/* ========================================
   DIAGNOSTICO PAGE — Quiz for AI for Product Designers
   Light theme using portfolio home tokens (--color-bg, --color-text-primary).
   Material 3 components (md-radio, md-checkbox, md-outlined-text-field,
   md-filled-button, md-text-button, md-circular-progress) are scoped
   under .diag.md-scope and themed for white surface + copper accent.
   ======================================== */

.diag {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ========================================
   MATERIAL 3 TOKENS (light theme + copper accent)
   ======================================== */

.diag.md-scope {
  /* Typography (Mirego inheritance: Space Grotesk brand + Inter plain) */
  --md-ref-typeface-brand: 'Space Grotesk', system-ui, sans-serif;
  --md-ref-typeface-plain: 'Inter', system-ui, sans-serif;

  /* Color scheme: white surface, copper primary */
  --md-sys-color-primary: var(--color-text-primary);
  --md-sys-color-on-primary: var(--color-bg-dark);
  --md-sys-color-on-surface: var(--color-text-primary);
  --md-sys-color-on-surface-variant: var(--color-text-muted);
  --md-sys-color-outline: rgba(0, 0, 0, 0.18);
  --md-sys-color-outline-variant: rgba(0, 0, 0, 0.10);
  --md-sys-color-surface: transparent;
  --md-sys-color-surface-container-highest: rgba(0, 0, 0, 0.04);
  --md-sys-color-error: var(--color-error);
  --md-sys-color-on-error: var(--color-bg);

  /* Component-specific overrides */
  --md-filled-button-container-color: var(--color-text-primary);
  --md-filled-button-label-text-color: var(--color-bg);
  --md-filled-button-disabled-container-color: rgba(5, 3, 7, 0.35);
  --md-filled-button-disabled-label-text-color: rgba(255, 255, 255, 0.85);
  --md-filled-button-leading-space: 24px;
  --md-filled-button-trailing-space: 24px;
  --md-filled-button-with-leading-icon-leading-space: 16px;
  --md-filled-button-with-trailing-icon-trailing-space: 16px;
  --md-text-button-leading-space: 12px;
  --md-text-button-trailing-space: 12px;

  --md-text-button-label-text-color: var(--color-text-muted);
  --md-text-button-hover-label-text-color: var(--color-text-primary);
  --md-text-button-pressed-label-text-color: var(--color-text-primary);

  --md-radio-icon-color: rgba(0, 0, 0, 0.4);
  --md-radio-hover-icon-color: rgba(0, 0, 0, 0.6);
  --md-radio-selected-icon-color: var(--color-text-primary);
  --md-radio-selected-hover-icon-color: var(--color-text-primary);
  --md-radio-selected-pressed-icon-color: var(--color-text-primary);

  --md-checkbox-outline-color: rgba(0, 0, 0, 0.4);
  --md-checkbox-hover-outline-color: rgba(0, 0, 0, 0.6);
  --md-checkbox-selected-container-color: var(--color-text-primary);
  --md-checkbox-selected-icon-color: var(--color-bg);
  --md-checkbox-selected-hover-container-color: var(--color-text-primary);

  --md-outlined-text-field-input-text-color: var(--color-text-primary);
  --md-outlined-text-field-label-text-color: var(--color-text-muted);
  --md-outlined-text-field-hover-label-text-color: var(--color-text-primary);
  --md-outlined-text-field-focus-label-text-color: var(--color-text-primary);
  --md-outlined-text-field-outline-color: rgba(0, 0, 0, 0.18);
  --md-outlined-text-field-hover-outline-color: rgba(0, 0, 0, 0.35);
  --md-outlined-text-field-focus-outline-color: var(--color-text-primary);
  --md-outlined-text-field-input-text-placeholder-color: #93908b;
  --md-outlined-text-field-caret-color: var(--color-text-primary);

  --md-circular-progress-active-indicator-color: var(--color-text-primary);
}

/* ========================================
   PROGRESS BAR
   ======================================== */

.diag__progress {
  position: sticky;
  top: 1rem;
  padding: 1rem 0;
  background-color: var(--color-bg);
  z-index: 5;
}

.diag__progress-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.625rem;
  font-family: var(--font-body);
  font-size: var(--text-caption);
  font-weight: var(--weight-bold);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-caption);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.diag__progress-step {
  color: var(--color-text-primary);
}

.diag__progress-bar {
  height: 3px;
  width: 100%;
  background-color: rgba(0, 0, 0, 0.08);
  border-radius: 999px;
  overflow: hidden;
}

.diag__progress-fill {
  width: 0;
  height: 100%;
  background-color: var(--color-text-primary);
  border-radius: 999px;
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ========================================
   STEP TRANSITIONS
   ======================================== */

.diag__step {
  min-height: 100svh;
  padding: 3rem 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  opacity: 1;
  transition: opacity 0.25s ease;
}

.diag__step[hidden] {
  display: none;
}

.diag__step.is-leaving {
  opacity: 0;
}

.diag__step.is-entering {
  opacity: 0;
  transform: translateY(8px);
  animation: diagEnter 0.35s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes diagEnter {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

.diag__eyebrow {
  display: block;
  margin-bottom: 1rem;
  font-family: var(--font-body);
  font-size: var(--text-caption);
  font-weight: var(--weight-bold);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-caption);
  text-transform: uppercase;
  color: var(--color-text-primary);
}

.diag__headline {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--color-text-primary);
  margin: 0 0 1rem;
}

.diag__question {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3.5vw, 1.875rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.5px;
  color: var(--color-text-primary);
  margin: 0 0 1.5rem;
}

.diag__subhead {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin: 0 0 2rem;
}

.diag__body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin: 0 0 1.5rem;
}

.diag__hint {
  display: block;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

/* ========================================
   OPTIONS (md-radio + md-checkbox inside labels)
   ======================================== */

.diag__options {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin: 0 0 2rem;
  list-style: none;
  padding: 0;
}

.diag__options--grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.625rem;
}

.diag__options--grid .diag__option {
  display: flex;
}

.diag__options--grid .diag__option-label {
  width: 100%;
  height: 100%;
  min-height: 4rem;
}

.diag__options--grid .diag__option--full {
  grid-column: 1 / -1;
}

.diag__option {
  position: relative;
}

/* The label wraps the Material radio/checkbox + text. Acts as a clickable
   row with border that highlights when the inner control is checked. */
.diag__option-label {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1rem 1.25rem;
  border: 1px solid rgba(0, 0, 0, 0.10);
  border-radius: 1rem;
  background-color: transparent;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.45;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.diag__option-label:hover {
  background-color: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.18);
}

.diag__option-label:has(md-radio[checked]),
.diag__option-label:has(md-checkbox[checked]) {
  background-color: rgba(0, 0, 0, 0.06);
  border-color: var(--color-text-primary);
}

.diag__option-input {
  flex-shrink: 0;
}

/* ========================================
   FORM FIELDS (md-outlined-text-field)
   ======================================== */

.diag__form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.diag__field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.diag__input {
  width: 100%;
}

.diag__error {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--color-error);
  margin: 0;
  min-height: 1rem;
}

/* ========================================
   ACTIONS (next, back, submit)
   ======================================== */

.diag__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.5rem;
}

.diag__actions md-filled-button,
.diag__actions md-text-button {
  --md-filled-button-container-shape: 999px;
  --md-text-button-container-shape: 999px;
}

.diag__actions md-filled-button {
  min-width: 7rem;
}

.diag md-filled-button svg[slot="icon"],
.diag md-text-button svg[slot="icon"] {
  width: 18px;
  height: 18px;
}

/* Submit button + spinner sibling layout */
.diag__submit-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.diag__submit-spinner {
  display: none;
  --md-circular-progress-size: 24px;
}

.diag__submit-wrap md-filled-button.is-loading + .diag__submit-spinner {
  display: inline-flex;
}

/* ========================================
   INTRO + THANKS
   ======================================== */

.diag__intro,
.diag__thanks {
  text-align: left;
  padding: 2.5rem 0;
}

.diag__intro-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin: 0 0 var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--text-caption);
  font-weight: var(--weight-bold);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-caption);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.diag__intro-meta-item::before {
  content: '·';
  color: var(--color-text-primary);
  margin-right: 0.625rem;
}

.diag__intro-meta-item:first-child::before {
  display: none;
}

.diag__thanks-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  text-decoration: underline;
  text-decoration-color: rgba(0, 0, 0, 0.35);
  text-underline-offset: 3px;
}

.diag__thanks-link:hover {
  text-decoration-color: var(--color-text-primary);
}

.diag__thanks-link svg {
  width: 16px;
  height: 16px;
}

/* ========================================
   SUBMIT ERROR
   ======================================== */

.diag__submit-error {
  margin: 0 0 1.25rem;
  padding: 1rem 1.125rem;
  background-color: rgba(217, 119, 87, 0.08);
  border: 1px solid rgba(217, 119, 87, 0.4);
  border-radius: 0.625rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: #b85a3a;
}

.diag__submit-error[hidden] {
  display: none;
}

/* ========================================
   RESULT (archetype reveal)
   ======================================== */

.diag__result {
  text-align: left;
  padding: 2.5rem 0;
}

.diag__result .diag__headline {
  margin-bottom: 1.5rem;
}

.diag__result-body {
  margin: 0 0 2rem;
  max-width: 60ch;
}

.diag__result-body p {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text-primary);
  margin: 0 0 1.25rem;
}

.diag__result-body p:last-child {
  margin-bottom: 0;
}

.diag__result-modifier {
  margin: 0 0 2rem;
  padding: 1rem 1.125rem;
  background-color: rgba(0, 0, 0, 0.04);
  border-left: 2px solid var(--color-text-primary);
  border-radius: 0 0.5rem 0.5rem 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  max-width: 60ch;
}

.diag__result-modifier[hidden] {
  display: none;
}

.diag__result-cta {
  margin: 0 0 2rem;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 640px) {
  .diag {
    padding: 0 1.25rem;
  }

  .diag__options--grid {
    grid-template-columns: 1fr;
  }

  .diag__step {
    padding: 2rem 0;
  }

  .diag__intro,
  .diag__thanks,
  .diag__result {
    padding: 1.5rem 0;
  }

  .diag__actions {
    flex-direction: column-reverse;
    align-items: stretch;
  }

  .diag__actions md-filled-button,
  .diag__actions md-text-button {
    width: 100%;
  }

  .diag__submit-wrap {
    width: 100%;
    justify-content: center;
  }

  .diag__intro-meta-item::before {
    display: none;
  }

  .diag__intro-meta {
    gap: 0.5rem;
    flex-direction: column;
  }
}

/* ========================================
   RESULT AXES (ejes bipolares estilo 16personalities)
   ======================================== */

.diag__result-pct {
  display: inline-block;
  margin-left: 0.5rem;
  font-size: 0.65em;
  font-weight: 700;
  color: var(--color-accent, #c4956e);
  vertical-align: middle;
}

.diag__axes {
  margin: 2rem 0;
  padding: 1.5rem;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 0.75rem;
  background: rgba(0, 0, 0, 0.02);
}

.diag__axes-eyebrow {
  display: block;
  margin-bottom: 1.25rem;
}

.diag__axes-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.diag__axis {
  font-family: var(--font-body);
}

.diag__axis-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.625rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.diag__axis-label {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.diag__axis-dominant {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text-primary);
  font-variant-numeric: tabular-nums;
}

.diag__axis-bar {
  position: relative;
  height: 10px;
  background: rgba(0, 0, 0, 0.06);
  border-radius: 5px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.diag__axis-bar-fill {
  position: absolute;
  top: 0;
  height: 100%;
  background: var(--color-accent, #c4956e);
  border-radius: 5px;
  transition: width 0.6s ease-out;
}

.diag__axis-bar-fill--right {
  left: 50%;
}

.diag__axis-bar-fill--left {
  right: 50%;
}

.diag__axis-bar-mid {
  position: absolute;
  left: 50%;
  top: -2px;
  bottom: -2px;
  width: 1px;
  background: rgba(0, 0, 0, 0.25);
  transform: translateX(-50%);
}

.diag__axis-poles {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ========================================
   SHARE BUTTONS
   ======================================== */

.diag__share {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.diag__share-eyebrow {
  display: block;
  margin-bottom: 1rem;
}

.diag__share-buttons {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.diag__share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-primary);
  background: transparent;
  border: 1px solid rgba(0, 0, 0, 0.18);
  border-radius: 0.5rem;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.diag__share-btn:hover {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.32);
}

.diag__share-btn:focus-visible {
  outline: 2px solid var(--color-accent, #c4956e);
  outline-offset: 2px;
}

.diag__share-btn i {
  width: 18px;
  height: 18px;
}

.diag__share-hint {
  margin-top: 0.875rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-text-muted);
  padding: 0.75rem 1rem;
  background: rgba(196, 149, 110, 0.08);
  border-left: 3px solid var(--color-accent, #c4956e);
  border-radius: 0 0.375rem 0.375rem 0;
}