/* KUAI.ME网络笔记本 — 现代排版 · 流体字号 · 多主题 */
:root {
  /* 站内自带 woff2 字体优先，保留系统字体作为兜底 */
  --font-sans: "Noto Sans SC Variable", "Noto Sans SC", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", system-ui, sans-serif;
  --font-display: "Noto Sans SC Variable", "Noto Sans SC", "Segoe UI", "PingFang SC", "Microsoft YaHei UI", sans-serif;
  --font-editor: "Noto Sans SC Variable", "Noto Sans SC", "Segoe UI", "PingFang SC", "Microsoft YaHei UI", sans-serif;
  --font-serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", monospace;

  --text-2xs: clamp(0.625rem, 0.58rem + 0.2vw, 0.6875rem);
  --text-xs: clamp(0.6875rem, 0.64rem + 0.22vw, 0.78125rem);
  --text-sm: clamp(0.78125rem, 0.72rem + 0.3vw, 0.875rem);
  --text-base: clamp(0.875rem, 0.8rem + 0.38vw, 1rem);
  --text-md: clamp(0.9375rem, 0.86rem + 0.42vw, 1.0625rem);
  --text-lg: clamp(1.03125rem, 0.92rem + 0.55vw, 1.1875rem);
  --text-xl: clamp(1.125rem, 0.98rem + 0.7vw, 1.375rem);
  --text-2xl: clamp(1.25rem, 1.02rem + 1vw, 1.625rem);

  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-normal: 1.58;
  --leading-relaxed: 1.72;
  --leading-loose: 1.88;

  --radius-sm: 7px;
  --radius-md: 9px;
  --radius-lg: 12px;
  --radius-xl: 14px;
  --shadow-soft: 0 12px 40px rgba(0, 0, 0, 0.06);
  --shadow-float: 0 24px 64px rgba(0, 0, 0, 0.1);
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.42s cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 58px;
  --sidebar-w: min(292px, 88vw);
  /* 整页主栏最大宽度（大屏居中，不铺满） */
  --layout-max: min(70rem, 100%);
  /* 正文区域理想行长（在已限宽的编辑栏内再控一行字数） */
  --reading-max: min(48rem, 100%);
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
}

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

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

body {
  margin: 0;
  min-height: 100dvh;
  min-height: 100svh;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text);
  background: var(--bg-base);
  background-image: var(--bg-gradient, none);
  transition: background var(--transition-smooth), color var(--transition-fast);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern" 1, "liga" 1;
}

body.zen-app {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: max(0.75rem, env(safe-area-inset-left));
  padding-right: max(0.75rem, env(safe-area-inset-right));
  box-sizing: border-box;
}

body.zen-app > .app-header,
body.zen-app > .page-stack {
  width: 100%;
  max-width: var(--layout-max);
  margin-inline: auto;
  box-sizing: border-box;
}

@media (min-width: 900px) {
  body.zen-app {
    padding-left: max(1.25rem, env(safe-area-inset-left));
    padding-right: max(1.25rem, env(safe-area-inset-right));
    padding-bottom: max(0.5rem, env(safe-area-inset-bottom));
  }

  body.zen-app > .page-stack {
    margin-top: 0.4rem;
  }
}

body.zen-app::before {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

.zen-app > * {
  position: relative;
  z-index: 1;
}

.page-stack {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

body.search-open {
  overflow: hidden;
}

/* —— 清新自然系（默认薄荷） —— */
body[data-template="mint"] {
  --text: #1b4332;
  --text-muted: #52796f;
  --bg-base: #e8f3ee;
  --bg-elevated: rgba(255, 255, 255, 0.88);
  --bg-sidebar: #dceee6;
  --border: rgba(45, 106, 79, 0.12);
  --accent: #2d6a4f;
  --accent-soft: rgba(45, 106, 79, 0.12);
  --brand-glow: #40916c;
  --bg-gradient: linear-gradient(165deg, #f0faf6 0%, #d8ebe2 45%, #cfe8dc 100%);
}
body[data-template="mint"] .brand-mark {
  background: linear-gradient(135deg, #2d6a4f, #74c69d);
}

body[data-template="bamboo"] {
  --text: #1d2e1f;
  --text-muted: #5c6b5e;
  --bg-base: #eef6ef;
  --bg-elevated: rgba(255, 255, 255, 0.9);
  --bg-sidebar: #e0ebe2;
  --border: rgba(58, 90, 64, 0.1);
  --accent: #3a5a40;
  --accent-soft: rgba(58, 90, 64, 0.1);
  --brand-glow: #588157;
  --bg-gradient: radial-gradient(ellipse 90% 50% at 0% 0%, rgba(136, 179, 120, 0.25), transparent 55%),
    linear-gradient(180deg, #f4faf4, #e3efe5);
}
body[data-template="bamboo"] .brand-mark {
  background: linear-gradient(135deg, #3a5a40, #a3c9a8);
}

body[data-template="lavender"] {
  --text: #2d2640;
  --text-muted: #6b6280;
  --bg-base: #f3f0fa;
  --bg-elevated: rgba(255, 255, 255, 0.92);
  --bg-sidebar: #e8e2f2;
  --border: rgba(124, 111, 163, 0.12);
  --accent: #7c6fa3;
  --accent-soft: rgba(124, 111, 163, 0.12);
  --brand-glow: #9b8ab8;
  --bg-gradient: linear-gradient(145deg, #faf8ff 0%, #ebe4f5 50%, #e2daf0 100%);
}
body[data-template="lavender"] .brand-mark {
  background: linear-gradient(135deg, #7c6fa3, #c4b5e0);
}

body[data-template="cloud"] {
  --text: #2c3544;
  --text-muted: #6b7c93;
  --bg-base: #eef2f7;
  --bg-elevated: rgba(255, 255, 255, 0.94);
  --bg-sidebar: #e2e8f0;
  --border: rgba(107, 124, 147, 0.12);
  --accent: #5b7c99;
  --accent-soft: rgba(91, 124, 153, 0.1);
  --brand-glow: #8aa4bf;
  --bg-gradient: radial-gradient(ellipse 100% 80% at 50% -10%, rgba(255, 255, 255, 0.9), transparent 50%),
    linear-gradient(180deg, #f5f8fc, #e2e8f0);
}
body[data-template="cloud"] .brand-mark {
  background: linear-gradient(135deg, #7b8fa3, #cbd5e1);
}

body[data-template="seaside"] {
  --text: #143d52;
  --text-muted: #4a7a94;
  --bg-base: #e8f4fc;
  --bg-elevated: rgba(255, 255, 255, 0.9);
  --bg-sidebar: #d4e9f7;
  --border: rgba(61, 126, 174, 0.14);
  --accent: #2d6a8f;
  --accent-soft: rgba(45, 106, 143, 0.12);
  --brand-glow: #4a9bc7;
  --bg-gradient: linear-gradient(170deg, #f0f9ff 0%, #dbeafe 40%, #cce5f5 100%);
}
body[data-template="seaside"] .brand-mark {
  background: linear-gradient(135deg, #2d6a8f, #7dd3fc);
}

body[data-template="meadow"] {
  --text: #2d3a1f;
  --text-muted: #5d6b47;
  --bg-base: #f2f7e8;
  --bg-elevated: rgba(255, 255, 255, 0.9);
  --bg-sidebar: #e2ebd5;
  --border: rgba(107, 142, 35, 0.12);
  --accent: #5c7c1f;
  --accent-soft: rgba(92, 124, 31, 0.12);
  --brand-glow: #8fb339;
  --bg-gradient: radial-gradient(ellipse 80% 60% at 100% 20%, rgba(180, 214, 120, 0.35), transparent 50%),
    #f2f7e8;
}
body[data-template="meadow"] .brand-mark {
  background: linear-gradient(135deg, #5c7c1f, #b5d96f);
}

body[data-template="rain"] {
  --text: #2a3d45;
  --text-muted: #5c7a8a;
  --bg-base: #e9eef2;
  --bg-elevated: rgba(255, 255, 255, 0.88);
  --bg-sidebar: #dde5ea;
  --border: rgba(92, 122, 138, 0.12);
  --accent: #4a6f82;
  --accent-soft: rgba(74, 111, 130, 0.1);
  --brand-glow: #7a9eae;
  --bg-gradient: linear-gradient(180deg, #f0f4f7 0%, #dfe8ee 100%);
}
body[data-template="rain"] .brand-mark {
  background: linear-gradient(135deg, #4a6f82, #a8c5d4);
}

body[data-template="peach"] {
  --text: #4a3028;
  --text-muted: #8a6f65;
  --bg-base: #fff5f0;
  --bg-elevated: rgba(255, 255, 255, 0.92);
  --bg-sidebar: #ffe8de;
  --border: rgba(224, 122, 95, 0.14);
  --accent: #c45c3e;
  --accent-soft: rgba(196, 92, 62, 0.1);
  --brand-glow: #e07a5f;
  --bg-gradient: radial-gradient(ellipse 70% 50% at 80% 0%, rgba(255, 200, 170, 0.5), transparent 55%),
    #fff5f0;
}
body[data-template="peach"] .brand-mark {
  background: linear-gradient(135deg, #c45c3e, #f4c4a8);
}

body[data-template="sage"] {
  --text: #2d3834;
  --text-muted: #5f7169;
  --bg-base: #eef2ef;
  --bg-elevated: rgba(255, 255, 255, 0.9);
  --bg-sidebar: #dfe8e3;
  --border: rgba(132, 165, 157, 0.15);
  --accent: #5a7d72;
  --accent-soft: rgba(90, 125, 114, 0.1);
  --brand-glow: #84a59d;
  --bg-gradient: linear-gradient(160deg, #f6faf8 0%, #e0ebe6 100%);
}
body[data-template="sage"] .brand-mark {
  background: linear-gradient(135deg, #5a7d72, #a8c5bc);
}

body[data-template="dawn"] {
  --text: #3d3028;
  --text-muted: #8a7568;
  --bg-base: #fff8f2;
  --bg-elevated: rgba(255, 255, 255, 0.9);
  --bg-sidebar: #ffeee0;
  --border: rgba(244, 162, 97, 0.18);
  --accent: #e07a3d;
  --accent-soft: rgba(224, 122, 61, 0.12);
  --brand-glow: #f4a261;
  --bg-gradient: linear-gradient(185deg, #fffaf5 0%, #ffe8d6 35%, #ffd6ba 100%);
}
body[data-template="dawn"] .brand-mark {
  background: linear-gradient(135deg, #e07a3d, #f9c784);
}

/* —— 模板：夜幕 —— */
body[data-template="noir"] {
  --text: #e8eaef;
  --text-muted: #8b92a8;
  --bg-base: #0c0e14;
  --bg-elevated: rgba(22, 26, 36, 0.85);
  --bg-sidebar: rgba(14, 17, 24, 0.92);
  --border: rgba(255, 255, 255, 0.08);
  --accent: #7c9cff;
  --accent-soft: rgba(124, 156, 255, 0.15);
  --brand-glow: #5b7cff;
  --bg-gradient: radial-gradient(ellipse 120% 80% at 10% -20%, rgba(91, 124, 255, 0.18), transparent 50%),
    radial-gradient(ellipse 80% 60% at 100% 100%, rgba(140, 80, 200, 0.12), transparent 45%);
}

/* —— 模板：极光 —— */
body[data-template="aurora"] {
  --text: #f0f4fc;
  --text-muted: #9aa3bc;
  --bg-base: #0a0f1a;
  --bg-elevated: rgba(20, 30, 48, 0.75);
  --bg-sidebar: rgba(12, 20, 36, 0.88);
  --border: rgba(120, 220, 255, 0.12);
  --accent: #5eead4;
  --accent-soft: rgba(94, 234, 212, 0.12);
  --brand-glow: #38bdf8;
  --bg-gradient: linear-gradient(165deg, #0c1929 0%, #1a1035 40%, #0d2137 100%);
}

/* —— 模板：素纸 —— */
body[data-template="paper"] {
  --text: #1a1d26;
  --text-muted: #5c6370;
  --bg-base: #f4f2ed;
  --bg-elevated: #ffffff;
  --bg-sidebar: #ebe8e1;
  --border: rgba(0, 0, 0, 0.08);
  --accent: #c45c26;
  --accent-soft: rgba(196, 92, 38, 0.1);
  --brand-glow: #e07a3d;
  --bg-gradient: linear-gradient(180deg, #faf9f6 0%, #ebe8e1 100%);
}

body[data-template="paper"] .brand-mark {
  background: linear-gradient(135deg, #c45c26, #e8a87c);
}

/* —— 模板：余烬 —— */
body[data-template="ember"] {
  --text: #f5ebe3;
  --text-muted: #b8a99a;
  --bg-base: #1a1410;
  --bg-elevated: rgba(40, 32, 28, 0.9);
  --bg-sidebar: rgba(28, 22, 18, 0.95);
  --border: rgba(255, 160, 100, 0.12);
  --accent: #f0a060;
  --accent-soft: rgba(240, 160, 96, 0.14);
  --brand-glow: #ff8c42;
  --bg-gradient: radial-gradient(ellipse at 80% 0%, rgba(255, 120, 60, 0.15), transparent 50%),
    #1a1410;
}

/* —— 模板：深海 —— */
body[data-template="ocean"] {
  --text: #e4f0f5;
  --text-muted: #7a9aaa;
  --bg-base: #061a22;
  --bg-elevated: rgba(12, 40, 52, 0.88);
  --bg-sidebar: rgba(6, 28, 38, 0.94);
  --border: rgba(80, 200, 220, 0.15);
  --accent: #4fd1c5;
  --accent-soft: rgba(79, 209, 197, 0.12);
  --brand-glow: #38b2ac;
  --bg-gradient: radial-gradient(ellipse 100% 60% at 50% 120%, rgba(30, 120, 140, 0.35), transparent 55%),
    #061a22;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-sm);
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4, 1rem);
  min-height: calc(var(--header-h) + env(safe-area-inset-top, 0px));
  padding: max(0.5rem, env(safe-area-inset-top)) max(1.15rem, env(safe-area-inset-right)) 0.65rem
    max(1.15rem, env(safe-area-inset-left));
  background: color-mix(in srgb, var(--bg-elevated) 88%, transparent);
  backdrop-filter: blur(22px) saturate(1.12);
  -webkit-backdrop-filter: blur(22px) saturate(1.12);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 55%, transparent);
  box-shadow: 0 1px 0 color-mix(in srgb, var(--border) 25%, transparent), 0 12px 40px -18px rgba(0, 0, 0, 0.07);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.brand-link {
  text-decoration: none;
  color: inherit;
}

.brand-link:hover,
.brand-link:active,
.brand-link:focus,
.brand-link:visited {
  text-decoration: none;
  color: inherit;
}

.brand-avatar {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 4px 16px var(--accent-soft), 0 0 0 1px rgba(255, 255, 255, 0.06) inset;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}

.brand-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.brand-mark--fallback {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 0;
  background: linear-gradient(145deg, var(--brand-glow), var(--accent));
}

.brand-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: var(--leading-tight);
}

.brand-tagline {
  margin: 0.12rem 0 0;
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 40vw;
}

@media (max-width: 380px) {
  .brand-tagline {
    display: none;
  }
}

@media (min-width: 640px) {
  .brand-tagline {
    max-width: none;
  }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
  position: relative;
}

.header-actions__menu-btn {
  display: none !important;
}

@media (max-width: 899px) {
  .header-actions__menu-btn {
    display: grid !important;
  }

  .header-actions__cluster-wrap {
    position: fixed;
    inset: 0;
    z-index: 55;
    display: none;
    justify-content: flex-end;
    align-items: flex-start;
    padding: calc(var(--header-h) + env(safe-area-inset-top, 0px) + 6px) max(10px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom))
      max(10px, env(safe-area-inset-left));
    pointer-events: none;
    visibility: hidden;
    opacity: 0;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
  }

  .header-actions__cluster-wrap.is-open {
    display: flex;
    pointer-events: auto;
    visibility: visible;
    opacity: 1;
  }

  .header-actions__scrim {
    position: absolute;
    inset: 0;
    background: rgba(6, 9, 16, 0.54);
    backdrop-filter: blur(7px);
    -webkit-backdrop-filter: blur(7px);
  }

  .header-actions__cluster {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.4rem;
    min-width: min(13.5rem, calc(100vw - 2rem));
    padding: 0.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid color-mix(in srgb, var(--border) 65%, transparent);
    background: var(--bg-elevated);
    backdrop-filter: blur(18px) saturate(1.08);
    -webkit-backdrop-filter: blur(18px) saturate(1.08);
    box-shadow: var(--shadow-float);
  }

  .header-actions__cluster .btn-icon {
    width: 100%;
    min-height: 44px;
    justify-content: flex-start;
    padding-inline: 0.72rem;
    display: flex;
    flex-direction: row;
    gap: 0.58rem;
    color: var(--text);
    font-weight: 600;
  }

  .header-actions__cluster .btn-icon::after {
    content: attr(aria-label);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    line-height: 1.3;
    color: var(--text);
    letter-spacing: 0.01em;
    white-space: nowrap;
  }

  .header-actions__cluster .theme-anchor {
    width: 100%;
  }

  .header-actions__cluster .theme-anchor > .btn-icon {
    width: 100%;
  }

  .header-actions__cluster .theme-popover {
    right: 0;
    left: 0;
    width: 100%;
    max-width: none;
  }
}

@media (min-width: 900px) {
  .header-actions__menu-btn {
    display: none !important;
  }

  .header-actions__cluster-wrap {
    display: contents;
  }

  .header-actions__scrim {
    display: none !important;
  }

  .header-actions__cluster {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.35rem;
  }
}

body.header-menu-open {
  overflow: hidden;
}

@media (min-width: 900px) {
  body.header-menu-open {
    overflow: unset;
  }
}

.theme-anchor {
  position: relative;
}

.theme-popover {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: min(292px, calc(100vw - 24px - env(safe-area-inset-right, 0px) - env(safe-area-inset-left, 0px)));
  max-height: min(70dvh, 420px);
  overflow-y: auto;
  padding: 0.55rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  backdrop-filter: blur(18px) saturate(1.1);
  -webkit-backdrop-filter: blur(18px) saturate(1.1);
  box-shadow: var(--shadow-float);
  z-index: 200;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.35rem;
  -webkit-overflow-scrolling: touch;
}

.theme-popover[hidden] {
  display: none !important;
}

.theme-chip {
  font-family: inherit;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 0.52rem 0.42rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.theme-chip:hover {
  color: var(--text);
  background: var(--accent-soft);
  border-color: var(--accent);
}

.theme-chip.is-current {
  color: var(--text);
  background: var(--accent-soft);
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.btn-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--bg-elevated) 40%, transparent);
  color: var(--text);
  font-size: var(--text-md);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.btn-zen-icon {
  color: var(--text-muted);
}

.btn-zen-icon:hover {
  color: var(--text);
  background: var(--accent-soft);
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-soft);
}

.btn-icon:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.btn-icon:active {
  transform: scale(0.96);
}

.btn-icon:disabled {
  opacity: 0.4;
  pointer-events: none;
}

.btn-emoji {
  font-size: var(--text-xl);
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-style: normal;
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
}

@media (max-width: 360px) {
  .btn-icon {
    width: 38px;
    height: 38px;
  }
  .header-actions {
    gap: 0.25rem;
  }
}

.btn-crypto-vault {
  color: var(--accent);
}
.btn-crypto-vault.is-locked {
  color: var(--brand-glow);
  animation: crypto-pulse 2.4s ease-in-out infinite;
}
.btn-crypto-vault.is-secured {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: var(--accent);
}
@media (prefers-reduced-motion: reduce) {
  .btn-crypto-vault.is-locked {
    animation: none;
  }
}

#btn-sidebar-toggle {
  display: grid;
}
@media (min-width: 900px) {
  #btn-sidebar-toggle {
    display: none;
  }
}

.app-shell {
  display: flex;
  flex: 1;
  min-height: 0;
  position: relative;
  overflow: hidden;
  background: transparent;
}

@media (min-width: 900px) {
  .page-stack .app-shell {
    margin-left: 0;
    margin-right: 0;
    margin-bottom: max(8px, env(safe-area-inset-bottom));
    border-radius: var(--radius-xl);
    border: 1px solid color-mix(in srgb, var(--border) 42%, transparent);
    box-shadow: 0 16px 48px -20px rgba(0, 0, 0, 0.07);
    background: color-mix(in srgb, var(--bg-elevated) 38%, transparent);
    backdrop-filter: blur(14px) saturate(1.05);
    -webkit-backdrop-filter: blur(14px) saturate(1.05);
  }
}

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  position: relative;
  border-right: none;
  background: transparent;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

@media (min-width: 900px) {
  .sidebar::after {
    content: "";
    position: absolute;
    top: 5%;
    bottom: 5%;
    right: 0;
    width: 1px;
    background: linear-gradient(
      180deg,
      transparent 0%,
      color-mix(in srgb, var(--border) 55%, transparent) 22%,
      color-mix(in srgb, var(--border) 55%, transparent) 78%,
      transparent 100%
    );
    pointer-events: none;
  }
}

@media (max-width: 899px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: calc(var(--header-h) + env(safe-area-inset-top, 0px));
    bottom: 0;
    z-index: 200;
    max-width: var(--sidebar-w);
    transform: translateX(-105%);
    box-shadow: none;
    background: var(--bg-sidebar);
    padding-bottom: max(0.75rem, env(safe-area-inset-bottom, 0px));
    pointer-events: auto;
  }
  .sidebar.is-open {
    transform: translateX(0);
    box-shadow: var(--shadow-soft);
  }
}

.sidebar-top {
  padding: 0.85rem 0.7rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-bottom: none;
  box-shadow: 0 1px 0 color-mix(in srgb, var(--border) 38%, transparent);
}

.sidebar-actions {
  display: flex;
  align-items: stretch;
  gap: 6px;
  min-width: 0;
}

.category-tabs {
  display: flex;
  flex-direction: column;
  gap: 0.36rem;
  overflow-y: auto;
  padding: 0.2rem 0.12rem 0.08rem;
  -webkit-overflow-scrolling: touch;
}

.category-tab {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.58rem;
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--border) 88%, transparent);
  background: color-mix(in srgb, var(--bg-elevated) 72%, transparent);
  color: var(--text-muted);
  font-size: var(--text-xs);
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast),
    box-shadow var(--transition-fast);
}

.category-tab__name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.category-tab__meta {
  font-size: var(--text-2xs);
  font-weight: 600;
  opacity: 0.9;
}

.category-tab__arrow {
  font-size: var(--text-xs);
  opacity: 0.85;
}

.category-tab:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--accent) 70%, var(--border));
  background: color-mix(in srgb, var(--accent-soft) 62%, var(--bg-elevated));
}

.category-tab.is-active {
  color: var(--accent);
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent-soft) 78%, var(--bg-elevated));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 25%, transparent);
}

.sidebar-actions .btn-primary.btn-new-article {
  flex: 1;
  min-width: 0;
  width: auto;
}

.btn-sidebar-icon {
  flex-shrink: 0;
  width: 40px;
  min-width: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.btn-sidebar-icon .btn-emoji {
  font-size: 1.05rem;
}

.btn-sidebar-icon:hover {
  color: var(--text);
  background: var(--accent-soft);
  border-color: var(--accent);
}

.btn-sidebar-icon.is-active {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: var(--accent);
}

.btn-sidebar-icon:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* —— 弹出式搜索 —— */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 130;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  padding-left: max(1.25rem, env(safe-area-inset-left));
  padding-right: max(1.25rem, env(safe-area-inset-right));
  padding-top: max(1.25rem, env(safe-area-inset-top, 0px));
  padding-bottom: max(1.25rem, env(safe-area-inset-bottom, 0px));
  pointer-events: none;
}

.search-overlay[hidden] {
  display: none !important;
}

.search-overlay:not([hidden]) {
  pointer-events: auto;
}

.search-overlay__scrim {
  position: absolute;
  inset: 0;
  background: rgba(15, 18, 28, 0.42);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  cursor: pointer;
  animation: search-scrim-in 0.35s var(--transition-smooth) both;
}

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

.search-sheet {
  position: relative;
  width: min(540px, 100%);
  max-height: min(88dvh, 680px);
  padding: 1.35rem 1.45rem 1.2rem;
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--border) 50%, transparent);
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  backdrop-filter: blur(26px) saturate(1.12);
  -webkit-backdrop-filter: blur(26px) saturate(1.12);
  box-shadow: var(--shadow-float), 0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  animation: search-sheet-in 0.42s cubic-bezier(0.22, 1, 0.36, 1) both;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

@keyframes search-sheet-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.search-sheet__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
  flex-shrink: 0;
}

.search-sheet__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
  line-height: var(--leading-tight);
}

.search-sheet__close {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.search-sheet__close:hover {
  color: var(--text);
  background: var(--accent-soft);
  transform: scale(1.04);
}

.search-sheet__subtitle {
  margin: 0 0 0.95rem;
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: var(--leading-normal);
  flex-shrink: 0;
}

.search-sheet__field {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-lg);
  border: 1.5px solid color-mix(in srgb, var(--border) 65%, transparent);
  background: color-mix(in srgb, var(--bg-sidebar) 45%, var(--bg-elevated));
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  flex-shrink: 0;
}

.search-sheet__field:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.search-sheet__icon {
  flex-shrink: 0;
  font-size: var(--text-lg);
  line-height: 1;
  opacity: 0.9;
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
}

.search-sheet__input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  font-family: var(--font-sans);
  font-size: var(--text-md);
  font-weight: 500;
  color: var(--text);
  outline: none;
}

.search-sheet__input::placeholder {
  color: var(--text-muted);
  font-weight: 400;
  opacity: 0.88;
}

.search-sheet__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.85rem;
  padding-top: 0.8rem;
  flex-shrink: 0;
  background: linear-gradient(90deg, transparent 0%, color-mix(in srgb, var(--border) 45%, transparent) 12%, color-mix(in srgb, var(--border) 45%, transparent) 88%, transparent 100%) center top / 100% 1px no-repeat;
}

.search-sheet__count {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.search-sheet__clear {
  font-family: inherit;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.search-sheet__clear:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.search-sheet__results-wrap {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  margin-top: 0.65rem;
  padding-top: 0.85rem;
  background: linear-gradient(90deg, transparent 0%, color-mix(in srgb, var(--border) 40%, transparent) 10%, color-mix(in srgb, var(--border) 40%, transparent) 90%, transparent 100%) center top / 100% 1px no-repeat;
}

.search-sheet__results-label {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0.85;
}

.search-sheet__results {
  flex: 1 1 auto;
  min-height: 6.5rem;
  max-height: min(36vh, 300px);
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-right: 0.15rem;
  margin-right: -0.15rem;
}

.search-sheet__placeholder {
  margin: 0;
  padding: 1.25rem 0.5rem 0.75rem;
  text-align: center;
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--text-muted);
  opacity: 0.92;
}

.search-sheet__empty {
  margin: 0;
  padding: 1.1rem 0.5rem;
  text-align: center;
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: var(--leading-normal);
}

.search-result-card {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.28rem;
  width: 100%;
  text-align: left;
  padding: 0.72rem 0.85rem;
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--border) 55%, transparent);
  background: color-mix(in srgb, var(--bg-elevated) 70%, transparent);
  color: inherit;
  font: inherit;
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.search-result-card:hover {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
  background: color-mix(in srgb, var(--accent-soft) 55%, var(--bg-elevated));
  box-shadow: 0 6px 20px -8px color-mix(in srgb, var(--accent) 25%, transparent);
  transform: translateY(-1px);
}

.search-result-card:active {
  transform: translateY(0);
}

.search-result-card.is-active {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  background: color-mix(in srgb, var(--accent-soft) 65%, var(--bg-elevated));
}

.search-result-card__title {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text);
  line-height: var(--leading-snug);
}

.search-result-card__meta {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.search-result-card__excerpt {
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-family: var(--font-editor);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--text-muted);
  margin-top: 0.12rem;
}

@media (prefers-reduced-motion: reduce) {
  .search-overlay__scrim,
  .search-sheet {
    animation: none;
  }
  .btn-primary:hover {
    transform: none;
  }
  .search-result-card:hover {
    transform: none;
  }
}

.btn-primary,
.btn-secondary {
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.62rem 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--transition-fast), opacity var(--transition-fast), box-shadow var(--transition-fast);
}
.btn-primary {
  width: 100%;
  background: linear-gradient(135deg, var(--accent) 0%, var(--brand-glow) 100%);
  color: #fff;
  box-shadow: 0 4px 16px var(--accent-soft);
  letter-spacing: 0.02em;
  border-radius: var(--radius-lg);
}
.btn-primary:hover {
  box-shadow: 0 8px 28px var(--accent-soft);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text);
  border-color: var(--border);
  border-radius: var(--radius-sm);
}
.btn-secondary:hover {
  border-color: var(--accent);
}

body[data-template="paper"] .btn-primary {
  color: #fff;
}

.project-list {
  list-style: none;
  margin: 0;
  padding: var(--space-2) var(--space-3);
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
  min-width: 0;
  -webkit-overflow-scrolling: touch;
}

.project-item {
  margin-bottom: 0.3rem;
}

.project-list-empty {
  list-style: none;
  margin: 0;
  padding: 0.75rem 0.5rem;
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-align: center;
  line-height: var(--leading-snug);
}

.project-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 22px;
  gap: 2px;
  align-items: stretch;
  min-width: 0;
  max-width: 100%;
}

.project-btn {
  min-width: 0;
  max-width: 100%;
  text-align: left;
  padding: 0.5rem 0.58rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-family: inherit;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.project-btn:hover {
  background: var(--accent-soft);
}

.project-btn.is-active {
  background: var(--accent-soft);
  border-color: var(--accent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 2px 8px var(--accent-soft);
}

.project-btn-inner {
  display: flex;
  flex-direction: column;
  gap: 1px;
  align-items: flex-start;
  min-width: 0;
  width: 100%;
}

.project-btn-name {
  font-weight: 600;
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
  width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-btn-time {
  font-size: var(--text-2xs);
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  opacity: 0.88;
}

.project-del {
  width: 22px;
  min-width: 22px;
  height: 100%;
  min-height: 2rem;
  padding: 0;
  align-self: stretch;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: color-mix(in srgb, var(--text-muted) 55%, transparent);
  font-size: 0.68rem;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: opacity var(--transition-fast), color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
}

/* 有鼠标时：默认隐藏，移到整行再出现 */
@media (hover: hover) and (pointer: fine) {
  .project-del {
    opacity: 0;
    pointer-events: none;
  }

  .project-row:hover .project-del,
  .project-item:has(.project-del:focus-visible) .project-del {
    opacity: 0.55;
    pointer-events: auto;
  }

  .project-row:hover .project-del:hover,
  .project-item:has(.project-del:focus-visible) .project-del:hover {
    opacity: 1;
    color: var(--text-muted);
    background: var(--accent-soft);
  }
}

/* 触摸为主：始终可点，但保持低调 */
@media (hover: none), (pointer: coarse) {
  .project-del {
    opacity: 0.32;
  }

  .project-del:active {
    opacity: 1;
    background: var(--accent-soft);
  }
}

.project-del:hover {
  color: var(--text);
}

.project-del:focus-visible {
  opacity: 1;
  pointer-events: auto;
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  color: var(--text-muted);
  background: color-mix(in srgb, var(--accent-soft) 65%, transparent);
}

.editor-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  padding: var(--space-4) max(var(--space-3), env(safe-area-inset-left)) max(var(--space-4), env(safe-area-inset-bottom))
    max(var(--space-3), env(safe-area-inset-right));
  overflow: hidden;
}

@media (min-width: 900px) {
  .editor-panel {
    padding: var(--space-5) max(1.35rem, env(safe-area-inset-left)) var(--space-5);
    padding-right: max(1.35rem, env(safe-area-inset-right));
    max-width: none;
    margin-inline: 0;
    width: 100%;
  }
}

.editor-toolbar {
  flex-shrink: 0;
  margin-bottom: var(--space-3);
}

.label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.3rem;
}

.title-label-wrap {
  display: flex;
  align-items: center;
  gap: 0.28rem;
  min-width: 0;
}

.title-word-count {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.title-row {
  display: flex;
  align-items: stretch;
  gap: 0.5rem;
}
.title-row .input-title {
  flex: 1;
  min-width: 0;
}

.input-category {
  width: clamp(9.5rem, 24vw, 12.5rem);
  min-width: 8.5rem;
  height: 44px;
  min-height: 44px;
  padding: 0 0.85rem;
  line-height: 44px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 700;
  letter-spacing: -0.01em;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
  appearance: none;
  -webkit-appearance: none;
  flex-shrink: 0;
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-category:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.btn-crypto-icon {
  flex-shrink: 0;
  width: 44px;
  min-height: 44px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--accent);
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast),
    background var(--transition-fast), opacity var(--transition-fast);
}

.btn-crypto-icon--inline {
  width: 30px;
  min-width: 30px;
  height: 30px;
  min-height: 30px;
  border-radius: var(--radius-sm);
}

.title-block {
  margin-bottom: 0;
}

@media (hover: hover) and (pointer: fine) {
  .btn-crypto-icon--inline:not(.is-locked):not(.is-secured) {
    opacity: 0;
  }

  .title-block:hover .btn-crypto-icon--inline,
  .title-block:focus-within .btn-crypto-icon--inline {
    opacity: 1;
  }
}

@media (hover: none), (pointer: coarse) {
  .btn-crypto-icon--inline:not(.is-locked):not(.is-secured) {
    opacity: 0.45;
  }
}

.btn-crypto-icon--inline .btn-emoji {
  font-size: var(--text-sm);
}
.btn-crypto-icon:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 0 1px var(--accent-soft);
}
.btn-crypto-icon:active {
  transform: scale(0.97);
}
.btn-crypto-icon:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}
.btn-crypto-icon.is-locked {
  color: var(--brand-glow);
  animation: crypto-pulse 2.4s ease-in-out infinite;
}
.btn-crypto-icon.is-secured {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: var(--accent);
}
@media (prefers-reduced-motion: reduce) {
  .btn-crypto-icon.is-locked {
    animation: none;
  }
}
@keyframes crypto-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 var(--accent-soft);
  }
  50% {
    box-shadow: 0 0 0 4px var(--accent-soft);
  }
}

.field-label {
  margin: 0;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.input-title {
  width: 100%;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  height: 44px;
  min-height: 44px;
  padding: 0 0.85rem;
  line-height: 44px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  outline: none;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.input-title:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.save-status {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.save-status.is-saving {
  color: var(--accent);
}
.save-status.is-saved {
  color: var(--text-muted);
}

.word-count {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  padding: 0;
  border-radius: 0;
  background: transparent;
  font-weight: 600;
}

.editor-body {
  flex: 1 1 0;
  min-height: 0;
  min-width: 0;
  width: 100%;
  position: relative;
  display: flex;
  flex-direction: column;
}

.editor-meta-corner {
  position: absolute;
  right: 0.65rem;
  bottom: 0.55rem;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.2rem;
  max-width: calc(100% - 1.3rem);
  pointer-events: none;
  padding: 0.35rem 0.55rem;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--bg-elevated) 78%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 color-mix(in srgb, var(--border) 35%, transparent);
}

.editor-meta-corner .save-status,
.editor-meta-corner .word-count {
  text-align: right;
  line-height: 1.35;
}

.note-editor {
  flex: 1 1 0;
  width: 100%;
  min-height: 5.5rem;
  resize: none;
  font-family: var(--font-editor);
  font-size: var(--text-md);
  font-weight: 400;
  line-height: var(--leading-loose);
  padding: 1.15rem 1.2rem 2.85rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  outline: none;
  box-shadow: 0 4px 28px rgba(0, 0, 0, 0.05), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.note-editor:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.note-editor::placeholder {
  color: var(--text-muted);
  opacity: 0.85;
}

@media (min-width: 900px) {
  .editor-toolbar {
    max-width: var(--reading-max);
  }

  .editor-body {
    max-width: var(--reading-max);
  }

  .note-editor {
    max-width: none;
  }
}

.app-footer {
  flex-shrink: 0;
  padding: var(--space-2) var(--space-3) max(0.5rem, env(safe-area-inset-bottom, 0px));
  font-size: var(--text-2xs);
  color: var(--text-muted);
  text-align: center;
  line-height: var(--leading-snug);
  border-top: none;
  background: transparent;
  box-shadow: 0 -1px 0 color-mix(in srgb, var(--border) 18%, transparent);
  max-width: none;
  margin-inline: 0;
  width: 100%;
}

/* iOS 手机端：为 footer 与底部安全区预留空间，避免正文底部被遮挡 */
@media (max-width: 899px) {
  .editor-panel {
    padding-bottom: calc(var(--space-4) + 4.4rem + env(safe-area-inset-bottom, 0px));
  }

  .note-editor {
    padding-bottom: calc(4.8rem + env(safe-area-inset-bottom, 0px));
  }
}

/* iPhone Safari 额外补偿：地址栏/工具栏收放时防止正文底部被 footer 挡住 */
@supports (-webkit-touch-callout: none) {
  @media (max-width: 899px) {
    .editor-panel {
      padding-bottom: calc(var(--space-4) + 8.2rem + env(safe-area-inset-bottom, 0px));
    }

    .editor-body {
      padding-bottom: calc(2rem + env(safe-area-inset-bottom, 0px));
    }

    .note-editor {
      padding-bottom: calc(9.2rem + env(safe-area-inset-bottom, 0px));
    }
  }
}

.footer-seo {
  margin: 0 0 0.4rem;
  color: color-mix(in srgb, var(--text-muted) 78%, transparent);
}

.foot-credit {
  margin: 0;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.foot-credit-brand {
  font-family: var(--font-display);
  font-size: var(--text-2xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: inherit;
  text-decoration: none;
  padding: 0.12rem 0.28rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast), opacity var(--transition-fast);
  opacity: 0.95;
}
.foot-credit-brand:hover {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent-soft) 55%, transparent);
  opacity: 1;
}
.foot-credit-brand:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.foot-credit-suffix {
  font-size: var(--text-2xs);
  font-weight: 500;
  color: inherit;
  letter-spacing: 0.2em;
  opacity: 0.85;
}

/* 遮罩：移动端侧栏 */
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 190;
  opacity: 0;
  transition: opacity var(--transition-smooth);
  pointer-events: none;
}
.sidebar-backdrop.is-visible {
  display: block;
  opacity: 1;
  pointer-events: auto;
}
@media (min-width: 900px) {
  .sidebar-backdrop {
    display: none !important;
  }
}

/* 侧栏打开时，强制关闭并屏蔽右上角菜单层，避免拦截触摸 */
@media (max-width: 899px) {
  body.sidebar-open .header-actions__cluster-wrap {
    display: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
  }
}

/* 模态框 */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 1rem;
  padding-bottom: max(1rem, env(safe-area-inset-bottom));
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.modal-backdrop[hidden] {
  display: none;
}

.modal {
  width: min(420px, 100%);
  max-height: min(88dvh, 640px);
  overflow-y: auto;
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-xl);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

/* 手机端：弹窗统一使用不透明主题底色（无玻璃透明效果） */
@media (max-width: 899px) {
  .header-actions__cluster,
  .search-sheet,
  .modal,
  .theme-popover {
    background: var(--bg-sidebar);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .search-sheet__field,
  .input-modal,
  .input-category {
    background: var(--bg-elevated);
  }
}

.modal--zen {
  width: min(400px, calc(100vw - 2rem - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px)));
}

.modal--zen h2 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.modal-body-zen {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--text-muted);
}

.modal-body-zen p {
  margin: 0 0 0.75rem;
}

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

.modal h2 {
  margin: 0 0 0.65rem;
  font-size: var(--text-lg);
}
.modal-hint,
.modal-msg {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin: 0 0 1rem;
  line-height: var(--leading-normal);
}
.modal-msg {
  color: var(--accent);
}
.input-modal {
  width: 100%;
  margin-bottom: 0.65rem;
  padding: 0.62rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-sidebar);
  color: var(--text);
  font-family: inherit;
  font-size: var(--text-md);
}
.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
  justify-content: flex-end;
}

.category-modal-add {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.45rem;
  margin-bottom: 0.55rem;
}

.category-modal-list {
  max-height: min(44vh, 320px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.42rem;
}

.category-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 0.4rem;
  align-items: center;
}

.category-item .btn-secondary {
  padding: 0.5rem 0.75rem;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}