/* ══════════════════════════════════════════
   AI Safety Careers — AMS-inspired theme
   Primary: #A1CEEC
   Palette: deep navy, sky blue, warm coral
   Font:    DM Sans
   ══════════════════════════════════════════ */

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --sky:        #A1CEEC;
  --sky-light:  #D4E9F7;
  --sky-wash:   #EEF5FB;
  --navy:       #132B45;
  --navy-mid:   #1E3F60;
  --slate:      #4A6A82;
  --muted:      #7B9BB0;
  --coral:      #E87461;
  --coral-hover:#D5614F;
  --teal:       #5AB8A6;
  --teal-hover: #4AA896;
  --bg:         #F4F8FB;
  --card:       #ffffff;
  --border:     #D1E3EF;
  --border-light:#E4EEF5;
  --radius:     16px;
  --radius-sm:  10px;
  --shadow:     0 2px 6px rgba(19,43,69,.06), 0 12px 32px rgba(19,43,69,.05);
  --shadow-sm:  0 1px 3px rgba(19,43,69,.06);
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--navy);
  min-height: 100vh;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Header ── */
header {
  background: linear-gradient(135deg, #0b1d30 0%, var(--navy) 50%, var(--navy-mid) 100%);
  color: white;
  padding: 1.75rem 2rem;
  position: relative;
  overflow: hidden;
}

/* Header stars */
.header-star {
  position: absolute;
  pointer-events: none;
  animation: headerTwinkle 4s ease-in-out infinite alternate;
}
.hs-1 { left: 8%;  top: 20%; color: rgba(161,206,236,.45); font-size: .9rem;  animation-delay: 0s; }
.hs-2 { left: 30%; top: 60%; color: rgba(232,116,97,.35);  font-size: .65rem; animation-delay: 1.5s; }
.hs-3 { left: 55%; top: 25%; color: rgba(90,184,166,.4);   font-size: .75rem; animation-delay: .8s; }
.hs-4 { left: 75%; top: 55%; color: rgba(161,206,236,.35); font-size: .85rem; animation-delay: 2.2s; }
.hs-5 { left: 92%; top: 30%; color: rgba(232,116,97,.3);   font-size: .6rem;  animation-delay: 3s; }
.hs-6 { left: 45%; top: 70%; color: rgba(212,233,247,.35); font-size: .7rem;  animation-delay: 1s; }

@keyframes headerTwinkle {
  0%   { opacity: .2; transform: scale(.6) rotate(0deg); }
  50%  { opacity: 1;  transform: scale(1.15) rotate(20deg); }
  100% { opacity: .3; transform: scale(.7) rotate(-10deg); }
}

/* Accent stripe at bottom */
header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--coral), var(--sky) 40%, var(--teal) 70%, var(--sky));
}

.header-inner {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  position: relative;
  z-index: 1;
  padding-left: 2.75rem;
}
.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -.03em;
  display: flex;
  align-items: center;
  gap: .4rem;
}
.logo-star {
  color: var(--sky);
  font-size: 1.1rem;
}
.tagline {
  font-size: .8125rem;
  font-weight: 400;
  opacity: .55;
  letter-spacing: .01em;
}

/* ── Progress Nav ── */
.progress-nav {
  background: var(--card);
  border-bottom: 1px solid var(--border-light);
  padding: 1.5rem 2rem;
}
.progress-inner {
  max-width: 540px;
  margin: 0 auto;
  display: flex;
  align-items: center;
}
.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
  opacity: .35;
  transition: opacity .3s;
  min-width: 85px;
}
.step.active { opacity: 1; }
.step.done   { opacity: .7; cursor: pointer; }
.step-circle {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--border);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .8125rem; color: white;
  transition: background .3s, box-shadow .3s;
}
.step.active .step-circle {
  background: var(--sky);
  color: var(--navy);
  box-shadow: 0 0 0 4px rgba(161,206,236,.3);
}
.step.done .step-circle { background: var(--teal); }
.step span {
  font-size: .6875rem;
  font-weight: 600;
  color: var(--slate);
  text-transform: uppercase;
  letter-spacing: .07em;
}
.connector {
  flex: 1;
  height: 2px;
  background: var(--border-light);
  margin-bottom: 1.125rem;
}

/* ── Main Layout ── */
main {
  max-width: 880px;
  margin: 2.5rem auto;
  padding: 0 1.25rem 5rem;
}
.section { display: none; }
.section.active { display: block; animation: fadeUp .4s ease; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Card ── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 3rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
}
h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: .75rem;
  line-height: 1.2;
  letter-spacing: -.03em;
}
h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: .75rem;
  letter-spacing: -.02em;
}
.lead {
  color: var(--muted);
  font-size: 1rem;
  margin-bottom: 2.25rem;
  line-height: 1.7;
  max-width: 600px;
}

/* ── Upload Area ── */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 3.5rem 2rem;
  text-align: center;
  background: var(--sky-wash);
  transition: border-color .25s, background .25s, transform .2s;
  cursor: default;
}
.upload-area:hover {
  border-color: var(--sky);
}
.upload-area.dragover {
  border-color: var(--sky);
  background: var(--sky-light);
  transform: scale(1.005);
}
.upload-area p { color: var(--slate); margin-bottom: 1.125rem; }
.upload-icon { font-size: 2.75rem; margin-bottom: 1.125rem; }
.upload-note { font-size: .75rem; color: var(--muted); margin-top: .875rem; margin-bottom: 0; }
.privacy-note {
  margin-top: 1.5rem;
  font-size: .75rem;
  color: var(--muted);
  line-height: 1.65;
  text-align: center;
}
.privacy-note a {
  color: var(--slate);
  text-decoration: underline;
  text-underline-offset: 2px;
}
input[type="file"] { display: none; }

/* ── Alerts ── */
.alert {
  margin-top: 1.25rem;
  padding: 1rem 1.125rem;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  display: flex;
  align-items: center;
  gap: .75rem;
}
.alert.loading { background: var(--sky-wash); color: var(--navy-mid); border: 1px solid var(--sky-light); }
.alert.error   { background: #fef2f0; color: #b9432f; border: 1px solid #f8d5cf; }
.hidden { display: none !important; }

/* ── Classification Box ── */
.classification-box {
  background: var(--sky-wash);
  border: 1px solid var(--sky-light);
  border-radius: var(--radius-sm);
  padding: 1.5rem 1.75rem;
  margin-bottom: 2.25rem;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: var(--navy);
  color: white;
  border-radius: 9999px;
  padding: .35rem 1rem;
  font-size: .8125rem;
  font-weight: 600;
  text-transform: capitalize;
  margin-bottom: .875rem;
  letter-spacing: .01em;
}
.classification-reasoning {
  color: var(--slate);
  font-size: .875rem;
  line-height: 1.65;
  margin-bottom: .875rem;
}
.factors-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}
.factors-list li {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--navy-mid);
  border-radius: 6px;
  padding: .3rem .7rem;
  font-size: .75rem;
  font-weight: 500;
}

/* ── Questions ── */
.question-group { margin-bottom: 2.25rem; }
.question-label {
  display: block;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 1rem;
  font-size: .9375rem;
  line-height: 1.55;
}
.q-num { color: var(--coral); font-weight: 700; }

/* Scale options */
.scale-options { display: flex; flex-direction: column; gap: .45rem; }
.scale-option { position: relative; }
.scale-option input[type="radio"],
.scale-option input[type="checkbox"] { position: absolute; opacity: 0; width: 0; height: 0; }
.scale-option label {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .75rem 1.125rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: .875rem;
  color: var(--slate);
  background: var(--card);
  transition: all .2s ease;
}
.scale-option label:hover {
  border-color: var(--sky);
  background: var(--sky-wash);
  color: var(--navy);
}
.scale-option input:checked + label {
  border-color: var(--sky);
  background: var(--sky-wash);
  color: var(--navy);
  font-weight: 600;
  box-shadow: 0 0 0 3px rgba(161,206,236,.2);
}
.scale-option input[type="radio"]:checked + label::after,
.scale-option input[type="checkbox"]:checked + label::after {
  content: '\2713';
  margin-left: auto;
  color: var(--teal);
  font-weight: 700;
}

/* Text areas */
.text-answer {
  width: 100%;
  padding: .875rem 1.125rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .9375rem;
  font-family: inherit;
  resize: vertical;
  min-height: 100px;
  color: var(--navy);
  transition: border-color .2s, box-shadow .2s;
  background: var(--card);
}
.text-answer::placeholder { color: var(--muted); }
.text-answer:focus {
  outline: none;
  border-color: var(--sky);
  box-shadow: 0 0 0 4px rgba(161,206,236,.2);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-size: .9375rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all .2s ease;
  letter-spacing: .01em;
}
.btn-primary {
  background: var(--coral);
  color: white;
}
.btn-primary:hover {
  background: var(--coral-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(232,116,97,.3);
}
.btn-primary:active { transform: translateY(0); }
.btn-teal {
  background: var(--teal);
  color: white;
}
.btn-teal:hover {
  background: var(--teal-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(90,184,166,.3);
}
.btn-teal:active { transform: translateY(0); }
.btn-outline {
  background: transparent;
  color: var(--slate);
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  background: var(--sky-wash);
  border-color: var(--sky);
  color: var(--navy);
}
.btn-back {
  background: transparent;
  color: var(--muted);
  padding: .75rem 1rem;
  font-size: .875rem;
}
.btn-back:hover {
  color: var(--navy);
  background: var(--sky-wash);
}
.btn-full { width: 100%; padding: 1rem 2rem; font-size: 1rem; }
.form-footer { margin-top: 2.5rem; }
.form-footer-row {
  display: flex;
  align-items: center;
  gap: .75rem;
}
.form-footer-row .btn-full { flex: 1; }

/* ── Stars loading animation ── */
.spinner-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 3rem 0 2.5rem;
  gap: 1.5rem;
}
.spinner-caption {
  color: var(--slate);
  font-size: .9375rem;
  text-align: center;
  line-height: 1.6;
  font-style: italic;
  transition: opacity .3s ease;
}

.stars-field {
  position: relative;
  width: 120px;
  height: 120px;
}
.star {
  position: absolute;
  font-size: 1rem;
  animation: starFloat 3s ease-in-out infinite, starTwinkle 1.5s ease-in-out infinite alternate;
}
.star-1 { left: 50%; top: 10%;  color: var(--sky);   font-size: 1.4rem; animation-delay: 0s, 0s; }
.star-2 { left: 15%; top: 30%;  color: var(--coral);  font-size: .9rem;  animation-delay: .4s, .3s; }
.star-3 { left: 80%; top: 25%;  color: var(--teal);   font-size: 1.1rem; animation-delay: .8s, .6s; }
.star-4 { left: 35%; top: 55%;  color: var(--sky);    font-size: .75rem; animation-delay: 1.2s, .2s; }
.star-5 { left: 70%; top: 60%;  color: var(--coral);  font-size: 1.2rem; animation-delay: .6s, .8s; }
.star-6 { left: 50%; top: 80%;  color: var(--teal);   font-size: .85rem; animation-delay: 1s, .5s; }
.star-7 { left: 20%; top: 75%;  color: var(--sky);    font-size: 1rem;   animation-delay: 1.6s, .1s; }

@keyframes starFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25%      { transform: translateY(-8px) rotate(30deg); }
  50%      { transform: translateY(2px) rotate(-15deg); }
  75%      { transform: translateY(-5px) rotate(20deg); }
}
@keyframes starTwinkle {
  from { opacity: .35; transform: scale(.7); }
  to   { opacity: 1;   transform: scale(1.1); }
}

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

/* Inline button spinner */
.btn-spinner {
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: white;
  border-radius: 50%;
  animation: spin .6s linear infinite;
}

/* ── Recommendations content ── */
.reco-content {
  line-height: 1.8;
  color: var(--navy);
  white-space: pre-wrap;
}
.reco-content.rendered { white-space: normal; }
.reco-content h1, .reco-content h2, .reco-content h3 {
  color: var(--navy);
  margin: 1.5rem 0 .5rem;
  font-size: 1rem;
  font-weight: 700;
}
.reco-content p  { margin-bottom: .875rem; }
.reco-content strong { color: var(--navy-mid); }
.reco-content ol, .reco-content ul { padding-left: 1.5rem; }
.reco-content li { margin-bottom: .875rem; }
.reco-footer {
  margin-top: 2.25rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border-light);
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
}

/* ── Accordion ── */
.accordion-item {
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: .625rem;
  overflow: hidden;
  transition: border-color .25s, box-shadow .25s;
}
.accordion-item:hover {
  border-color: var(--sky);
}
.accordion-item.open {
  border-color: var(--sky);
  box-shadow: 0 0 0 3px rgba(161,206,236,.15);
}

.accordion-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.125rem 1.5rem;
  background: var(--card);
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: background .2s;
}
.accordion-toggle:hover { background: var(--sky-wash); }
.accordion-item.open .accordion-toggle { background: var(--sky-wash); }

.accordion-title {
  font-weight: 700;
  font-size: .9375rem;
  color: var(--navy);
}
.accordion-chevron {
  font-size: 1rem;
  color: var(--muted);
  transition: transform .3s ease;
}
.accordion-item.open .accordion-chevron { transform: rotate(180deg); color: var(--navy); }

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
  padding: 0 1.5rem;
  color: var(--slate);
  font-size: .875rem;
  line-height: 1.75;
}
.accordion-item.open .accordion-body {
  max-height: 800px;
  padding: .75rem 1.5rem 1.5rem;
}
.accordion-body p { margin-bottom: .625rem; }
.accordion-body strong { color: var(--navy-mid); }

/* ── Follow-up Chat ── */
.followup-section {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-light);
}
.followup-section h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 1rem;
}
.followup-thread {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  max-height: 400px;
  overflow-y: auto;
  margin-bottom: 1rem;
  padding-right: .25rem;
}
.followup-msg {
  padding: .875rem 1.125rem;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  line-height: 1.7;
  max-width: 85%;
  animation: fadeUp .3s ease;
}
.followup-user {
  align-self: flex-end;
  background: var(--navy);
  color: white;
  border-bottom-right-radius: 3px;
}
.followup-asst {
  align-self: flex-start;
  background: var(--sky-wash);
  color: var(--navy);
  border: 1px solid var(--sky-light);
  border-bottom-left-radius: 3px;
}
.followup-asst p { margin-bottom: .5rem; }
.followup-asst p:last-child { margin-bottom: 0; }
.followup-asst strong { color: var(--navy-mid); }
.followup-form {
  display: flex;
  gap: .75rem;
  align-items: flex-end;
}
.followup-input {
  flex: 1;
  min-height: unset;
  resize: none;
}
.followup-btn {
  flex-shrink: 0;
  padding: .75rem 1.5rem;
}
.followup-btn:disabled {
  opacity: .5;
  cursor: not-allowed;
}

/* ── Mobile ── */
@media (max-width: 600px) {
  .card       { padding: 1.75rem; }
  h1          { font-size: 1.5rem; }
  .step span  { display: none; }
  .step       { min-width: 40px; }
  .header-inner { flex-direction: column; gap: .25rem; text-align: center; }
}