:root {
  --bg: #f4f6fb;
  --bg-card: rgba(255, 255, 255, 0.82);
  --bg-card-gradient: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.75));
  --fg: #1f2430;
  --fg-muted: #5d6373;
  --accent: #4a67ff;
  --accent-live: var(--accent);
  --border: rgba(138, 153, 191, 0.24);
  --shadow-soft: 0 18px 40px rgba(70, 80, 120, 0.16);
  --shadow-strong: 0 26px 56px rgba(66, 94, 233, 0.30);
  --accent-shadow: 0 18px 40px rgba(74, 103, 255, 0.28);
  --glass: rgba(255, 255, 255, 0.72);
  --glass-strong: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] {
  --bg: #0f172a;
  --bg-card: rgba(21, 31, 54, 0.78);
  --bg-card-gradient: linear-gradient(180deg, rgba(24, 34, 60, 0.94), rgba(24, 34, 60, 0.78));
  --fg: #f3f4fa;
  --fg-muted: #9aa6c8;
  --accent: #7f9cff;
  --accent-live: var(--accent);
  --border: rgba(104, 123, 186, 0.28);
  --shadow-soft: 0 22px 44px rgba(8, 10, 18, 0.65);
  --shadow-strong: 0 28px 60px rgba(18, 30, 72, 0.60);
  --accent-shadow: 0 22px 48px rgba(127, 156, 255, 0.24);
  --glass: rgba(19, 30, 53, 0.76);
  --glass-strong: rgba(24, 36, 64, 0.88);
}

[data-theme="dark"] .category {
  background: var(--glass);
  border-color: var(--border);
}

[data-theme="dark"] .engine-panel {
  background: var(--glass);
  border-color: var(--border);
}

[data-theme="dark"] .engine-form__fieldset {
  background: rgba(24, 36, 64, 0.88);
  border-color: var(--border);
}

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

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: -35vmax;
  background:
    radial-gradient(circle at 18% 22%, rgba(74, 103, 255, 0.12), transparent 55%),
    radial-gradient(circle at 88% 12%, rgba(255, 126, 86, 0.16), transparent 60%),
    radial-gradient(circle at 40% 78%, rgba(0, 184, 148, 0.18), transparent 65%);
  filter: blur(0.6px);
  opacity: 0.8;
  z-index: 0;
  animation: drift 26s cubic-bezier(0.6, 0.1, 0.3, 1) infinite alternate;
}

body::after {
  animation-direction: alternate-reverse;
  animation-duration: 32s;
  mix-blend-mode: screen;
  opacity: 0.65;
}

@keyframes drift {
  0% {
    transform: translate3d(-2%, 0, 0) scale(1);
  }

  50% {
    transform: translate3d(3%, -2%, 0) scale(1.06);
  }

  100% {
    transform: translate3d(-1%, 4%, 0) scale(1.02);
  }
}

main,
header,
.engine-panel {
  position: relative;
  z-index: 1;
  top: 20px;
}

.nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 32px clamp(18px, 6vw, 88px) 18px;
  padding: 28px clamp(18px, 6vw, 60px);
  border-radius: 30px;
  background: var(--glass);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(22px);
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 18px;
  min-width: 0;
}

.logo__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.85));
  color: #fff;
  font-size: 26px;
  font-weight: 700;
  box-shadow: var(--accent-shadow);
  position: relative;
}

.logo__mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.45);
  opacity: 0.65;
}

.logo__copy h1 {
  margin: 0 0 6px;
  font-size: clamp(24px, 3.2vw, 34px);
}

.logo__copy p {
  margin: 0;
  color: var(--fg-muted);
}

.controls {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.accent-palette {
  display: flex;
  gap: 10px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.25);
}

[data-theme="dark"] .accent-palette {
  background: rgba(18, 28, 48, 0.65);
  border-color: rgba(90, 112, 160, 0.4);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.accent-palette__item {
  border: none;
  border-radius: 999px;
  padding: 12px 14px;
  min-height: 48px;
  font-size: 13px;
  color: var(--fg-muted);
  background: transparent;
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.25s ease;
}

.accent-palette__item.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.82));
  box-shadow: 0 12px 24px color-mix(in srgb, var(--accent-live) 25%, transparent);
  transform: translateY(0);
}

.accent-palette__item:not(.is-active):hover {
  color: var(--fg);
  transform: translateY(0);
}

/* 深色主题切换按钮 */
#themeToggle {
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  font-size: 22px;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.45));
  color: rgba(255, 255, 255, 0.92);
  box-shadow: 0 18px 36px color-mix(in srgb, var(--accent-live) 24%, transparent);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.3s ease;
  position: relative;
  overflow: visible;
}

[data-theme="dark"] #themeToggle {
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.2));
}

#themeToggle:hover {
  transform: translateY(-3px) scale(1.08);
  box-shadow: 0 24px 48px color-mix(in srgb, var(--accent-live) 40%, transparent);
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.62));
}

.engine-panel {
  margin: 0 clamp(18px, 6vw, 88px) 32px;
  padding: 32px clamp(18px, 6vw, 72px);
  border-radius: 34px;
  background: var(--glass);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(24px);
  display: grid;
  gap: 24px;
}

.engine-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 34px;
  /* 可以根据需要调整圆角大小 */
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.36), transparent 32%),
    linear-gradient(300deg, color-mix(in srgb, var(--accent-live) 18%, transparent), transparent 50%);
  opacity: 0;
  transition: opacity 0.6s ease;
  pointer-events: none;
}

.engine-panel:hover::before {
  opacity: 1;
}

.engine-panel__meta {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
}

.engine-panel__status {
  font-weight: 600;
  color: var(--fg);
}

.engine-panel__tip {
  color: var(--fg-muted);
  font-size: 14px;
}

.engine-form__fieldset {
  border: none;
  margin: 0;
  padding: 24px;
  display: grid;
  gap: 18px;
  border-radius: 28px;
  background: var(--glass-strong);
  border: 1px solid rgba(255, 255, 255, 0.32);
  position: relative;
  overflow: hidden;
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease, background 0.35s ease;
}

.engine-form--disabled {
  opacity: 0.6;
  pointer-events: none;
}

[data-theme="dark"] .engine-form__fieldset {
  border-color: rgba(90, 112, 160, 0.24);
  background: rgba(24, 36, 64, 0.88);
}

[data-theme="dark"] .engine-form__fieldset:hover,
[data-theme="dark"] .engine-form__fieldset:focus-within {
  background: rgba(28, 42, 72, 0.92);
}

.engine-form__legend {
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.engine-form__input {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
}

.engine-form__input input {
  width: 100%;
  padding: 15px 20px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.9);
  color: var(--fg);
  font-size: 15px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  position: relative;
}

[data-theme="dark"] .engine-form__input input {
  background: rgba(26, 38, 68, 0.86);
  border-color: var(--border);
}

.engine-form__input input::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  padding: 2px;
  background: linear-gradient(135deg, var(--accent-live), transparent 60%);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.engine-form__input input:hover::after {
  opacity: 0.6;
}

.engine-form__input input:focus-visible {
  outline: none;
  border-color: color-mix(in srgb, var(--accent-live) 45%, transparent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-live) 18%, transparent);
  transform: translateY(-1px);
}

.engine-form__input input:focus-visible::after {
  opacity: 1;
}

.engine-form__input button {
  padding: 15px 28px;
  border-radius: 16px;
  border: none;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.75));
  box-shadow: 0 18px 38px color-mix(in srgb, var(--accent-live) 32%, transparent);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: visible;
}

.engine-form__input button::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent-live), transparent 60%);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.engine-form__input button:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 28px 56px color-mix(in srgb, var(--accent-live) 45%, transparent);
}

.engine-form__input button:hover::after {
  opacity: 1;
}

.engine-form__input button:active {
  transform: translateY(0);
}

.engine-form__input button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
}

.engine-form--recent-internal .engine-form__input input {
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-live) 45%, transparent);
}

.engine-form--recent-internal .engine-form__input button {
  box-shadow: 0 22px 44px color-mix(in srgb, var(--accent-live) 38%, transparent);
}

.engine-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.engine-selector__item {
  border-radius: 12px;
  border: 1px solid rgba(128, 142, 190, 0.24);
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--fg-muted);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  position: relative;
  overflow: visible;
}

.engine-selector__item::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 12px;
  padding: 2px;
  background: linear-gradient(135deg, var(--accent-live), transparent 60%);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

[data-theme="dark"] .engine-selector__item {
  background: rgba(24, 36, 62, 0.62);
  border-color: rgba(128, 142, 190, 0.28);
}

.engine-selector__item:hover {
  color: var(--fg);
  transform: translateY(-1px);
  border-color: var(--accent-live);
  background: rgba(255, 255, 255, 0.88);
}

[data-theme="dark"] .engine-selector__item:hover {
  background: rgba(255, 255, 255, 0.18);
}

.engine-selector__item:hover::after {
  opacity: 0.6;
}

.engine-selector__item.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.78));
  border-color: transparent;
  box-shadow: 0 18px 40px color-mix(in srgb, var(--accent-live) 35%, transparent);
}

.engine-selector__empty {
  font-size: 14px;
  color: var(--fg-muted);
}

.engine-form__hint {
  margin: 0;
  font-size: 13px;
  color: var(--fg-muted);
}

.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0 clamp(18px, 6vw, 88px);
  margin: 0 0 18px;
}

.tag-filter__item {
  padding: 10px 18px;
  border-radius: 14px;
  border: 1px solid rgba(128, 142, 190, 0.2);
  background: rgba(255, 255, 255, 0.65);
  color: var(--fg-muted);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  position: relative;
  overflow: visible;
}

.tag-filter__item::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 14px;
  padding: 2px;
  background: linear-gradient(135deg, var(--accent-live), transparent 60%);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

[data-theme="dark"] .tag-filter__item {
  background: rgba(22, 34, 60, 0.7);
}

.tag-filter__item:hover {
  transform: translateY(-1px);
  color: var(--fg);
  box-shadow: 0 16px 30px color-mix(in srgb, var(--accent-live) 20%, transparent);
}

.tag-filter__item:hover::after {
  opacity: 0.6;
}

.tag-filter__item.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.7));
  border-color: transparent;
  box-shadow: 0 18px 34px color-mix(in srgb, var(--accent-live) 28%, transparent);
}

.category-container {
  display: grid;
  gap: clamp(26px, 4vw, 42px);
  padding: 0 clamp(18px, 6vw, 88px) 68px;
}

.category {
  display: grid;
  gap: 18px;
  padding: 24px clamp(18px, 5vw, 48px);
  border-radius: 26px;
  background: var(--glass);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
  transform: translateY(18px);
  opacity: 0;
  animation: cascadeIn 0.65s var(--animate-delay, 0s) forwards ease-out;
}

@keyframes cascadeIn {
  0% {
    opacity: 0;
    transform: translateY(18px) scale(0.98);
  }

  55% {
    transform: translateY(-4px) scale(1.01);
  }

  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.category__title {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.category__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 18px;
}

.category__description {
  margin: 0;
  color: var(--fg-muted);
  font-size: 14px;
  font-weight: 400;
}

.category__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.62));
  box-shadow: 0 18px 32px color-mix(in srgb, var(--accent-live) 28%, transparent);
}

.category__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--fg-muted);
  font-size: 14px;
}

.category__meta::before {
  content: "";
  width: 32px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent-live), transparent);
  opacity: 0.6;
}

.category__grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));


@keyframes cardPop {
  0% {
    opacity: 0;
    transform: translateY(18px) scale(0.96);
  }

  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}



.tool-card {
  position: relative;
  border-radius: 20px;
  padding: 22px 22px 70px;
  border: 1px solid rgba(130, 146, 200, 0.22);
  background: var(--bg-card-gradient);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94), box-shadow 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  animation: cardPop 0.55s var(--card-delay, 0s) backwards ease-out;
}

[data-theme="dark"] .tool-card {
  border-color: rgba(90, 112, 180, 0.26);
}

[data-theme="dark"] .category {
  background: var(--glass);
  border-color: var(--border);
}

[data-theme="dark"] .category__badge {
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.62));
  color: #fff;
}

.tool-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 20px;
  padding: 2px;
  background: linear-gradient(135deg, var(--accent-live), transparent 60%);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

[data-theme="dark"] .tool-card::after {
  background: linear-gradient(135deg, var(--accent-live), transparent 60%);
}

.tool-card:hover::after,
.tool-card:focus-within::after {
  opacity: 1;
}

.tool-card:hover,
.tool-card:focus-within {
  transform: translateY(-3px) scale(1.01);
  box-shadow: 0 16px 32px color-mix(in srgb, var(--accent-live) 20%, transparent);
}

.tool-card__name {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
}

.tool-card__desc {
  margin: 0 0 16px;
  color: var(--fg-muted);
  min-height: 48px;
  line-height: 1.6;
}

.tool-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 12px;
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 20px;
}

.tool-card__tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  flex: 1;
  min-width: 0;
  /* 允许弹性项目收缩到内容大小以下 */
}





.tool-card__tag {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(74, 103, 255, 0.16);
  color: var(--accent-live);
  transition: transform 0.2s ease;
}

.tool-card__tag:hover {
  transform: translateY(-2px);
}

.tool-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.8));
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 18px 36px color-mix(in srgb, var(--accent-live) 36%, transparent);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  position: relative;
  overflow: visible;
}

.tool-card__link::after {
  content: "→";
  font-size: 14px;
  transition: transform 0.2s ease;
}

.tool-card__link::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent-live), transparent 60%);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.tool-card__link:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 28px 52px color-mix(in srgb, var(--accent-live) 40%, transparent);
}

.tool-card__link:hover::after {
  transform: translateX(2px);
}

.tool-card__link:hover::before {
  opacity: 1;
}

.fallback {
  text-align: center;
  padding: 48px 0;
  color: var(--fg-muted);
  font-size: 15px;
}

@media (max-width: 960px) {
  .nav-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .controls {
    width: 100%;
    justify-content: flex-start;
  }

  .engine-form__input {
    grid-template-columns: 1fr;
  }

  .engine-form__input button {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .tool-card {
    padding-bottom: 88px;
  }

  .tool-card__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== 侧边栏样式 ===== */
.nav-container {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 260px;
  background: var(--glass);
  border-right: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(22px);
  z-index: 100;
  overflow-y: auto;
  padding: 20px;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform: translateX(0);
  opacity: 1;
  display: flex;
  flex-direction: column;
}

/* 桌面端侧边栏默认显示 */
@media (min-width: 961px) {
  .nav-container {
    transform: translateX(0);
  }
  
  .nav-container.hidden {
    transform: translateX(-100%);
  }
}

/* 移动端侧边栏默认隐藏 */
@media (max-width: 960px) {
  .nav-container {
    transform: translateX(-100%);
  }
  
  .nav-container:not(.hidden) {
    transform: translateX(0);
  }
}

/* 侧边栏滚动条样式 */
.nav-container::-webkit-scrollbar {
  width: 6px;
}

.nav-container::-webkit-scrollbar-track {
  background: transparent;
}

.nav-container::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--accent-live) 30%, transparent);
  border-radius: 3px;
}

.nav-container::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--accent-live) 50%, transparent);
}

.nav-container.hidden {
  transform: translateX(-100%);
  opacity: 0.8;
}

/* 桌面端：确保侧边栏默认显示（如果没有隐藏） */
@media (min-width: 961px) {
  .nav-container {
    transform: translateX(0);
  }

  /* 桌面端hidden类仍然有效，允许用户切换侧边栏 */
  .nav-container.hidden {
    transform: translateX(-100%);
  }
}

/* 右下角浮动按钮容器 */
.floating-buttons {
  position: fixed;
  bottom: 30px;
  right: 30px;
  display: flex;
  flex-direction: column;
  /* 反向排序使导航切换按钮在底部，回到顶部按钮在顶部 */
  gap: 12px;
  z-index: 1000;
  align-items: flex-end;
}

.nav-toggle-button,
.back-to-top-button,
#themeToggle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 6px 16px color-mix(in srgb, var(--accent) 40%, transparent);
  transition: all 0.3s ease;
  z-index: 1000;
  position: relative;
  overflow: visible;
}

.nav-toggle-button::after,
.back-to-top-button::after,
#themeToggle::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), transparent 60%);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.nav-toggle-button:hover,
.back-to-top-button:hover,
#themeToggle:hover {
  background: color-mix(in srgb, var(--accent) 90%, black);
  box-shadow: 0 6px 16px color-mix(in srgb, var(--accent) 30%, transparent);
  transform: scale(1.05);
}

.nav-toggle-button:hover::after,
.back-to-top-button:hover::after,
#themeToggle:hover::after {
  opacity: 0.8;
}

.back-to-top-button {
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.8);
  order: -1;
  /* 在视觉顺序中使其首先出现 */
}

.back-to-top-button.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

/* 撤销主内容居中更改，因为我们正在移动按钮 */
.main-content {
  margin-left: 260px;
  transition: margin 0.3s ease;
}

/* 浮动按钮的移动端调整 */
@media (max-width: 960px) {
  .floating-buttons {
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    /* 确保在移动端具有高z-index */
  }

  .main-content {
    margin-left: 0;
  }

  /* 确保侧边栏打开时浮动按钮仍可见 */
  .nav-container:not(.hidden)~.main-content .floating-buttons {
    z-index: 1001; /* 高于侧边栏 (z-index: 101) */
  }

  /* 如需要，调整移动端按钮大小 */
  .nav-toggle-button,
  .back-to-top-button {
    width: 44px;
    height: 44px;
    font-size: 16px;
  }
}

/* 按钮的移动端调整 */
@media (max-width: 960px) {
  .nav-toggle-button {
    width: 44px;
    height: 44px;
    font-size: 16px;
  }

  /* 在移动端，当侧边栏隐藏时将导航切换按钮定位到固定位置 */
  .nav-container.hidden .nav-toggle-button {
    left: 20px;
  }

  /* 移动端优化按钮排列 */
  .floating-buttons {
    gap: 10px;
  }
  
  /* 优化移动端按钮大小 */
  .nav-toggle-button,
  .back-to-top-button,
  #themeToggle {
    width: 42px;
    height: 42px;
    font-size: 16px;
  }
}

/* ===== 侧边栏头部样式 ===== */
.sidebar-header {
  padding: 0 0 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
  margin-top: 0; /* 确保顶部对齐 */
}

.sidebar-header .logo {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.sidebar-header .logo__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.85));
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  box-shadow: var(--accent-shadow);
  position: relative;
}

.sidebar-header .logo__mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.45);
  opacity: 0.65;
}

.sidebar-header .logo__copy h1 {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 600;
}

.sidebar-header .logo__copy p {
  margin: 0;
  color: var(--fg-muted);
  font-size: 12px;
}

/* ===== 侧边栏控制组件样式 ===== */
.controls {
  padding: 0 0 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

/* 侧边栏内容区域（包含分类导航） */
.sidebar-content {
  margin-top: 20px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.sidebar-content h2 {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 600;
  color: var(--fg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.8;
}

.controls .accent-palette {
  display: flex;
  gap: 6px;
  padding: 4px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.25);
}

[data-theme="dark"] .controls .accent-palette {
  background: rgba(18, 28, 48, 0.65);
  border-color: rgba(90, 112, 160, 0.4);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.controls .accent-palette__item {
  border: none;
  border-radius: 999px;
  padding: 8px 10px;
  min-height: 36px;
  font-size: 12px;
  color: var(--fg-muted);
  background: transparent;
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.25s ease;
}

.controls .accent-palette__item.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.82));
  box-shadow: 0 8px 16px color-mix(in srgb, var(--accent-live) 20%, transparent);
  transform: translateY(0);
}

.controls .accent-palette__item:not(.is-active):hover {
  color: var(--fg);
  transform: translateY(0);
}

.controls #themeToggle {
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  font-size: 18px;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.45));
  color: rgba(255, 255, 255, 0.92);
  box-shadow: 0 12px 24px color-mix(in srgb, var(--accent-live) 24%, transparent);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.3s ease;
}

.controls #themeToggle:hover {
  transform: translateY(-2px) scale(1.08);
  box-shadow: 0 16px 32px color-mix(in srgb, var(--accent-live) 40%, transparent);
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.62));
}

/* ===== 侧边栏导航标题样式 ===== */
.sidebar-nav h2 {
  padding: 0 0 16px;
  margin: 0 0 18px 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--fg);
  border-bottom: 1px solid var(--border);
}

/* ===== 侧边栏导航菜单样式 ===== */
#nav-menu {
  list-style: none;
  padding: 0;
  margin: 0;
  flex: 1;
}

#nav-menu li {
  padding: 0;
  margin: 4px 0;
}

#nav-menu a {
  display: block;
  padding: 12px 16px;
  color: var(--fg-muted);
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 15px;
  border-radius: 6px;
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
}

#nav-menu a::before {
  content: "📁";
  font-size: 14px;
  flex-shrink: 0;
}

#nav-menu a::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 6px;
  padding: 2px;
  background: linear-gradient(135deg, var(--accent-live), transparent 60%);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

#nav-menu a:hover {
  background: color-mix(in srgb, var(--accent-live) 5%, transparent);
  color: var(--fg);
  padding-left: 20px;
}

#nav-menu a:hover::after {
  opacity: 0.6;
}

#nav-menu a.active {
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.6));
  color: #fff;
}

/* ===== 侧边栏分类导航样式 ===== */
.sidebar-nav {
  padding: 20px 0;
}

.sidebar-nav h2 {
  padding: 0 0 16px;
  margin: 0 0 18px 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--fg);
  border-bottom: 1px solid var(--border);
}

.category-nav {
  list-style: none;
  padding: 0;
  margin: 0;
}

.category-nav li {
  padding: 0;
  margin: 4px 0;
}

.category-nav a {
  display: block;
  padding: 12px 16px;
  color: var(--fg-muted);
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 15px;
  border-radius: 6px;
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
}

.category-nav a::before {
  content: "📁";
  font-size: 14px;
}

.category-nav a::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 6px;
  padding: 2px;
  background: linear-gradient(135deg, var(--accent-live), transparent 60%);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.category-nav a:hover {
  background: color-mix(in srgb, var(--accent-live) 5%, transparent);
  color: var(--fg);
  padding-left: 20px;
}

.category-nav a:hover::after {
  opacity: 0.6;
}

.category-nav a.active {
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.6));
  color: #fff;
}

/* 侧边栏子菜单样式 */
.subcategory-nav {
  list-style: none;
  padding-left: 20px;
  margin: 8px 0;
  display: none;
}

.subcategory-nav li {
  margin: 2px 0;
}

.subcategory-nav a {
  padding: 8px 16px;
  font-size: 14px;
  color: var(--fg-muted);
}

.subcategory-nav a:hover {
  color: var(--fg);
}

.subcategory-nav a.active {
  color: #fff;
  background: color-mix(in srgb, var(--accent-live) 20%, transparent);
}

.main-content {
  margin-left: 260px;
  transition: margin 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 桌面端主内容样式 */
@media (min-width: 961px) {
  body.nav-closed .main-content {
    margin-left: 0;
    padding: 0 10%;
  }
}

/* 移动端主内容样式 */
@media (max-width: 960px) {
  .main-content {
    margin-left: 0 !important;
    padding: 0 24px;
  }
}

/* ===== 桌面端：侧边栏与主内容的交互 ===== */
@media (min-width: 961px) {
  /* 当侧边栏显示时，主内容向右移动 */
  body:not(.nav-closed) .main-content {
    margin-left: 260px;
  }

  /* 当侧边栏隐藏时，主内容居中 */
  body.nav-closed .main-content {
    margin-left: 0;
    padding: 0 10%;
  }
}

/* 移动端响应式调整 */
@media (max-width: 960px) {
  /* 移动端侧边栏默认隐藏，覆盖在内容之上 */
  .nav-container {
    width: 280px;
    transform: translateX(-100%); /* 默认隐藏 */
    position: fixed; /* 确保覆盖内容而不是推挤内容 */
    height: 100vh; /* 全高 */
    top: 0;
    left: 0; /* 明确设置左侧位置 */
    z-index: 101; /* 高于其他内容 */
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1); /* 添加平滑滑动过渡 */
    will-change: transform; /* 优化动画 */
    /* 确保不影响布局流 */
    backface-visibility: hidden;
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.15);
  }

  .nav-container:not(.hidden) {
    transform: translateX(0); /* 显示状态 */
  }

  /* 在移动端，主内容不受侧边栏影响 */
  .nav-container:not(.hidden)~.main-content,
  .nav-container.hidden~.main-content {
    margin-left: 0 !important; /* 确保移动端主内容不受侧边栏影响 */
    padding: 0 24px; /* 一致的内边距 */
  }
  
  /* 添加遮罩层 */
  .nav-container:not(.hidden)::after {
    content: '';
    position: fixed;
    top: 0;
    left: 280px;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
  }
}
}

/* ===== 侧边栏样式 ===== */
.nav-container {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 260px;
  background: var(--glass);
  border-right: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(22px);
  z-index: 100;
  overflow-y: auto;
  padding: 20px;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform: translateX(0);
  opacity: 1;
  display: flex;
  flex-direction: column;
}

/* 桌面端侧边栏默认显示 */
@media (min-width: 961px) {
  .nav-container {
    transform: translateX(0);
  }
  
  .nav-container.hidden {
    transform: translateX(-100%);
  }
}

/* 移动端侧边栏默认隐藏 */
@media (max-width: 960px) {
  .nav-container {
    transform: translateX(-100%);
  }
  
  .nav-container:not(.hidden) {
    transform: translateX(0);
  }
}

/* 侧边栏滚动条样式 */
.nav-container::-webkit-scrollbar {
  width: 6px;
}

.nav-container::-webkit-scrollbar-track {
  background: transparent;
}

.nav-container::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--accent-live) 30%, transparent);
  border-radius: 3px;
}

.nav-container::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--accent-live) 50%, transparent);
}

.nav-container.hidden {
  transform: translateX(-100%);
  opacity: 0.8;
}

/* 右下角浮动按钮容器 */
.floating-buttons {
  position: fixed;
  bottom: 30px;
  right: 30px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 1000;
  align-items: flex-end;
}

.nav-toggle-button,
.back-to-top-button,
#themeToggle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--accent-live);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 6px 16px color-mix(in srgb, var(--accent-live) 40%, transparent);
  transition: all 0.3s ease;
  z-index: 1000;
  position: relative;
  overflow: visible;
}

.nav-toggle-button:hover,
.back-to-top-button:hover,
#themeToggle:hover {
  background: color-mix(in srgb, var(--accent-live) 90%, black);
  box-shadow: 0 6px 16px color-mix(in srgb, var(--accent-live) 30%, transparent);
  transform: scale(1.05);
}

.back-to-top-button {
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.8);
  order: -1;
}

.back-to-top-button.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.main-content {
  margin-left: 260px;
  transition: margin 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 桌面端主内容样式 */
@media (min-width: 961px) {
  body.nav-closed .main-content {
    margin-left: 0;
    padding: 0 10%;
  }
}

/* 移动端主内容样式 */
@media (max-width: 960px) {
  .main-content {
    margin-left: 0 !important;
    padding: 0 24px;
  }
}

/* ===== 侧边栏头部样式 ===== */
.sidebar-header {
  padding: 0 0 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
  margin-top: 0;
}

.sidebar-header .logo {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.sidebar-header .logo__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.85));
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  box-shadow: var(--accent-shadow);
  position: relative;
}

.sidebar-header .logo__mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.45);
  opacity: 0.65;
}

.sidebar-header .logo__copy h1 {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 600;
}

.sidebar-header .logo__copy p {
  margin: 0;
  color: var(--fg-muted);
  font-size: 12px;
}

/* ===== 侧边栏控制组件样式 ===== */
.controls {
  padding: 0 0 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

/* 侧边栏内容区域（包含分类导航） */
.sidebar-content {
  margin-top: 20px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.sidebar-content h2 {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 600;
  color: var(--fg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.8;
}

.controls .accent-palette {
  display: flex;
  gap: 6px;
  padding: 4px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.25);
}

[data-theme="dark"] .controls .accent-palette {
  background: rgba(18, 28, 48, 0.65);
  border-color: rgba(90, 112, 160, 0.4);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.controls .accent-palette__item {
  border: none;
  border-radius: 999px;
  padding: 8px 10px;
  min-height: 36px;
  font-size: 12px;
  color: var(--fg-muted);
  background: transparent;
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.25s ease;
}

.controls .accent-palette__item.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.82));
  box-shadow: 0 8px 16px color-mix(in srgb, var(--accent-live) 20%, transparent);
  transform: translateY(0);
}

.controls .accent-palette__item:not(.is-active):hover {
  color: var(--fg);
  transform: translateY(0);
}

.controls #themeToggle {
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  font-size: 18px;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.45));
  color: rgba(255, 255, 255, 0.92);
  box-shadow: 0 12px 24px color-mix(in srgb, var(--accent-live) 24%, transparent);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.3s ease;
}

.controls #themeToggle:hover {
  transform: translateY(-2px) scale(1.08);
  box-shadow: 0 16px 32px color-mix(in srgb, var(--accent-live) 40%, transparent);
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.62));
}

/* ===== 侧边栏导航菜单样式 ===== */
#nav-menu {
  list-style: none;
  padding: 0;
  margin: 0;
  flex: 1;
}

#nav-menu li {
  padding: 0;
  margin: 4px 0;
}

#nav-menu a {
  display: block;
  padding: 12px 16px;
  color: var(--fg-muted);
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 15px;
  border-radius: 6px;
  position: relative;
  display: block;
}



#nav-menu a:hover {
  background: color-mix(in srgb, var(--accent-live) 5%, transparent);
  color: var(--fg);
  padding-left: 20px;
}



#nav-menu a.active {
  background: linear-gradient(135deg, var(--accent-live), rgba(255, 255, 255, 0.6));
  color: #fff;
}



/* 移动端响应式调整 */
@media (max-width: 960px) {
  .nav-container {
    width: 280px;
    transform: translateX(-100%);
    position: fixed;
    height: 100vh;
    top: 0;
    left: 0;
    z-index: 101;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    will-change: transform;
    backface-visibility: hidden;
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.15);
  }

  .nav-container:not(.hidden) {
    transform: translateX(0);
  }

  .nav-container:not(.hidden)~.main-content,
  .nav-container.hidden~.main-content {
    margin-left: 0 !important;
    padding: 0 24px;
  }
  
  .nav-container:not(.hidden)::after {
    content: '';
    position: fixed;
    top: 0;
    left: 280px;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
  }
}

/* 桌面端主内容样式 */
@media (min-width: 961px) {
  .nav-container.hidden ~ .main-content {
    margin-left: 0;
    padding: 0 10%;
  }
}

/* 鼠标跟随效果 */
.mouse-follower {
  position: fixed;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent-live) 8%, transparent) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 150;
  /* 低于切换按钮但高于内容 */
  mix-blend-mode: screen;
  transform: translate(-50%, -50%);
  left: -100px;
  top: -100px;
}

.mouse-follower.active {
  opacity: 0.2;
}

/* 页脚样式 */
.page-footer {
  text-align: center;
  padding: 5px 0;
}