/* Lead form (js/lead-form.js) in the contact section. Colours, font and buttons come from the
   site's tokens in site.css; the form adds a field fill, a field outline and an error colour per
   theme. Contrast against the page: outline 3.4:1 light and 4.2:1 dark, error text 5.9:1 light
   and 7.9:1 dark. Calm on purpose: contact is the serious part of the page. */

.lead-form {
  --lf-field: #f8f6f1;
  --lf-border: #857d71;
  --lf-error: #a8261b;
  container: lead-form / inline-size;
  width: 100%;
  max-width: 40rem;
  margin-top: 28px;
}

:root[data-theme="dark"] .lead-form {
  --lf-field: #1b1e21;
  --lf-border: #767b80;
  --lf-error: #ff8a7d;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .lead-form {
    --lf-field: #1b1e21;
    --lf-border: #767b80;
    --lf-error: #ff8a7d;
  }
}

.lead-form [hidden] {
  display: none !important;
}

.lead-form p,
.lead-form h3 {
  margin: 0;
}

.lead-form__form,
.lead-form__fields {
  display: grid;
  gap: 24px;
}

.lead-form__field,
.lead-form__group {
  display: grid;
  align-content: start; /* an error under one field of a pair must not stretch the other one */
  gap: 8px;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.lead-form__label {
  padding: 0;
  font-size: 15px;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--fg);
}

.lead-form__group > .lead-form__label {
  margin-bottom: 2px; /* legend: no flex gap above the hint */
}

.lead-form__sublabel {
  font-size: 14px;
  line-height: 1.35;
  color: var(--fg-dim);
}

.lead-form__hint {
  font-size: 14px;
  line-height: 1.4;
  color: var(--fg-dim);
}

.lead-form__optional {
  margin-left: 4px;
  font-weight: 400;
  color: var(--fg-dim);
}

.lead-form__pair {
  display: grid;
  align-items: start;
  gap: 14px;
  margin-top: 4px;
}

@container lead-form (min-width: 520px) {
  .lead-form__pair {
    grid-template-columns: 1fr 1fr;
  }
}

/* Fields */
.lead-form__input {
  width: 100%;
  min-height: 52px;
  margin: 0;
  padding: 12px 16px;
  border: 1.5px solid var(--lf-border);
  border-radius: var(--radius, 12px);
  background: var(--lf-field);
  color: var(--fg);
  font: 400 17px/1.35 var(--font);
  letter-spacing: 0;
  caret-color: var(--fg);
  -webkit-appearance: none;
  appearance: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.lead-form__input::placeholder {
  color: var(--fg-dim);
  opacity: 1;
}

.lead-form__input:focus {
  border-color: var(--fg);
}

.lead-form__input:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

@media (hover: hover) {
  .lead-form__input:hover:not(:focus):not(:disabled):not([aria-invalid="true"]) {
    border-color: var(--fg);
  }
}

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

.lead-form__input:disabled {
  cursor: not-allowed;
}

.lead-form__textarea {
  min-height: 124px;
  max-height: 360px;
  line-height: 1.5;
  resize: vertical;
}

.lead-form__select {
  position: relative;
}

.lead-form__select .lead-form__input {
  padding-right: 48px;
  cursor: pointer;
}

/* The disabled first option «Выберите формат» reads as a placeholder until a format is picked. */
.lead-form__select .lead-form__input:invalid {
  color: var(--fg-dim);
}

.lead-form__select option {
  background: var(--bg);
  color: var(--fg);
}

.lead-form__chevron {
  position: absolute;
  top: 50%;
  right: 18px;
  width: 14px;
  height: 8px;
  margin-top: -4px;
  color: var(--fg);
  pointer-events: none;
  shape-rendering: crispEdges;
}

.lead-form__count {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.45;
  color: var(--fg-dim);
}

/* Consent */
.lead-form__consent {
  display: grid;
  gap: 6px;
}

.lead-form__check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.lead-form__checkbox {
  flex: none;
  width: 24px;
  height: 24px;
  margin: 0;
  accent-color: var(--fg);
  cursor: pointer;
}

.lead-form__checkbox:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.lead-form__checkbox[aria-invalid="true"] {
  outline: 2px solid var(--lf-error);
  outline-offset: 2px;
}

.lead-form__check label {
  padding-top: 1px;
  font-size: 16px;
  line-height: 1.45;
  cursor: pointer;
}

.lead-form__policy {
  padding-left: 36px;
  font-size: 15px;
  line-height: 1.45;
}

.lead-form__consent > .lead-form__error {
  padding-left: 36px;
}

/* Errors: text first, colour second, a pixel square like the site's list bullets. */
.lead-form__error {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 14.5px;
  line-height: 1.4;
  color: var(--lf-error);
}

.lead-form__error::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  background: currentColor;
  transform: translateY(-1px);
}

/* Links in the form text */
.lead-form__link {
  color: var(--fg);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.lead-form__link:hover {
  text-decoration-thickness: 2px;
}

.lead-form__link:focus-visible,
.lead-form .btn:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.lead-form__nowrap {
  white-space: nowrap;
}

/* Honeypot: off screen for people, still in the form for bots. */
.lead-form__hp {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Submit, status and the direct contacts */
.lead-form__foot {
  display: grid;
  justify-items: start;
  gap: 14px;
}

.lead-form__submit[aria-disabled="true"] {
  opacity: 0.72;
  cursor: progress;
}

.lead-form__status {
  max-width: 34rem;
  font-size: 15.5px;
  line-height: 1.45;
  color: var(--fg-dim);
}

.lead-form__status:empty {
  display: none;
}

.lead-form__status.is-error {
  color: var(--lf-error);
}

.lead-form__status.is-error .lead-form__link {
  color: inherit;
}

.lead-form__direct {
  font-size: 15px;
  line-height: 1.45;
  color: var(--fg-dim);
}

@container lead-form (max-width: 519px) {
  .lead-form__submit,
  .lead-form__actions .btn {
    width: 100%;
  }
}

/* Not connected yet: the fields stay visible but inactive, the buttons go straight to Gleb. */
.lead-form__form[data-state="offline"] .lead-form__fields {
  opacity: 0.55;
}

.lead-form__offline,
.lead-form__done {
  display: grid;
  justify-items: start;
  gap: 14px;
  padding: 22px 20px;
  border-radius: var(--radius, 12px);
  background: var(--surface);
}

.lead-form__offline-text {
  font-size: 17px;
  line-height: 1.45;
  font-weight: 500;
}

.lead-form__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  width: 100%;
}

/* Sent */
.lead-form__done-title {
  font-size: clamp(22px, 2.2vw, 28px);
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.lead-form__done-title:focus {
  outline: none; /* focused by the script so screen readers read it; it is not a control */
}

.lead-form__done-title::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 12px;
  background: var(--accent);
  vertical-align: 0.12em;
}

.lead-form__id {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.lead-form__done-text {
  max-width: 32rem;
  font-size: 17px;
  line-height: 1.5;
}

.lead-form__done-note {
  font-size: 15px;
  line-height: 1.45;
  color: var(--fg-dim);
}

@media (min-width: 700px) {
  .lead-form__offline,
  .lead-form__done {
    padding: 28px 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .lead-form__input {
    transition: none;
  }
}