/* ============================================================
   aiwzd.vip 公共样式 —— 深色玻璃科技风
   类名与旧版完全兼容：子页面（工具/知识/关于/文章）仅换肤不换结构
   注意：全局保持 content-box（旧子页面按此构建），新首页组件内部自行 border-box
   ============================================================ */

@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&display=swap");

*,
*::before,
*::after {
  box-sizing: content-box;
}

:root {
  color-scheme: dark;
  --color-bg: #0b0d13;
  --color-bg-warm: #0e1119;
  --color-surface: rgba(255, 255, 255, 0.055);
  --color-surface-solid: #141824;
  --color-surface-hover: rgba(255, 255, 255, 0.09);
  --color-text: #e8eaf2;
  --color-text-muted: #9aa1b5;
  --color-text-faint: #6d7488;
  --color-primary: #5b8cff;
  --color-primary-hover: #7da2ff;
  --color-primary-light: rgba(91, 140, 255, 0.14);
  --color-accent: #9b6bff;
  --color-border: rgba(255, 255, 255, 0.09);
  --color-border-strong: rgba(255, 255, 255, 0.16);
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 14px 44px rgba(0, 0, 0, 0.55);
  --glow-primary: 0 8px 28px rgba(91, 140, 255, 0.35);
  --radius: 16px;
  --radius-sm: 10px;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 13, 19, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.logo em,
.logo span {
  color: var(--color-primary);
  font-style: normal;
}

.main-nav {
  display: flex;
  gap: 1.4rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.main-nav::-webkit-scrollbar {
  display: none;
}

.nav-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.35rem 0;
  position: relative;
  transition: color 0.2s;
  white-space: nowrap;
}

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

.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
}

/* ---------- 主内容 ---------- */
.main-content {
  flex: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  width: 100%;
}

/* ---------- 通用文本 ---------- */
.page-title {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  font-weight: 700;
}

.page-desc {
  margin: 0 0 2rem;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* ---------- 通用按钮 ---------- */
.btn {
  padding: 0.55rem 1.2rem;
  font-size: 0.875rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: linear-gradient(120deg, var(--color-primary), var(--color-accent));
  color: #fff;
  transition: transform 0.15s, box-shadow 0.25s, filter 0.2s;
}

.btn:hover {
  filter: brightness(1.12);
  box-shadow: var(--glow-primary);
}

.btn:active {
  transform: scale(0.98);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text);
  border: 1px solid var(--color-border-strong);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.13);
  box-shadow: none;
  filter: none;
}

/* ---------- 表单控件（工具页 textarea/input 自动适配深色） ---------- */
.tool-panel textarea,
.tool-panel input[type="text"],
.tool-panel input[type="datetime-local"] {
  background: rgba(0, 0, 0, 0.3);
  color: var(--color-text);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
}

.tool-panel textarea::placeholder,
.tool-panel input::placeholder {
  color: var(--color-text-faint);
}

.tool-panel textarea:focus,
.tool-panel input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.tool-panel textarea {
  font-family: "Consolas", "Monaco", "Courier New", monospace;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: rgba(255, 255, 255, 0.03);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1.5rem;
  text-align: center;
}

.copyright,
.icp {
  margin: 0.25rem 0;
  font-size: 0.875rem;
  color: var(--color-text-faint);
}

.icp a {
  color: var(--color-text-faint);
  text-decoration: none;
}

.icp a:hover {
  color: var(--color-primary);
}

/* ---------- 小屏适配 ---------- */
@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
    padding: 0.8rem 1.1rem;
  }

  .main-content {
    padding: 1.5rem 1.1rem 2.5rem;
  }

  .page-title {
    font-size: 1.5rem;
  }
}