/* ============================================================
 * ZLRomi-UI v0.1 — 组件与布局（消费 tokens.css 的变量）
 * ============================================================ */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--zui-font-sans);
  background: var(--zui-background);
  color: var(--zui-on-background);
  line-height: 1.7;
  animation: zui-page-in var(--zui-duration-slow) var(--zui-ease-out) both;
  transition: background-color var(--zui-duration-base) var(--zui-ease-out),
    color var(--zui-duration-base) var(--zui-ease-out);
}

@keyframes zui-page-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.zui-container {
  width: 100%;
  max-width: var(--zui-container-max);
  margin: 0 auto;
  padding: 0 var(--zui-space-6);
}

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

code {
  font-family: var(--zui-font-mono);
  font-size: 0.85em;
  background: var(--zui-surface-2);
  border-radius: var(--zui-radius-xs);
  padding: 1px 6px;
}

/* ---------- 顶栏 ---------- */
.zui-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--zui-header-height);
  background: var(--zui-surface-1);
  border-bottom: 1px solid var(--zui-outline-variant);
}

.zui-header-inner {
  height: var(--zui-header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--zui-space-4);
}

.zui-brand {
  display: flex;
  align-items: center;
  gap: var(--zui-space-3);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.zui-logo {
  color: var(--zui-primary);
  transition: transform var(--zui-duration-base) var(--zui-ease-spring);
}

.zui-brand:hover .zui-logo {
  transform: scale(1.08);
}

.zui-nav {
  display: flex;
  gap: var(--zui-space-1);
}

.zui-nav-link {
  font-size: var(--zui-text-small);
  font-weight: 500;
  color: var(--zui-on-surface-variant);
  padding: var(--zui-space-2) var(--zui-space-4);
  border-radius: var(--zui-radius-full);
  transition: background-color var(--zui-duration-fast) var(--zui-ease-out),
    color var(--zui-duration-fast) var(--zui-ease-out);
}

.zui-nav-link:hover {
  color: var(--zui-on-surface);
  background: var(--zui-state-hover);
}

.zui-nav-link.is-active {
  color: var(--zui-on-surface);
  background: var(--zui-state-hover);
}

.zui-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--zui-on-surface-variant);
  cursor: pointer;
  transition: background-color var(--zui-duration-fast) var(--zui-ease-out),
    transform var(--zui-duration-fast) var(--zui-ease-out);
}

.zui-icon-btn:hover {
  background: var(--zui-state-hover);
  color: var(--zui-on-surface);
}

.zui-icon-btn:active {
  transform: scale(0.92);
}

.zui-menu-btn {
  display: none;
}

/* ---------- Hero ---------- */
.zui-hero {
  padding: var(--zui-space-24) 0 var(--zui-space-16);
  text-align: center;
  scroll-margin-top: var(--zui-header-height);
}

.zui-eyebrow {
  display: inline-flex;
  align-items: center;
  padding: var(--zui-space-2) var(--zui-space-4);
  margin-bottom: var(--zui-space-6);
  border: 1px solid var(--zui-outline-variant);
  border-radius: var(--zui-radius-full);
  background: var(--zui-surface-1);
  color: var(--zui-on-surface-variant);
  font-size: var(--zui-text-caption);
  font-weight: 500;
  letter-spacing: 0.06em;
}

.zui-hero-title,
.zui-hero-sub,
.zui-hero-actions {
  opacity: 0;
}

body.is-loaded .zui-hero-title {
  animation: zui-rise-in 0.7s var(--zui-ease-out) 0.05s both;
}

body.is-loaded .zui-hero-sub {
  animation: zui-rise-in 0.7s var(--zui-ease-out) 0.16s both;
}

body.is-loaded .zui-hero-actions {
  animation: zui-rise-in 0.7s var(--zui-ease-out) 0.28s both;
}

@keyframes zui-rise-in {
  from {
    opacity: 0;
    transform: translateY(22px);
    filter: blur(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

.zui-hero-title {
  font-size: var(--zui-text-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: var(--zui-space-4);
}

.zui-hero-title .accent {
  color: var(--zui-primary);
}

/* 签名细节：品牌选中色 */
::selection {
  background: var(--zui-primary);
  color: var(--zui-on-primary);
}

.zui-hero-sub {
  max-width: 620px;
  margin: 0 auto var(--zui-space-8);
  color: var(--zui-on-surface-variant);
}

.zui-hero-actions {
  display: flex;
  gap: var(--zui-space-3);
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- 区块 ---------- */
.zui-section {
  padding: var(--zui-space-16) 0;
  scroll-margin-top: var(--zui-header-height);
}

.zui-section-head {
  margin-bottom: var(--zui-space-8);
}

.zui-section-index {
  font-family: var(--zui-font-mono);
  font-size: var(--zui-text-caption);
  color: var(--zui-primary);
  letter-spacing: 0.08em;
}

.zui-section-title {
  font-size: var(--zui-text-h1);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: var(--zui-space-1) 0 var(--zui-space-2);
}

.zui-section-desc {
  color: var(--zui-on-surface-variant);
  max-width: 640px;
}

.zui-demo {
  background: var(--zui-surface-1);
  border: 1px solid var(--zui-outline-variant);
  border-radius: var(--zui-radius-lg);
  padding: var(--zui-space-8);
}

/* ---------- 色板 ---------- */
.zui-swatches {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--zui-space-4);
}

.zui-swatch {
  border: 1px solid var(--zui-outline-variant);
  border-radius: var(--zui-radius-md);
  overflow: hidden;
  cursor: pointer;
  background: var(--zui-surface);
  transition: transform var(--zui-duration-base) var(--zui-ease-out),
    box-shadow var(--zui-duration-base) var(--zui-ease-out);
}

.zui-swatch:hover {
  transform: translateY(-3px);
  box-shadow: var(--zui-elevation-2);
}

.zui-swatch-chip {
  height: 72px;
}

.zui-swatch-meta {
  padding: var(--zui-space-2) var(--zui-space-3);
}

.zui-swatch-name {
  display: block;
  font-size: var(--zui-text-small);
  font-weight: 600;
}

.zui-swatch-value {
  font-family: var(--zui-font-mono);
  font-size: var(--zui-text-caption);
  color: var(--zui-on-surface-variant);
}

/* ---------- 字体 ---------- */
.zui-type-row {
  padding: var(--zui-space-4) 0;
  border-bottom: 1px dashed var(--zui-outline-variant);
  display: flex;
  align-items: baseline;
  gap: var(--zui-space-6);
  flex-wrap: wrap;
}

.zui-type-row:last-child {
  border-bottom: none;
}

.zui-type-tag {
  min-width: 190px;
  font-family: var(--zui-font-mono);
  font-size: var(--zui-text-caption);
  color: var(--zui-on-surface-variant);
}

.zui-type-display { font-size: var(--zui-text-display); font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; }
.zui-type-h1 { font-size: var(--zui-text-h1); font-weight: 700; }
.zui-type-h2 { font-size: var(--zui-text-h2); font-weight: 600; }
.zui-type-body { font-size: var(--zui-text-body); }
.zui-type-small { font-size: var(--zui-text-small); color: var(--zui-on-surface-variant); }

/* ---------- 圆角 / 间距 / 阴影 ---------- */
.zui-shape-row,
.zui-elev-row {
  display: flex;
  gap: var(--zui-space-4);
  flex-wrap: wrap;
  align-items: flex-end;
}

.zui-shape-box {
  width: 96px;
  height: 96px;
  background: var(--zui-primary-container);
  color: var(--zui-on-primary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--zui-font-mono);
  font-size: var(--zui-text-caption);
}

.zui-space-bar {
  display: flex;
  align-items: center;
  gap: var(--zui-space-3);
  margin-bottom: var(--zui-space-2);
  font-family: var(--zui-font-mono);
  font-size: var(--zui-text-caption);
  color: var(--zui-on-surface-variant);
}

.zui-space-block {
  height: 24px;
  background: var(--zui-primary);
  border-radius: var(--zui-radius-xs);
}

.zui-elev-box {
  width: 150px;
  height: 96px;
  background: var(--zui-surface);
  border-radius: var(--zui-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--zui-font-mono);
  font-size: var(--zui-text-caption);
}

/* ---------- 按钮 ---------- */
.zui-btn-row {
  display: flex;
  gap: var(--zui-space-3);
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: var(--zui-space-4);
}

.zui-btn-row:last-child {
  margin-bottom: 0;
}

.zui-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 var(--zui-space-6);
  border-radius: var(--zui-radius-full);
  font-size: var(--zui-text-small);
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color var(--zui-duration-fast) var(--zui-ease-out),
    color var(--zui-duration-fast) var(--zui-ease-out),
    border-color var(--zui-duration-fast) var(--zui-ease-out),
    box-shadow var(--zui-duration-base) var(--zui-ease-out),
    transform 0.15s ease;
}

.zui-btn:active {
  transform: scale(0.97);
}

.zui-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.zui-btn-primary {
  background: var(--zui-primary);
  color: var(--zui-on-primary);
  box-shadow: var(--zui-elevation-1);
}

.zui-btn-primary:hover:not(:disabled) {
  box-shadow: var(--zui-elevation-2);
}

.zui-btn-secondary {
  background: var(--zui-secondary-container);
  color: var(--zui-on-secondary-container);
}

.zui-btn-outline {
  background: transparent;
  color: var(--zui-primary);
  border-color: var(--zui-outline);
}

.zui-btn-outline:hover:not(:disabled) {
  background: var(--zui-primary);
  color: var(--zui-on-primary);
  border-color: transparent;
}

.zui-btn-danger {
  background: var(--zui-error);
  color: var(--zui-on-error);
}

.zui-btn-sm {
  height: 34px;
  padding: 0 var(--zui-space-4);
  font-size: var(--zui-text-caption);
}

/* ---------- 标签 ---------- */
.zui-chip {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 var(--zui-space-3);
  border-radius: var(--zui-radius-sm);
  font-size: var(--zui-text-caption);
  font-weight: 500;
}

.zui-chip-primary { background: var(--zui-primary-container); color: var(--zui-on-primary-container); }
.zui-chip-secondary { background: var(--zui-secondary-container); color: var(--zui-on-secondary-container); }
.zui-chip-tertiary { background: var(--zui-tertiary-container); color: var(--zui-on-tertiary-container); }
.zui-chip-outline { border: 1px solid var(--zui-outline-variant); color: var(--zui-on-surface-variant); }

/* ---------- 卡片 ---------- */
.zui-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--zui-space-4);
}

.zui-card {
  background: var(--zui-surface);
  border: 1px solid var(--zui-outline-variant);
  border-radius: var(--zui-radius-md);
  padding: var(--zui-space-6);
  box-shadow: var(--zui-elevation-1);
  transition: transform var(--zui-duration-base) var(--zui-ease-out),
    box-shadow var(--zui-duration-base) var(--zui-ease-out);
}

.zui-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--zui-elevation-3);
}

.zui-card-title {
  font-size: var(--zui-text-h2);
  font-weight: 600;
  margin: var(--zui-space-3) 0 var(--zui-space-2);
}

.zui-card-text {
  font-size: var(--zui-text-small);
  color: var(--zui-on-surface-variant);
}

/* ---------- 表单 ---------- */
.zui-field {
  margin-bottom: var(--zui-space-4);
  max-width: 420px;
}

.zui-field:last-child {
  margin-bottom: 0;
}

.zui-label {
  display: block;
  font-size: var(--zui-text-small);
  font-weight: 600;
  margin-bottom: var(--zui-space-2);
}

.zui-input {
  width: 100%;
  height: 44px;
  padding: 0 var(--zui-space-4);
  border: 1px solid var(--zui-outline);
  border-radius: var(--zui-radius-sm);
  background: var(--zui-surface);
  color: var(--zui-on-surface);
  font: inherit;
  font-size: var(--zui-text-small);
  outline: none;
  transition: border-color var(--zui-duration-fast) var(--zui-ease-out),
    box-shadow var(--zui-duration-fast) var(--zui-ease-out);
}

.zui-input::placeholder {
  color: var(--zui-on-surface-variant);
  opacity: 0.6;
}

.zui-input:focus {
  border-color: var(--zui-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--zui-primary) 20%, transparent);
}

.zui-hint {
  font-size: var(--zui-text-caption);
  color: var(--zui-on-surface-variant);
  margin-top: var(--zui-space-1);
}

.zui-check-row {
  display: flex;
  gap: var(--zui-space-6);
  flex-wrap: wrap;
}

.zui-check {
  display: inline-flex;
  align-items: center;
  gap: var(--zui-space-2);
  font-size: var(--zui-text-small);
  cursor: pointer;
  accent-color: var(--zui-primary);
}

.zui-check input {
  width: 18px;
  height: 18px;
}

/* 开关 */
.zui-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--zui-space-3);
  cursor: pointer;
  font-size: var(--zui-text-small);
}

.zui-switch input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.zui-switch-track {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  width: 48px;
  height: 28px;
  padding: 0 3px;
  border-radius: var(--zui-radius-full);
  background: var(--zui-surface-variant);
  border: 1px solid var(--zui-outline);
  transition: background-color var(--zui-duration-base) var(--zui-ease-out),
    border-color var(--zui-duration-base) var(--zui-ease-out);
}

.zui-switch-track::after {
  content: "";
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--zui-on-surface-variant);
  transition: transform var(--zui-duration-base) var(--zui-ease-spring),
    background-color var(--zui-duration-base) var(--zui-ease-out);
}

.zui-switch input:checked + .zui-switch-track {
  background: var(--zui-primary);
  border-color: var(--zui-primary);
}

.zui-switch input:checked + .zui-switch-track::after {
  transform: translateX(20px);
  background: var(--zui-on-primary);
}

.zui-switch input:focus-visible + .zui-switch-track {
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--zui-primary) 25%, transparent);
}

/* ---------- 动效展示 ---------- */
.zui-motion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--zui-space-4);
}

.zui-motion-box {
  height: 120px;
  border-radius: var(--zui-radius-md);
  background: var(--zui-primary-container);
  color: var(--zui-on-primary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--zui-font-mono);
  font-size: var(--zui-text-caption);
  cursor: pointer;
}

.zui-motion-base {
  transition: transform var(--zui-duration-base) var(--zui-ease-out);
}

.zui-motion-base:hover {
  transform: translateY(-6px);
}

.zui-motion-spring {
  transition: transform var(--zui-duration-slow) var(--zui-ease-spring);
}

.zui-motion-spring:hover {
  transform: scale(1.05);
}

.zui-motion-slow {
  transition: transform 1.2s var(--zui-ease-out), background-color 1.2s var(--zui-ease-out);
}

.zui-motion-slow:hover {
  transform: translateX(12px);
  background: var(--zui-tertiary-container);
  color: var(--zui-on-tertiary-container);
}

/* ---------- Toast ---------- */
.zui-toast {
  position: fixed;
  left: 50%;
  bottom: var(--zui-space-8);
  transform: translate(-50%, 16px);
  background: var(--zui-on-surface);
  color: var(--zui-surface);
  font-size: var(--zui-text-small);
  font-family: var(--zui-font-mono);
  padding: var(--zui-space-3) var(--zui-space-6);
  border-radius: var(--zui-radius-full);
  box-shadow: var(--zui-elevation-3);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--zui-duration-base) var(--zui-ease-out),
    transform var(--zui-duration-base) var(--zui-ease-out);
  z-index: 200;
}

.zui-toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- 页脚 ---------- */
.zui-footer {
  padding: var(--zui-space-12) 0;
  border-top: 1px solid var(--zui-outline-variant);
  color: var(--zui-on-surface-variant);
  font-size: var(--zui-text-small);
}

.zui-footer-inner {
  display: flex;
  justify-content: space-between;
  gap: var(--zui-space-4);
  flex-wrap: wrap;
}

/* ---------- 滚动显现 ---------- */
.zui-reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.65s var(--zui-ease-out), transform 0.65s var(--zui-ease-out);
  transition-delay: var(--zui-reveal-delay, 0ms);
}

.zui-reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .zui-nav {
    position: fixed;
    top: var(--zui-header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: var(--zui-space-4) var(--zui-space-6);
    background: var(--zui-surface-1);
    border-bottom: 1px solid var(--zui-outline-variant);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.38s var(--zui-ease-out), opacity 0.28s ease;
  }

  .zui-nav.open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .zui-menu-btn {
    display: inline-flex;
  }

  .zui-demo {
    padding: var(--zui-space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  body {
    animation: none;
  }

  .zui-hero-title,
  .zui-hero-sub,
  .zui-hero-actions {
    opacity: 1;
  }

  body.is-loaded .zui-hero-title,
  body.is-loaded .zui-hero-sub,
  body.is-loaded .zui-hero-actions {
    animation: none;
  }

  .zui-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}