/* =========================================================
   Carthena Talent Screen - Brand v2
   Compliant with Carthena Advisory Brand Manual v1.0
   Typography: Arial primary, Georgia display (headings only)
   Colour: Red #FF0000, Black #000000, supporting greys only
   ========================================================= */

:root {
  /* === Brand Primary === */
  --carthena-red:     #FF0000;
  --carthena-black:   #000000;

  /* === Supporting Palette === */
  --charcoal:         #333333;
  --dark-gray:        #555555;
  --mid-gray:         #888888;
  --light-gray:       #CCCCCC;
  --very-light:       #F0F0F0;
  --background:       #F5F5F5;
  --paper:            #FFFFFF;
  --red-tint:         #FFE5E5;

  /* === Functional aliases === */
  --ink:              var(--carthena-black);
  --ink-soft:         var(--charcoal);
  --muted:            var(--mid-gray);
  --rule:             var(--light-gray);
  --rule-strong:      var(--charcoal);
  --accent:           var(--carthena-red);
  --warn:             var(--carthena-red);

  /* === Typography === */
  --sans:  Arial, Helvetica, 'Liberation Sans', sans-serif;
  --serif: Georgia, 'Liberation Serif', 'Times New Roman', serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  font-family: var(--sans);
  font-size: 16px;
  color: var(--ink);
  background: var(--background);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* Subtle dotted-world-map reference in page background (brand motif) */
body {
  background-image: radial-gradient(circle, var(--light-gray) 1px, transparent 1px);
  background-size: 32px 32px;
  background-attachment: fixed;
  background-color: var(--background);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: var(--background);
  opacity: 0.82;
  z-index: -1;
  pointer-events: none;
}

/* =========== Typography =========== */
h1, h2, h3, h4 {
  font-family: var(--sans);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(1.5rem, 3vw, 2rem); line-height: 1.2; }
h2 { font-size: 1.25rem; line-height: 1.3; }
h3 { font-size: 0.95rem; line-height: 1.3; }
p  { color: var(--ink-soft); font-size: 0.95rem; }

.eyebrow {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--mid-gray);
}

/* =========== Layout shell =========== */
.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 3rem;
}

/* =========== Header / wordmark =========== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--light-gray);
  margin-bottom: 2rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand { display: flex; align-items: baseline; gap: 0.75rem; flex-wrap: wrap; }

/* Wordmark - strict red-black alternation per brand manual:
   "CAR" red, "TH" black, "ENA" red, "ADVISORY" black */
.wordmark {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.03em;
  line-height: 1;
}
.wordmark .red   { color: var(--carthena-red); }
.wordmark .black { color: var(--carthena-black); }
.wordmark-adv {
  color: var(--carthena-black);
  font-weight: 700;
  margin-left: 0.45rem;
}

.brand-descriptor {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mid-gray);
  font-weight: 400;
}

.product-tag {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--dark-gray);
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--light-gray);
  background: var(--paper);
  font-weight: 700;
}

/* =========== Candidate chip =========== */
.candidate-chip {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--dark-gray);
}
.candidate-chip .avatar {
  width: 32px; height: 32px;
  background: var(--carthena-black);
  color: var(--paper);
  display: grid; place-items: center;
  font-weight: 700;
  font-size: 0.78rem;
}

/* Red square marker - brand signature from business cards */
.red-marker {
  display: inline-block;
  width: 10px; height: 10px;
  background: var(--carthena-red);
  margin-right: 0.5rem;
  vertical-align: middle;
}

/* =========== Section head =========== */
.section-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
  align-items: end;
  margin-bottom: 1.5rem;
}
.section-head .title-block .eyebrow { margin-bottom: 0.5rem; }
.section-head h1 .qualifier {
  font-weight: 400;
  color: var(--dark-gray);
}

/* =========== Meta bar =========== */
.meta-bar {
  display: flex;
  gap: 1.1rem;
  align-items: center;
  background: var(--paper);
  border: 1px solid var(--light-gray);
  padding: 0.7rem 1rem;
}
.meta-bar .meta { display: flex; flex-direction: column; line-height: 1.1; }
.meta-bar .meta-label {
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mid-gray);
  margin-bottom: 0.25rem;
  font-weight: 700;
}
.meta-bar .meta-value {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--ink);
}

.timer-value { font-variant-numeric: tabular-nums; }
.timer-value.warning { color: var(--carthena-red); }

.save-indicator {
  font-size: 0.76rem;
  color: var(--dark-gray);
  display: flex; align-items: center; gap: 0.4rem;
}
.save-indicator .dot {
  width: 7px; height: 7px;
  background: var(--carthena-black);
  display: inline-block;
}
.save-indicator.saving .dot { background: var(--carthena-red); animation: pulse 1s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.35; } }

.vrule { width: 1px; height: 26px; background: var(--light-gray); }

/* =========== Progress rail =========== */
.progress-rail {
  margin: 1.5rem 0;
  display: flex;
  gap: 3px;
}
.progress-rail .tick {
  flex: 1;
  height: 3px;
  background: var(--light-gray);
}
.progress-rail .tick.done { background: var(--carthena-black); }
.progress-rail .tick.current { background: var(--carthena-red); }

/* =========== Main workspace =========== */
.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 900px) {
  .workspace { grid-template-columns: 1fr; }
  .section-head { grid-template-columns: 1fr; }
}

/* =========== Question card =========== */
.question-card {
  background: var(--paper);
  border: 1px solid var(--light-gray);
  padding: 2rem 2rem 1.75rem;
  position: relative;
}
.question-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  height: 3px; width: 48px;
  background: var(--carthena-red);
}

.question-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  font-size: 0.74rem;
  color: var(--mid-gray);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}
.question-meta .q-number {
  color: var(--ink);
  letter-spacing: normal;
  text-transform: none;
  font-size: 0.88rem;
  font-weight: 700;
}
.question-meta .q-number strong {
  font-size: 1.2rem;
  color: var(--carthena-black);
  margin-right: 0.2rem;
}
.question-meta .q-tag {
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--charcoal);
  color: var(--ink);
  background: var(--paper);
}

.question-prompt {
  font-size: 1.05rem;
  line-height: 1.5;
  color: var(--ink);
  margin-bottom: 1.5rem;
  user-select: none;
}

/* =========== Options =========== */
.options { display: flex; flex-direction: column; gap: 0.45rem; }

.option {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--light-gray);
  background: var(--paper);
  cursor: pointer;
  transition: all 0.12s ease;
  user-select: none;
}
.option:hover {
  border-color: var(--charcoal);
  background: var(--very-light);
}
.option.selected {
  border-color: var(--carthena-black);
  background: var(--carthena-black);
  color: var(--paper);
}
.option.selected .option-marker {
  background: var(--carthena-red);
  color: var(--paper);
  border-color: var(--carthena-red);
}
.option.selected .option-text { color: var(--paper); }

.option-marker {
  flex: 0 0 26px;
  width: 26px; height: 26px;
  border: 1px solid var(--charcoal);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.82rem;
  transition: all 0.12s ease;
}
.option-text {
  flex: 1;
  font-size: 0.93rem;
  line-height: 1.5;
  color: var(--ink-soft);
  padding-top: 2px;
}

.option input[type="radio"] { position: absolute; opacity: 0; pointer-events: none; }

/* =========== Navigation footer =========== */
.question-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--light-gray);
}

.btn {
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.68rem 1.3rem;
  border: 1px solid var(--carthena-black);
  background: var(--paper);
  color: var(--carthena-black);
  cursor: pointer;
  letter-spacing: 0.02em;
  transition: all 0.12s ease;
}
.btn:hover:not(:disabled) {
  background: var(--carthena-black);
  color: var(--paper);
}
.btn:disabled { opacity: 0.35; cursor: not-allowed; }

.btn-primary {
  background: var(--carthena-red);
  color: var(--paper);
  border-color: var(--carthena-red);
}
.btn-primary:hover:not(:disabled) {
  background: var(--carthena-black);
  border-color: var(--carthena-black);
}

.btn-ghost {
  border-color: var(--light-gray);
  color: var(--dark-gray);
}
.btn-ghost:hover:not(:disabled) {
  background: var(--very-light);
  color: var(--carthena-black);
  border-color: var(--charcoal);
}

/* =========== Sidebar =========== */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: sticky;
  top: 1rem;
}

.panel {
  background: var(--paper);
  border: 1px solid var(--light-gray);
  padding: 1.1rem;
}
.panel h3 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mid-gray);
  font-weight: 700;
  margin-bottom: 0.85rem;
}

.question-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
}
.qbtn {
  aspect-ratio: 1;
  border: 1px solid var(--light-gray);
  background: var(--very-light);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--dark-gray);
  cursor: pointer;
  transition: all 0.12s ease;
  font-family: var(--sans);
}
.qbtn:hover { border-color: var(--carthena-black); }
.qbtn.answered {
  background: var(--carthena-black);
  color: var(--paper);
  border-color: var(--carthena-black);
}
.qbtn.current {
  border: 2px solid var(--carthena-red);
  color: var(--carthena-black);
  background: var(--paper);
}
.qbtn.answered.current {
  background: var(--carthena-black);
  color: var(--carthena-red);
}

.legend {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.85rem;
  font-size: 0.74rem;
  color: var(--dark-gray);
}
.legend-row { display: flex; align-items: center; gap: 0.5rem; }
.legend-swatch { width: 12px; height: 12px; border: 1px solid var(--light-gray); background: var(--very-light); }
.legend-swatch.answered { background: var(--carthena-black); border-color: var(--carthena-black); }
.legend-swatch.current { border: 2px solid var(--carthena-red); background: var(--paper); }

/* =========== Integrity notice =========== */
.integrity {
  font-size: 0.8rem;
  color: var(--dark-gray);
  line-height: 1.5;
}
.integrity strong { color: var(--ink); font-weight: 700; }

.integrity-flag {
  margin-top: 0.75rem;
  padding: 0.55rem 0.7rem;
  background: var(--red-tint);
  border-left: 3px solid var(--carthena-red);
  color: var(--carthena-red);
  font-size: 0.76rem;
  font-weight: 700;
  display: none;
}
.integrity-flag.visible { display: block; }

/* =========== Modal =========== */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}
.modal-backdrop.visible { display: flex; }
.modal {
  background: var(--paper);
  max-width: 480px;
  width: 100%;
  padding: 2rem;
  border-top: 3px solid var(--carthena-red);
}
.modal h2 { margin-bottom: 0.5rem; font-size: 1.1rem; }
.modal p { margin-bottom: 0.5rem; font-size: 0.9rem; }
.modal-actions {
  display: flex;
  gap: 0.6rem;
  justify-content: flex-end;
  margin-top: 1.25rem;
}

/* =========== Completion state =========== */
.completion {
  text-align: center;
  padding: 3.5rem 2rem;
  background: var(--paper);
  border: 1px solid var(--light-gray);
  border-top: 3px solid var(--carthena-red);
}
.completion .eyebrow { margin-bottom: 0.75rem; }
.completion h1 {
  font-family: var(--serif);
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.completion p { max-width: 480px; margin: 0 auto 0.75rem; color: var(--ink-soft); }

.completion-stats {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin: 2rem 0 0.75rem;
  flex-wrap: wrap;
}
.stat .stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--carthena-black);
  display: block;
  line-height: 1;
}
.stat .stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mid-gray);
  margin-top: 0.4rem;
  display: block;
  font-weight: 700;
}

.hidden { display: none !important; }

.question-prompt, .option-text, .disc-cell {
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
}

/* =========== Footer =========== */
.footnote {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--light-gray);
  font-size: 0.7rem;
  color: var(--mid-gray);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.footer-link {
  color: var(--carthena-black);
  text-decoration: none;
  font-weight: 700;
  border-bottom: 1px solid var(--light-gray);
  transition: color 0.12s ease, border-color 0.12s ease;
}
.footer-link:hover {
  color: var(--carthena-red);
  border-bottom-color: var(--carthena-red);
}

/* =========== Login page =========== */
.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}
.login-card {
  background: var(--paper);
  border: 1px solid var(--light-gray);
  max-width: 440px;
  width: 100%;
  padding: 2.5rem;
  border-top: 3px solid var(--carthena-red);
}
.login-card .wordmark { font-size: 1.2rem; margin-bottom: 0.3rem; }
.login-card .brand-descriptor { margin-bottom: 2rem; display: block; }
.login-card h1 {
  font-family: var(--serif);
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
  font-weight: 700;
}
.login-card p.lead { font-size: 0.9rem; color: var(--dark-gray); margin-bottom: 1.75rem; }

.field { margin-bottom: 1rem; }
.field label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--mid-gray);
  margin-bottom: 0.4rem;
}
.field input {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--light-gray);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 0.94rem;
  color: var(--ink);
}
.field input:focus {
  outline: none;
  border-color: var(--carthena-black);
}
.field .error-msg {
  color: var(--carthena-red);
  font-size: 0.76rem;
  margin-top: 0.35rem;
  display: none;
}
.field.has-error input { border-color: var(--carthena-red); }
.field.has-error .error-msg { display: block; }

.btn-full { width: 100%; padding: 0.85rem; }

.login-meta {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--light-gray);
  font-size: 0.75rem;
  color: var(--dark-gray);
  line-height: 1.5;
}

/* =========== Powered-by banner (Commit 3) =========== */
.powered-by-banner {
  text-align: center;
  font-size: 0.75rem;
  color: var(--mid-gray);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--light-gray);
}
.powered-by-banner strong {
  color: var(--carthena-black);
  letter-spacing: normal;
  text-transform: none;
}

/* =========== Client header (login / welcome) =========== */
.client-header {
  margin-bottom: 1.5rem;
}
.client-header h1 {
  font-family: var(--serif);
  font-size: 1.75rem;
  color: var(--carthena-black);
  margin: 0 0 0.25rem 0;
  font-weight: 700;
}
.client-header .client-subtitle {
  font-size: 1rem;
  color: var(--ink-soft);
  margin: 0;
}

/* =========== Client pill (assessment header) =========== */
.client-pill {
  display: inline-block;
  padding: 0.35rem 0.7rem;
  margin-left: 0.5rem;
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--very-light);
  border: 1px solid var(--light-gray);
  border-radius: 2px;
  font-weight: 700;
}
.client-pill:empty { display: none; }