/* Pomodoro educational guide */
.guide-page {
  --guide-bg: rgba(20, 20, 20, 0.12);
  --guide-surface: rgba(20, 20, 20, 0.14);
  --guide-surface-strong: rgba(20, 20, 20, 0.22);
  --guide-text: #ffffff;
  --guide-muted: rgba(255, 255, 255, 0.82);
  --guide-line: rgba(255, 255, 255, 0.22);
  --guide-accent: #4f1c51;
  --guide-accent-dark: #3d163f;
  --guide-shadow: 0 10px 28px rgba(28, 24, 21, 0.15);
  width: min(720px, calc(100% - 32px));
  max-width: none;
  margin: 24px auto;
  padding: 0;
  color: var(--guide-text);
}

body.theme-dark .guide-page,
body.theme-yourname .guide-page,
body.theme-rain .guide-page,
body.theme-custom .guide-page {
  --guide-bg: rgba(20, 20, 20, 0.42);
  --guide-surface: rgba(20, 20, 20, 0.48);
  --guide-surface-strong: rgba(20, 20, 20, 0.62);
  --guide-text: #f7f8f6;
  --guide-muted: #bec5c0;
  --guide-line: rgba(255, 255, 255, 0.14);
  --guide-accent: #8b5fbf;
  --guide-accent-dark: #a77bd4;
  --guide-shadow: 0 22px 70px rgba(0, 0, 0, 0.28);
}

.guide-skip-link {
  position: fixed;
  z-index: 10000;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: #fff;
  background: #1f2521;
  border-radius: 8px;
  transform: translateY(-160%);
}

.guide-skip-link:focus {
  transform: translateY(0);
}

.guide-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 8px 0 18px;
  color: var(--guide-text);
  background: transparent;
  margin-bottom: 0;
  text-align: center;
}

.guide-nav a {
  color: inherit;
  text-decoration: none;
}

.guide-header .app-title {
  margin: 0;
  font-size: 2rem;
}

.guide-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
}

.guide-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  color: var(--guide-text);
  background: var(--guide-surface);
  border: 1px solid var(--guide-line);
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 650;
  white-space: nowrap;
}

.guide-nav .guide-back-link {
  gap: 7px;
  color: var(--guide-text);
  background: var(--guide-surface-strong);
}

.guide-nav .guide-back-link:hover {
  color: var(--guide-text);
  background: rgba(255, 255, 255, 0.18);
}

.guide-nav a:hover {
  color: var(--guide-text);
  background: var(--guide-surface);
}

.guide-header a:focus-visible,
.pomodoro-guide a:focus-visible {
  outline: 3px solid var(--guide-accent);
  outline-offset: 3px;
}

.pomodoro-guide {
  margin: 12px 0 0;
  color: var(--guide-text);
  text-align: left;
}

.guide-hero {
  max-width: none;
  padding: 30px 24px;
  margin-bottom: 0;
  text-align: left;
  background: var(--guide-surface);
  border: 1px solid var(--guide-line);
  border-radius: 12px;
  box-shadow: var(--guide-shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.guide-kicker,
.guide-section-label {
  margin: 0 0 10px;
  color: var(--guide-text);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.guide-hero h1 {
  max-width: 760px;
  margin: 0;
  color: var(--guide-text);
  font-size: clamp(1.8rem, 5vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  text-wrap: balance;
}

.guide-title-line {
  display: inline;
}

.guide-lede {
  max-width: 760px;
  margin: 16px 0 0;
  color: var(--guide-muted);
  font-size: 1rem;
  line-height: 1.65;
}

.guide-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 24px;
  color: var(--guide-muted);
  font-size: 0.82rem;
}

.guide-meta > *:not(:last-child)::after {
  content: "•";
  margin-left: 20px;
  color: var(--guide-line);
}

.guide-hero-actions,
.guide-choice-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.guide-button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 11px 17px;
  border: 1px solid var(--guide-line);
  border-radius: 10px;
  color: var(--guide-text);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  transition:
    transform 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease;
}

.guide-button:hover {
  transform: translateY(-1px);
}

.guide-button-primary {
  color: #fff;
  background: var(--guide-accent);
  border-color: transparent;
}

.guide-button-primary:hover {
  background: var(--guide-accent-dark);
}

.guide-button-secondary {
  background: var(--guide-surface);
}

.guide-button-secondary:hover {
  background: var(--guide-surface-strong);
  border-color: var(--guide-accent);
}

.guide-layout {
  display: block;
  margin-top: 14px;
}

.guide-toc {
  position: static;
  padding: 18px 20px;
  background: var(--guide-surface);
  border: 1px solid var(--guide-line);
  border-radius: 10px;
  box-shadow: var(--guide-shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.guide-toc > p {
  margin: 0 0 14px;
  color: var(--guide-text);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.guide-toc nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
}

.guide-toc a {
  padding: 5px 0;
  color: var(--guide-muted);
  font-size: 0.84rem;
  line-height: 1.35;
  text-decoration: none;
}

.guide-toc a:hover {
  color: var(--guide-accent-dark);
}

.guide-article-body {
  min-width: 0;
  padding: 0 8px;
}

.guide-section {
  padding: 42px 16px;
  scroll-margin-top: 20px;
}

.guide-section + .guide-section {
  border-top: 1px solid var(--guide-line);
}

.guide-section h2 {
  margin: 0 0 24px;
  color: var(--guide-text);
  font-size: clamp(1.45rem, 4vw, 1.9rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.guide-section > p:not(.guide-section-label),
.guide-callout p,
.guide-evidence-note p {
  margin: 0 0 20px;
  color: var(--guide-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.guide-callout,
.guide-evidence-note {
  margin-top: 26px;
  padding: 20px;
  background: var(--guide-surface);
  border-left: 4px solid var(--guide-accent);
  border-radius: 0 12px 12px 0;
}

.guide-callout strong,
.guide-evidence-note strong {
  display: block;
  margin-bottom: 7px;
  color: var(--guide-text);
  font-size: 0.9rem;
}

.guide-callout p,
.guide-evidence-note p {
  margin: 0;
  font-size: 0.95rem;
}

.guide-cycle {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 26px 0;
  border: 1px solid var(--guide-line);
  border-radius: 14px;
  overflow: hidden;
}

.guide-cycle-step {
  min-width: 0;
  padding: 18px 14px;
  background: var(--guide-surface);
}

.guide-cycle-step + .guide-cycle-step {
  border-left: 1px solid var(--guide-line);
}

.guide-cycle-step > span {
  color: var(--guide-accent-dark);
  font-size: 0.72rem;
  font-weight: 800;
}

.guide-cycle-step h3,
.guide-principles h3,
.guide-fit-grid h3,
.guide-choice h3 {
  margin: 14px 0 8px;
  color: var(--guide-text);
  font-size: 1rem;
}

.guide-cycle-step p,
.guide-principles p {
  margin: 0;
  color: var(--guide-muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.guide-principles,
.guide-fit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 26px;
  background: var(--guide-line);
  border: 1px solid var(--guide-line);
  border-radius: 14px;
  overflow: hidden;
}

.guide-principles > div,
.guide-fit-grid > div {
  padding: 20px;
  background: var(--guide-surface);
}

.guide-principles h3,
.guide-fit-grid h3 {
  margin-top: 0;
}

.guide-fit-grid ul {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--guide-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.guide-choice {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin-top: 28px;
  padding: 22px;
  background: var(--guide-surface-strong);
  border: 1px solid var(--guide-line);
  border-radius: 14px;
}

.guide-choice span {
  color: var(--guide-accent-dark);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.guide-choice h3 {
  max-width: 360px;
  margin: 7px 0 0;
  font-size: 1.15rem;
}

.guide-choice-actions {
  flex: 0 0 auto;
  margin: 0;
}

.guide-sources ol {
  display: grid;
  gap: 0;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: source;
  border-top: 1px solid var(--guide-line);
}

.guide-sources li {
  position: relative;
  display: grid;
  gap: 5px;
  padding: 22px 10px 22px 48px;
  counter-increment: source;
  border-bottom: 1px solid var(--guide-line);
}

.guide-sources li::before {
  content: counter(source, decimal-leading-zero);
  position: absolute;
  top: 23px;
  left: 4px;
  color: var(--guide-accent-dark);
  font-size: 0.72rem;
  font-weight: 800;
}

.guide-sources a {
  width: fit-content;
  color: var(--guide-text);
  font-weight: 720;
  text-underline-offset: 4px;
}

.guide-sources span {
  color: var(--guide-muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

.guide-page > .footer {
  margin-top: 18px;
}

@media (max-width: 860px) {
  .guide-cycle {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .guide-cycle-step + .guide-cycle-step {
    border-left: 0;
  }

  .guide-cycle-step:nth-child(even) {
    border-left: 1px solid var(--guide-line);
  }

  .guide-cycle-step:nth-child(n + 3) {
    border-top: 1px solid var(--guide-line);
  }

  .guide-choice {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .guide-page {
    width: min(calc(100% - 20px), 720px);
    margin-top: 10px;
  }

  .guide-header {
    align-items: stretch;
    gap: 10px;
  }

  .guide-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .guide-nav a {
    min-height: 38px;
    padding: 8px 10px;
  }

  .guide-hero {
    padding: 26px 20px;
  }

  .guide-hero h1 {
    font-size: clamp(1.75rem, 8vw, 2.2rem);
  }

  .guide-meta {
    display: grid;
  }

  .guide-meta > *::after {
    display: none;
  }

  .guide-hero-actions,
  .guide-choice-actions {
    align-items: stretch;
    flex-direction: column;
    width: 100%;
  }

  .guide-toc nav,
  .guide-principles,
  .guide-fit-grid {
    grid-template-columns: 1fr;
  }

  .guide-section {
    padding: 36px 8px;
  }

  .guide-cycle {
    grid-template-columns: 1fr;
  }

  .guide-cycle-step:nth-child(even) {
    border-left: 0;
  }

  .guide-cycle-step:nth-child(n + 2) {
    border-top: 1px solid var(--guide-line);
  }

  .guide-callout,
  .guide-evidence-note,
  .guide-choice {
    padding: 22px;
  }

}

@media (max-width: 425px) {
  .guide-page {
    width: min(calc(100% - 16px), 720px);
  }

  .guide-header .app-title {
    font-size: 1.75rem;
  }

  .guide-hero {
    padding: 22px 18px;
  }

  .guide-hero h1 {
    font-size: 1.65rem;
    line-height: 1.18;
  }

  .guide-title-line {
    display: block;
    white-space: nowrap;
  }

  .guide-lede,
  .guide-section > p:not(.guide-section-label) {
    font-size: 0.96rem;
    line-height: 1.65;
  }

  .guide-toc {
    padding: 16px 18px;
  }

  .guide-toc nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px 14px;
  }

  .guide-section {
    padding: 32px 6px;
  }

  .guide-section h2 {
    font-size: 1.35rem;
    line-height: 1.22;
  }

  .guide-section h3 {
    line-height: 1.3;
  }
}

@media (max-width: 375px) {
  .guide-header .app-title {
    font-size: 1.6rem;
  }

  .guide-nav {
    grid-template-columns: 1fr;
  }

  .guide-nav a {
    min-height: 44px;
  }

  .guide-hero {
    padding: 20px 16px;
  }

  .guide-hero h1 {
    font-size: 1.5rem;
  }

  .guide-kicker,
  .guide-section-label {
    font-size: 0.7rem;
    letter-spacing: 0.1em;
  }

  .guide-principles > div,
  .guide-fit-grid > div,
  .guide-cycle-step {
    padding: 16px;
  }
}

@media (max-width: 340px) {
  .guide-page {
    width: min(calc(100% - 12px), 720px);
  }

  .guide-header .app-title {
    font-size: 1.48rem;
  }

  .guide-hero {
    padding: 18px 14px;
  }

  .guide-hero h1 {
    font-size: 1.35rem;
  }

  .guide-lede,
  .guide-section > p:not(.guide-section-label) {
    font-size: 0.93rem;
  }

  .guide-toc {
    padding: 15px 14px;
  }

  .guide-toc a {
    font-size: 0.78rem;
  }

  .guide-section h2 {
    font-size: 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .guide-button,
  .guide-skip-link {
    transition: none;
  }
}