  content: "";
  width: 4px;
  height: 26px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--brand), var(--brand-light));
}

.section-sub {
  color: var(--text-2);
  font-size: 15px;
  margin-top: 6px;
  margin-left: 16px;
  font-weight: 400;
}

/* Category Tabs */
.category-tabs {
  display: flex;
  gap: 8px;
  background: var(--bg-card-soft);
  padding: 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  overflow-x: auto;
}

.category-tab {
  padding: 8px 20px;
  border-radius: 10px;
  font-size: 13.5px;
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  font-weight: 450;
}

.category-tab:hover {
  color: var(--text);
}

.category-tab.active {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 2px 8px rgba(212, 184, 150, 0.3);
  font-weight: 500;
}

/* Studio Grid - 工作室卡片 */
.studio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.studio-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.studio-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-light), var(--brand));
  transform: scaleX(0);
  transition: transform 0.3s ease;
  transform-origin: left;
}

.studio-card:hover {
  border-color: var(--brand-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.studio-card:hover::before {
  transform: scaleX(1);
}

.studio-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 18px;
  background: var(--brand-soft);
}

.studio-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.studio-card p {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 18px;
  line-height: 1.7;
}

.studio-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.studio-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.studio-tag {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--text-2);
  font-weight: 450;
}

.studio-tag.hot {
  background: var(--warn-bg);
  color: #C49B5B;
}

.studio-credit {
  font-size: 13px;
  color: var(--text-3);
}

.studio-credit b {
  color: var(--brand);
  font-weight: 600;
}

.studio-card .arrow {
  position: absolute;
  right: 24px;
  top: 28px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-3);
  transition: all 0.2s ease;
  opacity: 0;
  transform: translateX(-4px);
}

.studio-card:hover .arrow {
  opacity: 1;
  transform: translateX(0);
  background: var(--brand);
  color: #fff;
}

/* ============================================
   Studio Page - 工作室页面布局
   ============================================ */
.studio-page {
  max-width: 1440px;
  margin: 0 auto;
  padding: 28px 32px 80px;
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 28px;
  min-height: calc(100vh - 70px);
}

@media (max-width: 1100px) {
  .studio-page {
    grid-template-columns: 1fr;
  }
}

/* Left Panel - 左侧表单面板 */
.studio-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 120px);
  position: sticky;
  top: 90px;
  box-shadow: var(--shadow-sm);
}

.panel-header {
  padding: 22px 26px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-card-soft);
}

.panel-header .back-btn {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-2);
  font-size: 16px;
  transition: all 0.2s ease;
  border: 1px solid var(--border);
}

.panel-header .back-btn:hover {
  background: var(--brand-soft);
  color: var(--text);
  border-color: var(--brand-light);
}

.panel-header h2 {
  font-size: 17px;
  font-weight: 600;
  flex: 1;
  color: var(--text);
}

.panel-header .studio-icon-sm {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: var(--brand-soft);
}

.panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 4px 0;
}

.panel-body::-webkit-scrollbar {
  width: 5px;
}

.panel-body::-webkit-scrollbar-track {
  background: transparent;
}

.panel-body::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

/* Form Sections - 表单分区 */
.form-section {
  padding: 18px 26px;
  border-bottom: 1px solid var(--border);
}

.form-section:last-child {
  border-bottom: none;
}

.form-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  cursor: pointer;
}

.form-section-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 0.01em;
}

.form-section-title .sec-icon {
  font-size: 16px;
}

.form-section-toggle {
  font-size: 12px;
  color: var(--text-3);
  transition: transform 0.2s ease;
}

.form-section.collapsed .form-section-toggle {
  transform: rotate(-90deg);
}

.form-section.collapsed .form-fields {
  display: none;
}

/* Form Groups - 表单组 */
.form-group {
  margin-bottom: 18px;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: block;
  font-size: 13px;
  color: var(--text-2);
  margin-bottom: 10px;
  font-weight: 500;
}

.form-label .required {
  color: var(--danger);
  margin-left: 3px;
  font-weight: 400;
}

/* Inputs - 输入框 */
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 11px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s ease;
  outline: none;
  font-weight: 400;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--border-hover);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--brand);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(212, 184, 150, 0.12);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23B5A89A' stroke-width='2' stroke-linecap='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 38px;
  cursor: pointer;
}

.form-textarea {
  resize: vertical;
  min-height: 84px;
  line-height: 1.7;
}

.form-textarea::placeholder,
.form-input::placeholder {
  color: var(--text-light);
}

/* Option Groups - 选项组 */
.option-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.option-group.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.option-item {
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-2);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 450;
}

.option-item:hover {
  border-color: var(--brand-light);
  color: var(--text);
  background: var(--brand-soft);
}

.option-item.active {
  background: var(--brand-soft);
  border-color: var(--brand);
  color: var(--text);
  font-weight: 500;
}

/* Toggle Switch - 开关 */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
}

.toggle-label {
  font-size: 14px;
  color: var(--text-2);
}

.toggle-switch {
  position: relative;
  width: 44px;
  height: 26px;
  background: var(--border);
  border-radius: 13px;
  cursor: pointer;
  transition: all 0.25s ease;
}

.toggle-switch::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
  transition: all 0.25s ease;
}

.toggle-switch.active {
  background: var(--brand);
}

.toggle-switch.active::after {
  left: 21px;
  box-shadow: 0 2px 6px rgba(212, 184, 150, 0.4);
}

/* Slider - 滑块 */
.slider-container {
  display: flex;
  align-items: center;
  gap: 14px;
}

.slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--brand);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(212, 184, 150, 0.25);
  transition: all 0.2s ease;
}

.slider::-webkit-slider-thumb:hover {
  box-shadow: 0 0 0 6px rgba(212, 184, 150, 0.15);
}

.slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--brand);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(212, 184, 150, 0.25);
}

.slider-value {
  min-width: 52px;
  text-align: right;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand);
  font-family: -apple-system, ui-monospace, monospace;
}

/* Color Palette - 调色板 */
.color-palette {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.color-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.color-swatch {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  border: 2px solid transparent;
  transition: all 0.2s ease;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.color-option:hover .color-swatch {
  transform: scale(1.08);
}

.color-option.active .color-swatch {
  border-color: #fff;
  box-shadow: 0 0 0 2px var(--brand), 0 2px 8px rgba(212, 184, 150, 0.3);
}

.color-label {
  font-size: 11px;
  color: var(--text-3);
}

/* Tag Input - 标签输入 */
.tag-input-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 10px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-height: 44px;
  transition: all 0.2s ease;
}

.tag-input-wrapper:focus-within {
  border-color: var(--brand);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(212, 184, 150, 0.12);
}

.tag-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--brand-soft);
  border-radius: 8px;
  font-size: 12px;
  color: var(--text-2);
  font-weight: 450;
}

.tag-item .tag-close {
  cursor: pointer;
  color: var(--text-3);
  font-size: 14px;
  line-height: 1;
  transition: color 0.2s;
}

.tag-item .tag-close:hover {
  color: var(--danger);
}

.tag-input {
  flex: 1;
  min-width: 100px;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 13px;
  outline: none;
  padding: 4px;
}

.tag-input::placeholder {
  color: var(--text-light);
}

/* Upload Area - 上传区域 */
.upload-area {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  background: var(--bg-input);
}

.upload-area:hover {
  border-color: var(--brand);
  background: var(--brand-soft);
}

.upload-icon {
  font-size: 28px;
  margin-bottom: 10px;
  opacity: 0.7;
}

.upload-text {
  font-size: 13px;
  color: var(--text-2);
}

.upload-text b {
  color: var(--brand);
  font-weight: 500;
}

.upload-hint {
  font-size: 11px;
  color: var(--text-3);
  margin-top: 6px;
}

/* Number Stepper - 数字步进器 */
.number-stepper {
  display: flex;
  align-items: center;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  width: fit-content;
  transition: all 0.2s ease;
}

.number-stepper:hover {
  border-color: var(--border-hover);
}

.stepper-btn {
  width: 38px;
  height: 40px;
  background: var(--bg-soft);
  border: none;
  color: var(--text-2);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.stepper-btn:hover {
  background: var(--brand-soft);
  color: var(--text);
}

.stepper-input {
  width: 64px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text);
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  outline: none;
  -moz-appearance: textfield;
}

.stepper-input::-webkit-outer-spin-button,
.stepper-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* ============================================
   Panel Footer - 底栏 & 生成按钮
   ============================================ */
.panel-footer {
  padding: 18px 26px 22px;
  border-top: 1px solid var(--border);
  background: var(--bg-card-soft);
}

.cost-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 13px;
}

.cost-info .cost-label {
  color: var(--text-3);
}

.cost-info .cost-value {
  color: var(--brand);
  font-weight: 600;
  font-size: 14px;
}

.generate-btn {
  width: 100%;
  padding: 14px;
  background: var(--brand);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
  letter-spacing: 0.02em;
}

.generate-btn:hover {
  background: var(--brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(212, 184, 150, 0.35);
}

.generate-btn:active {
  transform: translateY(0);
}

.generate-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.generate-btn .btn-icon {
  margin-right: 8px;
}

.generate-btn.loading {
  pointer-events: none;
}

.generate-btn.loading::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 18px;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: translateY(-50%) rotate(360deg); }
}

/* ============================================
   Preview Area - 右侧预览区
   ============================================ */
.preview-area {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.preview-title {
  font-size: 17px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.preview-actions {
  display: flex;
  gap: 8px;
}

.action-btn {
  padding: 9px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 450;
}

.action-btn:hover {
  color: var(--text);
  border-color: var(--brand-light);
  background: var(--brand-soft);
}

.action-btn.primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

.action-btn.primary:hover {
  background: var(--brand-hover);
  border-color: var(--brand-hover);
}

/* Preview Content - 预览内容 */
.preview-content {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 32px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

/* Empty State - 空状态 */
.preview-empty {
  text-align: center;
  max-width: 380px;
}

.preview-empty .empty-icon {
  font-size: 60px;
  margin-bottom: 20px;
  opacity: 0.6;
}

.preview-empty h3 {
  font-size: 19px;
  margin-bottom: 10px;
  color: var(--text);
  font-weight: 600;
}

.preview-empty p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.8;
}

/* Generating State - 生成中状态 */
.preview-generating {
  text-align: center;
  width: 100%;
}

.generating-animation {
  position: relative;
  width: 100px;
  height: 100px;
  margin: 0 auto 28px;
}

.gen-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2.5px solid transparent;
  border-top-color: var(--brand);
  animation: spinRing 1.5s linear infinite;
  opacity: 0.8;
}

.gen-ring:nth-child(2) {
  inset: 14px;
  border-top-color: var(--brand-light);
  animation-duration: 2s;
  animation-direction: reverse;
}

.gen-center-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  animation: softPulse 2s ease-in-out infinite;
}

@keyframes spinRing {
  to { transform: rotate(360deg); }
}

@keyframes softPulse {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.generating-text h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--text);
  font-weight: 600;
}

.generating-text p {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 24px;
}

.progress-bar {
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--brand-light), var(--brand));
  border-radius: 3px;
  transition: width 0.3s ease;
}

.progress-text {
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-3);
}

/* Results Grid - 结果网格 */
.results-grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 18px;
  align-content: start;
}

.result-item {
  aspect-ratio: 1;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  transition: all 0.25s ease;
}

.result-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-light);
}

.result-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: linear-gradient(135deg, #FFF7EC, #FDF0E0);
  font-size: 44px;
}

.result-placeholder .result-num {
  font-size: 12px;
  color: var(--text-3);
  font-family: ui-monospace, monospace;
  font-weight: 500;
}

.result-text-card {
  aspect-ratio: auto;
  padding: 22px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--bg-card);
}

.result-text-card h4 {
  font-size: 15px;
  color: var(--text);
  margin-bottom: 2px;
  font-weight: 600;
}

.result-text-card .result-meta {
  font-size: 11px;
  color: var(--text-3);
  margin-bottom: 6px;
}

.result-text-card .result-content {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.75;
  flex: 1;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 6;
  -webkit-box-orient: vertical;
}

.result-text-card .result-tags {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.result-text-card .result-tag {
  font-size: 10px;
  padding: 3px 8px;
  background: var(--brand-soft);
  color: var(--text-2);
  border-radius: 6px;
  font-weight: 450;
}

/* ============================================
   Feature Section - 首页特色
   ============================================ */
.feature-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px 90px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .feature-grid { grid-template-columns: 1fr; }
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.feature-card:hover {
  border-color: var(--brand-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 18px;
  background: var(--brand-soft);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.feature-card p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
}

/* ============================================
   Workflow Section - 流程步骤
   ============================================ */
.workflow-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px 90px;
}

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 40px;
  position: relative;
}

@media (max-width: 900px) {
  .workflow-steps { grid-template-columns: repeat(2, 1fr); gap: 32px; }
}

.workflow-step {
  text-align: center;
  padding: 0 20px;
  position: relative;
}

.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-light), var(--brand));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 17px;
  margin: 0 auto 18px;
  color: #fff;
  box-shadow: 0 4px 14px rgba(212, 184, 150, 0.3);
}

.workflow-step h4 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--text);
  font-weight: 600;
}

.workflow-step p {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.7;
}

.workflow-step::after {
  content: "→";
  position: absolute;
  right: -6px;
  top: 24px;
  color: var(--text-light);
  font-size: 18px;
}

.workflow-step:last-child::after {
  display: none;
}

@media (max-width: 900px) {
  .workflow-step::after { display: none; }
}

/* ============================================
   Footer - 底部
   ============================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px;
  text-align: center;
  color: var(--text-3);
  font-size: 13px;
  background: var(--bg-soft);
}

/* ============================================
   Utilities - 工具类
   ============================================ */
.hidden {
  display: none !important;
}

.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-20 { margin-top: 20px; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }

.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }

.text-sm { font-size: 13px; }
.text-xs { font-size: 12px; }
.text-muted { color: var(--text-3); }
.text-accent { color: var(--brand); }
.text-warn { color: var(--warn); }
.text-ok { color: var(--success); }

/* Fade in animation */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.4s ease-out;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 12px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  box-shadow: var(--shadow-md);
  z-index: 1000;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast.success {
  border-color: var(--success);
  background: var(--success-bg);
  color: #6B8F62;
}

.toast.error {
  border-color: var(--danger);
  background: var(--danger-bg);
  color: #C48B82;
}

/* Responsive */
@media (max-width: 768px) {
  .navbar-inner {
    padding: 0 20px;
    height: 64px;
  }
  
  .nav-links {
    display: none;
  }
  
  .hero {
    padding: 60px 20px 50px;
  }
  
  .hero h1 {
    font-size: 32px;
  }
  
  .hero-stats {
    gap: 32px;
    margin-top: 40px;
  }
  
  .studios-section,
  .feature-section,
  .workflow-section {
    padding-left: 20px;
    padding-right: 20px;
  }
  
  .studio-page {
    padding: 20px;
  }
  
  .credit-badge {
    display: none;
  }
}
/* 详情弹窗 */
.modal-mask {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 9999;
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal-content {
  background: var(--bg); border-radius: 16px; max-width: 900px; width: 100%;
  max-height: 90vh; display: flex; flex-direction: column; overflow: hidden;
  box-shadow: 0 20px 60px rgba(92,74,58,0.2);
}
.modal-header {
  padding: 16px 20px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-title { font-weight: 600; color: var(--text-1); font-size: 16px; }
.modal-close {
  background: none; border: none; font-size: 24px; color: var(--text-3);
  cursor: pointer; line-height: 1; padding: 4px 8px;
}
.modal-close:hover { color: var(--text-1); }
.modal-body { padding: 20px; overflow-y: auto; }

.detail-img-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px; margin-bottom: 20px;
}
.detail-img-item {
  position: relative; border-radius: 12px; overflow: hidden;
  background: var(--card-bg); aspect-ratio: 1;
}
.detail-img-item img {
  width: 100%; height: 100%; object-fit: cover; cursor: pointer;
  transition: transform 0.2s;
}
.detail-img-item img:hover { transform: scale(1.02); }
.detail-img-index {
  position: absolute; bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.6); color: #fff;
  padding: 2px 8px; border-radius: 8px; font-size: 12px;
}
.detail-img-title {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: #fff; padding: 20px 10px 10px; font-size: 13px;
}

.detail-text-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px; }
.detail-text-item {
  background: var(--card-bg); border-radius: 12px; padding: 16px;
  border: 1px solid var(--border);
}
.detail-text-title { font-weight: 600; color: var(--text-1); margin-bottom: 8px; }
.detail-text-content { color: var(--text-2); line-height: 1.7; font-size: 14px; white-space: pre-wrap; }
.detail-tags { margin-top: 10px; display: flex; gap: 6px; flex-wrap: wrap; }
.detail-tags .tag {
  background: var(--brand-light); color: var(--brand);
  padding: 2px 10px; border-radius: 6px; font-size: 12px;
}

.detail-failed { text-align: center; padding: 40px; }

.detail-params-title {
  font-weight: 600; color: var(--text-1); font-size: 14px;
  margin-bottom: 10px; padding-top: 16px; border-top: 1px solid var(--border);
}
.detail-params {
  background: var(--card-bg); border-radius: 10px; padding: 12px 16px;
  border: 1px solid var(--border);
}
.param-row {
  display: flex; justify-content: space-between; padding: 6px 0;
  font-size: 13px; border-bottom: 1px dashed var(--border);
}
.param-row:last-child { border-bottom: none; }
.param-key { color: var(--text-3); }
.param-val { color: var(--text-2); text-align: right; max-width: 60%; word-break: break-all; }

.link-btn {
  background: none; border: none; color: var(--brand);
  cursor: pointer; font-size: 13px; padding: 4px 8px;
}
.link-btn:hover { text-decoration: underline; }


/* 结果页顶部操作栏 */
.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding: 0 4px;
  flex-wrap: wrap;
  gap: 12px;
}
.results-header-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* 图片结果悬停遮罩 */
.result-image-item {
  position: relative;
  overflow: hidden;
}
.result-item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,0.5) 100%);
  opacity: 0;
  transition: opacity 0.25s;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 10px;
  border-radius: 12px;
}
.result-image-item:hover .result-item-overlay {
  opacity: 1;
}
.result-item-badge {
  align-self: flex-start;
  background: rgba(0,0,0,0.5);
  color: #fff;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
}
.result-item-actions {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
}
.result-item-btn {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.95);
  border: none;
  cursor: pointer;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.result-item-btn:hover {
  transform: scale(1.1);
  background: #fff;
}