/*
 * This is a manifest file that'll be compiled into application.css.
 * For Rails with tailwindcss-rails gem.
 *
 *= require_tree .
 *= require_self
 */

/* 自定义滚动条样式 */
.scrollbar-thin {
  scrollbar-width: thin;
}

.scrollbar-thin::-webkit-scrollbar {
  height: 6px;
  width: 6px;
}

.scrollbar-thin::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 0;
}

.scrollbar-thin::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 10px;
}

.scrollbar-thin::-webkit-scrollbar-thumb:hover {
  background: rgba(233, 106, 74, 0.55);
}

@media (min-width: 768px) {
  /* Notebook show: make <details> wrappers transparent on desktop so children
     become direct grid items, restoring the 3-column layout unchanged. */
  .notebook-collapse details { display: contents; }
  .notebook-collapse details > summary { display: none; }
}

/* Today is a task surface: one primary action, quiet supporting context. */
.today-page { min-height: 60vh; }
.today-container { max-width: 1152px; margin: 0 auto; padding: 40px 24px; }
.today-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 32px; }
.today-heading { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px 20px; }
.today-heading h1 { margin: 0; font-size: 2rem; line-height: 1.2; font-weight: 750; letter-spacing: -0.03em; }
.today-heading time { font-size: 0.8125rem; color: var(--color-ink-secondary); }
.today-notebook { display: inline-flex; max-width: 100%; min-height: 44px; align-items: center; gap: 8px; margin-top: 4px; color: var(--color-ink-secondary); font-size: 0.875rem; }
.today-notebook > span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.today-notebook > svg { flex-shrink: 0; }
.today-notebook:hover { color: var(--color-ink-primary); }
.today-layout { display: grid; grid-template-columns: minmax(0, 1fr) 288px; grid-template-areas: "practice exam" "reviews progress"; gap: 32px; align-items: start; }
.today-layout h2 { margin: 0; color: var(--color-ink-primary); font-size: 0.9375rem; line-height: 1.5; font-weight: 650; }
.today-practice { grid-area: practice; padding: 28px; background: var(--color-surface-elevated); border: 1px solid var(--color-border-default); border-radius: 16px; }
.today-practice h2 { font-size: 1.5rem; letter-spacing: -0.02em; }
.today-intro { margin: 8px 0 24px; color: var(--color-ink-secondary); font-size: 0.875rem; line-height: 1.7; max-width: 65ch; }
.today-primary { display: flex; width: 100%; min-height: 56px; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 20px; border-radius: 12px; background: var(--color-brand-primary); color: var(--color-ink-on-brand); text-align: left; font-size: 1rem; line-height: 1.5; font-weight: 650; transition: background-color 160ms ease; }
.today-primary > svg { flex-shrink: 0; }
.today-primary:hover { background: var(--color-brand-primary-hover); }
.today-complete { display: flex; gap: 12px; align-items: start; margin: 20px 0; color: var(--color-success); font-size: 0.9375rem; line-height: 1.7; }
.today-complete > svg { flex-shrink: 0; margin-top: 2px; }
.today-daily-goal { margin-top: 24px; }
.today-daily-goal p { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin: 0 0 10px; font-size: 0.8125rem; color: var(--color-ink-secondary); font-variant-numeric: tabular-nums; }
.today-meter { height: 4px; background: var(--color-surface-muted); overflow: hidden; border-radius: 2px; }
.today-meter > span { display: block; height: 100%; background: var(--color-ink-primary); border-radius: inherit; }
.today-exam { grid-area: exam; padding: 20px 24px; border-radius: 12px; background: var(--color-surface-subtle); }
.today-section-heading { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.today-text-button { min-width: 44px; min-height: 44px; padding: 8px 0 8px 12px; color: var(--color-ink-secondary); font-size: 0.8125rem; text-decoration: underline; text-underline-offset: 4px; }
.today-text-button:hover { color: var(--color-ink-primary); }
.today-countdown { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px; margin: 8px 0 10px; font-size: 0.875rem; color: var(--color-ink-secondary); }
.today-countdown strong { font-size: 2rem; line-height: 1.2; font-weight: 700; letter-spacing: -0.03em; color: var(--color-ink-primary); font-variant-numeric: tabular-nums; }
.today-exam-date { margin: 0; font-size: 0.8125rem; color: var(--color-ink-secondary); line-height: 1.7; overflow-wrap: anywhere; }
.today-prep-meter { margin-top: 18px; }
.today-prep-meter > span { background: var(--color-ink-secondary); }
.today-exam-ends { display: flex; justify-content: space-between; gap: 12px; margin-top: 8px; color: var(--color-ink-secondary); font-size: 0.75rem; }
.today-exam-unset { padding-top: 24px; padding-bottom: 24px; }
.today-exam-unset .today-exam-date { margin-top: 10px; }
.today-reviews { grid-area: reviews; min-width: 0; padding: 0 4px; }
.today-review-list { list-style: none; margin: 12px 0 0; padding: 0; }
.today-review-list li + li { border-top: 1px solid var(--color-border-default); }
.today-review-link { display: flex; align-items: center; gap: 14px; min-height: 80px; padding: 16px 8px; border-radius: 6px; transition: background-color 160ms ease; }
.today-review-link:hover { background: var(--color-surface-subtle); }
.today-review-link > svg { flex-shrink: 0; color: var(--color-ink-secondary); }
.today-review-icon { display: flex; flex-shrink: 0; align-items: center; justify-content: center; width: 24px; }
.today-review-copy { flex: 1; min-width: 0; }
.today-review-copy strong { display: block; font-size: 0.9375rem; line-height: 1.5; color: var(--color-ink-primary); font-weight: 600; }
.today-review-copy > span { display: block; margin-top: 4px; font-size: 0.8125rem; line-height: 1.5; color: var(--color-ink-secondary); }
.today-progress { grid-area: progress; min-width: 0; padding: 0 8px; }
.today-readiness-link { display: block; border-radius: 6px; }
.today-readiness-link:hover h2 { text-decoration: underline; text-underline-offset: 4px; }
.today-section-heading > svg { color: var(--color-ink-secondary); }
.today-stat { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px; margin: 12px 0; color: var(--color-ink-secondary); font-size: 0.8125rem; }
.today-stat strong { font-size: 1.75rem; line-height: 1.2; font-weight: 650; letter-spacing: -0.02em; color: var(--color-ink-primary); font-variant-numeric: tabular-nums; }
.today-readiness-meter > span { background: var(--color-success); }
.today-progress-note { margin: 10px 0 0; font-size: 0.8125rem; line-height: 1.6; color: var(--color-ink-secondary); }
.today-progress-note.text-success { color: var(--color-success); }
.today-streak { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--color-border-default); }
.today-streak .today-stat strong { color: var(--color-warm-strong); }
.today-footer { margin: 40px 0 0; font-size: 0.75rem; line-height: 1.6; color: var(--color-ink-secondary); }
.today-switcher { position: relative; flex-shrink: 0; }
.today-switcher summary { display: flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 44px; padding: 10px 14px; border: 1px solid var(--color-border-default); border-radius: 10px; background: var(--color-surface-elevated); color: var(--color-ink-secondary); font-size: 0.8125rem; list-style: none; cursor: pointer; }
.today-switcher summary::-webkit-details-marker { display: none; }
.today-switcher summary:hover { border-color: var(--color-border-strong); color: var(--color-ink-primary); }
.today-switcher-chevron { transform: rotate(90deg); }
.today-switcher-menu { position: absolute; right: 0; z-index: 30; width: 288px; max-width: calc(100vw - 32px); max-height: min(400px, 60dvh); overflow-y: auto; margin-top: 8px; padding: 6px; border-radius: 12px; background: var(--color-surface-elevated); box-shadow: 0 8px 28px rgba(26, 26, 26, 0.14); }
.today-switcher-menu a { display: flex; align-items: center; gap: 10px; min-height: 48px; padding: 10px; border-radius: 6px; font-size: 0.875rem; color: var(--color-ink-secondary); }
.today-switcher-menu a > span { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.today-switcher-menu a > svg { flex-shrink: 0; }
.today-switcher-menu a:hover, .today-switcher-menu a[aria-current] { background: var(--color-surface-subtle); color: var(--color-ink-primary); }
.today-page :is(a, button, summary):focus-visible, :is(.app-rail, .app-mobile-nav) a:focus-visible { outline: 2px solid var(--color-brand-primary); outline-offset: 4px; }

/* The shared rail retains its 80px footprint; only its affordances change. */
.app-rail { position: fixed; inset: 0 auto 0 0; z-index: 40; width: 80px; height: 100dvh; padding-left: env(safe-area-inset-left); border-right: 1px solid var(--color-border-default); }
.app-rail-logo { display: flex; flex-shrink: 0; align-items: center; justify-content: center; min-height: 44px; margin: 24px auto; border-radius: 10px; }
.app-rail-logo img { width: 40px; height: 40px; border-radius: 10px; }
.app-rail-primary, .app-rail-account { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 0 6px; }
.app-nav-link { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; width: 100%; min-height: 64px; padding: 6px 2px; border-radius: 10px; color: var(--color-ink-secondary); transition: color 160ms ease, background-color 160ms ease; }
.app-nav-link:hover { background: var(--color-surface-subtle); color: var(--color-ink-primary); }
.app-nav-link[aria-current="page"] { background: var(--color-brand-primary-soft); color: var(--color-brand-primary); }
.app-nav-icon { position: relative; display: flex; align-items: center; justify-content: center; width: 32px; height: 32px; flex-shrink: 0; }
.app-nav-label { max-width: 100%; font-size: 0.6875rem; line-height: 1.25; text-align: center; overflow-wrap: anywhere; }
.app-nav-link[aria-current="page"] .app-nav-label { font-weight: 650; }
.app-nav-badge { position: absolute; top: -2px; right: -8px; min-width: 17px; height: 17px; padding: 0 4px; border-radius: 10px; color: var(--color-ink-on-brand); font-size: 0.625rem; line-height: 17px; text-align: center; font-weight: 650; }
.app-rail-notebooks { display: flex; flex: 1; min-height: 0; flex-direction: column; align-items: center; gap: 8px; overflow-y: auto; padding: 20px 10px; margin-top: 16px; border-top: 1px solid var(--color-border-default); }
.app-notebook-shortcut { display: flex; flex-shrink: 0; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 10px; }
.app-notebook-shortcut:hover { background: var(--color-surface-subtle); }
.app-notebook-shortcut[aria-current] { background: var(--color-brand-primary-soft); }
.app-rail-account { flex-shrink: 0; border-top: 1px solid var(--color-border-default); padding-top: 10px; padding-bottom: max(16px, env(safe-area-inset-bottom)); }
.app-mobile-nav { position: fixed; inset: auto 0 0; z-index: 40; align-items: center; justify-content: space-around; gap: 8px; min-height: calc(68px + env(safe-area-inset-bottom)); padding: 4px max(12px, env(safe-area-inset-right)) max(4px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left)); border-top: 1px solid var(--color-border-default); }
.app-mobile-nav .app-nav-link { flex: 1; min-height: 60px; max-width: 144px; padding: 3px 8px; }
@media (max-width: 767px) {
  .app-mobile-nav { display: flex; }
  .today-container { padding: 24px 16px; }
  .today-header { align-items: start; flex-wrap: wrap; gap: 16px; margin-bottom: 24px; }
  .today-header > .min-w-0 { flex: 1 1 100%; }
  .today-heading h1 { font-size: 1.75rem; }
  .today-heading { justify-content: space-between; gap: 8px; }
  .today-switcher { margin-top: -4px; }
  .today-switcher-menu { right: auto; left: 0; }
  .today-layout { grid-template-columns: minmax(0, 1fr); grid-template-areas: "practice" "exam" "reviews" "progress"; gap: 24px; }
  .today-practice { padding: 24px 20px; }
  .today-practice h2 { font-size: 1.25rem; }
  .today-primary { padding: 14px 16px; font-size: 0.9375rem; }
  .today-exam { padding: 12px 20px 16px; }
  .today-countdown { margin-top: 0; margin-bottom: 4px; }
  .today-countdown strong { font-size: 1.75rem; }
  .today-prep-meter, .today-exam-ends { display: none; }
  .today-reviews { padding: 0; }
  .today-progress { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; padding: 24px 0 0; border-top: 1px solid var(--color-border-default); }
  .today-streak { margin: 0; padding: 0; border: 0; }
  .today-footer { margin-top: 32px; }
}
@media (min-width: 768px) and (max-width: 1050px) {
  .today-container { padding: 32px 24px; }
  .today-layout { grid-template-columns: minmax(0, 1fr) 240px; gap: 24px; }
  .today-practice { padding: 24px; }
  .today-exam { padding: 16px 20px; }
}
@media (prefers-reduced-motion: reduce) {
  .today-page *, .app-rail *, .app-mobile-nav * { transition: none !important; }
}