/* Hardware Lab — app-level layout on top of Nocturne's tokens/components.
   The mockup wraps every screen in a fixed 1160px card; here the card IS
   the page, so we drop the fixed width/shadow and centre a max-width column. */

@keyframes noct-pulse { 0% { transform: scale(.72); opacity: .55 } 70%, 100% { transform: scale(1.25); opacity: 0 } }
@keyframes noct-dot { 0%, 100% { opacity: .25 } 50% { opacity: 1 } }

html, body { min-height: 100%; }
body { background: var(--color-bg); }

.page { max-width: 1100px; margin: 0 auto; }
.page-pad { padding: 40px 32px 48px; }

.hr-fade {
  height: 1px; width: 100%;
  background: linear-gradient(to right, transparent, var(--color-divider) 48px, var(--color-divider) calc(100% - 48px), transparent);
}

/* — password field show/hide toggle — */
.pw-wrap { position: relative; display: flex; }
.pw-wrap .input { padding-right: 38px; }
.pw-toggle {
  position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  width: 28px; height: 28px; display: grid; place-items: center;
  background: transparent; border: 0; border-radius: var(--radius-sm);
  color: color-mix(in srgb, var(--color-text) 55%, transparent); cursor: pointer;
}
.pw-toggle:hover { color: var(--color-text); background: color-mix(in srgb, var(--color-text) 8%, transparent); }
.pw-toggle:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 1px; }

/* Chrome/Edge/Safari paint autofilled fields with their own opaque light
   background + dark text, ignoring the theme entirely — this pushes that
   back to the surface color so a saved/autofilled password field doesn't
   flash white (and swallow the toggle icon along with it). The absurd
   transition delay is the standard trick to stop the browser's own
   background-color transition from fighting this override. */
.input:-webkit-autofill,
.input:-webkit-autofill:hover,
.input:-webkit-autofill:focus,
.input:-webkit-autofill:active {
  -webkit-text-fill-color: var(--color-text);
  caret-color: var(--color-accent);
  -webkit-box-shadow: 0 0 0px 1000px var(--color-surface) inset;
  box-shadow: 0 0 0px 1000px var(--color-surface) inset;
  transition: background-color 5000s ease-in-out 0s;
}

/* — 01 welcome — */
.welcome-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; padding: 40px 32px 48px; align-items: center; }
.welcome-col { display: flex; flex-direction: column; gap: 18px; }
.topic-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-frame { position: relative; height: 340px; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); }
.hero-frame img { width: 100%; height: 100%; object-fit: cover; }
.hero-scrim { position: absolute; left: 0; right: 0; bottom: 0; height: 45%; background: linear-gradient(to top, var(--color-bg), transparent); pointer-events: none; }
.hero-caption { position: absolute; left: 14px; bottom: 14px; background: color-mix(in srgb, var(--color-bg) 70%, transparent); }
@media (max-width: 900px) {
  .welcome-grid { grid-template-columns: 1fr; }
}

/* — 02 registration — */
.register-grid { display: grid; grid-template-columns: 1fr 420px; gap: 48px; padding: 44px 32px 52px; }
.register-intro { display: flex; flex-direction: column; gap: 14px; max-width: 44ch; }
.register-steps { margin: 6px 0 0; padding-left: 18px; font-size: 13px; display: flex; flex-direction: column; gap: 6px; }
.field-error { margin: -8px 0 0; font-size: 12px; display: flex; align-items: center; gap: 6px; }
@media (max-width: 820px) {
  .register-grid { grid-template-columns: 1fr; }
}

/* — 03 pending — */
.pending-body { padding: 52px 32px 60px; display: flex; flex-direction: column; align-items: center; gap: 22px; text-align: center; }
.pulse-mark { position: relative; width: 120px; height: 120px; display: grid; place-items: center; }
.pulse-ring { position: absolute; width: 120px; height: 120px; border-radius: 50%; border: 1px solid var(--color-accent); animation: noct-pulse 3.2s ease-out infinite; }
.pulse-ring.delay { animation-delay: 1.6s; }
.pulse-core { width: 62px; height: 62px; border-radius: 50%; background: var(--color-accent-900); box-shadow: 0 0 32px color-mix(in srgb, var(--color-accent) 35%, transparent); display: grid; place-items: center; }
.tracker { display: flex; align-items: center; gap: 0; margin-top: 6px; }
.tracker-step { display: flex; flex-direction: column; align-items: center; gap: 8px; width: 170px; }
.tracker-line { width: 64px; height: 1px; background: var(--color-divider); margin-bottom: 22px; }
.tracker-dot-done { width: 26px; height: 26px; border-radius: 50%; background: var(--color-accent-800); display: grid; place-items: center; }
.tracker-dot-active { width: 26px; height: 26px; border-radius: 50%; border: 1.5px solid var(--color-accent); display: grid; place-items: center; box-shadow: 0 0 18px color-mix(in srgb, var(--color-accent) 30%, transparent); }
.tracker-dot-active > span { width: 7px; height: 7px; border-radius: 50%; background: var(--color-accent); animation: noct-dot 1.4s ease-in-out infinite; }
.tracker-dot-pending { width: 26px; height: 26px; border-radius: 50%; border: 1.5px dashed var(--color-neutral-600); }
.tracker-step.is-pending { opacity: .5; }

/* — 04 quiz step — */
.quiz-header { display: flex; align-items: center; gap: 14px; padding: 14px 32px; }
.quiz-progress-track { height: 4px; background: color-mix(in srgb, var(--color-text) 8%, transparent); }
.quiz-progress-fill { height: 100%; background: var(--color-accent); box-shadow: 0 0 12px color-mix(in srgb, var(--color-accent) 60%, transparent); transition: width 160ms ease; }
.quiz-body { padding: 34px 32px 40px; display: flex; flex-direction: column; gap: 26px; }
.option-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.option-card {
  position: relative; border: 1px solid var(--color-divider); border-radius: var(--radius-md);
  background: var(--color-surface); padding: 10px; display: flex; flex-direction: column; gap: 10px;
  cursor: pointer; transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease, background 140ms ease;
}
.option-card:hover:not(.is-locked):not(.is-selected) { border-color: color-mix(in srgb, var(--color-text) 40%, transparent); background: color-mix(in srgb, var(--color-text) 5%, var(--color-surface)); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.option-card.is-selected {
  border: 2px solid var(--color-accent); padding: 9px;
  background: color-mix(in srgb, var(--color-accent) 8%, var(--color-surface));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--color-accent) 40%, transparent), 0 0 26px color-mix(in srgb, var(--color-accent) 22%, transparent);
}
.option-card.is-locked { opacity: .45; cursor: not-allowed; }
.option-photo { position: relative; height: 170px; border-radius: var(--radius-sm); overflow: hidden; background: var(--color-neutral-900); }
.option-photo img { width: 100%; height: 100%; object-fit: cover; }
.option-photo-empty { width: 100%; height: 100%; display: grid; place-items: center; font-size: 11px; color: var(--color-neutral-600); text-align: center; padding: 8px; }
.option-check {
  position: absolute; top: 8px; right: 8px; width: 26px; height: 26px; border-radius: 50%;
  background: var(--color-accent); display: none; place-items: center; box-shadow: 0 2px 10px rgba(0,0,0,.5);
}
.option-card.is-selected .option-check { display: grid; }
.option-footer { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.option-letter { font-size: 13.5px; font-family: var(--font-heading); }
.option-card.is-selected .option-letter { color: var(--color-accent-200); }
.option-radio { width: 20px; height: 20px; border-radius: 50%; border: 1.5px solid var(--color-neutral-600); flex: none; }
.option-card.is-selected .option-radio { display: none; }
.option-selected-tag { display: none; }
.option-card.is-selected .option-selected-tag { display: inline-flex; }
.option-card input[type="radio"] { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
.quiz-footer { display: flex; align-items: center; gap: 12px; padding-top: 6px; }
@media (max-width: 640px) {
  .option-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .option-photo { height: 96px; }
  .quiz-header { padding: 12px 16px; }
  .quiz-header .btn-icon { width: 44px; height: 44px; }
  .quiz-body { padding: 20px 16px 24px; }
  .quiz-footer .btn-secondary { flex: none; min-height: 44px; }
  .quiz-footer .btn-primary { flex: 1; min-height: 44px; }
  .quiz-footer .quiz-footer-note { display: none; }
}

/* — 05/06 review states — */
.review-thumb { position: relative; height: 74px; border-radius: var(--radius-sm); background: var(--color-neutral-900); overflow: hidden; }
.review-thumb img { width: 100%; height: 100%; object-fit: cover; }
.review-thumb.is-correct { border: 1.5px solid #3d9a66; }
.review-thumb.is-wrong { border: 1.5px solid #d45b5b; }
.review-thumb.is-skipped { border: 1.5px dashed var(--color-neutral-600); display: grid; place-items: center; }
.review-glyph { position: absolute; top: 5px; right: 5px; width: 18px; height: 18px; border-radius: 50%; display: grid; place-items: center; }
.review-glyph.correct { background: #3d9a66; }
.review-glyph.wrong { background: #d45b5b; }
.review-caption {
  font-size: 11px;
  display: inline-block;
  padding: 3px 7px;
  border-radius: var(--radius-sm);
  line-height: 1.3;
  max-width: 100%;
  word-break: break-word;
}
.review-caption.is-correct { background: #1b3a28; color: #b6f0c8; }
.review-caption.is-wrong { background: #4a1c1c; color: #ffc9c9; }
.review-caption.is-skipped { background: var(--color-neutral-800); color: var(--color-neutral-400); }

/* Closed <dialog> must stay hidden — .card { display:flex } would override the UA rule. */
dialog:not([open]) { display: none !important; }

/* — 06 results — */
.results-grid { display: grid; grid-template-columns: 340px 1fr; gap: 44px; padding: 40px 32px 46px; }
.score-line { display: flex; align-items: baseline; gap: 8px; }
.score-number { font-family: var(--font-heading); font-size: 76px; line-height: 1; color: var(--color-accent-300); }
.topic-row { display: flex; align-items: center; gap: 14px; }
.topic-row-label { width: 150px; font-size: 13.5px; }
.topic-track { flex: 1; height: 6px; border-radius: 3px; background: color-mix(in srgb, var(--color-text) 8%, transparent); }
.topic-fill { height: 100%; border-radius: 3px; background: var(--color-accent); }
.topic-row-count { font-size: 12.5px; width: 44px; text-align: right; color: color-mix(in srgb, var(--color-text) 55%, transparent); }
.review-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
@media (max-width: 820px) {
  .results-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: repeat(3, 1fr); }
}

/* — 07 teacher — */
.teacher-login-card { width: 420px; max-width: 100%; margin: 48px auto; padding: 34px 28px; display: flex; flex-direction: column; gap: 16px; background: var(--color-bg); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.action-cell { display: flex; gap: 8px; justify-content: flex-end; align-items: center; }

/* — superadmin (new, styled to match Nocturne; not in the original mockup) — */
.sa-shell { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.sa-sidebar { padding: 24px 18px; display: flex; flex-direction: column; gap: 4px; border-right: 1px solid var(--color-divider); }
.sa-sidebar a { display: block; padding: 8px 10px; border-radius: var(--radius-sm); font-size: 14px; color: var(--color-text); text-decoration: none; }
.sa-sidebar a:hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.sa-sidebar a[aria-current="page"] { color: var(--color-accent); background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.sa-main { padding: 32px 40px 60px; max-width: 1000px; }
.sa-flash { padding: 10px 14px; border-radius: var(--radius-md); border: 1px solid var(--color-divider); font-size: 13px; margin-bottom: 18px; }
.sa-flash.ok { border-color: var(--color-accent); color: var(--color-accent-200); }
.sa-flash.err { border-color: var(--color-neutral-400); }
.sa-question-row { display: flex; align-items: center; gap: 14px; padding: 12px 0; }
.sa-q-meta { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.sa-opt-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.sa-opt-card { display: flex; flex-direction: column; gap: 8px; }
.sa-opt-thumb { height: 96px; border-radius: var(--radius-sm); background: var(--color-neutral-900); overflow: hidden; display: grid; place-items: center; position: relative; }
.sa-opt-thumb img { width: 100%; height: 100%; object-fit: cover; }
.sa-badge-missing { color: var(--color-neutral-400); }
.sa-badge-complete { color: var(--color-accent-300); }
textarea.json-input { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; min-height: 260px; }
.dropzone {
  border: 1.5px dashed var(--color-neutral-600); border-radius: var(--radius-md);
  padding: 18px; text-align: center; font-size: 12.5px; color: color-mix(in srgb, var(--color-text) 60%, transparent);
}

/* — session progress strip (student home / results) — */
.session-strip {
  display: flex; align-items: center; flex-wrap: wrap; gap: 8px 10px;
  padding: 12px 14px; border: 1px solid var(--color-divider); border-radius: var(--radius-md);
}
.session-strip-step {
  display: flex; flex-direction: column; gap: 2px; min-width: 72px;
}
.session-strip-label { font-size: 13px; font-weight: 600; }
.session-strip-sub { font-size: 11px; color: color-mix(in srgb, var(--color-text) 55%, transparent); }
.session-strip-arrow { color: color-mix(in srgb, var(--color-text) 35%, transparent); font-size: 12px; }
.session-strip-step.is-locked .session-strip-label { color: color-mix(in srgb, var(--color-text) 45%, transparent); }
.session-strip-step.is-waiting .session-strip-label { color: var(--color-accent); }
.session-strip-step.is-ready .session-strip-label,
.session-strip-step.is-progress .session-strip-label { color: var(--color-accent-200, var(--color-accent)); }
.session-strip-step.is-done .session-strip-label { color: var(--color-accent); }
.session-strip-step.is-current { outline: 1px solid var(--color-accent); outline-offset: 4px; border-radius: 4px; padding: 2px 4px; }

/* — landing how-it-works — */
.how-it-works { padding: 40px 32px 56px; max-width: 960px; }
.how-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.how-step {
  display: flex; flex-direction: column; gap: 8px;
  padding: 16px 18px; border: 1px solid var(--color-divider); border-radius: var(--radius-md);
}
@media (max-width: 820px) {
  .how-steps { grid-template-columns: 1fr; }
}