/* Icons */
.icon { width: 1.25em; height: 1.25em; flex: none; }
/* Gold line icons: gold-600 on ivory, gold-500 on dark (non-text contrast >= 3:1) */
.icon--gold { color: var(--gold-600); }
.section--dark .icon--gold { color: var(--gold-500); }
.icon-btn {
  display: inline-grid; place-items: center;
  width: 44px; height: 44px;
  border: 0; border-radius: var(--radius-pill);
  background: transparent; color: inherit;
  transition: background-color var(--dur-fast) ease;
}
@media (hover: hover) {
  .icon-btn:hover { background: var(--paper-2); }
  .section--dark .icon-btn:hover,
  html:not(.menu-open) .page--dark-hero .site-header:not([data-scrolled='true']) .icon-btn:hover { background: var(--line-dark); }
}

/* Buttons (v2 pills). Hover is transform-only: a 1px lift on the individual `translate` property, so it
   composes with the GSAP transform of magnetic buttons. Foil buttons add a sheen that sweeps across. */
.btn {
  --btn-bg: var(--teal-700);
  --btn-fg: var(--on-dark);
  --btn-border: var(--teal-700);
  position: relative; isolation: isolate; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-3);
  min-height: 48px; padding: 0 var(--space-6);
  border: 1px solid var(--btn-border); border-radius: var(--radius-pill);
  background: var(--btn-bg); background-origin: border-box; color: var(--btn-fg);
  font: 500 var(--fs-small) / 1 var(--font-body); letter-spacing: .02em;
  text-decoration: none; white-space: nowrap;
  transition: translate var(--dur-base) var(--ease-out-expo);
}
.btn .icon { transition: transform var(--dur-base) var(--ease-out-expo); }
@media (hover: hover) {
  .btn:not(:disabled):not([aria-disabled='true']):hover { translate: 0 -1px; }
  .btn:not(:disabled):not([aria-disabled='true']):hover .icon { transform: translateX(4px); }
}
.btn--primary { --btn-bg: var(--gold-foil); --btn-fg: var(--teal-950); --btn-border: transparent; }
.btn--primary::after {
  content: ''; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(105deg, transparent 35%, color-mix(in srgb, var(--card) 55%, transparent) 50%, transparent 65%);
  transform: translateX(-110%);
  transition: transform var(--dur-slow) var(--ease-out-expo);
}
@media (hover: hover) { .btn--primary:not(:disabled):not([aria-disabled='true']):hover::after { transform: translateX(110%); } }
.btn--secondary { --btn-bg: transparent; --btn-fg: var(--teal-700); }
.btn--ghost-light { --btn-bg: transparent; --btn-fg: var(--on-dark); --btn-border: var(--line-dark-strong); }
.btn--outline-gold { --btn-bg: transparent; --btn-fg: var(--gold-700); --btn-border: var(--gold-600); }
/* Circular icon button with a gold rim. Foil stays reserved for the primary CTA (spec §1A.1). */
.btn--play {
  --btn-bg: transparent; --btn-fg: var(--gold-700); --btn-border: var(--gold-600);
  width: 72px; height: 72px; min-height: 0; padding: 0; border-radius: 50%;
}
.section--dark .btn--play { --btn-fg: var(--gold-500); --btn-border: var(--gold-500); }
.btn--play .icon { width: 26px; height: 26px; margin-left: 3px; }
@media (hover: hover) { .btn--play:not(:disabled):not([aria-disabled='true']):hover .icon { transform: none; } }
.btn--sm { min-height: 40px; padding: 0 var(--space-5); }
.btn--block { width: 100%; }
.btn:disabled, .btn[aria-disabled='true'] { opacity: .45; cursor: not-allowed; }

/* Links */
.link { position: relative; text-decoration: none; }
.link::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -3px; height: 1px;
  background: var(--gold-500);
  transform: scaleX(0); transform-origin: right;
  transition: transform var(--dur-slow) var(--ease-out-expo);
}
.link:hover::after, .link:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.link--static::after { transform: scaleX(1); }
.link--static:hover::after { transform: scaleX(.3); transform-origin: left; }

/* Tags, badges and stars */
.tag {
  display: inline-flex; align-items: center; gap: var(--space-2);
  min-height: 28px; padding: 0 var(--space-3);
  border: 1px solid var(--teal-500); border-radius: var(--radius-pill);
  font: 400 var(--fs-mono) / 1 var(--font-mono); letter-spacing: var(--tracking-mono); text-transform: uppercase;
  color: var(--text-muted);
}
.tag--solid { background: var(--teal-700); border-color: var(--teal-700); color: var(--on-dark); }
.badge {
  display: inline-flex; align-items: center; gap: var(--space-2);
  min-height: 30px; padding: 6px var(--space-4);
  border: 1px solid transparent; border-radius: var(--radius-pill);
  font: 400 var(--fs-mono) / 1.3 var(--font-mono); letter-spacing: var(--tracking-mono); text-transform: uppercase;
}
.badge .icon { width: 14px; height: 14px; }
.badge--gold { color: var(--gold-700); border-color: var(--gold-600); }
.section--dark .badge--gold { color: var(--gold-500); border-color: color-mix(in srgb, var(--gold-500) 55%, transparent); }
.badge--teal { background: var(--teal-700); border-color: var(--teal-700); color: var(--on-dark); }
.star { width: 1em; height: 1em; color: var(--gold-500); flex: none; }
.star--done { color: var(--teal-700); }
.star--next { color: var(--gold-500); }

/* Cards: the raised surface on ivory */
.card { padding: var(--space-6); background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card); }
.card--float { border-color: transparent; box-shadow: var(--shadow-card); }

/* Section header: eyebrow and title. The numbered index column is optional and not used on the landing page. */
.section-head { display: grid; gap: var(--space-3); justify-items: start; margin-bottom: clamp(var(--space-7), 6vw, var(--space-9)); }
.section-head h2 { max-width: 20ch; }
.section-head:has(> .section-head__index) { grid-template-columns: auto minmax(0, 1fr); column-gap: var(--space-5); align-items: baseline; }
.section-head:has(> .section-head__index) > :not(.section-head__index) { grid-column: 2; }
.section-head__index { grid-row: span 2; font-family: var(--font-mono); font-size: var(--fs-mono); color: var(--gold-700); }
.section--dark .section-head__index { color: var(--gold-500); }
/* R20: gold-700 is 4.3:1 on paper-2, so small labels on alternate sections use muted teal */
.section--alt :is(.eyebrow, .section-head__index) { color: var(--text-muted); }

/* Fields */
.field { display: grid; gap: var(--space-2); }
.field__label { font-weight: 500; font-size: var(--fs-small); }
.field__hint { font-size: var(--fs-small); color: var(--text-muted); }
.field__error { font-size: var(--fs-small); color: var(--danger); }
.input, .select, .textarea {
  width: 100%; min-height: 48px; padding: var(--space-3) var(--space-4);
  background: var(--paper); border: 1px solid var(--teal-500); border-radius: var(--radius-field);
  transition: border-color var(--dur-fast) ease, background-color var(--dur-fast) ease;
}
.input:hover, .select:hover, .textarea:hover { border-color: var(--teal-700); }
.input:focus-visible, .select:focus-visible, .textarea:focus-visible { outline: var(--focus-ring); outline-offset: 0; border-color: var(--teal-700); background: var(--paper); }
.field.is-invalid :is(.input, .select, .textarea) { border-color: var(--danger); background: var(--danger-bg); }
.textarea { min-height: 128px; resize: vertical; }
.select-wrap { position: relative; }
.select { appearance: none; padding-right: var(--space-8); }
.select-wrap .icon { position: absolute; right: var(--space-4); top: 50%; translate: 0 -50%; pointer-events: none; }
.check { display: flex; gap: var(--space-3); align-items: flex-start; font-size: var(--fs-small); }
.check input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--teal-700); flex: none; }

/* Accordion: panels stay open until EE.ui marks the accordion data-ready and sets data-state */
.accordion { border-top: 1px solid var(--line); }
.accordion__item { border-bottom: 1px solid var(--line); }
.accordion__heading { margin: 0; font: inherit; }
.accordion__trigger {
  display: flex; width: 100%; align-items: center; justify-content: space-between; gap: var(--space-5);
  padding: var(--space-5) 0; border: 0; background: none; text-align: left;
  font: 500 clamp(1.0625rem, 1rem + .3vw, 1.25rem) / 1.4 var(--font-body);
}
.accordion__icon { position: relative; width: 20px; height: 20px; flex: none; }
.accordion__icon::before, .accordion__icon::after {
  content: ''; position: absolute; left: 0; top: 50%; width: 100%; height: 1.5px; background: var(--gold-600);
  transition: transform var(--dur-slow) var(--ease-out-expo);
}
.accordion__icon::after { transform: rotate(90deg); }
.accordion__trigger[aria-expanded='true'] .accordion__icon::after { transform: rotate(0deg); }
.accordion__trigger[aria-expanded='true'] .accordion__icon::before { transform: rotate(180deg); }
.accordion__panel {
  display: grid; grid-template-rows: 1fr;
  transition: grid-template-rows var(--dur-slow) var(--ease-out-expo), visibility 0s linear 0s;
}
[data-accordion][data-ready] .accordion__panel:not([data-state='open']) {
  grid-template-rows: 0fr; visibility: hidden;
  transition: grid-template-rows var(--dur-slow) var(--ease-out-expo), visibility 0s linear var(--dur-slow);
}
.accordion__body { overflow: hidden; min-height: 0; }
.accordion__body > * { padding-bottom: var(--space-5); max-width: 68ch; color: var(--text-muted); }
/* v2 rows: separate 10px rows on the card surface (FAQ) */
.accordion--cards { display: grid; gap: var(--space-3); border-top: 0; }
.accordion--cards .accordion__item {
  padding-inline: var(--space-5);
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-field);
  transition: border-color var(--dur-base) ease;
}
.accordion--cards .accordion__item:has(.accordion__trigger[aria-expanded='true']) { border-color: var(--gold-500); }
.accordion--cards .accordion__trigger { padding-block: var(--space-4); }

/* Modal (native <dialog>) */
.modal {
  width: min(560px, 100% - 2 * var(--gutter)); max-height: calc(100dvh - 2 * var(--gutter)); overflow: auto; padding: 0;
  border: 0; border-radius: var(--radius-card);
  background: var(--paper); color: var(--text); box-shadow: var(--shadow-float);
  opacity: 0; transform: translateY(16px);
  transition: opacity var(--dur-base) var(--ease-out-expo), transform var(--dur-slow) var(--ease-out-expo),
    overlay var(--dur-base) allow-discrete, display var(--dur-base) allow-discrete;
}
.modal[open] { opacity: 1; transform: none; }
.modal::backdrop { background: var(--scrim); opacity: 0; transition: opacity var(--dur-base) ease, overlay var(--dur-base) allow-discrete, display var(--dur-base) allow-discrete; }
.modal[open]::backdrop { opacity: 1; }
@starting-style {
  .modal[open] { opacity: 0; transform: translateY(16px); }
  .modal[open]::backdrop { opacity: 0; }
}
.modal__inner { padding: var(--space-6); display: grid; gap: var(--space-5); }
.modal__body { display: grid; gap: var(--space-3); }
.modal__head { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-4); }
.modal__foot { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: var(--space-3); }

/* Toasts */
.toast-region {
  position: fixed; z-index: var(--z-toast); inset: auto var(--gutter) var(--gutter) auto;
  display: grid; gap: var(--space-3); justify-items: end; pointer-events: none;
}
.toast {
  pointer-events: auto; max-width: min(420px, calc(100vw - 2 * var(--gutter)));
  padding: var(--space-4) var(--space-5); border-left: 2px solid var(--gold-500);
  background: var(--teal-950); color: var(--on-dark); box-shadow: var(--shadow-float);
  font-size: var(--fs-small);
  opacity: 0; transform: translateY(12px);
  transition: opacity var(--dur-base) var(--ease-out-expo), transform var(--dur-slow) var(--ease-out-expo);
}
.toast.is-visible { opacity: 1; transform: none; }
.toast--success { border-left-color: var(--success); }
.toast--danger { border-left-color: var(--danger); }

/* Mask reveal curtain created by EE.motion */
[data-reveal='mask'] { position: relative; overflow: hidden; }
.reveal-curtain { position: absolute; inset: 0; z-index: 2; background: var(--curtain, var(--paper-2)); pointer-events: none; }

/* Page transition curtain */
.page-curtain {
  position: fixed; inset: 0; z-index: var(--z-transition);
  display: grid; place-items: center;
  background: var(--teal-950); color: var(--gold-500);
  transform: scaleY(0); transform-origin: bottom center;
  pointer-events: none;
}
html.is-entering .page-curtain { transform: scaleY(1); }
.page-curtain__star { width: 44px; height: 44px; }

/* Programmatic focus targets (hash links) keep a ring only for keyboard users */
[tabindex='-1']:focus:not(:focus-visible) { outline: none; }
/* Headings that only ever take script focus (verdicts, success panels, step and question titles) are marked
   data-focus-target and show no ring. Hash-link targets (legal contents, FAQ) keep it for keyboard users. */
[data-focus-target]:focus { outline: none; }

/* Wordmark: "EE MedPath" with an optional gold "MRCPI Part 2" sub-line */
.wordmark {
  position: relative; z-index: 2;
  display: inline-grid; grid-template-columns: auto auto auto; align-items: baseline; column-gap: var(--space-2); row-gap: 3px;
  text-decoration: none; font-family: var(--font-display); line-height: 1;
}
.wordmark__ee { font-size: 1.75rem; }
.wordmark__name { font-size: 1.25rem; }
.wordmark__star { width: 12px; height: 12px; color: var(--gold-500); align-self: start; }
.wordmark__sub { grid-column: 1 / -1; font: 400 .6875rem / 1 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--gold-700); }
.section--dark .wordmark__sub { color: var(--gold-500); }

/* Site header */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: var(--z-header);
  transition: transform var(--dur-slow) var(--ease-out-expo), background-color var(--dur-base) ease, border-color var(--dur-base) ease, color var(--dur-base) ease;
  border-bottom: 1px solid transparent;
}
/* Without JS nothing ever marks the header scrolled, so a fixed transparent bar would lie over the content */
html:not(.js) .site-header { position: absolute; }
.site-header[data-state='hidden'] { transform: translateY(-100%); }
.site-header[data-scrolled='true'] { background: var(--paper); border-bottom-color: var(--line); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); min-height: var(--header-h); }
.site-menu { display: flex; align-items: center; gap: var(--space-7); }
.site-menu__list { display: flex; gap: var(--space-6); margin: 0; }
.site-menu__link { font-size: var(--fs-small); font-weight: 500; text-decoration: none; }
.site-menu__link[aria-current='page'] { color: var(--gold-700); }
.site-menu__actions { display: flex; gap: var(--space-3); }
.nav-toggle { display: none; position: relative; z-index: 2; }
.nav-toggle__close { display: none; }
/* Over a dark hero (opt-in: <body class="page--dark-hero">) until motion.js marks the header scrolled:
   ivory text, gold-500 sub-line and focus ring, ghost-light "Sign in". The open mobile menu is always ivory. */
html:not(.menu-open) .page--dark-hero .site-header:not([data-scrolled='true']) {
  --focus-ring: 2px solid var(--gold-500);
  color: var(--on-dark);
}
html:not(.menu-open) .page--dark-hero .site-header:not([data-scrolled='true']) .wordmark__sub { color: var(--gold-500); }
html:not(.menu-open) .page--dark-hero .site-header:not([data-scrolled='true']) .btn--secondary { --btn-fg: var(--on-dark); --btn-border: var(--line-dark-strong); }

@media (max-width: 1023px) {
  .nav-toggle { display: inline-grid; }
  .nav-toggle[aria-expanded='true'] .nav-toggle__open { display: none; }
  .nav-toggle[aria-expanded='true'] .nav-toggle__close { display: block; }
  .site-menu {
    position: fixed; inset: 0; z-index: 1;
    flex-direction: column; align-items: stretch; justify-content: space-between; gap: var(--space-7);
    padding: calc(var(--header-h) + var(--space-6)) var(--gutter) var(--space-7);
    background: var(--paper);
    transform: translateY(-100%); visibility: hidden;
    transition: transform var(--dur-slow) var(--ease-out-expo), visibility 0s linear var(--dur-slow);
  }
  html.menu-open .site-menu { transform: none; visibility: visible; transition: transform var(--dur-slow) var(--ease-out-expo), visibility 0s; }
  .site-menu__list { flex-direction: column; gap: var(--space-3); }
  .site-menu__link { font: 400 clamp(2.25rem, 9vw, 3rem) / 1.2 var(--font-display); }
  .site-menu__actions { display: grid; grid-template-columns: 1fr 1fr; }
  html.menu-open .site-header { background: var(--paper); }
  /* Scroll lock for the open menu when Lenis is absent (Lenis is stopped by ui.js when present) */
  html.menu-open { overflow: hidden; }
}

/* Site footer */
.site-footer { padding-block: var(--space-9) var(--space-6); overflow: hidden; }
.site-footer__top { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: var(--space-6); padding-bottom: var(--space-8); border-bottom: 1px solid var(--line-dark); }
.site-footer__brand { display: grid; gap: var(--space-4); justify-items: start; }
.site-footer__brand .wordmark__ee { font-size: 2.5rem; }
.site-footer__brand .wordmark__name { font-size: 1.75rem; }
.site-footer__line { font-size: var(--fs-small); color: var(--on-dark-muted); }
.site-footer__social { display: flex; gap: var(--space-3); margin: 0; }
.social-btn {
  display: inline-grid; place-items: center; width: 44px; height: 44px;
  border: 1px solid var(--line-dark-strong); border-radius: 50%;
  color: var(--gold-500);
  transition: background-color var(--dur-fast) ease, border-color var(--dur-fast) ease;
}
.social-btn:hover { background: var(--line-dark); border-color: var(--gold-500); }
.social-btn .icon { width: 20px; height: 20px; }
.site-footer__cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: var(--space-7); padding-block: var(--space-8); }
.site-footer__cols ul { display: grid; gap: var(--space-3); margin-top: var(--space-4); }
.site-footer__cols a, .site-footer__button { color: var(--on-dark); text-decoration: none; font-size: var(--fs-small); }
.site-footer__button { padding: 0; border: 0; background: none; }
/* Decorative giant wordmark: drawn from a pseudo-element so it is not read as low-contrast text */
.site-footer__wordmark {
  overflow: hidden; margin-block: var(--space-6);
  font: 400 clamp(4rem, 17vw, 16rem) / .9 var(--font-display); letter-spacing: -.03em;
  color: var(--teal-700); white-space: nowrap;
}
.site-footer__wordmark span { display: block; }
.site-footer__wordmark span::before { content: attr(data-text); }
/* Bottom credit row: copyright left, developer credit right (spec §1A.3 item 11) */
.site-footer__legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-4); padding-top: var(--space-5); border-top: 1px solid var(--line-dark); font-size: var(--fs-small); color: var(--on-dark-muted); }
.site-footer__credit a { color: var(--on-dark); text-decoration: none; }

/* Cookie banner: a floating card */
.cookie-banner {
  position: fixed; z-index: var(--z-overlay); left: var(--gutter); bottom: var(--gutter);
  width: min(460px, calc(100% - 2 * var(--gutter)));
  display: grid; gap: var(--space-4); padding: var(--space-5);
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card); box-shadow: var(--shadow-card);
  font-size: var(--fs-small);
}
.cookie-banner__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }


/* Video modal (the landing trailer now, lesson previews later): a dark dialog that opens with opacity and scale */
.modal--video { width: min(960px, 100% - 2 * var(--gutter)); background: var(--teal-950); color: var(--on-dark); transform: scale(.96); }
.modal--video[open] { transform: none; }
@starting-style { .modal--video[open] { opacity: 0; transform: scale(.96); } }
.video-frame {
  position: relative; display: grid; place-content: center; justify-items: center; gap: var(--space-4);
  aspect-ratio: 16 / 9; padding: var(--space-6); overflow: hidden;
  border-radius: var(--radius-field); background: var(--teal-900); color: var(--on-dark-muted); text-align: center;
}
.video-frame__ecg { position: absolute; left: 0; top: 18%; width: 100%; height: 22%; fill: none; stroke: var(--gold-500); stroke-width: 1.5; opacity: .14; }
.video-frame__icon { position: relative; width: 56px; height: 56px; color: var(--gold-500); }
.video-frame p { position: relative; max-width: 36ch; }

/* Alerts: error summaries and notices */
.alert {
  --alert-tone: var(--teal-700);
  --alert-bg: var(--paper-2);
  display: grid; grid-template-columns: auto minmax(0, 1fr); gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--line); border-left: 3px solid var(--alert-tone); border-radius: var(--radius-field);
  background: var(--alert-bg); font-size: var(--fs-small);
}
.alert > .icon { width: 20px; height: 20px; margin-top: 1px; color: var(--alert-tone); }
.alert__title { margin: 0 0 var(--space-1); font: 600 var(--fs-body) / 1.4 var(--font-body); }
.alert ul { display: grid; gap: var(--space-2); margin: var(--space-2) 0 0; }
.alert:focus, .alert__title:focus { outline: none; }
.alert:focus-visible { outline: var(--focus-ring); outline-offset: 3px; }
.alert--success { --alert-tone: var(--success); --alert-bg: var(--success-bg); }
.alert--danger { --alert-tone: var(--danger); --alert-bg: var(--danger-bg); }
.alert--danger a { color: var(--danger); }
.alert--warning { --alert-tone: var(--warning); --alert-bg: var(--warning-bg); }

/* Vertical form rhythm; v2 field radius (idempotent if landing-v2 already set it) */
.form { display: grid; gap: var(--space-5); }
.input, .select, .textarea { border-radius: var(--radius-field); }

/* Button loading state: EE.forms sets aria-busy and appends .btn__spinner (a real element, so the
   v2 foil sheen keeps its pseudo-elements) */
.btn[aria-busy='true'] { cursor: progress; }
.btn__spinner {
  width: 14px; height: 14px; flex: none;
  border: 1.5px solid currentColor; border-right-color: transparent; border-radius: 50%;
  animation: btn-spin .7s linear infinite;
}
@keyframes btn-spin { to { transform: rotate(360deg); } }

/* Password field with visibility toggle */
.password { position: relative; }
.password .input { padding-right: 56px; }
.password__toggle { position: absolute; top: 2px; right: 2px; color: var(--text-muted); }
.password__toggle:hover { color: var(--text); }
.password__hide { display: none; }
.password__toggle[aria-pressed='true'] .password__show { display: none; }
.password__toggle[aria-pressed='true'] .password__hide { display: block; }

/* Input with a fixed prefix (currency) */
.input-affix { display: flex; }
.input-affix__prefix {
  display: grid; place-items: center; min-width: 48px; padding: 0 var(--space-3);
  border: 1px solid var(--teal-500); border-right: 0; border-radius: var(--radius-field) 0 0 var(--radius-field);
  background: var(--paper-2); font-family: var(--font-mono); color: var(--text-muted);
}
.input-affix .input { flex: 1; min-width: 0; border-radius: 0 var(--radius-field) var(--radius-field) 0; }
.field.is-invalid .input-affix__prefix { border-color: var(--danger); }

/* File drop zone: the native input shows until JS takes over */
.dropzone {
  position: relative; display: grid;
  border: 1px dashed var(--teal-500); border-radius: var(--radius-field); background: var(--card);
  transition: border-color var(--dur-fast) ease, background-color var(--dur-fast) ease;
}
.dropzone:hover, .dropzone.is-dragover { border-color: var(--teal-700); background: var(--paper-2); }
.dropzone.is-dragover { border-style: solid; }
.dropzone:focus-within { outline: var(--focus-ring); outline-offset: 2px; }
.field.is-invalid .dropzone { border-color: var(--danger); background: var(--danger-bg); }
.dropzone__input { margin: var(--space-5); }
.dropzone__prompt { display: none; }
html.js .dropzone__input { position: absolute; width: 1px; height: 1px; margin: 0; opacity: 0; overflow: hidden; clip: rect(0 0 0 0); }
html.js .dropzone__prompt {
  display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: var(--space-5);
  padding: var(--space-6) var(--space-5); cursor: pointer;
}
html.js .dropzone.has-file .dropzone__prompt { display: none; }
.dropzone__mark { display: grid; place-items: center; width: 56px; height: 56px; border: 1px solid var(--gold-500); border-radius: 50%; color: var(--gold-600); }
.dropzone__mark .icon { width: 22px; height: 22px; transition: transform var(--dur-base) var(--ease-out-expo); }
.dropzone.is-dragover .dropzone__mark .icon { transform: translateY(-4px); }
.dropzone__text { display: grid; gap: var(--space-1); }
.dropzone__text strong { font-weight: 500; }
/* Pointer-aware prompt: no dragging on touch screens (CSS only, no sniffing) */
.dropzone__hint--coarse { display: none; }
@media (pointer: coarse) {
  .dropzone__hint--fine, .dropzone__alt { display: none; }
  .dropzone__hint--coarse { display: inline; }
}
.dropzone__browse { color: var(--gold-700); text-decoration: underline; text-underline-offset: .2em; }
.field.is-invalid .dropzone__browse { color: var(--danger); }
.dropzone__preview { display: grid; grid-template-columns: 72px minmax(0, 1fr) auto; align-items: center; gap: var(--space-4); padding: var(--space-4); }
.dropzone__thumb { display: grid; place-items: center; width: 72px; height: 72px; overflow: hidden; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-1); color: var(--gold-600); }
.dropzone__thumb img { width: 100%; height: 100%; object-fit: cover; }
.dropzone__thumb .icon { width: 28px; height: 28px; }
.dropzone__meta { display: grid; gap: 2px; min-width: 0; }
.dropzone__name { font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dropzone__size { font-size: var(--fs-small); color: var(--text-muted); }

/* Demo-state bar: prototype only, removed in Phase 2 with demo-state.js */
.demo-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3) var(--space-5);
  padding: var(--space-3) var(--space-4);
  border: 1px dashed var(--gold-500); border-radius: var(--radius-field); background: var(--paper);
  font-size: var(--fs-small);
}
.demo-bar__label { color: var(--gold-700); }
.demo-bar ul { display: flex; flex-wrap: wrap; gap: var(--space-2); margin: 0; }
.demo-bar a {
  display: inline-flex; align-items: center; min-height: 32px; padding: 0 var(--space-4);
  border: 1px solid var(--line); border-radius: var(--radius-pill); background: var(--paper);
  text-decoration: none;
  transition: background-color var(--dur-fast) ease, border-color var(--dur-fast) ease, color var(--dur-fast) ease;
}
.demo-bar a:hover { border-color: var(--teal-500); }
.demo-bar a[aria-current] { background: var(--teal-700); border-color: var(--teal-700); color: var(--on-dark); }

/* Breadcrumb: four-point star separators */
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-1) var(--space-3); margin: 0; font-size: var(--fs-small); color: var(--text-muted); }
.breadcrumb li { display: inline-flex; align-items: center; gap: var(--space-3); min-width: 0; }
.breadcrumb li + li::before {
  content: ''; width: 7px; height: 7px; flex: none; background: var(--gold-500);
  clip-path: polygon(50% 0, 60% 40%, 100% 50%, 60% 60%, 50% 100%, 40% 60%, 0 50%, 40% 40%);
}
.breadcrumb a { display: inline-flex; align-items: center; min-height: 24px; }
.breadcrumb a:hover { color: var(--text); }
.breadcrumb [aria-current='page'] { color: var(--text); font-weight: 500; }

/* Tabs */
.tabs__list { display: flex; gap: var(--space-6); border-bottom: 1px solid var(--line); overflow-x: auto; scrollbar-width: none; }
.tabs__list::-webkit-scrollbar { display: none; }
.tabs__tab {
  position: relative; display: inline-flex; align-items: center; gap: var(--space-2); flex: none;
  min-height: 48px; padding: 0; border: 0; background: none;
  font: 500 var(--fs-small) / 1 var(--font-body); letter-spacing: .02em; color: var(--text-muted);
  transition: color var(--dur-fast) ease;
}
.tabs__tab::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--gold-500);
  transform: scaleX(0); transform-origin: left; transition: transform var(--dur-slow) var(--ease-out-expo);
}
.tabs__tab:hover, .tabs__tab[aria-selected='true'] { color: var(--text); }
.tabs__tab[aria-selected='true']::after { transform: scaleX(1); }
.tabs__tab:focus-visible { outline-offset: -2px; }
.tabs__count { font: 400 var(--fs-mono) / 1 var(--font-mono); color: var(--gold-700); }
.tabs__panel { padding-top: var(--space-6); }
.tabs__panel:focus-visible { outline-offset: 8px; }

/* Dropdown (disclosure) */
.dropdown { position: relative; }
.dropdown__panel {
  position: absolute; z-index: var(--z-overlay); top: calc(100% + var(--space-2)); right: 0;
  width: min(300px, calc(100vw - 2 * var(--gutter)));
  overflow: hidden; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card); box-shadow: var(--shadow-float);
  transition: opacity var(--dur-base) var(--ease-out-expo), transform var(--dur-slow) var(--ease-out-expo);
}
@starting-style {
  .dropdown__panel:not([hidden]) { opacity: 0; transform: translateY(-6px); }
}
.dropdown__panel:focus { outline: none; }
.dropdown__panel--wide { width: min(380px, calc(100vw - 2 * var(--gutter))); }
.dropdown__panel--start { left: 0; right: auto; }
.dropdown__head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--line); }
.dropdown__identity { display: grid; gap: 2px; padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--line); font-size: var(--fs-small); }
.dropdown__list { margin: 0; padding: var(--space-2) 0; }
.dropdown__item {
  display: flex; align-items: center; gap: var(--space-3); width: 100%; min-height: 44px;
  padding: 0 var(--space-5); border: 0; background: none; text-align: left; text-decoration: none;
  font-size: var(--fs-small); transition: background-color var(--dur-fast) ease;
}
.dropdown__item:hover { background: var(--paper-2); }
.dropdown__item:focus-visible { outline-offset: -2px; }
.dropdown__item .icon { width: 18px; height: 18px; color: var(--text-muted); }
.dropdown__foot { margin: 0; padding: var(--space-2) 0; border-top: 1px solid var(--line); }

/* Copy-to-clipboard button */
.copy-btn {
  display: inline-flex; align-items: center; flex: none;
  min-height: 36px; padding: 0 var(--space-3);
  border: 1px solid var(--line); border-radius: var(--radius-pill); background: var(--card);
  font: 400 var(--fs-mono) / 1 var(--font-mono); letter-spacing: var(--tracking-mono); text-transform: uppercase; color: var(--text-muted);
  transition: border-color var(--dur-fast) ease, color var(--dur-fast) ease;
}
.copy-btn:hover { border-color: var(--teal-500); color: var(--text); }
.copy-btn .icon { width: 14px; height: 14px; }
.copy-btn__idle, .copy-btn__done { display: inline-flex; align-items: center; gap: var(--space-2); }
.copy-btn__done, .copy-btn.is-copied .copy-btn__idle { display: none; }
.copy-btn.is-copied .copy-btn__done { display: inline-flex; }
.copy-btn.is-copied { border-color: var(--success); color: var(--success); }

/* Progress bar and ring: set --value (0–100) inline */
.progress { --value: 0; position: relative; height: 4px; overflow: hidden; border-radius: var(--radius-pill); background: var(--line); }
.progress__bar { position: absolute; inset: 0; border-radius: var(--radius-pill); background: var(--gold-500); transform: scaleX(calc(var(--value) / 100)); transform-origin: left center; }
.progress--strong { height: 6px; }
.progress--strong .progress__bar { background: var(--teal-700); }
html.js [data-fill]:not(.is-filled) .progress__bar { transform: scaleX(0); }

.progress-ring { --value: 0; --ring-size: 168px; position: relative; display: grid; place-items: center; width: var(--ring-size); aspect-ratio: 1; flex: none; }
.progress-ring svg { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); }
.progress-ring__track { fill: none; stroke: var(--line); stroke-width: 2; }
.progress-ring__value { fill: none; stroke: var(--gold-500); stroke-width: 3; stroke-dasharray: 100px; stroke-dashoffset: calc((100 - var(--value)) * 1px); }
html.js .progress-ring[data-fill]:not(.is-filled) .progress-ring__value { stroke-dashoffset: 100px; }
.progress-ring__label { position: relative; display: grid; justify-items: center; gap: var(--space-1); text-align: center; }
.progress-ring__num { font: 400 calc(var(--ring-size) * .3) / 1 var(--font-display); font-variant-numeric: lining-nums tabular-nums; }
.progress-ring__num small { margin-left: 2px; font-size: .45em; color: var(--gold-700); }
.progress-ring__label .mono { color: var(--text-muted); }

/* Lesson rows (course page, lesson sidebar): 10px rows with gold line type icons */
.lesson-list { display: grid; gap: 2px; margin: 0; }
.lesson-row__link {
  display: grid; grid-template-columns: 32px minmax(0, 1fr) auto 24px; align-items: center; gap: var(--space-4);
  min-height: 56px; padding: var(--space-3); border-radius: var(--radius-field);
  text-decoration: none; transition: background-color var(--dur-fast) ease;
}
.lesson-row__link:hover { background: var(--paper-2); }
.lesson-row__type { display: grid; place-items: center; width: 32px; height: 32px; color: var(--gold-600); }
.lesson-row__type .icon { width: 20px; height: 20px; }
.lesson-row__title { min-width: 0; }
.lesson-row__meta { color: var(--text-muted); white-space: nowrap; }
.lesson-row__status {
  display: grid; place-items: center; width: 24px; height: 24px;
  border: 1px solid var(--teal-500); border-radius: 50%; color: var(--on-dark);
  transition: background-color var(--dur-base) ease, border-color var(--dur-base) ease;
}
.lesson-row__status .icon { width: 14px; height: 14px; opacity: 0; transform: scale(.4); transition: opacity var(--dur-base) ease, transform var(--dur-slow) var(--ease-out-expo); }
.lesson-row[data-status='done'] .lesson-row__status { background: var(--teal-700); border-color: var(--teal-700); }
.lesson-row[data-status='done'] .lesson-row__status .icon { opacity: 1; transform: none; }
.lesson-row[data-status='done'] .lesson-row__title { color: var(--text-muted); }
.lesson-row[data-status='current'] .lesson-row__link { background: var(--card); box-shadow: inset 0 0 0 1px var(--gold-500); }
.lesson-row[data-status='current'] .lesson-row__title { font-weight: 600; }
.lesson-row[data-status='current'] .lesson-row__type { color: var(--gold-700); }
.lesson-row[data-status='current'] .lesson-row__status { border: 1.5px solid var(--gold-700); }
.lesson-row__link[aria-current='page'] { background: var(--teal-100); }
.lesson-row--compact .lesson-row__link { grid-template-columns: 28px minmax(0, 1fr) auto 20px; gap: var(--space-3); min-height: 48px; padding: var(--space-2) var(--space-4); font-size: var(--fs-small); }
.lesson-row--compact .lesson-row__type { width: 28px; height: 28px; }
.lesson-row--compact .lesson-row__type .icon { width: 18px; height: 18px; }
.lesson-row--compact .lesson-row__status { width: 20px; height: 20px; }
.lesson-row--compact .lesson-row__status .icon { width: 12px; height: 12px; }
@media (max-width: 479px) {
  .lesson-row__link { grid-template-columns: 32px minmax(0, 1fr) 24px; row-gap: var(--space-1); }
  .lesson-row__type { grid-row: 1 / span 2; }
  .lesson-row__meta { grid-column: 2; grid-row: 2; }
  .lesson-row__status { grid-column: 3; grid-row: 1 / span 2; }
}

/* Empty state: an outlined star on a dashed planned path */
.empty-state { display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: var(--space-5); padding: var(--space-6) var(--space-5); border: 1px dashed var(--teal-500); border-radius: var(--radius-card); }
.empty-state__mark { display: grid; justify-items: center; align-content: start; }
.empty-state__mark .star { width: 28px; height: 28px; color: var(--gold-500); }
.empty-state__mark::after { content: ''; height: 48px; margin-top: var(--space-2); border-left: 1px dashed var(--gold-500); }
.empty-state__body { display: grid; gap: var(--space-3); justify-items: start; }
.empty-state__title { margin: 0; font: 400 var(--fs-h3) / 1.15 var(--font-display); }
.empty-state__text { max-width: 44ch; color: var(--text-muted); }

/* Facts: label/value rows */
.facts { display: grid; margin: 0; }
.facts > div { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: var(--space-4); align-items: baseline; padding-block: var(--space-3); border-bottom: 1px solid var(--line); }
.facts > div:first-child { border-top: 1px solid var(--line); }
.facts dt { font: 400 var(--fs-mono) / 1.5 var(--font-mono); letter-spacing: var(--tracking-mono); text-transform: uppercase; color: var(--text-muted); }
.facts dd { margin: 0; font-weight: 500; overflow-wrap: anywhere; }
.facts__copy { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-3); }
.facts__code { font-family: var(--font-mono); font-weight: 400; letter-spacing: .04em; }

/* Long-form text */
.prose { display: grid; gap: var(--space-4); max-width: 68ch; }
.prose h2, .prose h3 { margin-top: var(--space-4); }
.prose ul { display: grid; gap: var(--space-2); margin: 0; padding: 0; list-style: none; }
.prose ul li { display: flex; align-items: baseline; gap: var(--space-3); }
.prose ul li::before {
  content: ''; width: 8px; height: 8px; flex: none; background: var(--gold-500);
  clip-path: polygon(50% 0, 60% 40%, 100% 50%, 60% 60%, 50% 100%, 40% 60%, 0 50%, 40% 40%);
}
.prose ol { display: grid; gap: var(--space-2); margin: 0; padding-left: 1.4em; }
.prose strong { font-weight: 600; }