/*
 * 极简黑白轻奢编辑风设计系统
 * 仅使用约定黑白色板；接口、字段、静态资源路径不在这里处理。
 */
:root {
  --background: #FFFFFF;
  --foreground: #000000;
  --muted: #F5F5F5;
  --muted-foreground: #525252;
  --border: #000000;
  --border-light: #E5E5E5;
  --font-title: "Playfair Display", serif;
  --font-body: "Source Serif 4", serif;
  --font-mono: "JetBrains Mono", monospace;
  --section-y: 6rem;
}

* {
  box-sizing: border-box;
  border-radius: 0 !important;
  box-shadow: none !important;
}

html {
  color: var(--foreground);
  background: var(--background);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--foreground);
  font-family: var(--font-body);
  background-color: var(--background);
  background-image:
    radial-gradient(var(--border-light) 1px, var(--background) 1px),
    linear-gradient(var(--background), var(--background));
  background-size: 18px 18px, auto;
}

h1,
h2,
h3,
.font-title {
  font-family: var(--font-title);
  font-weight: 700;
  letter-spacing: -0.03em;
}

button,
input,
textarea,
select,
a {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: var(--background);
}

button:focus,
a:focus,
input:focus,
select:focus,
textarea:focus {
  outline: none;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--foreground);
  outline-offset: 3px;
}

.font-mono,
.editor-label,
.paper-button,
.tag-button {
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.wobbly,
.wobblyMd {
  border-radius: 0;
}

.paper-panel,
.paper-card,
.paper-button,
.paper-input {
  color: var(--foreground);
  background: var(--background);
  border-color: var(--border);
}

.paper-panel {
  border: 1px solid var(--border);
}

.paper-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: color 80ms linear, background-color 80ms linear, border-width 80ms linear;
}

.paper-card:hover {
  color: var(--background);
  background: var(--foreground);
  border-width: 4px;
}

.paper-card img {
  transition: transform 80ms linear, border-width 80ms linear;
}

.paper-card:hover img {
  transform: scale(1.035);
  border-width: 4px;
}

.paper-card:hover .case-meta,
.paper-card:hover .case-link {
  color: var(--background);
  border-color: var(--background);
}

.paper-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: var(--background);
  color: var(--foreground);
  transition: color 80ms linear, background-color 80ms linear, border-color 80ms linear;
}

.paper-button:hover {
  background: var(--foreground);
  color: var(--background);
}

.button-primary {
  border: 2px solid var(--border);
  background: var(--foreground);
  color: var(--background);
}

.button-primary:hover {
  background: var(--background);
  color: var(--foreground);
}

.button-ghost {
  border: 0;
  border-bottom: 1px solid var(--border);
  background: var(--background);
  padding-left: 0;
  padding-right: 0;
}

.button-ghost:hover {
  background: var(--foreground);
  color: var(--background);
}

.paper-input {
  width: 100%;
  border: 0;
  border-bottom: 2px solid var(--border);
  background: var(--background);
  color: var(--foreground);
  transition: border-width 80ms linear;
}

.paper-input:focus {
  border-bottom-width: 4px;
}

.dashed-line {
  border-top: 1px solid var(--border-light);
}

.section-rule {
  border-top: 4px solid var(--border);
}

.editor-grid {
  background-image:
    linear-gradient(var(--border-light) 1px, var(--background) 1px),
    linear-gradient(90deg, var(--border-light) 1px, var(--background) 1px);
  background-size: 48px 48px;
}

.toast {
  position: fixed;
  z-index: 80;
  right: 18px;
  bottom: 18px;
  max-width: min(360px, calc(100vw - 36px));
  border: 2px solid var(--border);
  background: var(--background);
  color: var(--foreground);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--background);
}

.modal-backdrop.is-open {
  display: flex;
}

.hide-scrollbar::-webkit-scrollbar {
  display: none;
}

.hide-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.luxury-container {
  width: min(72rem, calc(100% - 2rem));
  margin-inline: auto;
}

@media (max-width: 640px) {
  :root {
    --section-y: 4rem;
  }

  .paper-card:hover {
    border-width: 2px;
  }
}