/* =====================================================================
 * styles.css — 设计系统共享样式
 * 基于 Modern Dark (Cinema Mobile) 设计规范
 * 字体：Rubik (标题) + Nunito Sans (正文)
 * 域名绑定：download.dicad.cn
 * ===================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Nunito+Sans:wght@300;400;500;600;700&family=Rubik:wght@300;400;500;600;700&display=swap');

/* ===== CSS 变量 ===== */
:root {
  /* 深色背景 */
  --bg-deep: #020203;
  --bg-base: #050506;
  --bg-elevated: #0a0a0c;

  --color-primary: #7C3AED;
  --color-primary-hover: #6D28D9;
  --color-on-primary: #FFFFFF;
  --color-secondary: #A78BFA;
  --color-accent: #16A34A;
  --color-accent-hover: #15803D;
  --color-destructive: #DC2626;

  --color-foreground: #EDEDEF;
  --color-foreground-muted: #8A8F98;
  --color-surface: rgba(255, 255, 255, 0.05);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-ring: #7C3AED;
  --color-ring-focus: rgba(124, 58, 237, 0.3);

  /* 字体 */
  --font-heading: 'Rubik', system-ui, sans-serif;
  --font-body: 'Nunito Sans', system-ui, sans-serif;

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.4);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.5);

  /* 缓动曲线 */
  --easing-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  --easing-standard: cubic-bezier(0.4, 0, 0.2, 1);

  /* 间距 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* 动画 */
  --transition-fast: 150ms var(--easing-standard);
  --transition-normal: 250ms var(--easing-smooth);
  --transition-slow: 400ms var(--easing-smooth);
}

/* ===== 全局重置 ===== */
* { box-sizing: border-box; }

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: linear-gradient(180deg, #0a0a0f 0%, var(--bg-deep) 100%);
  color: var(--color-foreground);
  min-height: 100vh;
  line-height: 1.5;
}

/* ===== 排版 ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.25;
  font-weight: 600;
  color: var(--color-foreground);
}

/* ===== 链接 ===== */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-secondary); }

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  line-height: 1;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-on-primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--color-foreground);
  padding: 12px 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  line-height: 1;
}
.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-ring-focus);
}

.btn-danger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(220, 38, 38, 0.15);
  color: var(--color-destructive);
  padding: 12px 24px;
  border: 1px solid rgba(220, 38, 38, 0.3);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  line-height: 1;
}
.btn-danger:hover {
  background: rgba(220, 38, 38, 0.25);
  border-color: var(--color-destructive);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--color-foreground-muted);
  padding: 12px 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  line-height: 1;
}
.btn-ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-foreground);
}

/* ===== 卡片 ===== */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  backdrop-filter: blur(4px);
  transition: all var(--transition-normal);
}
.card-hover {
  cursor: pointer;
  transition: all var(--transition-normal);
}
.card-hover:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(124, 58, 237, 0.2);
}

/* ===== 输入框 ===== */
.input {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-foreground);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: all var(--transition-fast);
}
.input::placeholder {
  color: var(--color-foreground-muted);
  opacity: 0.7;
}
.input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-ring-focus);
}

/* ===== 选择框 ===== */
select.input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%238A8F98' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 12px center;
  background-repeat: no-repeat;
  background-size: 20px;
  padding-right: 40px;
  cursor: pointer;
}

textarea.input {
  resize: vertical;
  min-height: 80px;
}

/* ===== 标签 ===== */
.label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-foreground-muted);
  margin-bottom: 6px;
}

/* ===== 弹窗 ===== */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.modal-box {
  background: var(--bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  max-width: 480px;
  width: 100%;
  box-shadow: var(--shadow-xl);
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 100;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  backdrop-filter: blur(8px);
}
.toast-success {
  background: rgba(22, 163, 74, 0.2);
  border: 1px solid rgba(22, 163, 74, 0.3);
  color: #4ADE80;
}
.toast-error {
  background: rgba(220, 38, 38, 0.2);
  border: 1px solid rgba(220, 38, 38, 0.3);
  color: #F87171;
}
.toast-warning {
  background: rgba(251, 191, 36, 0.2);
  border: 1px solid rgba(251, 191, 36, 0.3);
  color: #FBBF24;
}

/* ===== 表格 ===== */
.table-th {
  text-align: left;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-foreground-muted);
  font-weight: 500;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}
.table-td {
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  vertical-align: middle;
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ===== 工具类 ===== */
.text-muted { color: var(--color-foreground-muted); }
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-destructive { color: var(--color-destructive); }

.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.min-w-0 { min-width: 0; }
.hidden { display: none !important; }

/* ===== 响应式图片间距 ===== */
img, svg, video { max-width: 100%; display: block; }

/* ===== prefers-reduced-motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== 环境光晕背景（ambient light blobs）===== */
.ambient-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.ambient-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.1;
  animation: blob-drift 18s ease-in-out infinite alternate;
}
.ambient-blob-1 {
  width: 480px; height: 480px;
  background: radial-gradient(circle, #7C3AED 0%, transparent 70%);
  top: -120px; left: -80px;
}
.ambient-blob-2 {
  width: 420px; height: 420px;
  background: radial-gradient(circle, #5E6AD2 0%, transparent 70%);
  bottom: -100px; right: -60px;
  animation-delay: -6s;
}
.ambient-blob-3 {
  width: 320px; height: 320px;
  background: radial-gradient(circle, #16A34A 0%, transparent 70%);
  top: 40%; left: 55%;
  opacity: 0.06;
  animation-delay: -12s;
}
@keyframes blob-drift {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(40px, 30px) scale(1.15); }
}

/* ===== 玻璃导航栏 ===== */
.glass-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(10, 10, 15, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-foreground);
  cursor: pointer;
  text-decoration: none;
}
.nav-brand:hover { color: var(--color-foreground); }
.nav-brand .brand-icon {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, #7C3AED, #5E6AD2);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 0.95rem;
}
.nav-brand .brand-domain {
  font-weight: 400;
  color: var(--color-foreground-muted);
  font-size: 0.9rem;
}

/* ===== 分类 chips ===== */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-foreground-muted);
  transition: all var(--transition-fast);
  user-select: none;
}
.chip:hover {
  border-color: var(--color-primary);
  color: var(--color-foreground);
}
.chip-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-on-primary);
}
.chip-active:hover {
  color: var(--color-on-primary);
}

/* ===== 徽章 ===== */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-foreground-muted);
}
.badge-primary {
  background: rgba(124, 58, 237, 0.12);
  border-color: rgba(124, 58, 237, 0.25);
  color: var(--color-secondary);
}
.badge-success {
  background: rgba(22, 163, 74, 0.12);
  border-color: rgba(22, 163, 74, 0.25);
  color: #4ADE80;
}
.badge-warning {
  background: rgba(251, 191, 36, 0.12);
  border-color: rgba(251, 191, 36, 0.25);
  color: #FBBF24;
}
.badge-danger {
  background: rgba(220, 38, 38, 0.12);
  border-color: rgba(220, 38, 38, 0.25);
  color: #F87171;
}

/* ===== 页脚 ===== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 24px;
  text-align: center;
  color: var(--color-foreground-muted);
  font-size: 0.85rem;
}
.site-footer .footer-brand {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-foreground);
}
.site-footer a {
  color: var(--color-foreground-muted);
}
.site-footer a:hover {
  color: var(--color-secondary);
}

/* ===== 页面容器 ===== */
.page-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 滚动显现动画 ===== */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s var(--easing-smooth), transform 0.4s var(--easing-smooth);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 焦点可见性 ===== */
:focus-visible {
  outline: 2px solid var(--color-ring);
  outline-offset: 2px;
}