/* ==========================================================================
   MSM Swiss Transport — socle commun (site public, réservation, admin)
   Jetons de design, typographie, boutons, champs, autocomplétion.
   ========================================================================== */

/* -- Polices ------------------------------------------------------------- */

@font-face {
  font-family: "Switzer Variable";
  src: url("../../assets/fonts/Switzer-Variable.woff2") format("woff2"),
    url("../../assets/fonts/Switzer-Variable.woff") format("woff");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Redaction Italic";
  src: url("../../assets/fonts/Redaction-Italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

/* -- Jetons -------------------------------------------------------------- */

:root {
  /* Couleurs de la marque */
  --light: #ffffff;
  --paper: #f5f5f5;
  --gray: #bfbfbf;
  --dark: #171717;
  --ink: #1c2c3c; /* blue whale */
  --camel: #c3a158;

  /* Dérivés accessibles (contrastes WCAG AA vérifiés) */
  --ink-2: #55616d; /* texte secondaire sur clair — 6.3:1 */
  --camel-ink: #806428; /* camel lisible sur clair — 5.6:1 */
  --camel-hover: #d2b673;
  --line: rgba(28, 44, 60, 0.14);
  --line-strong: rgba(28, 44, 60, 0.28);
  --field-border: #7c858f; /* contour de champ — 3.7:1 */
  --placeholder: #66717c;
  --success: #198754;
  --error: #c8102e;
  --error-inv: #ff8a95;

  /* Thème courant (surchargé par section) */
  --bg: var(--light);
  --fg: var(--ink);
  --fg-2: var(--ink-2);
  --accent: var(--camel-ink);
  --rule: var(--line);
  --focus: var(--ink);

  /* Typographie */
  --font-sans: "Switzer Variable", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Redaction Italic", "Iowan Old Style", "Times New Roman", Times, serif;
  --fs-display: clamp(2.5rem, 1.1rem + 5.6vw, 6.25rem);
  --fs-h2: clamp(2rem, 1.25rem + 3vw, 4rem);
  --fs-h3: clamp(1.375rem, 1.2rem + 0.7vw, 1.75rem);
  --fs-lead: clamp(1.0625rem, 1rem + 0.35vw, 1.25rem);
  --fs-small: 0.875rem;
  --fs-eyebrow: 0.75rem;

  /* Mise en page */
  --gutter: clamp(1.5rem, 0.5rem + 3.4vw, 4rem);
  --maxw: 92rem;
  --section-pad: clamp(4.5rem, 2.5rem + 8vw, 10rem);
  --block-gap: clamp(2.5rem, 1.5rem + 3.5vw, 5rem);
  --header-h: 4.5rem;
  --radius: 2px;

  /* Mouvement */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
}

@media (min-width: 64em) {
  :root {
    --header-h: 5.25rem;
  }
}

/* -- Base ---------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: 1.5rem;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  -webkit-tap-highlight-color: transparent;
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
dd,
figure,
fieldset,
address {
  margin: 0;
}

ul[role="list"],
ol[role="list"] {
  list-style: none;
  padding: 0;
}

fieldset {
  border: 0;
  padding: 0;
  min-width: 0;
}

address {
  font-style: normal;
}

img,
picture,
video,
svg {
  display: block;
  max-width: 100%;
}

img,
video {
  height: auto;
}

a {
  color: inherit;
}

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

button {
  -webkit-tap-highlight-color: transparent;
}

[hidden] {
  display: none !important;
}

::selection {
  background: var(--camel);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 200;
  padding: 0.75rem 1.25rem;
  background: var(--ink);
  color: var(--light);
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: none;
  outline: 2px solid var(--camel);
}

.icon {
  flex: none;
}

/* -- Mise en page -------------------------------------------------------- */

.wrap {
  width: min(100% - 2 * var(--gutter), var(--maxw) - 2 * var(--gutter));
  margin-inline: auto;
}

/* -- Typographie --------------------------------------------------------- */

.title {
  font-size: var(--fs-h2);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  text-wrap: balance;
}

.title--display {
  font-size: var(--fs-display);
  font-weight: 300;
  line-height: 0.98;
  letter-spacing: -0.03em;
}

/* L'accent éditorial : Redaction Italic, en camel, bas de casse */
.title em,
.accent {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  text-transform: none;
  letter-spacing: -0.01em;
  color: var(--accent);
}

.lead {
  font-size: var(--fs-lead);
  line-height: 1.55;
  color: var(--fg-2);
  max-width: 54ch;
  text-wrap: pretty;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow__num {
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

/* -- Liens --------------------------------------------------------------- */

.link {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  text-decoration-color: color-mix(in srgb, currentColor 45%, transparent);
  transition: text-decoration-color 0.2s ease;
}

.link--big {
  font-size: clamp(1.25rem, 1.05rem + 0.9vw, 1.75rem);
  line-height: 1.3;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  min-height: 2.75rem;
  padding: 0;
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: inherit;
  text-decoration: none;
  background: none;
  border: 0;
  cursor: pointer;
}

.link-arrow > span {
  background: linear-gradient(currentColor, currentColor) 0 100% / 100% 1px no-repeat;
  padding-bottom: 0.2em;
}

.link-arrow .icon {
  transition: transform 0.25s var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .link:hover {
    text-decoration-color: currentColor;
  }

  a.link-arrow:hover .icon,
  button.link-arrow:hover .icon,
  a:hover > * > .link-arrow .icon {
    transform: translateX(0.25rem);
  }
}

/* -- Sélecteur de langue -------------------------------------------------- */

.lang ul {
  display: flex;
  align-items: center;
  gap: 0.125rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.lang a {
  display: grid;
  place-items: center;
  min-width: 2.75rem;
  min-height: 2.75rem;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-decoration: none;
  opacity: 0.72;
  transition: opacity 0.2s ease;
}

.lang a[aria-current="true"] {
  opacity: 1;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.4em;
}

@media (hover: hover) and (pointer: fine) {
  .lang a:hover {
    opacity: 1;
  }
}

/* -- Boutons ------------------------------------------------------------- */

.btn {
  --btn-bg: var(--ink);
  --btn-fg: var(--light);
  --btn-bd: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  min-height: 3.25rem;
  padding: 0.75rem 1.625rem;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--radius);
  cursor: pointer;
  user-select: none;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease,
    transform 0.16s var(--ease-out);
}

.btn:active {
  transform: scale(0.97);
}

.btn[disabled],
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.55;
}

.btn[disabled]:active,
.btn[aria-disabled="true"]:active {
  transform: none;
}

.btn--primary {
  --btn-bg: var(--camel);
  --btn-fg: var(--ink);
  --btn-bd: var(--camel);
}

.btn--light {
  --btn-bg: var(--light);
  --btn-fg: var(--ink);
  --btn-bd: var(--light);
}

.btn--outline {
  --btn-bg: transparent;
  --btn-fg: var(--fg);
  --btn-bd: currentColor;
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--fg);
  --btn-bd: transparent;
  padding-inline: 0.75rem;
}

.btn--sm {
  min-height: 2.75rem;
  padding: 0.5rem 1.125rem;
  font-size: 0.875rem;
}

.btn--block {
  width: 100%;
}

@media (hover: hover) and (pointer: fine) {
  .btn:not([disabled]):not([aria-disabled="true"]):hover {
    --btn-bg: var(--light);
    --btn-fg: var(--ink);
  }

  .btn--primary:not([disabled]):not([aria-disabled="true"]):hover {
    --btn-bg: var(--camel-hover);
    --btn-bd: var(--camel-hover);
    --btn-fg: var(--ink);
  }

  .btn--light:not([disabled]):not([aria-disabled="true"]):hover {
    --btn-bg: transparent;
    --btn-fg: var(--light);
  }

  .btn--outline:not([disabled]):not([aria-disabled="true"]):hover {
    --btn-bg: var(--fg);
    --btn-fg: var(--bg);
    --btn-bd: var(--fg);
  }

  .btn--ghost:not([disabled]):not([aria-disabled="true"]):hover {
    --btn-bg: color-mix(in srgb, currentColor 8%, transparent);
    --btn-fg: var(--fg);
  }
}

/* Indicateur d'attente dans un bouton */
.btn.is-loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn.is-loading::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 1.125rem;
  height: 1.125rem;
  border: 2px solid var(--btn-fg);
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* -- Champs -------------------------------------------------------------- */

.field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  min-width: 0;
}

.field__label {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.125rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.field__label small {
  font-size: inherit;
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: none;
}

.field__input {
  -webkit-appearance: none;
  appearance: none;
  display: block;
  width: 100%;
  min-height: 3rem;
  margin: 0;
  padding: 0.625rem 0.875rem;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--ink);
  background: var(--light);
  border: 1px solid var(--field-border);
  border-radius: var(--radius);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field__input::placeholder {
  color: var(--placeholder);
  opacity: 1;
}

.field__input:focus-visible {
  outline: none;
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(28, 44, 60, 0.18);
}

.field__input[aria-invalid="true"] {
  border-color: var(--error);
  box-shadow: inset 0 0 0 1px var(--error);
}

textarea.field__input {
  min-height: 5.5rem;
  resize: vertical;
}

select.field__input {
  padding-right: 2.5rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%231c2c3c' stroke-width='1.5'%3E%3Cpath d='m1 1.5 5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.875rem center;
  cursor: pointer;
}

/* Champs date/heure natifs : alignement cohérent sur WebKit / iOS */
input[type="date"].field__input,
input[type="time"].field__input {
  min-width: 0;
  text-align: left;
}

input[type="date"].field__input::-webkit-date-and-time-value,
input[type="time"].field__input::-webkit-date-and-time-value {
  text-align: left;
}

input[type="date"].field__input::-webkit-calendar-picker-indicator,
input[type="time"].field__input::-webkit-calendar-picker-indicator {
  cursor: pointer;
  opacity: 0.7;
}

.field__hint {
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--ink-2);
}

.field__error {
  font-size: 0.8125rem;
  line-height: 1.4;
  font-weight: 500;
  color: var(--error);
}

.field__error:empty {
  display: none;
}

/* -- Sélecteur segmenté (Transfert / À l'heure) --------------------------- */

.segmented {
  display: inline-flex;
  gap: 1px;
}

.segmented__item {
  position: relative;
  display: block;
}

.segmented__item input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.segmented__item span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--seg-fg, var(--ink));
  background: var(--seg-bg, var(--paper));
  transition: background-color 0.2s ease, color 0.2s ease;
}

.segmented__item:first-child span {
  border-radius: var(--radius) 0 0 var(--radius);
}

.segmented__item:last-child span {
  border-radius: 0 var(--radius) var(--radius) 0;
}

.segmented__item input:checked + span {
  color: var(--seg-fg-on, var(--light));
  background: var(--seg-bg-on, var(--ink));
}

.segmented__item input:focus-visible + span {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  position: relative;
  z-index: 1;
}

/* -- Autocomplétion d'adresses ------------------------------------------- */

.ac {
  position: relative;
}

.ac__list {
  position: absolute;
  z-index: 60;
  top: calc(100% + 0.5rem);
  left: 0;
  right: 0;
  min-width: min(22rem, 86vw);
  max-height: 21rem; /* plafond : le script la réduit à la place réellement disponible */
  margin: 0;
  padding: 0.375rem 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  list-style: none;
  text-align: left;
  color: var(--ink);
  background: var(--light);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: 0 24px 48px -16px rgba(13, 22, 34, 0.32);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transform-origin: top center;
  transition: opacity 0.15s var(--ease-out), transform 0.15s var(--ease-out), visibility 0s linear 0.15s;
}

.ac.is-above .ac__list {
  top: auto;
  bottom: calc(100% + 0.5rem);
  transform: translateY(4px);
  transform-origin: bottom center;
  box-shadow: 0 -24px 48px -16px rgba(13, 22, 34, 0.32); /* l'ombre part vers le haut, pas sur le champ */
}

.ac.is-end .ac__list {
  right: 0;
  left: auto;
}

.ac.is-open .ac__list {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition-delay: 0s;
}

.ac__group {
  padding: 0.5rem 1rem 0.25rem;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.ac__option {
  display: grid;
  grid-template-columns: 1.25rem minmax(0, 1fr);
  align-items: start;
  gap: 0.75rem;
  min-height: 2.75rem;
  padding: 0.5625rem 1rem;
  font-size: 0.9375rem;
  line-height: 1.35;
  cursor: pointer;
}

.ac__option .icon {
  margin-top: 0.125rem;
  color: var(--camel-ink);
}

.ac__option strong {
  display: block;
  font-weight: 500;
  overflow-wrap: anywhere;
}

.ac__option small {
  display: block;
  font-size: 0.8125rem;
  color: var(--ink-2);
  overflow-wrap: anywhere;
}

.ac__option[aria-selected="true"] {
  background: var(--paper);
  box-shadow: inset 2px 0 0 var(--camel);
}

.ac__status {
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: var(--ink-2);
}

.ac.is-loading::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 0.25rem;
  width: 0.875rem;
  height: 0.875rem;
  margin-top: -0.4375rem;
  border: 1.5px solid var(--ink-2);
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  pointer-events: none;
}

/* -- Formulaire de départ (étape 1) --------------------------------------- */

.start {
  --seg-bg: rgba(13, 22, 34, 0.62);
  --seg-fg: var(--light);
  --seg-bg-on: var(--light);
  --seg-fg-on: var(--ink);
  position: relative;
}

.start .segmented__item span {
  border-radius: 0;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.start .segmented__item:first-child span {
  border-radius: var(--radius) 0 0 0;
}

.start .segmented__item:last-child span {
  border-radius: 0 var(--radius) 0 0;
}

.start__fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  color: var(--ink);
  background: var(--light);
  border-radius: 0 var(--radius) var(--radius) var(--radius);
  box-shadow: 0 30px 60px -30px rgba(13, 22, 34, 0.55);
}

.start .field {
  gap: 0.125rem;
  padding: 0.75rem 1rem 0.625rem;
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.15s ease;
}

.start .field--place,
.start .field--hours {
  grid-column: 1 / -1;
}

.start .field--time {
  border-left: 1px solid var(--line);
}

.start .field__label {
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
}

.start .field__input {
  min-height: 2rem;
  padding: 0.125rem 0;
  border: 0;
  border-radius: 0;
  background-color: transparent;
  box-shadow: none;
}

.start select.field__input {
  padding-right: 1.5rem;
  background-position: right 0.125rem center;
}

.start .field:focus-within {
  box-shadow: inset 0 -2px 0 var(--ink);
}

.start .field.is-invalid {
  box-shadow: inset 0 -2px 0 var(--error);
}

.start .field.is-invalid .field__label {
  color: var(--error);
}

/* La liste de suggestions s'aligne sur la case du champ */
.start .ac__list {
  right: -1rem;
  left: -1rem;
}

/* Vers le haut, elle se pose sur le bord du formulaire : pas d'interstice où percent les onglets */
.start .ac.is-above .ac__list {
  margin-bottom: -0.5rem;
}

.start__submit {
  grid-column: 1 / -1;
  margin: 0.625rem;
  min-height: 3.5rem;
}

.start__message {
  margin-top: 0.75rem;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.45;
  color: var(--ink);
  background: var(--light);
  border-left: 3px solid var(--error);
  border-radius: var(--radius);
}

/* Tablettes : deux rangées — les lieux, puis la date, l'heure et le bouton */
@media (min-width: 40em) {
  .start__fields {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .start .field--place,
  .start .field--hours {
    grid-column: span 3;
  }

  .start .field--place ~ .field--place,
  .start .field--hours {
    border-left: 1px solid var(--line);
  }

  .start .field--date,
  .start .field--time {
    grid-column: span 2;
    border-bottom: 0;
  }

  .start__submit {
    grid-column: span 2;
  }
}

/* Bureau : une seule rangée */
@media (min-width: 64em) {
  .start__fields {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1.35fr) minmax(9.5rem, 0.7fr) minmax(7.5rem, 0.5fr) auto;
    align-items: stretch;
  }

  .start .field {
    justify-content: center;
    padding: 0.875rem 1.25rem 0.75rem;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .start .field:first-child {
    border-left: 0;
  }

  .start .ac__list {
    right: -1.25rem;
    left: -1.25rem;
  }

  .start .field--place,
  .start .field--hours,
  .start .field--date,
  .start .field--time {
    grid-column: auto;
  }

  .start__submit {
    grid-column: auto;
    margin: 0.625rem;
    min-height: 3.5rem;
    padding-inline: 1.75rem;
  }
}