:root {
  color-scheme: light;
  --ink: #172126;
  --muted: #5d6a72;
  --line: #d8e0e3;
  --paper: #f7f8f7;
  --panel: #ffffff;
  --teal: #0f766e;
  --teal-dark: #0b4d49;
  --amber: #c77721;
  --steel: #334155;
  --blue: #315f8d;
  --shadow: 0 18px 45px rgba(23, 33, 38, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

.topbar {
  align-items: center;
  background: rgba(247, 248, 247, 0.92);
  border-bottom: 1px solid var(--line);
  display: flex;
  height: 68px;
  justify-content: space-between;
  left: 0;
  padding: 0 clamp(18px, 4vw, 56px);
  position: sticky;
  right: 0;
  top: 0;
  z-index: 10;
}

.brand,
nav,
.hero-actions,
.score-strip,
.card-heading {
  align-items: center;
  display: flex;
}

.brand {
  font-weight: 800;
  gap: 10px;
}

.brand-mark {
  align-items: center;
  background: var(--teal);
  border-radius: 6px;
  color: white;
  display: inline-flex;
  height: 32px;
  justify-content: center;
  width: 32px;
}

nav {
  gap: 22px;
}

nav a,
.button {
  color: inherit;
  text-decoration: none;
}

nav a {
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.hero {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  min-height: calc(100vh - 68px);
  padding: clamp(36px, 6vw, 76px) clamp(18px, 5vw, 68px);
}

.hero-copy {
  align-self: center;
  max-width: 720px;
}

.eyebrow {
  color: var(--teal-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin: 0 0 8px;
  text-transform: uppercase;
}

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

h1 {
  font-size: clamp(3rem, 7vw, 6.7rem);
  line-height: 0.92;
  margin-bottom: 22px;
}

h2 {
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  line-height: 1.08;
}

h3 {
  font-size: 1.1rem;
  line-height: 1.2;
}

.hero-copy p:not(.eyebrow) {
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  max-width: 620px;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-weight: 800;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
}

.button.primary {
  background: var(--teal);
  border-color: var(--teal);
  color: white;
}

.button.secondary {
  background: white;
}

.button.full {
  width: 100%;
}

.hero img {
  align-self: center;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  min-height: 340px;
  object-fit: cover;
  width: 100%;
}

.workspace {
  align-items: start;
  display: grid;
  gap: 24px;
  grid-template-columns: 360px minmax(0, 1fr);
  padding: 0 clamp(18px, 5vw, 68px) 56px;
}

.panel,
.result-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.input-panel {
  box-shadow: 0 8px 24px rgba(23, 33, 38, 0.08);
  display: grid;
  gap: 16px;
  padding: 22px;
  position: sticky;
  top: 88px;
}

.section-title h2,
.card-heading h2,
.card-heading h3 {
  margin-bottom: 0;
}

label {
  color: var(--steel);
  display: grid;
  font-size: 0.86rem;
  font-weight: 800;
  gap: 7px;
}

input,
select,
textarea {
  background: #fbfcfc;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  font: inherit;
  padding: 11px 12px;
  width: 100%;
}

textarea {
  min-height: 92px;
  resize: vertical;
}

input[type="range"] {
  accent-color: var(--teal);
  padding: 0;
}

.range-value {
  color: var(--muted);
  font-weight: 700;
}

.coach-output {
  display: grid;
  gap: 18px;
}

.score-strip {
  background: var(--ink);
  border-radius: 8px;
  color: white;
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(3, 1fr);
  overflow: hidden;
}

.score-strip div {
  background: rgba(255, 255, 255, 0.06);
  min-height: 96px;
  padding: 20px;
}

.score-strip span {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  font-weight: 900;
  line-height: 1;
}

.score-strip small {
  color: #cfd8dc;
  display: block;
  font-weight: 800;
  margin-top: 8px;
}

.result-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.result-card {
  padding: 22px;
}

.result-card.wide {
  grid-column: 1 / -1;
}

.card-heading {
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.card-heading .eyebrow {
  margin: 0;
}

ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 20px;
}

li::marker {
  color: var(--amber);
}

.timeline {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.timeline-item {
  border-left: 4px solid var(--teal);
  background: #f5f8f8;
  border-radius: 6px;
  min-height: 156px;
  padding: 16px;
}

.timeline-item:nth-child(2) {
  border-left-color: var(--blue);
}

.timeline-item:nth-child(3) {
  border-left-color: var(--amber);
}

.timeline-item strong {
  display: block;
  margin-bottom: 8px;
}

@media (max-width: 940px) {
  .hero,
  .workspace {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero img {
    min-height: 260px;
  }

  .input-panel {
    position: static;
  }
}

@media (max-width: 680px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    height: auto;
    gap: 12px;
    padding-bottom: 14px;
    padding-top: 14px;
  }

  nav {
    gap: 14px;
  }

  .score-strip,
  .result-grid,
  .timeline {
    grid-template-columns: 1fr;
  }

  .card-heading {
    align-items: flex-start;
    flex-direction: column;
  }
}