/*
  Site layout and EXTENSION components.
  Loads after tokens.css and ds-bundle.css.
*/

/* ---------- Site layout ---------- */
[hidden] { display: none !important; }
.efi-field__opt { font-weight: 400; }
.ext-error-prefix { font-weight: 700; }
.ext-form-alert:not([hidden]) { display: flex; align-items: flex-start; gap: 8px; }
.ext-textarea--short { min-height: 88px; }
.ext-request-context { font-weight: 600; margin-bottom: 24px; }
.login-card .form { gap: 20px; }
.efi-page a:not([class]) { color: var(--color-forest); text-underline-offset: 3px; }
.efi-page a:not([class]):hover { text-decoration-thickness: 2px; }
.efi-surface-navy a:not([class]), .efi-surface-forest a:not([class]) { color: var(--color-white); }
.efi-surface-navy a:not([class]):hover, .efi-surface-forest a:not([class]):hover { color: var(--color-mint); }
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: absolute;
  left: 24px;
  top: -200px;
  z-index: 100;
  padding: 12px 16px;
  border-radius: var(--radius);
  background: var(--color-white);
  color: var(--color-navy);
  font-weight: 700;
  text-decoration: none;
}
.skip-link:focus { top: 16px; }
main:focus { outline: none; }

.measure { max-width: var(--measure); }
.section-head { display: flex; flex-direction: column; gap: 12px; max-width: var(--measure); margin-bottom: 48px; }
.section-head--tight { margin-bottom: 32px; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.fineprint { color: var(--color-series-on-navy); max-width: var(--measure-hero); }
.placeholder-note { font-size: 14px; line-height: 20px; color: var(--color-olive); margin: 0; }
.efi-surface-navy .placeholder-note, .efi-surface-forest .placeholder-note { color: var(--color-series-on-navy); }

/* Surface modifiers: keep the efi-surface-* class for text and link colors */
.ext-ground-hero   { background: var(--ext-gradient-hero); }
.ext-ground-band   { background: var(--ext-gradient-band); }
.ext-ground-footer { background: var(--ext-gradient-footer); }
.ext-ground-sky    { background: var(--ext-sky); }

/* Inner-page hero */
.page-hero { padding-block: 96px; }
.page-hero__text { max-width: var(--measure-hero); display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }
.page-hero--with-panel { padding-bottom: 48px; }
@media (max-width: 767px) { .page-hero { padding-block: 64px; } .page-hero--with-panel { padding-bottom: 32px; } }

/* Events hero */
.ext-dateline { display: flex; flex-wrap: wrap; column-gap: 8px; row-gap: 2px; font-weight: 600; }
.ext-dateline__seg { white-space: nowrap; }
.ext-dateline__sep { color: var(--color-series-on-navy); }
.hero-visual {
  --bleed: max(var(--gutter), (100vw - var(--container-width)) / 2);
  position: relative;
  height: clamp(320px, 38vw, 540px);
  margin-right: calc(-1 * var(--bleed));
}
.hero-visual svg { display: block; width: 100%; height: 100%; }
@media (max-width: 899px) { .hero-visual { height: 280px; } }
.hero-speakers { margin-top: 64px; padding-top: 64px; border-top: 1px solid var(--color-divider-dark); display: flex; flex-direction: column; gap: 24px; }
.hero-speakers .efi-eyebrow { color: var(--color-series-on-navy); }
@media (max-width: 767px) { .hero-speakers { margin-top: 48px; padding-top: 48px; } }

/* ==================================================================
   EXTENSION components
   Built from system tokens plus ext-* tokens. Propose these to the
   Live Playbook Sessions Design System.
   ================================================================== */

/* EXTENSION: SpeakerPanel light variant */
.efi-speakers--light {
  --speaker-divider: var(--color-divider-light);
  background: var(--color-white);
  color: var(--color-navy);
}
.efi-speakers--light.efi-speakers--on-white { background: var(--color-mint); }
.efi-speakers--light .efi-speaker__name { color: var(--color-navy); }
.efi-speakers--light .efi-speaker__meta { color: var(--color-navy); }
.efi-speaker__session { margin: 8px 0 0; font-size: 14px; line-height: 20px; }
@media (min-width: 1024px) {
  .efi-speakers[style*="--cols: 3"] .efi-speaker:nth-child(n) { border-left: 1px solid var(--speaker-divider); border-top: 0; }
  .efi-speakers[style*="--cols: 3"] .efi-speaker:nth-child(3n + 1) { border-left: 0; }
  .efi-speakers[style*="--cols: 3"] .efi-speaker:nth-child(n + 4) { border-top: 1px solid var(--speaker-divider); }
}

/* EXTENSION: EventCard */
.ext-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; list-style: none; margin: 0; padding: 0; }
@media (max-width: 1023px) { .ext-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 767px)  { .ext-card-grid { grid-template-columns: minmax(0, 1fr); } }
.ext-event-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--color-white);
  border: 1px solid var(--color-divider-light);
  border-radius: var(--radius);
  overflow: hidden;
}
.ext-event-card--on-white { background: var(--color-mint); }
.ext-event-card__thumb { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; background: var(--color-navy); }
.ext-event-card__body { display: flex; flex-direction: column; gap: 16px; padding: 24px; flex: 1; }
.ext-event-card__title {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -0.5px;
  font-size: var(--type-session-size);
  line-height: var(--type-session-line);
  margin: 0;
  text-wrap: balance;
}
.ext-event-card__summary {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.ext-event-card__speakers { font-size: 14px; line-height: 20px; margin: 0; }
.ext-event-card__footer { margin-top: auto; padding-top: 8px; }
.ext-date { display: flex; align-items: center; gap: 16px; }
.ext-date__block {
  flex: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: var(--radius);
  background: var(--color-navy);
  color: var(--color-white);
}
.ext-date__month { font-size: 13px; line-height: 16px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; }
.ext-date__day { font-family: var(--font-serif); font-weight: 600; font-size: 24px; line-height: 28px; }
.ext-date__meta { font-size: 14px; line-height: 20px; font-weight: 600; color: var(--color-olive); margin: 0; }
.ext-tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }
.ext-empty { padding: 32px; border: 1px dashed var(--color-field-border); border-radius: var(--radius); display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }

/* EXTENSION: Feature band */
.ext-band__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px 48px; }
.ext-band__inner .efi-h3 { max-width: var(--measure); }
.ext-band { padding-block: 64px; }

/* EXTENSION: Benefit card */
.ext-benefit-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; list-style: none; margin: 0; padding: 0; }
@media (max-width: 1023px) { .ext-benefit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 767px)  { .ext-benefit-grid { grid-template-columns: minmax(0, 1fr); } }
.ext-benefit {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
  padding: 28px 24px 24px;
  background: var(--color-white);
  border: 1px solid var(--color-divider-light);
  border-radius: var(--radius);
  overflow: hidden;
}
.ext-benefit::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--ext-gradient-rule); }

/* EXTENSION: InsightTile */
.ext-tile-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; list-style: none; margin: 0; padding: 0; }
@media (max-width: 1023px) { .ext-tile-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 767px)  { .ext-tile-grid { grid-template-columns: minmax(0, 1fr); } }
.ext-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--color-white);
  border: 1px solid var(--color-divider-light);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .15s ease, box-shadow .15s ease;
}
.ext-tile:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(20, 49, 81, 0.12); }
.ext-tile:has(.ext-tile__link:focus-visible) { outline: 2px solid var(--color-navy); outline-offset: 2px; }
.ext-tile__media { position: relative; aspect-ratio: 16 / 9; background: var(--color-navy); }
.ext-tile__media img { display: block; width: 100%; height: 100%; object-fit: cover; }
.ext-tile__badge, .ext-tile__sponsor {
  position: absolute;
  top: 12px;
  z-index: 2;
  padding: 2px 8px;
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 20px;
  font-weight: 600;
}
.ext-tile__badge { left: 12px; background: var(--ext-teal); color: var(--color-white); }
.ext-tile__sponsor { right: 12px; background: var(--ext-sand); color: var(--color-navy); }
.ext-tile__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  background: var(--ext-gradient-tile-title);
  color: var(--color-white);
}
.ext-tile__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -0.5px;
  font-size: 20px;
  line-height: 28px;
}
.ext-tile__link { color: var(--color-white); text-decoration: none; }
.ext-tile__link:focus-visible { outline: none; }
.ext-tile__link::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.ext-tile__ext { flex: none; margin-top: 4px; }
.ext-tile__body { display: flex; flex-direction: column; gap: 12px; flex: 1; padding: 16px 20px 20px; }
.ext-tile__desc { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin: 0; }
.ext-tile__source { margin: auto 0 0; font-size: 14px; line-height: 20px; color: var(--color-olive); font-weight: 600; }

/* EXTENSION: FilterPanel */
.ext-filter-panel {
  margin-top: 48px;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--color-divider-dark);
  background: var(--color-card-surface-dark);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  color: var(--color-white);
  display: grid;
  gap: 24px;
}
.ext-filter-panel :focus-visible { outline-color: var(--color-white); }
.ext-filter-panel .efi-field__label, .ext-filter-panel .ext-chips legend, .ext-filter-panel .ext-results { color: var(--color-white); }
.ext-filter-panel .ext-results { color: var(--color-series-on-navy); font-weight: 600; }
/* Inputs keep a solid white fill so field text stays on a white ground */
.ext-filter-panel .efi-input { border-color: transparent; }
.ext-filter-panel .efi-input:focus { border-color: var(--color-forest); box-shadow: 0 0 0 2px var(--color-white); }
.ext-filter-panel .ext-search svg { color: var(--color-navy); }
.ext-filter-panel .ext-chip { border-color: var(--color-nav-hover-underline); color: var(--color-white); }
.ext-filter-panel .ext-chip:hover { background: var(--color-divider-dark); border-color: var(--color-white); }
.ext-filter-panel .ext-chip[aria-pressed="true"] { background: var(--color-white); border-color: var(--color-white); color: var(--color-navy); }
.ext-filter-row { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr) auto; gap: 16px; align-items: end; }
@media (max-width: 1023px) { .ext-filter-row { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } .ext-filter-row > :first-child { grid-column: 1 / -1; } }
@media (max-width: 767px)  { .ext-filter-row { grid-template-columns: minmax(0, 1fr); } }
.ext-search { position: relative; }
.ext-search svg { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); pointer-events: none; }
.ext-search .efi-input { padding-left: 42px; }
.ext-results { font-weight: 600; margin: 0; }
.ext-chips { border: 0; margin: 0; padding: 0; min-width: 0; }
.ext-chips legend { padding: 0; margin-bottom: 12px; font-weight: 600; }
.ext-chips__list { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }

/* EXTENSION: FilterChip */
.ext-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  padding: 4px 14px;
  border: 1.5px solid var(--color-navy);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-navy);
  font: 600 14px/20px var(--font-sans);
  cursor: pointer;
}
.ext-chip:hover { background: var(--color-white); }
.ext-chip svg { display: none; }
.ext-chip[aria-pressed="true"] { background: var(--color-navy); color: var(--color-white); }
.ext-chip[aria-pressed="true"] svg { display: block; }
@media (max-width: 767px) { .ext-chip { min-height: 44px; } }

/* EXTENSION: Select, Textarea, FileInput, RadioGroup */
.ext-select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 40px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none' stroke='%23143151' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  cursor: pointer;
}
.ext-textarea { min-height: 144px; resize: vertical; }
.ext-file { padding: 6px; cursor: pointer; }
.ext-file::file-selector-button {
  margin-right: 12px;
  min-height: 30px;
  padding: 4px 14px;
  border: 1.5px solid var(--color-navy);
  border-radius: var(--radius);
  background: var(--color-white);
  color: var(--color-navy);
  font: 700 14px/20px var(--font-sans);
  cursor: pointer;
}
.ext-file::file-selector-button:hover { background: var(--color-navy); color: var(--color-white); }
.ext-fieldset { border: 0; margin: 0; padding: 0; min-width: 0; display: flex; flex-direction: column; gap: 12px; }
.ext-fieldset > legend { padding: 0; margin-bottom: 12px; font-weight: 600; font-size: 16px; line-height: 24px; }
.ext-radio-row { display: flex; flex-wrap: wrap; gap: 12px 24px; }
.ext-counter { font-size: 14px; line-height: 20px; margin: 0; }
.ext-preview { display: flex; align-items: center; gap: 16px; }
.ext-preview img { width: 96px; height: 96px; object-fit: cover; border-radius: var(--radius); border: 1px solid var(--color-divider-light); background: var(--color-white); }

/* EXTENSION: Error state */
.ext-has-error .efi-input { border: 2px solid var(--ext-error); box-shadow: none; padding-left: 11px; }
.ext-has-error .efi-input:focus { border-color: var(--ext-error); box-shadow: 0 0 0 1px var(--ext-error); }
.ext-error-msg { display: flex; align-items: flex-start; gap: 8px; margin: 0; color: var(--ext-error); font-weight: 600; font-size: 14px; line-height: 20px; }
.ext-error-msg svg { flex: none; margin-top: 0; }
.ext-error-summary {
  margin-bottom: 32px;
  padding: 24px;
  border: 2px solid var(--ext-error);
  border-radius: var(--radius);
  background: var(--color-white);
  color: var(--color-navy);
}
.ext-error-summary:focus { outline: 2px solid var(--color-navy); outline-offset: 2px; }
.ext-error-summary ul { margin: 12px 0 0; padding-left: 20px; }
.ext-error-summary a { color: var(--ext-error); font-weight: 600; }
.ext-form-alert { margin: 0; color: var(--ext-error); font-weight: 600; }

/* EXTENSION: FormMessage (success) */
.ext-form-message {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: var(--measure);
  padding: 32px;
  border: 1px solid var(--color-divider-light);
  border-radius: var(--radius);
  background: var(--ext-sky);
  color: var(--color-navy);
}
.ext-ground-sky .ext-form-message { background: var(--color-mint); }

/* EXTENSION: Repeater */
.ext-repeater { display: flex; flex-direction: column; gap: 16px; }
.ext-repeater__item {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px;
  border: 1px solid var(--color-divider-light);
  border-radius: var(--radius);
  background: var(--color-white);
}
.ext-repeater__head { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.ext-repeater__head h3 { margin: 0; font-size: 16px; line-height: 24px; font-weight: 600; }
.ext-textbtn {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--color-forest);
  font: 600 16px/24px var(--font-sans);
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}
.ext-textbtn:hover { text-decoration-thickness: 2px; }
@media (max-width: 767px) { .ext-textbtn { min-height: 44px; } }

/* Forms: layout */
.form { display: flex; flex-direction: column; gap: 24px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.form-grid > .span-2 { grid-column: 1 / -1; }
@media (max-width: 767px) { .form-grid { grid-template-columns: minmax(0, 1fr); } }
.form-wrap { max-width: 960px; }
.form-col { max-width: var(--measure); }
.consent { display: flex; flex-direction: column; gap: 16px; padding-top: 8px; }
.form-section { border: 0; margin: 0; padding: 0 0 40px; min-width: 0; display: flex; flex-direction: column; gap: 20px; border-bottom: 1px solid var(--color-divider-light); }
.form-section:last-of-type { border-bottom: 0; }
.form-section > legend { padding: 0; margin-bottom: 4px; font-family: var(--font-serif); font-weight: 600; letter-spacing: -0.5px; font-size: 24px; line-height: 30px; }
.form-row-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 767px) { .form-row-3 { grid-template-columns: minmax(0, 1fr); } }
.honeypot { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; border: 0; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }

/* Speaker registration layout */
.reg-layout { display: grid; grid-template-columns: 220px minmax(0, var(--measure)); gap: 64px; align-items: start; }
@media (max-width: 1023px) { .reg-layout { grid-template-columns: minmax(0, 1fr); } .ext-progress { display: none; } }
.ext-progress { position: sticky; top: 112px; }
.ext-progress ol { list-style: none; margin: 12px 0 0; padding: 0; display: flex; flex-direction: column; gap: 4px; border-left: 1px solid var(--color-divider-light); }
.ext-progress a { display: flex; justify-content: space-between; gap: 8px; padding: 6px 12px; margin-left: -1px; border-left: 2px solid transparent; color: var(--color-navy); text-decoration: none; font-size: 14px; line-height: 20px; font-weight: 600; }
.ext-progress a:hover { border-left-color: var(--color-navy); }
.ext-progress [data-complete="true"] .ext-progress__state { display: inline-flex; }
.ext-progress__state { display: none; color: var(--color-forest); }
.session-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }

/* Login */
.login-card {
  max-width: 480px;
  margin-inline: auto;
  padding: 32px;
  background: var(--color-white);
  border: 1px solid var(--color-divider-light);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* EXTENSION: Footer */
.efi-footer { padding: 64px 0 32px; }
.efi-footer__grid { display: grid; grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr)); gap: 32px; }
@media (max-width: 1023px) { .efi-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 599px)  { .efi-footer__grid { grid-template-columns: minmax(0, 1fr); } }
.efi-footer__brand { display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }
.efi-footer__brand img { display: block; height: 52px; width: auto; }
.efi-footer address { font-style: normal; color: var(--color-mint); font-size: 14px; line-height: 20px; }
.efi-footer__heading { margin: 0 0 12px; font-size: 13px; line-height: 16px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; color: var(--color-series-on-navy); }
.efi-footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.efi-footer a { color: var(--color-white); text-decoration: underline; text-underline-offset: 3px; font-size: 14px; line-height: 24px; }
.efi-footer a:hover { color: var(--color-mint); text-decoration-thickness: 2px; }
.efi-footer__bottom { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--color-divider-dark); color: var(--color-mint); font-size: 14px; line-height: 20px; }
@media (max-width: 767px) { .efi-footer a { display: inline-flex; align-items: center; min-height: 44px; } .efi-footer ul { gap: 0; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  .ext-tile:hover { transform: none; }
}