@font-face {
  font-family: 'General Sans';
  src: url('../assets/fonts/general-sans-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'General Sans';
  src: url('../assets/fonts/general-sans-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'General Sans';
  src: url('../assets/fonts/general-sans-600.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'General Sans';
  src: url('../assets/fonts/general-sans-700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --color-purple: #372877;
  --color-green: #3e8606;
  --color-blue: #4d73aa;
  --color-blue-tint: rgba(172, 200, 229, 0.35);
  --color-blue-tint-hover: rgba(172, 200, 229, 0.55);
  --color-lime: #cce24c;
  --color-white: #ffffff;

  --font-body: 'General Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --content-max: 402px;
  --radius-row: 13px;

  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--color-white);
  color: var(--color-purple);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-blue);
}

a:not(:hover) {
  text-decoration-color: currentColor;
}

.page {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 32px 21px 0;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* ---------- Hero ---------- */

.hero {
  display: grid;
  grid-template-columns: 89px 1fr;
  column-gap: 20px;
  row-gap: 16px;
  align-items: center;
}

.hero__logo {
  grid-column: 1;
  grid-row: 1;
  width: 89px;
  height: 89px;
  flex-shrink: 0;
}

.hero__title {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  color: var(--color-green);
  font-size: 26px;
  line-height: 1.25;
  font-weight: 700;
}

.hero__copy {
  grid-column: 1 / -1;
  grid-row: 2;
}

.hero__copy p {
  margin: 0 0 16px;
}

.hero__copy p:last-child {
  margin-bottom: 0;
}

.hero__lead-desktop {
  display: none;
}

/* ---------- Accordion ---------- */

.accordion {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.accordion-heading {
  margin: 0;
}

.accordion-item {
  border-radius: var(--radius-row);
  background: var(--color-blue-tint);
  overflow: hidden;
}

.accordion-item--alert {
  background: var(--color-purple);
}

.accordion-item--complete {
  background: var(--color-green);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 15px 19px;
  font: inherit;
  color: inherit;
  text-align: left;
  min-height: 61px;
}

.accordion-trigger:hover {
  background: rgba(255, 255, 255, 0.2);
}

.accordion-item--alert .accordion-trigger:hover {
  background: rgba(255, 255, 255, 0.06);
}

.accordion-trigger:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: -2px;
}

.accordion-trigger__label {
  flex: 1;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-purple);
}

.accordion-item--alert .accordion-trigger__label {
  color: var(--color-lime);
}

.accordion-item--complete .accordion-trigger__label {
  color: var(--color-white);
}

.accordion-trigger__icon {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1.5px solid var(--color-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.accordion-trigger__icon::before,
.accordion-trigger__icon::after {
  content: '';
  position: absolute;
  background: var(--color-blue);
  border-radius: 1px;
}

/* horizontal bar of the +/- glyph */
.accordion-trigger__icon::before {
  width: 12px;
  height: 2px;
}

/* vertical bar of the + glyph, hidden when expanded to leave a minus */
.accordion-trigger__icon::after {
  width: 2px;
  height: 12px;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.accordion-trigger[aria-expanded='true'] .accordion-trigger__icon::after {
  transform: rotate(90deg);
  opacity: 0;
}

.accordion-trigger__icon--warning {
  border: 0;
}

.accordion-trigger__icon--warning::before,
.accordion-trigger__icon--warning::after {
  content: none;
}

.accordion-trigger__icon--warning img {
  width: 24px;
  height: 22px;
}

.accordion-trigger__icon--warning-desktop {
  display: none;
}

.accordion-trigger__icon__check {
  display: none;
  width: 34px;
  height: 34px;
}

.accordion-item--complete .accordion-trigger__icon {
  border: none;
}

.accordion-item--complete .accordion-trigger__icon::before,
.accordion-item--complete .accordion-trigger__icon::after {
  content: none;
}

.accordion-item--complete .accordion-trigger__icon__check {
  display: block;
}

.accordion-trigger__icon--help-expand {
  display: none;
}

.accordion-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.25s ease;
}

.accordion-panel[data-open='true'] {
  grid-template-rows: 1fr;
}

.accordion-panel__inner {
  overflow: hidden;
}

.checklist {
  list-style: none;
  margin: 0;
  padding: 0 19px 20px 26px;
  display: flex;
  flex-direction: column;
  gap: 17px;
}

.checklist li label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  color: var(--color-blue);
  font-size: 16px;
  line-height: 1.5;
}

.checklist li label strong {
  color: var(--color-blue);
  font-weight: 600;
}

.checklist--alert li label,
.checklist--alert li label strong {
  color: var(--color-white);
}

.checklist input[type='checkbox'] {
  appearance: none;
  -webkit-appearance: none;
  flex-shrink: 0;
  width: 19px;
  height: 19px;
  margin-top: 3px;
  border: 2px solid var(--color-blue);
  border-radius: 3px;
  background: transparent;
  cursor: pointer;
  position: relative;
}

.checklist--alert input[type='checkbox'] {
  border-color: var(--color-white);
}

.checklist input[type='checkbox']:checked {
  border-color: var(--color-green);
  background: var(--color-green);
}

.checklist input[type='checkbox']:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: -0.6px;
  width: 5px;
  height: 10px;
  border: solid var(--color-white);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checklist input[type='checkbox']:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

.checklist input[type='checkbox']:checked ~ span strong,
.checklist input[type='checkbox']:checked ~ span {
  color: var(--color-green);
}

.checklist--alert input[type='checkbox']:checked ~ span strong,
.checklist--alert input[type='checkbox']:checked ~ span {
  color: var(--color-lime);
}

.accordion-item--complete .checklist li label,
.accordion-item--complete .checklist li label strong,
.accordion-item--complete .checklist input[type='checkbox']:checked ~ span,
.accordion-item--complete .checklist input[type='checkbox']:checked ~ span strong {
  color: var(--color-white);
}

.accordion-item--complete .checklist input[type='checkbox'] {
  border-color: var(--color-white);
}

.accordion-item--complete .checklist input[type='checkbox']:checked {
  border-color: var(--color-white);
  background: var(--color-white);
}

.accordion-item--complete .checklist input[type='checkbox']:checked::after {
  border-color: var(--color-green);
}

/* ---------- Disclaimer & footer ---------- */

.disclaimer {
  font-size: 14px;
  line-height: 1.3;
  color: var(--color-purple);
  margin: 0;
}

/* ---------- Install CTA (mobile only) ---------- */

.install-cta {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-purple);
  margin: 0;
}

/* `display: flex` above would otherwise beat the UA `[hidden] { display: none }`,
   leaving the CTA visible even with the hidden attribute set. */
.install-cta[hidden] {
  display: none;
}

.install-cta__icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.install-cta__trigger {
  border: 0;
  margin: 0;
  padding: 0;
  background: transparent;
  font: inherit;
  color: var(--color-green);
  text-decoration: underline;
  cursor: pointer;
}

.install-cta__trigger:hover {
  text-decoration-thickness: 2px;
}

.install-cta__trigger:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

/* ---------- Reset list ---------- */

.reset-list {
  margin: 0 0 8px;
}

.reset-list__trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 0;
  margin: 0;
  padding: 0;
  background: transparent;
  font: inherit;
  font-weight: 600;
  color: var(--color-blue);
  cursor: pointer;
}

.reset-list__icon {
  flex-shrink: 0;
}

.reset-list__trigger span {
  text-decoration: underline;
}

.reset-list__trigger:hover span {
  text-decoration-thickness: 2px;
}

.reset-list__trigger:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

/* ---------- Install instructions modal (iOS) ---------- */

.install-modal__backdrop {
  position: fixed;
  inset: 0;
  background: rgba(55, 40, 119, 0.53);
}

.install-modal__card {
  position: fixed;
  z-index: 1;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: calc(100vw - 42px);
  max-width: 359px;
  max-height: calc(100vh - 42px);
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border-radius: var(--radius-row);
  padding: 32px 22px 28px;
}

.install-modal__body {
  overflow-y: auto;
  min-height: 0;
}

.install-modal__close {
  position: absolute;
  top: -17px;
  right: -17px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1.5px solid var(--color-blue);
  background: var(--color-white);
  cursor: pointer;
  padding: 0;
  transform: rotate(45deg);
}

.install-modal__close span::before,
.install-modal__close span::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--color-blue);
  border-radius: 1px;
  transform: translate(-50%, -50%);
}

.install-modal__close span::before {
  width: 12px;
  height: 2px;
}

.install-modal__close span::after {
  width: 2px;
  height: 12px;
}

.install-modal__close:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

.install-modal__title {
  margin: 0 0 20px;
  color: var(--color-purple);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  text-align: center;
}

.install-modal__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.install-modal__steps li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--color-purple);
  font-size: 16px;
  line-height: 1.5;
}

.install-modal__steps img {
  flex-shrink: 0;
}

.install-modal__icon-preview {
  border-radius: 10px;
  box-shadow: 0 0 5.2px 0 rgba(0, 0, 0, 0.31);
}

.brand-footer {
  width: 100vw;
  margin: 8px calc(50% - 50vw) 0;
  padding: 16px 21px;
  background: var(--color-green);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 16px;
  font-size: 16px;
  font-weight: 500;
}

.brand-footer__logo {
  height: 54px;
  width: auto;
}

/* ---------- Desktop / wide layout ---------- */

@media (min-width: 900px) {
  :root {
    --content-max: 1200px;
  }

  .page {
    display: grid;
    grid-template-columns: minmax(0, 640px) minmax(0, 1fr);
    column-gap: 48px;
    padding: 64px 40px 0;
    gap: 48px;
  }

  .hero {
    grid-column: 1;
    grid-row: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__logo {
    width: 115px;
    height: 115px;
    margin-bottom: 24px;
  }

  .hero__title {
    font-size: 32px;
    margin-bottom: 16px;
  }

  .hero__lead-desktop {
    display: block;
    font-size: 28px;
    line-height: 1.15;
    font-weight: 700;
    color: var(--color-purple);
    margin-bottom: 16px;
  }

  .hero__copy p {
    font-size: 20px;
    line-height: 1.5;
  }

  main {
    grid-column: 2;
    grid-row: 1;
    margin-top: 227px;
  }

  .disclaimer {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .install-cta {
    display: none;
  }

  .brand-footer {
    grid-column: 1 / -1;
    grid-row: 3;
    margin-top: 0;
    padding: 16px 40px;
  }

  .accordion-trigger__label {
    font-size: 18px;
  }

  .accordion-item--alert {
    background: var(--color-blue-tint);
  }

  .accordion-item--alert .accordion-trigger:hover {
    background: rgba(255, 255, 255, 0.2);
  }

  .accordion-item--alert .accordion-trigger__label {
    color: var(--color-purple);
  }

  .accordion-item--alert .accordion-trigger__icon--warning {
    order: -1;
  }

  .accordion-trigger__icon--warning-mobile {
    display: none;
  }

  .accordion-trigger__icon--warning-desktop {
    display: block;
  }

  .accordion-trigger__icon--help-expand {
    display: flex;
  }

  .checklist--alert li label,
  .checklist--alert li label strong {
    color: var(--color-blue);
  }

  .checklist--alert input[type='checkbox'] {
    border-color: var(--color-blue);
  }

  .checklist--alert input[type='checkbox']:checked ~ span strong,
  .checklist--alert input[type='checkbox']:checked ~ span {
    color: var(--color-green);
  }
}

@media (min-width: 1400px) {
  .page {
    grid-template-columns: minmax(0, 636px) minmax(0, 1fr);
  }
}