/* ==========================================================================
   Amble — a weekend program
   Palette: ultramarine masthead over pale lilac paper, amber for the shortlist.
   Type:    Literata (a reading serif) for headings and times;
            DM Sans for interface and meta text.
   Layout:  a timeline. Each day is a vertical route; times sit in the gutter
            and every event is a stop on the line.
   ========================================================================== */

@font-face {
  font-family: "Literata";
  src: url("assets/literata.ttf") format("truetype");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "DM Sans";
  src: url("assets/dm-sans.ttf") format("truetype");
  font-weight: 100 1000;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink: #211b33;
  --ink-soft: #57506b;
  --ink-faint: #7a7390;
  --paper: #ece9f2;
  --panel: #fbfafd;
  --blue: #232a8c;
  --blue-deep: #171d67;
  --amber: #e8933a;
  --line: #d2cee0;
  --line-strong: #b7b2cc;
  --radius: 4px;
  --measure: 68ch;
  --font-serif: "Literata", Georgia, "Times New Roman", serif;
  --font-sans: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
p {
  margin: 0;
}

button,
input,
select {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2.5px solid var(--blue);
  outline-offset: 2px;
  border-radius: 2px;
}

.masthead :focus-visible,
.detail :focus-visible {
  outline-color: var(--amber);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 20;
  padding: 10px 16px;
  background: var(--amber);
  color: var(--blue-deep);
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius);
  transition: top 140ms ease;
}

.skip-link:focus {
  top: 12px;
}

/* ---------------------------------------------------------------- masthead */

.masthead {
  background: var(--blue);
  color: var(--panel);
  border-bottom: 4px solid var(--amber);
}

.masthead__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand__mark {
  color: var(--amber);
  display: inline-flex;
}

.brand__name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 27px;
  letter-spacing: -0.01em;
}

.masthead__when {
  font-size: 13px;
  letter-spacing: 0.02em;
  text-align: right;
  color: #d9d8f0;
}

.masthead__when time {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--panel);
}

.when__label {
  display: block;
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 600;
  color: #b9b8e0;
}

/* ------------------------------------------------------------------ layout */

.layout {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 286px minmax(0, 1fr);
  align-items: start;
}

/* -------------------------------------------------------------------- rail */

.rail {
  position: sticky;
  top: 0;
  padding: 34px 30px 44px 44px;
  border-right: 1px solid var(--line);
  min-height: 100vh;
}

.rail__title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 22px;
}

.field {
  margin-bottom: 20px;
}

.field__label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  margin-bottom: 7px;
}

.field__input,
.field__select {
  width: 100%;
  padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}

.field__input::placeholder {
  color: var(--ink-faint);
}

.field__select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1.5 6 6.5l5-5' fill='none' stroke='%23211b33' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 34px;
}

.rail__saved {
  margin-top: 4px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.toggle {
  width: 100%;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14.5px;
  font-weight: 600;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease;
}

.toggle__icon {
  flex: none;
}

.toggle__text {
  flex: 1;
  text-align: left;
}

.toggle__count {
  min-width: 22px;
  padding: 1px 6px;
  text-align: center;
  background: var(--line);
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink-soft);
}

.toggle[aria-pressed="true"] {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

.toggle[aria-pressed="true"] .toggle__icon path {
  fill: var(--amber);
  stroke: var(--amber);
}

.toggle[aria-pressed="true"] .toggle__count {
  background: var(--amber);
  color: var(--blue-deep);
}

.status {
  margin-top: 22px;
  font-size: 13px;
  color: var(--ink-faint);
  line-height: 1.5;
}

/* -------------------------------------------------------------------- main */

.main {
  padding: 40px 56px 96px;
  min-width: 0;
}

.hero {
  max-width: var(--measure);
  padding-bottom: 30px;
  margin-bottom: 8px;
}

.hero__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(34px, 4.4vw, 52px);
  line-height: 1.05;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.hero__lede {
  margin-top: 18px;
  max-width: 54ch;
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------- day groups */

.day {
  max-width: 760px;
}

.day__head {
  position: sticky;
  top: 0;
  z-index: 3;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 26px 0 11px;
  background: var(--paper);
  border-bottom: 2px solid var(--ink);
  margin-bottom: 26px;
}

.day__name {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1;
}

.day__date {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 300;
  color: var(--ink-faint);
  margin-left: 10px;
}

.day__count {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* --------------------------------------------------------------- event rows */

.day__events {
  position: relative;
}

.day__events::before {
  content: "";
  position: absolute;
  left: 77px;
  top: 10px;
  bottom: 34px;
  width: 1px;
  background: var(--line-strong);
}

.event {
  display: grid;
  grid-template-columns: 66px 24px minmax(0, 1fr);
}

.event__time {
  padding: 0 13px 0 0;
  text-align: right;
}

.time__start {
  display: block;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.time__end {
  display: block;
  margin-top: 3px;
  font-size: 12.5px;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}

.event__spine {
  position: relative;
}

.event__spine::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 5px;
  width: 11px;
  height: 11px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: var(--paper);
  border: 2.5px solid var(--dot);
  transition: background 160ms ease, transform 160ms ease;
}

.event.is-saved .event__spine::after {
  background: var(--dot);
  transform: translateX(-50%) scale(1.05);
}

.event__body {
  padding: 0 0 32px 15px;
  min-width: 0;
}

.event__cat {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 5px;
}

.event__cat::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--dot);
}

.event__title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.event__open {
  display: inline;
  padding: 0;
  border: 0;
  background: none;
  text-align: left;
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
  letter-spacing: inherit;
  color: inherit;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 4px;
  text-decoration-thickness: 2px;
  transition: text-decoration-color 140ms ease, color 140ms ease;
}

.event__open:hover,
.event__open:focus-visible {
  text-decoration-color: var(--amber);
}

.event__meta {
  margin-top: 7px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.event__meta .sep {
  color: var(--line-strong);
  padding: 0 6px;
}

.event__summary {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 58ch;
}

.event__saved {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--blue);
}

.event__saved svg {
  fill: var(--amber);
  stroke: var(--amber);
}

/* ------------------------------------------------------------- empty state */

.empty {
  max-width: 52ch;
  padding: 40px 0 10px;
}

.empty__title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 600;
  line-height: 1.2;
}

.empty__text {
  margin-top: 12px;
  color: var(--ink-soft);
}

.empty__reset {
  margin-top: 20px;
  padding: 11px 18px;
  background: var(--blue);
  color: #fff;
  border: 1px solid var(--blue);
  border-radius: var(--radius);
  font-weight: 600;
  cursor: pointer;
  transition: background 140ms ease;
}

.empty__reset:hover {
  background: var(--blue-deep);
}

/* ----------------------------------------------------------- detail dialog */

.detail-root:empty {
  display: none;
}

.detail-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  justify-content: flex-end;
  background: rgba(23, 29, 103, 0.42);
  animation: fade 160ms ease-out;
}

@keyframes fade {
  from {
    opacity: 0;
  }
}

.detail {
  width: min(540px, 100%);
  height: 100%;
  overflow-y: auto;
  background: var(--panel);
  border-left: 1px solid var(--line-strong);
  box-shadow: -24px 0 60px rgba(23, 29, 103, 0.22);
  padding: 26px 40px 64px;
  animation: slide-in 220ms cubic-bezier(0.22, 0.7, 0.3, 1);
}

@keyframes slide-in {
  from {
    transform: translateX(28px);
    opacity: 0;
  }
}

.detail__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 18px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.detail__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink-soft);
}

.detail__kicker::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--dot);
}

.detail__close {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 140ms ease, border-color 140ms ease;
}

.detail__close:hover {
  background: var(--paper);
  border-color: var(--ink);
}

.detail__title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 5vw, 36px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.detail__facts {
  margin: 22px 0 0;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 24px;
}

.fact__key {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-soft);
  margin-bottom: 3px;
}

.fact__val {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.35;
}

.detail__body {
  margin-top: 24px;
  max-width: 60ch;
  white-space: pre-line;
  font-size: 16.5px;
  line-height: 1.62;
  color: var(--ink);
}

.detail__save {
  margin-top: 30px;
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 18px;
  font-size: 15.5px;
  font-weight: 700;
  border-radius: var(--radius);
  cursor: pointer;
  background: transparent;
  border: 1.5px solid var(--blue);
  color: var(--blue);
  transition: background 150ms ease, color 150ms ease, border-color 150ms ease;
}

.detail__save svg {
  fill: none;
  stroke: currentColor;
}

.detail__save:hover {
  background: var(--paper);
}

.detail__save[aria-pressed="true"] {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

.detail__save[aria-pressed="true"] svg {
  fill: var(--amber);
  stroke: var(--amber);
}

.noscript {
  max-width: 640px;
  margin: 40px auto;
  padding: 16px 20px;
  background: var(--panel);
  border-left: 3px solid var(--amber);
}

/* --------------------------------------------------------------- responsive */

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .rail {
    position: static;
    min-height: 0;
    padding: 26px 28px 30px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .rail__title {
    margin-bottom: 16px;
  }

  .rail__fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .main {
    padding: 34px 28px 80px;
  }
}

@media (max-width: 700px) {
  .masthead__inner {
    padding: 15px 20px;
    align-items: flex-start;
  }

  .masthead__when {
    font-size: 12px;
  }

  .when__label {
    display: none;
  }

  .rail {
    padding: 22px 20px 26px;
  }

  .rail__fields {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .main {
    padding: 28px 20px 72px;
  }

  .hero__lede {
    font-size: 15.5px;
  }

  .day__head {
    padding-top: 20px;
  }

  .day__name,
  .day__date {
    font-size: 25px;
  }

  .day__count {
    display: none;
  }

  .day__events::before {
    display: none;
  }

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

  .event__time {
    text-align: left;
    padding: 0 0 6px;
  }

  .time__start,
  .time__end {
    display: inline;
    font-size: 14px;
    font-weight: 600;
    color: var(--ink-soft);
  }

  .time__end {
    margin: 0;
  }

  .time__end::before {
    content: " – ";
    color: var(--ink-faint);
  }

  .event__spine {
    display: none;
  }

  .event__body {
    padding: 0 0 28px;
  }

  .detail {
    padding: 18px 20px 56px;
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}