/* 全局设置 */
:root {
  --bg-dark: #0f1012;
  /* 深色背景 */
  --panel-bg: #1A1A1A;
  /* 控制面板背景 */
  --coral: #E37B58;
  /* 珊瑚色/橙红色高亮 */
  --text-gray: #888888;
  --paper-color: #F3F2EA;
  /* 米白色宣纸背景 */

  /* 字体定义 */
  --font-serif: "Songti SC", "SimSun", "Times New Roman", serif;
  /* 宋体/衬线 */
  --font-sans: "DengXian", "Microsoft YaHei", sans-serif;
  /* 等线/无衬线 */
  --font-mono: "Consolas", "Courier New", monospace;
}

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

body {
  background-color: var(--bg-dark);
  color: white;
  font-family: var(--font-sans);
  height: 100vh;
  overflow: hidden;
  /* 防止页面滚动 */
  display: flex;
  flex-direction: column;
}

a {
  text-decoration: none;
  color: #333;
}

/* --- 顶部导航 --- */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 40px;
  background: rgba(0, 0, 0, 0.3);
}

.header-left .back-btn {
  background: none;
  border: none;
  color: #ccc;
  font-size: 14px;
  font-family: var(--font-sans);
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: color 0.3s ease;
}

.header-left .back-btn:hover {
  color: #ffffff;
}

.nav-center {
  text-align: center;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 2px;
  margin-left: 230px;
}

.logo-en {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 4px;
  color: #fff;
  margin-top: 2px;
  margin-left: 230px;
}

.nav-right {
  display: flex;
  gap: 20px;
}

.nav-item {
  font-size: 15px;
  padding: 6px 16px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;

  color: #949292;
}

.nav-item.active {
  background-color: rgba(227, 123, 88, 0.2);
  color: var(--coral);
  background-color: #e9825f;
  color: #000000;
  font-weight: bold;
}

.nav-item:hover:not(.active) {
  color: #fff;
}

/* --- 主体内容 --- */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 0 40px 64px 40px;
}

.hero-text {
  text-align: center;
  margin: 20px 0 30px 0;
}

.main-title {
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 10px;
  /* 珊瑚色渐变文字效果 */
  background: linear-gradient(to right, #E37B58, #F5A985);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sub-title {
  font-size: 16px;
  color: #fff;
}

/* --- 工作区布局 --- */
.workspace {
  display: flex;
  gap: 20px;
  flex: 1;
  height: auto;
  min-height: 0;
  padding-bottom: 12px;
}

/* 左侧画板 */
.canvas-container {
  flex: 1;
  background-color: var(--paper-color);
  border-radius: 12px;
  position: relative;
  overflow: hidden;
  background-image: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI0IiBoZWlnaHQ9IjQiPgo8cmVjdCB3aWR0aD0iNCIgaGVpZ2h0PSI0IiBmaWxsPSIjRjNGMkVBIi8+CjxwYXRoIGQ9Ik0wIDBoNHYxSDB6bTAgMmg0djFIMHoiIGZpbGw9IiNFRUVFZTQiIGZpbGwtb3BhY2l0eT0iMC41Ii8+Cjwvc3ZnPg==');
}

canvas {
  width: 100%;
  height: 100%;
  cursor: crosshair;
  display: block;
}

.canvas-footer-text {
  position: absolute;
  bottom: 40px;
  left: 20px;
  right: 20px;
  font-family: "KaiTi", "楷体", var(--font-serif);
  font-size: 13px;
  color: #555;
  background: rgba(243, 242, 234, 0.8);
  padding: 10px;
  border-radius: 4px;
  pointer-events: none;

  padding: 6px 12px;
  font-size: 16px;

}

/* 右侧控制面板 */
.control-panel {
  width: 320px;
  background-color: var(--panel-bg);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  border: 1px solid #333;
}

.panel-header {
  font-size: 12px;
  color: #fff;
  margin-bottom: 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.panel-note {
  color: var(--text-gray);
  font-size: 11px;
}

/* 滑动条样式 */
.control-group {
  margin-bottom: 30px;
}

.label-row {
  display: flex;
  justify-content: space-between;
  font-size: 15px;
  color: #ccc;
  margin-bottom: 10px;
}

.label-row span:nth-child(2) {
  font-family: var(--font-mono);
  color: var(--coral);
  font-size: 16px;
}

input[type=range] {
  width: 100%;
  appearance: none;
  background: transparent;
}

input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 14px;
  width: 14px;
  border-radius: 50%;
  background: var(--coral);
  cursor: pointer;
  margin-top: -6px;
}

input[type=range]::-webkit-slider-runnable-track {
  width: 100%;
  height: 2px;
  background: #444;
}

/* 按钮组 */
.button-group {
  display: flex;
  gap: 15px;
  margin-bottom: 30px;
}

button {
  flex: 1;
  padding: 10px;
  border-radius: 6px;
  font-size: 16px;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: opacity 0.2s;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

button:hover {
  opacity: 0.9;
}

.btn-outline {
  background: transparent;
  border: 1px solid #444;
  color: #fff;
}

.btn-solid {
  background: var(--coral);
  color: white;
}

/* 统计面板 */
.stats-panel {
  background: #151515;
  border-radius: 8px;
  padding: 15px;
  margin-top: auto;
  /* 推到底部 */
}

.stats-header {
  font-size: 15px;
  color: #acaaaa;
  margin-bottom: 10px;
}

.stats-row {
  display: flex;
  justify-content: space-between;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 14px;
  color: #999797;
  margin-bottom: 4px;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 30px;
  color: var(--coral);
}


/* --- 修改部分：标题区背景 --- */
.hero-text {
  text-align: center;
  margin: 20px 0 30px 0;
  position: relative;

  background-image: url('./气韵书画页面素材/第一页/第一页装饰暗纹.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;

  padding: 40px 20px;
  border-radius: 12px;
  overflow: hidden;

}

.hero-text::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;

  z-index: 0;

}

.hero-text h1,
.hero-text p {
  position: relative;
  z-index: 1;
}

.main-title {
  font-family: var(--font-serif);
  font-size: 36px;
  /* 稍微加大一点 */
  font-weight: bold;
  margin-bottom: 12px;
  background: linear-gradient(to right, #E37B58, #F5A985);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;

}

/* --- 响应式适配 (移动端: 屏幕宽度小于768px) --- */

@media (max-width: 768px) {

  body {
    height: auto;
    overflow-y: auto;
    overflow-x: hidden;
  }

  header {
    flex-direction: column;

    padding: 15px 15px 10px 15px;
    gap: 15px;

    position: relative;
  }

  .header-left {
    position: absolute;
    left: 15px;
    top: 20px;
  }

  .logo-text,
  .logo-en {
    margin-left: 0;
    text-align: center;
  }

  .nav-right {
    width: 100%;
    justify-content: center;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 5px;
  }

  .nav-item {
    font-size: 12px;
    padding: 6px 10px;
    white-space: nowrap;
    /* 保证导航文字不换行 */
  }

  main {
    padding: 0 15px 30px 15px;
  }

  .hero-text {
    margin: 15px 0 20px 0;
    padding: 25px 15px;

  }

  .main-title {
    font-size: 24px;
    margin-bottom: 8px;
  }

  .sub-title {
    font-size: 13px;
  }

  .workspace {
    flex-direction: column;

    height: auto;

    gap: 20px;
  }

  /* 上半部分：画板 */
  .canvas-container {
    width: 100%;
    height: 400px;

    flex: none;

  }

  .canvas-footer-text {
    font-size: 11px;
    padding: 8px;
    bottom: 10px;
    left: 10px;
    right: 10px;
  }

  /* 下半部分：控制面板 */
  .control-panel {
    width: 100%;

    flex: none;
    padding: 20px 15px;
  }

  .control-group {
    margin-bottom: 25px;
  }

  .button-group {
    margin-bottom: 25px;
  }
}