body.calendar-page .hero {
  grid-template-columns: minmax(0, 0.96fr) minmax(320px, 0.64fr);
  /* The phone preview runs tall; don't stretch the copy panel to match it. */
  align-items: start;
}

body.calendar-page h1 {
  max-width: 11ch;
  font-size: clamp(3rem, 5.7vw, 5.2rem);
}

.calendar-mobile-evidence h2,
.calendar-desktop-evidence h2 {
  max-width: 10ch;
}

.calendar-mobile-evidence .device-preview {
  margin-top: 26px;
}

.calendar-desktop-evidence {
  display: grid;
  gap: 22px;
  margin-top: 18px;
  padding: clamp(26px, 4vw, 42px);
}

.desktop-evidence-copy {
  max-width: 760px;
}

.calendar-mode-control {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.38);
}

:root[data-mode="night"] .calendar-mode-control {
  background: rgba(255, 255, 255, 0.055);
}

.calendar-mode-control span {
  padding: 0 8px 0 10px;
  color: var(--muted);
  font-size: 0.66rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

.calendar-mode-control button {
  min-height: 30px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-size: 0.72rem;
  font-weight: 850;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.calendar-mode-control button:hover,
.calendar-mode-control button:focus-visible,
.calendar-mode-control button.is-active {
  border-color: var(--line-bright);
  background: linear-gradient(135deg, rgba(26, 165, 239, 0.16), rgba(27, 191, 154, 0.14));
  color: var(--blue);
  outline: none;
}

.calendar-mode-control button:focus-visible {
  outline: 2px solid rgba(22, 132, 222, 0.42);
  outline-offset: 3px;
}

.device-preview {
  min-width: 0;
  margin: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.58), rgba(255, 255, 255, 0.18)),
    var(--glass);
}

:root[data-mode="night"] .device-preview {
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.025)),
    rgba(0, 0, 0, 0.18);
}

.device-preview figcaption {
  display: grid;
  gap: 4px;
  margin-bottom: 12px;
}

.device-preview figcaption span,
.complexity-grid article span {
  color: var(--blue);
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.device-preview figcaption strong {
  color: var(--text);
  font-size: 1rem;
  line-height: 1.2;
}

.device-frame {
  --preview-scale: 1;
  position: relative;
  width: 100%;
  overflow: hidden;
  border: 1px solid rgba(87, 124, 162, 0.24);
  border-radius: 18px;
  background: #fff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.45),
    0 18px 38px rgba(15, 37, 55, 0.12);
}

.device-frame-phone {
  width: min(100%, 326px);
  border-radius: 28px;
}

.device-frame iframe {
  display: block;
  border: 0;
  transform: scale(var(--preview-scale));
  transform-origin: top left;
}

.calendar-purpose {
  grid-template-columns: minmax(0, 0.92fr) minmax(300px, 1.08fr);
}

.process-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-list li {
  position: relative;
  min-height: 70px;
  padding: 16px 18px 16px 46px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.36);
  color: var(--muted);
  line-height: 1.54;
}

:root[data-mode="night"] .process-list li {
  background: rgba(255, 255, 255, 0.055);
}

.process-list li::before {
  content: "";
  position: absolute;
  top: 20px;
  left: 18px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green), var(--cyan));
  box-shadow: 0 0 0 5px rgba(26, 165, 239, 0.1);
}

.calendar-complexity h2 {
  max-width: 13ch;
}

.complexity-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.complexity-grid article {
  min-height: 210px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.36);
}

:root[data-mode="night"] .complexity-grid article {
  background: rgba(255, 255, 255, 0.055);
}

.complexity-grid h3 {
  margin: 14px 0 0;
  font-family: var(--serif);
  font-size: 1.45rem;
  line-height: 1;
}

.complexity-grid p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.56;
}

.artifact-link {
  justify-self: start;
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  margin-top: 22px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.42);
  color: var(--text);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.artifact-link:hover,
.artifact-link:focus-visible {
  border-color: var(--line-bright);
  background: rgba(145, 239, 255, 0.14);
  color: var(--blue);
  transform: translateY(-1px);
  outline: none;
}

@media (max-width: 980px) {
  body.calendar-page .hero,
  .calendar-purpose {
    grid-template-columns: 1fr;
  }

  .calendar-mobile-evidence .device-preview {
    width: min(100%, 380px);
  }

  .complexity-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  body.calendar-page h1 {
    font-size: clamp(2.7rem, 14vw, 4.7rem);
  }

  .device-preview {
    padding: 12px;
  }

  .calendar-mode-control {
    align-items: stretch;
    flex-wrap: wrap;
    border-radius: 18px;
  }

  .device-frame-phone {
    width: 100%;
  }

  .complexity-grid {
    grid-template-columns: 1fr;
  }

  .complexity-grid article {
    min-height: unset;
  }
}