/*-- -------------------------- -->
<---     Install App — page CSS  -->
<--- -------------------------- -*/

/* Page-local tokens. These build on the global :root variables
   (--primary, --headerColor, etc.) so nothing here is duplicated. */
#hero-app,
#app-body {
  --appMaxWidth: 46rem;
  --appBorder: #e7e5ec;
  --appSurface: #f7f6f9;
  --appSurfaceMuted: #f1eff4;
}

/*-- -------------------------- -->
<---            Hero            -->
<--- -------------------------- -*/

/* Mobile - 360px */
@media only screen and (min-width: 0rem) {
  #hero-app {
    padding: clamp(7rem, 12vw, 10rem) 1rem clamp(3rem, 6vw, 4.5rem);
    position: relative;
    z-index: 1;
    background: linear-gradient(180deg, var(--appSurface) 0%, #fff 100%);
    border-bottom: 1px solid var(--appBorder);
  }
  #hero-app:before {
    content: '';
    width: 100%;
    height: 100%;
    background: var(--primary);
    opacity: 0.04;
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    pointer-events: none;
  }
  #hero-app .cs-container {
    width: 100%;
    max-width: var(--appMaxWidth);
    margin: auto;
  }
  #hero-app .cs-content {
    text-align: left;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }
  #hero-app .cs-title {
    font-size: clamp(2rem, 6vw, 3.25rem);
    max-width: 24ch;
    margin-bottom: 1.25rem;
  }
  #hero-app .cs-text {
    margin-bottom: 2rem;
  }
  #hero-app .cs-button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
  }
  #hero-app .cs-button-solid {
    font-size: 1rem;
    font-weight: 700;
    line-height: clamp(2.875rem, 5.5vw, 3.25rem);
    text-align: center;
    text-decoration: none;
    min-width: 13rem;
    margin: 0;
    box-sizing: border-box;
    padding: 0 1.5rem;
    background-color: var(--primary);
    color: #fff;
    border-radius: 0.375rem;
    display: inline-block;
    position: relative;
    z-index: 1;
    overflow: hidden;
  }
  #hero-app .cs-button-solid:before {
    content: "";
    width: 0%;
    height: 100%;
    background: #000;
    opacity: 1;
    border-radius: 0.375rem;
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    transition: width 0.3s;
  }
  #hero-app .cs-button-solid:hover:before {
    width: 100%;
  }
  #hero-app .cs-button-transparent {
    font-size: 1rem;
    font-weight: 700;
    line-height: clamp(2.875rem, 5.5vw, 3.25rem);
    text-decoration: none;
    color: var(--headerColor);
    padding: 0 0.25rem;
    display: inline-block;
    border-bottom: 2px solid transparent;
    transition: border-color 0.3s, color 0.3s;
  }
  #hero-app .cs-button-transparent:hover {
    color: var(--primary);
    border-bottom-color: var(--primary);
  }
}

/*-- -------------------------- -->
<---        Article Body        -->
<--- -------------------------- -*/

/* Mobile - 360px */
@media only screen and (min-width: 0rem) {
  #app-body {
    padding: clamp(3rem, 7vw, 4.5rem) 1rem clamp(4rem, 9vw, 6.25rem);
    position: relative;
    z-index: 1;
  }
  #app-body .cs-container {
    width: 100%;
    max-width: var(--appMaxWidth);
    margin: auto;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
  }

  /* ---- Table of contents (jump nav) ---- */
  #app-body .app-toc {
    background: var(--appSurface);
    border: 1px solid var(--appBorder);
    border-radius: 0.75rem;
    padding: 1.25rem 1.5rem;
    scroll-margin-top: 6rem;
  }
  #app-body .app-toc__label {
    display: block;
    font-size: var(--topperFontSize);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.75rem;
  }
  #app-body .app-toc__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.5rem 1.5rem;
  }
  #app-body .app-toc__list a {
    color: var(--bodyTextColor);
    text-decoration: none;
    font-size: 0.9375rem;
    line-height: 1.4;
    border-bottom: 1px solid transparent;
    transition: color 0.2s, border-color 0.2s;
  }
  #app-body .app-toc__list a:hover {
    color: var(--primary);
    border-bottom-color: var(--primary);
  }

  /* ---- Prose column ---- */
  #app-body .app-prose {
    color: var(--bodyTextColor);
    font-size: 1.0625rem;
    line-height: 1.7;
  }
  #app-body .app-prose > * {
    max-width: 100%;
  }

  #app-body h2 {
    color: var(--headerColor);
    scroll-margin-top: 6rem;
    font-size: clamp(1.5rem, 3.4vw, 2rem);
    font-weight: 800;
    line-height: 1.25;
    margin: 3rem 0 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--appBorder);
  }
  #app-body h2:first-of-type {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
  }
  #app-body p {
    margin: 0 0 1.25rem;
  }
  #app-body a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid currentColor;
    transition: opacity 0.2s;
  }
  #app-body a:hover {
    opacity: 0.7;
  }
  #app-body strong {
    color: var(--headerColor);
  }

  /* ---- Steps ---- */
  #app-body .app-steps {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }
  #app-body .app-step {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    margin: 0;
  }
  #app-body .app-step__num {
    flex: none;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    font-size: 1.0625rem;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  #app-body .app-step__body {
    padding-top: 0.375rem;
  }
  #app-body .app-step__body p {
    margin: 0;
  }

  /* ---- Callouts ---- */
  #app-body .app-callout {
    border-radius: 0.75rem;
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
    border-left: 4px solid var(--primary);
    background: var(--appSurface);
  }
  #app-body .app-callout p:last-child {
    margin-bottom: 0;
  }
  #app-body .app-callout--info {
    border-left-color: var(--primary);
  }
  #app-body .app-callout--success {
    border-left-color: #2e9e5b;
    background: #eef7f1;
  }
  #app-body .app-callout--muted {
    border-left-color: #b8b5c2;
    background: var(--appSurfaceMuted);
  }

  /* ---- FAQ ---- */
  #app-body .app-faq {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin: 1.5rem 0;
  }
  #app-body .app-faq__item {
    border: 1px solid var(--appBorder);
    border-radius: 0.75rem;
    background: #fff;
    overflow: hidden;
  }
  #app-body .app-faq__item summary {
    cursor: pointer;
    padding: 1rem 1.25rem;
    font-weight: 700;
    color: var(--headerColor);
    list-style: none;
    position: relative;
    padding-right: 3rem;
  }
  #app-body .app-faq__item summary::-webkit-details-marker {
    display: none;
  }
  #app-body .app-faq__item summary:after {
    content: '+';
    position: absolute;
    right: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--primary);
    transition: transform 0.2s;
  }
  #app-body .app-faq__item[open] summary:after {
    content: '\2212'; /* minus */
  }
  #app-body .app-faq__item p {
    padding: 0 1.25rem 1.25rem;
    margin: 0;
  }

  /* ---- Final CTA ---- */
  #app-body .app-cta {
    text-align: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primaryLight) 100%);
    border-radius: 1rem;
    padding: 2.5rem 1.5rem;
    margin-top: 1rem;
    color: #fff;
  }
  #app-body .app-cta h2 {
    color: #fff;
    border: none;
    padding: 0;
    margin: 0 0 0.5rem;
  }
  #app-body .app-cta p {
    color: #fff;
    opacity: 0.95;
    margin-bottom: 1.5rem;
  }
  #app-body .app-cta .cs-button-solid {
    font-size: 1rem;
    font-weight: 700;
    line-height: 3.25rem;
    text-decoration: none;
    min-width: 13rem;
    padding: 0 1.5rem;
    background-color: #fff;
    color: var(--headerColor);
    border-radius: 0.375rem;
    display: inline-block;
    transition: transform 0.2s;
  }
  #app-body .app-cta .cs-button-solid:hover {
    transform: translateY(-2px);
  }
}

/* Tablet - 768px */
@media only screen and (min-width: 48rem) {
  #app-body .app-toc__list {
    grid-template-columns: 1fr 1fr;
  }
}

/*-- -------------------------- -->
<---          Dark Mode         -->
<--- -------------------------- -*/
@media only screen and (min-width: 0rem) {
  body.dark-mode #hero-app {
    background: linear-gradient(180deg, #16151a 0%, #0e0d11 100%);
    border-bottom-color: #2a2830;
  }
  body.dark-mode #hero-app .cs-title {
    color: var(--bodyTextColorWhite);
  }
  body.dark-mode #hero-app .cs-text {
    color: var(--bodyTextColorWhite);
    opacity: 0.85;
  }
  body.dark-mode #hero-app .cs-button-transparent {
    color: var(--bodyTextColorWhite);
  }

  body.dark-mode #app-body {
    --appBorder: #2a2830;
    --appSurface: #16151a;
    --appSurfaceMuted: #1d1c22;
  }
  body.dark-mode #app-body .app-prose,
  body.dark-mode #app-body .app-toc__list a,
  body.dark-mode #app-body p,
  body.dark-mode #app-body li {
    color: var(--bodyTextColorWhite);
    opacity: 0.85;
  }
  body.dark-mode #app-body h2,
  body.dark-mode #app-body strong,
  body.dark-mode #app-body .app-faq__item summary {
    color: var(--bodyTextColorWhite);
    opacity: 1;
  }
  body.dark-mode #app-body .app-faq__item {
    background: var(--appSurface);
  }
  body.dark-mode #app-body .app-callout--success {
    background: #12241a;
  }
  body.dark-mode #app-body .app-cta h2,
  body.dark-mode #app-body .app-cta p {
    color: #fff;
    opacity: 1;
  }
  body.dark-mode #app-body .app-cta .cs-button-solid {
    color: var(--headerColor);
  }
}