/* ==========================================================================
   Public pages: landing, log in, sign up and onboarding.

   The same workbench as the study pages — white canvas, white paper for
   forms and lists, black ink, one royal-blue action — so that signing in
   feels like opening the product rather than leaving an advert.
   ========================================================================== */

.public-app { background: var(--canvas); min-height: 100vh; }
/* The header is a white pill floating over the page. It stays at the top
   while you scroll and gains a slightly deeper shadow once the page moves
   under it (.is-scrolled, set in public-pages.js). */
.public-header-hold { position: sticky; top: 0; z-index: 30; padding: 14px 24px 0; }
.public-header { display: flex; align-items: center; gap: 20px; max-width: 1080px; height: 60px; margin: 0 auto; padding: 0 10px 0 20px; background: var(--paper); border-radius: var(--radius-pill); box-shadow: 0 0 0 1px rgba(20, 40, 90, .06), 0 8px 24px -10px rgba(20, 40, 90, .18); transition: box-shadow var(--dur-control) var(--ease-out); animation: public-drop .5s var(--ease-out) both; }
.public-header.is-scrolled { box-shadow: 0 0 0 1px rgba(20, 40, 90, .07), 0 14px 32px -10px rgba(20, 40, 90, .26); }
.public-brand { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; letter-spacing: -.03em; }
.public-brand:hover { text-decoration: none; }
.public-brand img { width: 28px; height: 28px; }
.public-nav { flex: 1; display: flex; justify-content: center; gap: 30px; font-size: .9rem; }
.public-nav a, .public-header-login { color: var(--ink); font-weight: 500; transition: color var(--dur-press) var(--ease-out); }
.public-nav a:hover, .public-header-login:hover { color: var(--accent); text-decoration: none; }
.public-header-actions { display: flex; align-items: center; gap: 18px; font-size: .9rem; }
.public-header-cta { padding: 10px 20px; border-radius: var(--radius-pill); background: var(--cta); color: var(--cta-ink); font-weight: 600; box-shadow: var(--cta-shadow); transition: background-color var(--dur-press) var(--ease-out), transform var(--dur-press) var(--ease-out); }
.public-header-cta:hover { text-decoration: none; background: var(--cta-hover); transform: translateY(-1px); }
.public-header-cta:active { transform: translateY(0); }
.public-header-cta .cta-short { display: none; }
.public-footer { max-width: 1120px; margin: 0 auto; display: flex; justify-content: space-between; gap: 20px; padding: 24px; color: var(--faint); font-size: .75rem; border-top: 1px solid var(--hairline); }

/* Landing ------------------------------------------------------------------ */

.public-landing { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.landing-hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 56px; align-items: center; padding: 56px 0 64px; }
.landing-hero h1 { font-size: clamp(2.4rem, 4.6vw, 3.9rem); line-height: 1.02; letter-spacing: -.045em; max-width: 15ch; margin-bottom: 20px; }
.landing-hero-copy > p { max-width: 54ch; color: var(--muted); font-size: 1rem; line-height: 1.7; }
.landing-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.landing-hero-copy .landing-note { margin-top: 22px; font-size: .8125rem; color: var(--faint); }

/* Landing motion. The hero introduces itself once, a line at a time; later
   sections rise into place as they scroll into view; rows and pictures
   answer the pointer with small moves. Nothing loops, and the reduced-motion
   rule at the end of this file switches all of it off. */
.landing-hero-copy > * { animation: public-rise .6s var(--ease-out) both; }
.landing-hero-copy > :nth-child(1) { animation-delay: 120ms; }
.landing-hero-copy > :nth-child(2) { animation-delay: 200ms; }
.landing-hero-copy > :nth-child(3) { animation-delay: 280ms; }
.landing-hero-copy > :nth-child(4) { animation-delay: 360ms; }
.landing-hero-art { animation: public-settle .8s var(--ease-out) 260ms both; }
.js-reveal [data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .6s var(--ease-out), transform .6s var(--ease-out); transition-delay: var(--reveal-delay, 0ms); }
.js-reveal [data-reveal].is-visible { opacity: 1; transform: none; }
.landing-subject-art .emblem { transition: transform var(--dur-control) var(--ease-out); }
.landing-subject:hover .landing-subject-art .emblem { transform: scale(1.05) rotate(-2deg); }
.landing-subject-arrow { transition: transform var(--dur-control) var(--ease-out), color var(--dur-control) var(--ease-out); }
.landing-subject:hover .landing-subject-arrow { transform: translateX(4px); color: var(--accent); }
.landing-method-art { transition: transform var(--dur-control) var(--ease-out); }
.landing-method-grid > div:hover .landing-method-art { transform: translateY(-4px); }
#how-it-works { scroll-margin-top: 96px; }

/* The hero picture is a set of outlined study objects floating on the page,
   one per subject colour. It has no frame of its own: the objects sit on
   the canvas beside the headline. The file is AI-generated (Higgsfield,
   Recraft V4.1) and keeps its Content Credentials metadata. */
.landing-hero-art { min-width: 0; }
.landing-hero-art img { display: block; width: 100%; height: auto; }

.landing-subjects, .landing-method { padding: 48px 0; border-top: 1px solid var(--hairline); }
.landing-subjects h2, .landing-method h2 { font-size: clamp(1.5rem, 2.4vw, 2rem); letter-spacing: -.03em; margin-bottom: 20px; }
.landing-subject-list { background: var(--paper); border: 1px solid var(--hairline); border-radius: var(--radius-lg); overflow: hidden; }
.landing-subject { display: grid; grid-template-columns: 96px minmax(0, 1fr) auto; align-items: center; gap: 24px; padding: 18px 24px; color: var(--text); }
.landing-subject + .landing-subject { border-top: 1px solid var(--hairline-soft); }
.landing-subject:hover { background: var(--accent-tint); text-decoration: none; }
.landing-subject-art .emblem { width: 96px; }
.landing-subject-body { display: grid; gap: 4px; min-width: 0; }
.landing-subject-body strong { font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; color: var(--ink); letter-spacing: -.02em; }
.landing-subject-body > span { color: var(--muted); font-size: .9rem; line-height: 1.6; max-width: 62ch; }
.landing-subject-body > .landing-subject-meta { font-family: var(--font-mono); font-size: .75rem; color: var(--faint); }
.landing-subject-arrow { font-size: 1.2rem; color: var(--ink); }

.landing-method-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 2px solid var(--ink); }
.landing-method-grid > div { padding: 18px 24px 4px 0; }
.landing-method-grid > div + div { padding-left: 24px; border-left: 1px solid var(--hairline); }
.landing-method-grid h3 { font-size: 1.1rem; margin-bottom: 8px; }
.landing-method-grid p { color: var(--muted); font-size: .9rem; line-height: 1.65; }
.landing-method-grid .landing-status { font-size: .8125rem; font-weight: 600; color: var(--ink); }
.landing-method-art { display: block; width: auto; height: 72px; margin-bottom: 12px; }

/* Log in and sign up ------------------------------------------------------- */

.public-auth-shell { min-height: calc(100vh - 74px); margin-top: 14px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(420px, .9fr); border-top: 1px solid var(--hairline); }
.public-auth-art { display: flex; flex-direction: column; gap: 40px; padding: 40px clamp(28px, 6vw, 90px); background: var(--canvas); }
.auth-art-emblems { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; max-width: 420px; margin-top: auto; }
.auth-art-points { list-style: none; margin: 0 0 auto; padding: 0; max-width: 420px; border-top: 2px solid var(--ink); }
.auth-art-points li { padding: 12px 0; border-bottom: 1px solid var(--hairline); color: var(--ink); font-size: .9375rem; }
.public-auth-form { display: flex; align-items: center; justify-content: center; padding: 40px clamp(24px, 5vw, 80px); background: var(--paper); border-left: 1px solid var(--hairline); }
.public-form-inner { width: min(400px, 100%); }
.public-mobile-brand { display: none; }
.public-page-heading { margin-bottom: 24px; }
.public-page-heading h1 { font-size: 2rem; letter-spacing: -.04em; margin-bottom: 8px; }
.public-page-heading p:not(.eyebrow) { color: var(--muted); font-size: .9rem; line-height: 1.65; }
.public-auth-form form { display: grid; gap: 14px; }
.public-auth-form label, .onboarding-form label { display: grid; gap: 6px; font-size: .8125rem; font-weight: 600; color: var(--ink); }
.public-auth-form input, .onboarding-form input, .onboarding-form select { width: 100%; padding: 11px 12px; font-size: .9rem; }
.public-submit { width: 100%; margin-top: 6px; }
.public-providers { display: grid; gap: 8px; margin-bottom: 16px; }
.public-provider { min-height: 44px; display: flex; align-items: center; justify-content: center; gap: 10px; background: var(--paper); border: 1px solid var(--hairline); border-radius: var(--radius-sm); color: var(--ink); font-size: .875rem; font-weight: 500; }
.public-provider:hover { border-color: var(--ink); }
.provider-google { color: #4285f4; font-size: 1.05rem; font-weight: 800; }
.provider-apple { color: #111; font-size: .85rem; }
.public-or { display: flex; align-items: center; gap: 12px; margin: 14px 0; color: var(--faint); font-size: .75rem; }
.public-or::before, .public-or::after { content: ''; flex: 1; height: 1px; background: var(--hairline); }
.public-form-links { display: flex; justify-content: space-between; gap: 15px; margin-top: 20px; font-size: .8125rem; }
.public-form-links button { padding: 0; border: 0; background: none; color: var(--accent); font-size: inherit; }
.public-error { min-height: 1.4em; margin: 12px 0 0; color: var(--danger); font-size: .8125rem; }
.public-auth-form .public-error { text-align: center; }

/* Onboarding --------------------------------------------------------------- */

.onboarding-shell { width: min(720px, calc(100% - 40px)); min-height: calc(100vh - 74px); margin: 0 auto; padding: 32px 0 64px; }
.onboarding-top { display: flex; align-items: center; justify-content: space-between; gap: 30px; margin-bottom: 40px; }
.onboarding-progress { display: flex; gap: 4px; }
.onboarding-progress span { width: 32px; height: 4px; background: var(--hairline); }
.onboarding-progress span.is-done { background: var(--accent); }
.onboarding-form { padding: 32px clamp(20px, 5vw, 40px); background: var(--paper); border: 1px solid var(--hairline); border-radius: var(--radius-lg); animation: public-rise .3s var(--ease) both; }
/* Each step opens with its picture. Pictures share one height and keep their
   own width, so the wide subjects picture is not squeezed into a square. */
.onboarding-step-visual { margin-bottom: 18px; }
.onboarding-step-visual img { display: block; width: auto; height: 88px; max-width: 100%; }
.onboarding-form .public-page-heading { max-width: 560px; }
.onboarding-form .public-page-heading h1 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); }
.onboarding-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.onboarding-search { margin-top: 22px; }
.university-options { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; max-width: 520px; margin-top: 12px; }
.university-option { position: relative; display: flex !important; flex-direction: column; align-items: center; justify-content: center; gap: 10px; min-height: 160px; padding: 16px 12px; text-align: center; border: 1px solid var(--hairline); border-radius: var(--radius-sm); background: var(--paper); cursor: pointer; transition: border-color .15s; }
.university-option:hover { border-color: var(--ink); }
.university-option:has(input:checked) { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); background: var(--accent-tint); }
.university-option:focus-within { outline: 3px solid var(--accent); outline-offset: 3px; }
.university-option input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.university-logo { display: grid; place-items: center; width: 68px; height: 68px; border-radius: var(--radius-lg); background: #0c2d5c; }
.university-logo img { width: 48px; height: 48px; }
.university-option > span:last-child { display: grid; gap: 3px; }
.university-option strong { font-size: .875rem; color: var(--ink); }
.university-option small { color: var(--muted); font-size: .72rem; line-height: 1.35; }
.onboarding-principles { display: grid; margin-top: 24px; border-top: 2px solid var(--ink); }
.onboarding-principles p { display: grid; grid-template-columns: 150px 1fr; gap: 15px; margin: 0; padding: 14px 0; border-bottom: 1px solid var(--hairline-soft); font-size: .875rem; }
.onboarding-principles span { color: var(--muted); }
.onboarding-subject-grid, .onboarding-discovery-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; border: 0; padding: 0; margin: 24px 0 0; }
.onboarding-choice { position: relative; display: flex !important; align-items: center; gap: 10px; min-height: 56px; padding: 12px 14px; border: 1px solid var(--hairline); border-radius: var(--radius-sm); background: var(--paper); cursor: pointer; }
.onboarding-choice:hover { border-color: var(--ink); }
.onboarding-choice:has(input:checked) { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); background: var(--accent-tint); }
.onboarding-choice input { width: 17px; height: 17px; accent-color: var(--accent); }
.onboarding-choice-mark { display: none; }
.onboarding-choice span:last-child { display: grid; gap: 2px; }
.onboarding-choice strong { font-size: .875rem; color: var(--ink); }
.onboarding-choice small { color: var(--muted); font-size: .72rem; }
.onboarding-choice.compact { min-height: 48px; }
.onboarding-consent { display: flex !important; align-items: flex-start; gap: 12px; margin-top: 28px; padding: 16px; border: 1px solid var(--hairline); border-radius: var(--radius-sm); background: var(--surface); cursor: pointer; }
.onboarding-consent input { width: 18px; height: 18px; accent-color: var(--accent); }
.onboarding-consent span { display: grid; gap: 4px; }
.onboarding-consent small { color: var(--muted); font-size: .75rem; font-weight: 400; }
.onboarding-fine-print { margin-top: 12px; color: var(--faint); font-size: .75rem; }
.onboarding-nav { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--hairline-soft); }
.onboarding-back { color: var(--muted); font-size: .875rem; }
.onboarding-nav .btn { min-width: 130px; }
.onboarding-gate { width: min(540px, calc(100% - 40px)); margin: 80px auto; text-align: center; padding: 40px 28px; border: 1px solid var(--hairline); border-radius: var(--radius-lg); background: var(--paper); }
.onboarding-gate .btn { margin-top: 18px; }
.public-no-script { max-width: 600px; margin: 100px auto; padding: 30px; text-align: center; }
.public-no-script p { color: var(--muted); }

@keyframes public-rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes public-drop { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes public-settle { from { opacity: 0; transform: translateY(14px) scale(.98); } to { opacity: 1; transform: none; } }
@media (max-width: 860px) {
  .public-nav { display: none; }
  .public-header { justify-content: space-between; }
}
@media (max-width: 900px) {
  .landing-hero { grid-template-columns: 1fr; gap: 36px; padding-top: 40px; }
  .landing-hero-art { max-width: 520px; }
  .landing-method-grid { grid-template-columns: 1fr; }
  .landing-method-grid > div, .landing-method-grid > div + div { padding: 16px 0 4px; border-left: 0; }
  .landing-method-grid > div + div { border-top: 1px solid var(--hairline); }
  .public-auth-shell { grid-template-columns: 1fr; }
  .public-auth-art { display: none; }
  .public-auth-form { flex-direction: column; min-height: calc(100vh - 64px); padding: 32px 24px; border-left: 0; }
  .public-mobile-brand { display: block; width: min(400px, 100%); margin-bottom: 28px; }
  .onboarding-top { margin-bottom: 32px; }
}
@media (max-width: 560px) {
  .public-header-hold { padding: 10px 12px 0; }
  .public-header { height: 54px; padding: 0 7px 0 16px; }
  .public-header-actions { gap: 14px; }
  .public-header-cta { padding: 9px 16px; }
  .public-header-cta .cta-long { display: none; }
  .public-header-cta .cta-short { display: inline; }
  .public-auth-shell { min-height: calc(100vh - 64px); margin-top: 10px; }
  .public-footer { flex-direction: column; padding: 22px 20px; }
  .public-landing { padding: 0 18px; }
  .landing-hero h1 { font-size: 2.4rem; }
  .landing-subject { grid-template-columns: 56px minmax(0, 1fr); gap: 16px; padding: 16px; }
  .landing-subject-art .emblem { width: 56px; }
  .landing-subject-arrow { display: none; }
  .onboarding-shell { width: calc(100% - 32px); }
  .onboarding-top { align-items: flex-start; flex-direction: column; gap: 18px; }
  .onboarding-two-col, .onboarding-subject-grid, .onboarding-discovery-grid { grid-template-columns: 1fr; }
  .onboarding-principles p { grid-template-columns: 1fr; gap: 4px; }
  .university-options { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .university-logo { width: 58px; height: 58px; }
  .university-logo img { width: 42px; height: 42px; }
  .university-option { min-height: 146px; }
}
@media (prefers-reduced-motion: reduce) {
  .public-app *, .public-app *::before, .public-app *::after { animation: none !important; transition: none !important; }
  .js-reveal [data-reveal] { opacity: 1; transform: none; }
}