/* CliniSpecs CEP participant presentation system
   Helvetica Neue / Helvetica / Arial only.
   Architecture B2 shell. Presentation only. t1911 visual final micro-polish.
*/

:root {
  --canvas: #ebeae6;
  --bg: #ffffff;
  --surface: #ffffff;
  --ink: #1a1a1a;
  --ink-soft: #3d3d3d;
  --ink-muted: #6b6b6b;
  --ink-faint: #8a8a8a;
  --line: #ececea;
  --line-strong: #dddcd8;
  --panel: #f8f7f4;
  --panel-deep: #f1f0ec;
  --accent: #1a1a1a;
  --accent-hover: #000000;
  --accent-active: #2a2a2a;
  --focus: #1a1a1a;
  --focus-ring: rgba(26, 26, 26, 0.14);
  --danger: #8b4a3f;
  --danger-ink: #7a4036;
  --danger-soft: #f5f1ef;
  --success: #1a1a1a;
  --success-soft: #f5f4f1;
  --radius: 12px;
  --radius-control: 8px;
  --radius-btn: 10px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
  --space-9: 56px;
  --content: 640px;
  --font: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --shadow-shell: 0 0 0 1px rgba(26, 26, 26, 0.05), 0 1px 0 rgba(26, 26, 26, 0.03), 0 28px 64px rgba(26, 26, 26, 0.07);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button, input, textarea, select, option {
  font-family: var(--font);
  color: inherit;
}

code, kbd, samp, pre { font-family: var(--font); }

h1, h2, h3, p, ul, ol, li, label, a, span, summary {
  font-family: inherit;
}

a {
  color: var(--ink-soft);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { color: var(--ink); }

.skip-link {
  position: absolute;
  left: 12px;
  top: 0;
  transform: translateY(-120%);
  z-index: 10;
  padding: 10px 14px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  border-radius: 0 0 8px 8px;
  font-size: 0.875rem;
}
.skip-link:focus {
  transform: none;
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Application shell — full-bleed mobile; framed column on desktop. */
.shell {
  width: 100%;
  max-width: var(--content);
  margin: 0 auto;
  min-height: 100vh;
  background: var(--surface);
  padding: 0 22px 64px;
}

/* Master brand mast — CliniSpecs commerce language, no CEP sub-brand. */
.mast {
  padding: 28px 0 18px;
  border-bottom: 1px solid var(--line);
}
.mast__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.mast__mark {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--ink);
}

.mast__program {
  margin: 8px 0 0;
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1.35;
  color: var(--ink-muted);
}

.mast__links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 0 0 auto;
}

.mast__links a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.8125rem;
  font-weight: 500;
  min-height: 44px;
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  border-radius: 8px;
}
.mast__links a:hover { color: var(--ink); background: var(--panel); }
.mast__links a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  color: var(--ink);
}

/* Progress — mobile: current stage + step N of 5 + bar.
   Desktop: spaced stage labels + bar. */
.cep-progress {
  padding: 18px 0 2px;
}
.cep-progress[hidden] { display: none !important; }

.cep-progress__compact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin: 0 0 12px;
}
.cep-progress__current {
  margin: 0;
  min-width: 0;
}
.cep-progress__eyebrow {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 2px;
}
.cep-progress__name {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
  line-height: 1.25;
}
.cep-progress__meta {
  margin: 0;
  flex: 0 0 auto;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--ink-muted);
  letter-spacing: 0.01em;
  white-space: nowrap;
  padding-top: 14px;
}

.cep-progress__steps {
  display: none;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  align-items: start;
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  font-size: 0.75rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.cep-progress__steps li {
  color: var(--ink-faint);
  font-weight: 500;
}
.cep-progress__steps li.is-done { color: var(--ink-muted); }
.cep-progress__steps li.is-current {
  color: var(--ink);
  font-weight: 600;
}

.cep-progress__track {
  height: 2px;
  background: var(--line-strong);
  border-radius: 1px;
  overflow: hidden;
}
.cep-progress__track > span {
  display: block;
  height: 100%;
  width: 8%;
  background: var(--ink);
  border-radius: 1px;
  transition: width 0.2s ease;
}
.cep-progress[data-current="intro"] .cep-progress__track > span { width: 12%; }
.cep-progress[data-current="impressions"] .cep-progress__track > span { width: 36%; }
.cep-progress[data-current="wear"] .cep-progress__track > span { width: 58%; }
.cep-progress[data-current="final"] .cep-progress__track > span { width: 80%; }
.cep-progress[data-current="done"] .cep-progress__track > span { width: 100%; }

.main-pad { padding: 4px 0 0; }

/* State isolation: exactly one screen. */
.screen { display: none !important; }
.screen.is-active { display: block !important; }

.card {
  background: transparent;
  border: 0;
  box-shadow: none;
  border-radius: 0;
  padding: 4px 0 0;
}

/* Typographic hierarchy — unequal weight */
.eyebrow {
  margin: 26px 0 10px;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

h1, .card h1 {
  margin: 0 0 14px;
  font-size: 1.8125rem;
  font-weight: 600;
  letter-spacing: -0.032em;
  line-height: 1.12;
  color: var(--ink);
}

.lede {
  margin: 0 0 20px;
  color: var(--ink-soft);
  font-size: 1.03125rem;
  line-height: 1.55;
  font-weight: 400;
  max-width: 38em;
}

.reassurance,
.steps-list {
  margin: 0 0 4px;
  padding: 0;
  list-style: none;
}
.reassurance li,
.steps-list li {
  position: relative;
  margin: 0;
  padding: 12px 0 12px 18px;
  color: var(--ink-soft);
  font-size: 0.9375rem;
  line-height: 1.45;
}
.reassurance li + li,
.steps-list li + li {
  border-top: 1px solid var(--line);
}
.reassurance li::before,
.steps-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--ink);
}
.reassurance li.security-note {
  color: var(--ink);
  font-weight: 500;
}
.reassurance li.security-note::before {
  background: var(--ink);
}

.steps-list { counter-reset: step; }
.steps-list li { padding-left: 28px; }
.steps-list li::before {
  counter-increment: step;
  content: counter(step);
  width: auto;
  height: auto;
  top: 12px;
  border-radius: 0;
  background: none;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ink);
}

.fold {
  margin: 4px 0 8px;
  border-top: 1px solid var(--line);
}
.fold summary {
  cursor: pointer;
  padding: 14px 0;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--ink);
  list-style: none;
}
.fold summary::-webkit-details-marker { display: none; }
.fold summary::after {
  content: "+";
  float: right;
  color: var(--ink-muted);
  font-weight: 500;
}
.fold[open] summary::after { content: "–"; }
.fold summary:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}
.fold p {
  margin: 0 0 14px;
  color: var(--ink-soft);
  font-size: 0.9375rem;
  line-height: 1.55;
}

.notice-meta { display: none !important; }

.foot-note {
  margin: 24px 0 0;
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--ink-muted);
}

.close-cue {
  margin: 28px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.counsel-banner { display: none !important; }

/* Buttons */
.actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  margin-top: 28px;
}

button {
  appearance: none;
  -webkit-appearance: none;
  border: 0;
  background: none;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1.2;
  letter-spacing: -0.011em;
}

button.primary,
button.secondary,
button.ghost,
button.tertiary {
  min-height: 50px;
  padding: 14px 20px;
  border-radius: var(--radius-btn);
  width: 100%;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}

button.primary {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}
button.primary:hover:not(:disabled) { background: var(--accent-hover); }
button.primary:active:not(:disabled) { background: var(--accent-active); }
button.primary:disabled {
  background: #cfcfcf;
  color: #fff;
  cursor: not-allowed;
  opacity: 1;
}

button.secondary,
button.ghost {
  background: transparent;
  color: var(--ink);
  font-weight: 500;
  border: 1px solid var(--line-strong);
}
button.secondary:hover:not(:disabled),
button.ghost:hover:not(:disabled) { background: var(--panel); }
button.secondary:active:not(:disabled),
button.ghost:active:not(:disabled) { background: var(--panel-deep); }
button.secondary:disabled,
button.ghost:disabled { color: var(--ink-faint); cursor: not-allowed; }

button.tertiary {
  background: transparent;
  color: var(--ink-muted);
  font-weight: 500;
  font-size: 0.9375rem;
  min-height: 44px;
}
button.tertiary:hover:not(:disabled) { color: var(--ink); }
button.tertiary:disabled { color: var(--ink-faint); cursor: not-allowed; }

button.is-loading {
  color: transparent !important;
  position: relative;
  pointer-events: none;
}
button.is-loading::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  animation: cep-spin 0.7s linear infinite;
}
button.secondary.is-loading::after,
button.ghost.is-loading::after,
button.tertiary.is-loading::after {
  border-color: rgba(26, 26, 26, 0.2);
  border-top-color: var(--ink);
}

button:focus { outline: none; }
button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

/* Questions — type, spacing, subtle surfaces; less boxing */
.q-block {
  margin: 0;
  padding: 26px 0 22px;
  border-bottom: 1px solid var(--line);
}
.q-block:first-child { padding-top: 10px; }
.q-block:last-child { border-bottom: 0; }
.q-id { display: none; }

.q-optional {
  display: inline-block;
  margin: 0 0 10px;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.q-stem {
  display: block;
  margin: 0 0 8px;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.018em;
  line-height: 1.35;
  color: var(--ink);
}
.q-helper {
  display: block;
  margin: 0 0 14px;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--ink-muted);
  font-weight: 400;
}

.likert-legend {
  margin: 0 0 8px;
  font-size: 0.8125rem;
  color: var(--ink-muted);
}

.choice-stack,
.likert,
.likert-verbal,
.enum {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
}

.enum label,
.likert-verbal label,
.enum-check {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin: 0;
  padding: 14px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  background: var(--panel);
  color: var(--ink);
  font-size: 0.9375rem;
  line-height: 1.4;
  cursor: pointer;
  min-height: 52px;
  transition: background-color 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}
.enum label span,
.likert-verbal label span,
.enum-check span { padding-top: 1px; }

.enum label:hover,
.likert-verbal label:hover,
.enum-check:hover {
  background: var(--panel-deep);
}

/* Selected: obvious without heavy full-row black outline */
.enum label:has(input:checked),
.likert-verbal label:has(input:checked),
.enum-check:has(input:checked) {
  background: #fff;
  border-color: transparent;
  box-shadow: inset 3px 0 0 var(--ink), 0 0 0 1px var(--line-strong);
}

.enum label:has(input:focus-visible),
.likert-verbal label:has(input:focus-visible),
.enum-check:has(input:focus-visible) {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.likert-verbal label.likert-extra { color: var(--ink-soft); }

input[type="radio"],
input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin: 1px 0 0;
  flex: 0 0 20px;
  border: 1.5px solid #8a8a8a;
  background: #fff;
  display: grid;
  place-items: center;
  cursor: pointer;
}
input[type="radio"] { border-radius: 50%; }
input[type="checkbox"] { border-radius: 5px; }

input[type="radio"]:checked {
  border-color: var(--ink);
  background:
    radial-gradient(circle at center, var(--ink) 0 5px, #fff 5.5px);
}
input[type="checkbox"]:checked {
  border-color: var(--ink);
  background-color: var(--ink);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' d='M3.5 8.2l3 3.1 6-6.6'/></svg>");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 14px 14px;
}
input[type="radio"]:focus, input[type="checkbox"]:focus { outline: none; }

.q-block.is-invalid {
  box-shadow: inset 3px 0 0 var(--danger);
  background: transparent;
  padding-left: 12px;
}
.q-block.is-invalid::before {
  content: "This question needs an answer.";
  display: block;
  margin: 0 0 10px;
  color: var(--danger-ink);
  font-size: 0.8125rem;
  font-weight: 500;
}
.q-block.is-invalid .q-stem { color: var(--ink); }
/* Keep choice surfaces calm — error is text + left bar, not colour flood */
.q-block.is-invalid .enum label,
.q-block.is-invalid .likert-verbal label,
.q-block.is-invalid .enum-check {
  background: var(--panel);
}
.q-block.is-invalid textarea {
  border-color: var(--danger);
  background: #fff;
}

textarea,
input[type="text"],
input[type="email"],
input[type="search"],
select {
  width: 100%;
  margin-top: 12px;
  padding: 14px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-control);
  background: #fff;
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.45;
  appearance: none;
  -webkit-appearance: none;
}
textarea { min-height: 7.5rem; resize: vertical; }
select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path fill='none' stroke='%231a1a1a' stroke-width='1.5' d='M3 6l5 5 5-5'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 14px 14px;
  padding-right: 36px;
}
textarea:hover,
input[type="text"]:hover,
input[type="email"]:hover,
select:hover { border-color: #b8b7b2; }
textarea:focus,
input[type="text"]:focus,
input[type="email"]:focus,
select:focus {
  outline: none;
  border-color: var(--ink);
  box-shadow: 0 0 0 3px var(--focus-ring);
}
textarea:disabled,
input:disabled,
select:disabled {
  background: var(--panel);
  color: var(--ink-faint);
  cursor: not-allowed;
}

.status-note {
  margin: 14px 0 0;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--ink-muted);
}
.status-note[role="alert"] {
  color: var(--danger-ink);
  background: var(--danger-soft);
  border-radius: var(--radius-control);
  padding: 12px 14px;
  box-shadow: inset 3px 0 0 var(--danger);
}
.status-note.is-success {
  color: var(--ink);
  background: var(--success-soft);
  border-radius: var(--radius-control);
  padding: 12px 14px;
}
.error-banner {
  margin: 0 0 16px;
  padding: 12px 14px;
  border-radius: var(--radius-control);
  background: var(--danger-soft);
  color: var(--danger-ink);
  font-size: 0.875rem;
}

.loading-block { padding-top: 48px; }
.loading-mark {
  display: block;
  width: 22px;
  height: 22px;
  margin: 0 0 20px;
  border-radius: 50%;
  border: 2px solid var(--line-strong);
  border-top-color: var(--ink);
  animation: cep-spin 0.7s linear infinite;
}

.hidden { display: none !important; }

/* Terminal states — no progress chrome needed; quieter close */
.terminal .actions { margin-top: 24px; }

@keyframes cep-spin { to { transform: rotate(360deg); } }

@media (max-width: 359px) {
  .shell { padding-left: 16px; padding-right: 16px; }
  h1, .card h1 { font-size: 1.5625rem; }
  .mast { padding-top: 22px; }
  .mast__links a { padding: 0 6px; }
}

@media (min-width: 360px) and (max-width: 389px) {
  .shell { padding-left: 18px; padding-right: 18px; }
}

@media (min-width: 390px) and (max-width: 429px) {
  .shell { padding-left: 22px; padding-right: 22px; }
}

@media (min-width: 430px) and (max-width: 767px) {
  .shell { padding-left: 24px; padding-right: 24px; }
  h1, .card h1 { font-size: 1.9375rem; }
}

/* Desktop: intentional premium app frame — readable questionnaire width; mobile intact */
@media (min-width: 768px) {
  html, body { background: var(--canvas); }
  body { padding: 36px 32px 48px; }
  .shell {
    max-width: 700px;
    min-height: calc(100vh - 84px);
    padding: 8px 48px 72px;
    border-radius: 16px;
    box-shadow: var(--shadow-shell);
  }
  .mast { padding: 28px 0 18px; }
  .mast__mark { font-size: 1.1875rem; }
  .mast__program { font-size: 0.8125rem; }
  .cep-progress { padding: 20px 0 6px; }
  .cep-progress__compact { display: none; }
  .cep-progress__steps { display: grid; }
  h1, .card h1 { font-size: 2rem; margin-bottom: 16px; }
  .lede { font-size: 1.0625rem; margin-bottom: 22px; max-width: 40em; }
  .eyebrow { margin-top: 28px; }
  .main-pad { padding-top: 8px; }
  .q-block { padding: 28px 0 24px; }
  .enum label,
  .likert-verbal label,
  .enum-check { padding: 13px 16px; }
}

@media (min-width: 1024px) {
  body { padding: 44px 40px 56px; }
  .shell {
    max-width: 720px;
    min-height: calc(100vh - 100px);
    padding: 10px 52px 80px;
  }
}

@media (min-width: 1280px) {
  /* Premium desktop app window — not a mobile sheet on an infinite grey void */
  body {
    padding: 48px 56px 64px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
  }
  .shell {
    width: 100%;
    max-width: 720px;
    min-height: calc(100vh - 112px);
    padding: 12px 56px 84px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}