/* ============================================
   设计基座 —— Bento Grid + 玻璃拟态
   背景：干净的大尺度柔光晕，为玻璃卡片提供可透视的底层
   ============================================ */

:root {
  /* 底层背景 */
  --bg-base: #f4f5f9;
  --bg-glow-1: rgba(99, 102, 241, 0.16);
  --bg-glow-2: rgba(45, 212, 191, 0.13);
  --bg-glow-3: rgba(244, 114, 182, 0.09);

  /* 玻璃层：半透明白 + 微弱边框 + 柔和阴影 */
  --glass-bg: rgba(255, 255, 255, 0.62);
  --glass-bg-hover: rgba(255, 255, 255, 0.78);
  --glass-border: rgba(255, 255, 255, 0.75);
  --glass-border-hover: rgba(255, 255, 255, 0.95);
  --glass-blur: 20px;

  /* 文字灰阶：自然过渡的四级层次 */
  --text-strong: #12141c;
  --text-body: #3a3f4d;
  --text-muted: #6b7285;
  --text-faint: #9aa0b0;

  /* 克制的高亮色，仅用于可交互与强调 */
  --accent: #5b5fd6;
  --accent-hover: #4a4ec4;
  --accent-soft: rgba(91, 95, 214, 0.1);

  --tag-bg: rgba(255, 255, 255, 0.72);
  --tag-border: rgba(120, 130, 160, 0.16);
  --tag-text: #4a5468;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  --shadow-glass: 0 4px 24px rgba(30, 35, 60, 0.06),
    0 1px 2px rgba(30, 35, 60, 0.04);
  --shadow-glass-hover: 0 12px 40px rgba(30, 35, 60, 0.1),
    0 2px 6px rgba(30, 35, 60, 0.05);
  --shadow-float: 0 20px 60px rgba(30, 35, 60, 0.16);

  /* 统一间距刻度 */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 72px;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --content-width: 1240px;

  /*
   * 卡片高度区间：note 至少展示两行，内容较多时自然增长到三行。
   * 上限需容纳双行模型标签、note、元信息与操作按钮，避免 flex 挤掉正文。
   */
  --card-min: 292px;
  --card-max: 360px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-base: #0c0e14;
    --bg-glow-1: rgba(99, 102, 241, 0.2);
    --bg-glow-2: rgba(45, 212, 191, 0.13);
    --bg-glow-3: rgba(244, 114, 182, 0.1);

    --glass-bg: rgba(255, 255, 255, 0.045);
    --glass-bg-hover: rgba(255, 255, 255, 0.075);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-border-hover: rgba(255, 255, 255, 0.18);

    --text-strong: #f2f4f8;
    --text-body: #c5cad6;
    --text-muted: #8d94a5;
    --text-faint: #656c7d;

    --accent: #8b8ff0;
    --accent-hover: #a0a4f5;
    --accent-soft: rgba(139, 143, 240, 0.14);

    --tag-bg: rgba(255, 255, 255, 0.06);
    --tag-border: rgba(255, 255, 255, 0.09);
    --tag-text: #a8b0c2;

    --shadow-glass: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-glass-hover: 0 12px 40px rgba(0, 0, 0, 0.42);
    --shadow-float: 0 20px 60px rgba(0, 0, 0, 0.6);
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-base);
  color: var(--text-body);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "cv02", "cv03", "cv04";
}

/* 背景柔光晕：三团大尺度渐变，固定不随滚动，给玻璃层提供折射内容 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 62% 48% at 12% 8%, var(--bg-glow-1), transparent 62%),
    radial-gradient(ellipse 52% 42% at 88% 22%, var(--bg-glow-2), transparent 60%),
    radial-gradient(ellipse 68% 52% at 45% 96%, var(--bg-glow-3), transparent 65%);
  pointer-events: none;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.16s ease;
}

a:hover {
  color: var(--accent-hover);
}

/* ============================================
   页面外壳
   ============================================ */

.page {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--sp-5) var(--sp-8);
}

/* ---------- 顶部导航 ---------- */

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-5) 0;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 15px;
  font-weight: 650;
  color: var(--text-strong);
  letter-spacing: -0.01em;
}

.nav-brand .brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  object-fit: cover;
  background: var(--tag-bg);
  box-shadow: 0 2px 8px rgba(30, 35, 60, 0.16);
}

/* 仓库入口紧随站名，用分隔线与更低的视觉权重表明它是附属信息 */
.repo-inline {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-left: var(--sp-1);
  padding-left: var(--sp-3);
  border-left: 1px solid var(--tag-border);
  font-size: 13px;
  font-weight: 450;
  color: var(--text-muted);
  transition: color 0.16s ease;
}

.repo-inline:hover {
  color: var(--accent);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

/* ---------- Hero 区 ---------- */

.hero {
  padding: var(--sp-6) 0 var(--sp-7);
  max-width: 760px;
}

.hero-title {
  margin: 0 0 var(--sp-4);
  font-size: clamp(34px, 5.6vw, 60px);
  font-weight: 780;
  line-height: 1.08;
  letter-spacing: -0.035em;
  /* 副标题由配置注入，整体走渐变，作为全站唯一的强视觉焦点 */
  background: linear-gradient(
    115deg,
    var(--text-strong) 8%,
    var(--accent) 52%,
    #4db6ac 96%
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--text-strong);
}

.hero-desc {
  margin: 0 0 var(--sp-5);
  font-size: 16.5px;
  line-height: 1.7;
  color: var(--text-muted);
  font-weight: 400;
  max-width: 620px;
}

.hero-desc strong {
  color: var(--text-body);
  font-weight: 600;
}

.hero-stats {
  display: flex;
  gap: var(--sp-6);
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-value {
  font-size: 26px;
  font-weight: 720;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-faint);
  letter-spacing: 0.01em;
}

/* ---------- 玻璃通用类 ---------- */

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass);
}

/* ---------- 工具栏 ---------- */

.toolbar {
  display: flex;
  gap: var(--sp-3);
  align-items: center;
  margin-bottom: var(--sp-5);
  flex-wrap: wrap;
  position: sticky;
  top: var(--sp-3);
  z-index: 10;
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 260px;
}

.search-box input {
  width: 100%;
  padding: 12px 16px 12px 42px;
  font-size: 14.5px;
  font-family: inherit;
  font-weight: 450;
  color: var(--text-strong);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-glass);
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s, background 0.18s;
}

.search-box input::placeholder {
  color: var(--text-faint);
  font-weight: 400;
}

.search-box input:focus {
  background: var(--glass-bg-hover);
  border-color: var(--accent);
  box-shadow: var(--shadow-glass), 0 0 0 3.5px var(--accent-soft);
}

.search-box .search-icon {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-faint);
  pointer-events: none;
}

.result-hint {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-faint);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  font-size: 14px;
  font-family: inherit;
  font-weight: 560;
  letter-spacing: -0.005em;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.18s, border-color 0.18s, box-shadow 0.18s,
    transform 0.12s;
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 10px rgba(91, 95, 214, 0.26);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  box-shadow: 0 4px 16px rgba(91, 95, 214, 0.34);
}

.btn-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  border-color: var(--glass-border);
  color: var(--text-body);
  box-shadow: var(--shadow-glass);
}

.btn-glass:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  color: var(--text-strong);
}

/* ---------- 空状态 ---------- */

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--sp-8) var(--sp-4);
  color: var(--text-faint);
  font-size: 15px;
}

/* ---------- 页脚 ---------- */

.site-footer {
  margin-top: var(--sp-8);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--tag-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-4);
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-faint);
}

.site-footer a {
  color: var(--text-muted);
}

.site-footer a:hover {
  color: var(--accent);
}

/* ============================================
   投稿弹窗
   ============================================ */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 18, 30, 0.42);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--sp-5);
  overflow-y: auto;
  z-index: 100;
  animation: fade-in 0.2s ease;
}

.modal-backdrop[hidden] {
  display: none;
}

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

@keyframes slide-up {
  from { opacity: 0; transform: translateY(12px) scale(0.985); }
  to { opacity: 1; transform: none; }
}

.modal {
  background: var(--glass-bg-hover);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-float);
  width: 100%;
  max-width: 580px;
  margin: auto;
  animation: slide-up 0.26s cubic-bezier(0.2, 0.8, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  .modal {
    background: rgba(28, 32, 44, 0.88);
  }
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-5) var(--sp-5) var(--sp-4);
  border-bottom: 1px solid var(--tag-border);
}

.modal-header h2 {
  margin: 0 0 2px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-strong);
}

.modal-header p {
  margin: 0;
  font-size: 13.5px;
  color: var(--text-muted);
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-faint);
  padding: 6px;
  line-height: 0;
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}

.modal-close:hover {
  color: var(--text-strong);
  background: var(--accent-soft);
}

.modal-body {
  padding: var(--sp-5);
}

.form-field {
  margin-bottom: var(--sp-5);
}

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

.form-field label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--text-strong);
  margin-bottom: var(--sp-2);
}

.form-field .required {
  color: #e0574f;
  margin-left: 2px;
}

.form-field .hint {
  display: block;
  font-weight: 400;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-faint);
  margin-top: 3px;
}

.form-field input[type="text"],
.form-field input[type="url"],
.form-field textarea {
  width: 100%;
  padding: 10px 13px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text-strong);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s, background 0.18s;
  resize: vertical;
}

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

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3.5px var(--accent-soft);
}

.prefix-input {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--tag-border);
  border-radius: var(--radius-md);
  background: var(--tag-bg);
  overflow: hidden;
  transition: border-color 0.18s, box-shadow 0.18s;
}

.prefix-input:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3.5px var(--accent-soft);
}

.prefix-input span {
  display: flex;
  align-items: center;
  padding: 0 2px 0 13px;
  font-size: 13.5px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  user-select: none;
}

.prefix-input input {
  border: none !important;
  background: none !important;
  box-shadow: none !important;
  padding-left: 0 !important;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--sp-2);
  padding: var(--sp-4) var(--sp-5);
  border-top: 1px solid var(--tag-border);
}

.demo-note {
  margin: 0 0 var(--sp-5);
  padding: var(--sp-3) var(--sp-4);
  background: var(--accent-soft);
  border: 1px solid var(--tag-border);
  border-radius: var(--radius-md);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
}

/* ---------- 反馈弹窗 ---------- */

.feedback-modal {
  max-width: 460px;
}

.feedback-text {
  margin: 0 0 var(--sp-3);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-body);
}

.feedback-text:last-child {
  margin-bottom: 0;
}

.feedback-text strong {
  color: var(--text-strong);
  font-weight: 620;
}

/* ---------- 投稿登录门禁 ---------- */

.auth-gate {
  margin-bottom: var(--sp-5);
}

.auth-gate[hidden] {
  display: none;
}

.auth-gate-notice {
  padding: var(--sp-4);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--sp-4);
}

.auth-gate-notice h3 {
  margin: 0 0 var(--sp-2);
  font-size: 14px;
  font-weight: 620;
  color: var(--text-strong);
}

.auth-gate-notice ul {
  margin: 0;
  padding-left: 1.15em;
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-muted);
}

.auth-gate-notice strong {
  color: var(--text-body);
  font-weight: 600;
}

.auth-login-btn {
  width: 100%;
  justify-content: center;
}

.auth-gate-hint {
  margin: var(--sp-2) 0 0;
  text-align: center;
  font-size: 12.5px;
  color: var(--text-faint);
}

/* ---------- 登录状态条 ---------- */

.auth-status {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  margin-bottom: var(--sp-5);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: var(--radius-md);
  font-size: 13.5px;
}

.auth-status[hidden] {
  display: none;
}

.auth-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--glass-bg);
}

.auth-login-name {
  flex: 1;
  color: var(--text-muted);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.auth-login-name strong {
  color: var(--text-strong);
  font-weight: 620;
}

.auth-logout {
  background: none;
  border: none;
  padding: 2px 4px;
  font-family: inherit;
  font-size: 13px;
  color: var(--text-faint);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color 0.15s;
}

.auth-logout:hover {
  color: var(--accent);
}

/* ---------- 表单禁用态 ---------- */

#submit-fields {
  margin: 0;
  padding: 0;
  border: none;
  min-width: 0;
}

/* 未登录时降低对比度，明确表达「需先登录」而非「加载失败」 */
#submit-fields:disabled {
  opacity: 0.45;
  /* 保留指针事件以显示 not-allowed，比完全无响应更易理解 */
  cursor: not-allowed;
}

#submit-fields:disabled input,
#submit-fields:disabled textarea {
  cursor: not-allowed;
}

/* ---------- 人机验证 ---------- */

.turnstile-slot {
  margin-top: var(--sp-4);
  min-height: 65px;
  display: flex;
  justify-content: center;
}

.turnstile-slot:empty {
  min-height: 0;
}

/* ---------- 提交结果提示 ---------- */

.submit-alert {
  margin-top: var(--sp-4);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-md);
  font-size: 13.5px;
  line-height: 1.65;
  border: 1px solid transparent;
}

.submit-alert[hidden] {
  display: none;
}

.submit-alert a {
  font-weight: 560;
  text-decoration: underline;
}

.submit-alert.is-success {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.28);
  color: #0f7a5a;
}

.submit-alert.is-error {
  background: rgba(224, 87, 79, 0.09);
  border-color: rgba(224, 87, 79, 0.26);
  color: #b8433c;
}

.submit-alert.is-warn {
  background: rgba(217, 131, 36, 0.1);
  border-color: rgba(217, 131, 36, 0.26);
  color: #9a5e14;
}

@media (prefers-color-scheme: dark) {
  .submit-alert.is-success {
    color: #5fd4aa;
  }

  .submit-alert.is-error {
    color: #f08a83;
  }

  .submit-alert.is-warn {
    color: #f0b25e;
  }
}

/* ---------- 表单字段的即时反馈 ---------- */

.field-feedback {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-faint);
}

.field-feedback:empty {
  display: none;
}

.field-feedback code {
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  color: var(--tag-text);
}

.field-feedback.is-error {
  color: #e0574f;
}

.field-feedback.is-warn {
  color: #d98324;
}

.field-feedback strong {
  font-weight: 620;
}

/* ---------- 响应式 ---------- */

@media (max-width: 720px) {
  .page {
    padding: 0 var(--sp-4) var(--sp-7);
  }

  /* 三个操作按钮在窄屏会挤爆，允许换行并缩小内边距 */
  .site-nav {
    flex-wrap: wrap;
    gap: var(--sp-3);
  }

  .nav-brand {
    flex-wrap: wrap;
  }

  .repo-inline {
    font-size: 12.5px;
    padding-left: var(--sp-2);
    margin-left: 0;
  }

  .nav-actions {
    flex-wrap: wrap;
  }

  .nav-actions .btn {
    padding: 8px 12px;
    font-size: 13px;
  }

  .hero {
    padding: var(--sp-4) 0 var(--sp-6);
  }

  .hero-stats {
    gap: var(--sp-5);
  }

  .modal-backdrop {
    padding: var(--sp-3);
  }
}

/* 尊重减弱动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}