:root {
  --ct-orange: #ff6633;
  --ct-black: #111111;
  --ct-charcoal: #2b2b2b;
  --ct-gray-100: #f5f6f7;
  --ct-gray-200: #e7e9ed;
  --ct-gray-300: #d9dde3;
  --ct-gray-700: #59616f;
  --ct-white: #ffffff;
  --ct-blue: #0f5f8f;
  --ct-green: #477a4f;
  --shadow-soft: 0 18px 45px rgba(17, 17, 17, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--ct-gray-100);
  color: var(--ct-black);
  font-family: "Whitney A", "Whitney B", Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  min-height: 44px;
}

.app-header {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  align-items: center;
  min-height: 92px;
  padding: 0 clamp(18px, 4vw, 56px);
  background: rgba(0, 0, 0, 0.86);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--ct-white);
}

.brand-lockup {
  display: flex;
  align-items: center;
  min-width: 0;
  border: 0;
  background: none;
  padding: 0;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.brand-lockup:hover,
.brand-lockup:focus-visible {
  opacity: 0.8;
}

.brand-logo {
  display: block;
  width: 135px;
  height: auto;
}

.brand-logo-fallback {
  color: var(--ct-white);
  font-size: 1.35rem;
  font-weight: 700;
  font-style: italic;
}

.header-copy {
  min-width: 0;
}

.app-header h1,
h2,
h3,
p {
  margin-top: 0;
}

.app-header h1 {
  margin-bottom: 0;
  font-size: clamp(1.25rem, 2.2vw, 1.8rem);
}

main {
  width: min(1180px, calc(100% - 32px));
  margin: 30px auto 56px;
}

.screen {
  display: none;
}

.screen.active {
  display: block;
}

.hero-panel,
.card,
.dialogue-panel,
.coach-panel {
  background: var(--ct-white);
  border: 1px solid var(--ct-gray-200);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.6fr);
  gap: clamp(18px, 4vw, 44px);
  align-items: end;
  min-height: clamp(560px, 70vh, 780px);
  padding: clamp(28px, 6vw, 72px);
  border: 0;
  color: var(--ct-white);
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.86) 0%, rgba(0, 0, 0, 0.62) 43%, rgba(0, 0, 0, 0.2) 100%),
    url("assets/chemtrend-site/hero-desktop.jpg") center / cover no-repeat;
}

.hero-panel h2 {
  max-width: 780px;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.05;
  margin-bottom: 18px;
}

.purpose-statement {
  max-width: 760px;
  font-weight: 700;
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  margin-bottom: 14px;
}

.lead {
  max-width: 760px;
  color: var(--ct-gray-700);
  font-size: 1.08rem;
}

.hero-panel .lead {
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
}

.lead.compact {
  font-size: 1rem;
  margin-bottom: 20px;
}

.stage-purpose {
  margin-bottom: 8px;
  border-left: 5px solid var(--ct-orange);
  background: #fff8f5;
  padding: 12px 14px;
  color: var(--ct-charcoal);
  font-weight: 700;
}

.stage-learning-objective {
  margin-bottom: 18px;
  color: var(--ct-gray-700);
}

.eyebrow {
  margin-bottom: 8px;
  color: var(--ct-orange);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

.notice-card {
  border-left: 5px solid var(--ct-orange);
  padding: 22px;
  background: rgba(0, 0, 0, 0.72);
  color: var(--ct-white);
  border-radius: 8px;
  backdrop-filter: blur(6px);
}

.site-media-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 1px;
  background: var(--ct-black);
}

.media-tile {
  position: relative;
  min-height: 190px;
  margin: 0;
  overflow: hidden;
  background: var(--ct-black);
}

.media-tile img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 190px;
  object-fit: cover;
  opacity: 0.86;
}

.media-tile figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  padding: 13px 16px;
  color: var(--ct-white);
  background: rgba(0, 0, 0, 0.72);
  border-top: 4px solid var(--ct-orange);
  font-weight: 700;
}

.section-heading {
  margin-bottom: 20px;
}

.section-heading h2 {
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  margin-bottom: 8px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 20px;
}

.primary-button,
.secondary-button,
.ghost-button {
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 700;
  padding: 10px 16px;
}

.primary-button {
  background: var(--ct-orange);
  color: var(--ct-white);
}

.secondary-button {
  background: var(--ct-black);
  color: var(--ct-white);
}

.ghost-button {
  background: var(--ct-white);
  border-color: var(--ct-gray-300);
  color: var(--ct-black);
}

.app-header .ghost-button {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.45);
  color: var(--ct-white);
}

.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover {
  filter: brightness(0.96);
}

.primary-button:disabled,
.secondary-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.setup-grid,
.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.setup-grid {
  padding: 24px;
  background: var(--ct-white);
  border: 1px solid var(--ct-gray-200);
  border-radius: 8px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--ct-charcoal);
  font-weight: 700;
}

select,
input,
textarea {
  width: 100%;
  border: 1px solid var(--ct-gray-300);
  border-radius: 6px;
  background: var(--ct-white);
  color: var(--ct-black);
  padding: 11px 12px;
}

textarea {
  resize: vertical;
}

.card {
  padding: 22px;
}

.how-it-works {
  margin: 24px 0;
}

.card h3,
.coach-panel h3 {
  margin-bottom: 10px;
}

.panel-heading-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 10px;
}

.panel-heading-row h3 {
  margin-bottom: 0;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag {
  border: 1px solid var(--ct-gray-300);
  border-radius: 999px;
  color: var(--ct-charcoal);
  padding: 5px 10px;
  font-size: 0.86rem;
  font-weight: 700;
}

.meta-line,
.status-line {
  color: var(--ct-gray-700);
  min-height: 24px;
}

.simulation-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
  gap: 18px;
  align-items: start;
}

.dialogue-panel,
.coach-panel {
  padding: 24px;
}

.progress-block {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--ct-gray-700);
  font-weight: 700;
}

.progress-track {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--ct-gray-200);
}

#progressFill {
  width: 0%;
  height: 100%;
  background: var(--ct-orange);
  transition: width 160ms ease;
}

.question-options {
  display: grid;
  gap: 10px;
}

.question-option {
  width: 100%;
  min-height: 64px;
  border: 1px solid var(--ct-gray-300);
  border-left: 5px solid var(--ct-orange);
  border-radius: 8px;
  background: var(--ct-white);
  color: var(--ct-black);
  cursor: pointer;
  padding: 14px 16px;
  text-align: left;
}

.question-option:hover,
.question-option.selected {
  background: #fff8f5;
}

.free-text-box {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--ct-gray-200);
}

.dialogue-bubble {
  margin-bottom: 18px;
  border-radius: 8px;
  padding: 14px 15px;
}

.dialogue-bubble.candidate {
  background: #f4f8fb;
  border-left: 5px solid var(--ct-blue);
}

.dialogue-bubble.coach {
  background: #f6faf6;
  border-left: 5px solid var(--ct-green);
}

.coaching-card {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
  border-left: 5px solid var(--ct-green);
  border-radius: 8px;
  background: #f6faf6;
  padding: 14px 15px;
}

.tltr-row {
  border: 1px solid #c8dfca;
  border-left: 5px solid var(--ct-green);
  border-radius: 6px;
  background: var(--ct-white);
  padding: 10px 12px;
}

.tltr-row p {
  color: var(--ct-black);
  font-weight: 700;
}

.coaching-row {
  display: grid;
  gap: 5px;
}

.coaching-row p {
  margin-bottom: 0;
}

.quality-row {
  grid-template-columns: 1fr auto;
  align-items: center;
}

.coaching-label {
  color: var(--ct-gray-700);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

.quality-badge,
.history-quality {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  border-radius: 999px;
  padding: 4px 10px;
  background: var(--ct-gray-200);
  color: var(--ct-charcoal);
  font-size: 0.8rem;
  font-weight: 700;
}

.quality-badge.strong {
  background: #e7f1e8;
  color: #315b38;
}

.quality-badge.acceptable {
  background: #e7f0f5;
  color: #0f4f76;
}

.quality-badge.weak {
  background: #fff0e8;
  color: #9a3f1f;
}

.quality-badge.not-scored-live {
  background: var(--ct-gray-200);
  color: var(--ct-charcoal);
}

.signal-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.better-question {
  border: 1px solid #f2c0a8;
  border-left: 5px solid var(--ct-orange);
  border-radius: 6px;
  background: #fff8f5;
  padding: 10px 12px;
}

.coaching-details {
  display: grid;
  gap: 12px;
  border-top: 1px solid var(--ct-gray-200);
  padding-top: 10px;
}

.coaching-details summary {
  cursor: pointer;
  color: var(--ct-charcoal);
  font-weight: 700;
}

.coaching-details[open] {
  gap: 12px;
}

.coaching-details[open] summary {
  margin-bottom: 10px;
}

.session-log {
  margin: 0;
  padding-left: 20px;
  color: var(--ct-charcoal);
}

.session-log li {
  margin-bottom: 10px;
}

.session-log.expanded li {
  margin-bottom: 16px;
}

.summary-list {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 8px 14px;
  margin: 0;
}

.summary-list dt {
  color: var(--ct-gray-700);
  font-weight: 700;
}

.summary-list dd {
  margin: 0;
}

.prompt-preview-label {
  margin-top: 22px;
}

.reflection-input {
  min-height: 120px;
  margin-top: 8px;
}

@media (max-width: 820px) {
  .app-header {
    grid-template-columns: 1fr;
    gap: 10px;
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .hero-panel,
  .site-media-strip,
  .setup-grid,
  .content-grid,
  .simulation-layout {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    min-height: 640px;
    background:
      linear-gradient(180deg, rgba(0, 0, 0, 0.86) 0%, rgba(0, 0, 0, 0.58) 62%, rgba(0, 0, 0, 0.36) 100%),
      url("assets/chemtrend-site/home-hero-mobile.jpg") center / cover no-repeat;
  }

  .summary-list {
    grid-template-columns: 1fr;
  }

  .quality-row,
  .signal-grid {
    grid-template-columns: 1fr;
  }

  .button-row > button {
    flex: 1 1 210px;
  }
}