:root {
  --codexa-green: rgb(37, 191, 68);
  --codexa-green-dark: rgb(19, 153, 47);
  --codexa-green-soft: rgb(234, 249, 238);
  --codexa-green-extra-soft: rgb(244, 252, 246);
  --codexa-graphite: rgb(17, 19, 26);
  --codexa-text: rgb(49, 55, 67);
  --codexa-muted: rgb(109, 116, 128);
  --codexa-line: rgb(232, 235, 239);
  --codexa-white: rgb(255, 255, 255);
  --codexa-off-white: rgb(250, 252, 251);

  --font-primary: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container: 1120px;
  --form-width: 860px;
  --radius-xs: 10px;
  --radius-sm: 14px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-pill: 999px;
  --shadow-soft: 0 18px 60px rgba(17, 19, 26, 0.08);
  --shadow-card: 0 16px 40px rgba(17, 19, 26, 0.06);
  --focus-ring: 0 0 0 4px rgba(37, 191, 68, 0.16);
  --transition: 180ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--codexa-text);
  font-family: var(--font-primary);
  background:
    radial-gradient(circle at top left, rgba(37, 191, 68, 0.16), transparent 28rem),
    linear-gradient(180deg, var(--codexa-off-white) 0%, #ffffff 38%, var(--codexa-green-extra-soft) 100%);
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(17, 19, 26, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 19, 26, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 78%);
}

img,
svg {
  display: block;
  max-width: 100%;
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
}

button:not(:disabled) {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
}

a {
  color: inherit;
}

.app-shell {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
  padding: 28px 0 72px;
}

.site-header {
  position: sticky;
  top: 16px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 16px;
  border: 1px solid rgba(232, 235, 239, 0.86);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 12px 34px rgba(17, 19, 26, 0.06);
  backdrop-filter: blur(18px);
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  text-decoration: none;
}

.brand-link img {
  width: 132px;
  height: auto;
}

.header-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 15px;
  border: 1px solid rgba(37, 191, 68, 0.16);
  border-radius: var(--radius-pill);
  color: var(--codexa-green-dark);
  background: var(--codexa-green-soft);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

.header-pill::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--codexa-green);
  box-shadow: 0 0 0 6px rgba(37, 191, 68, 0.12);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
  padding: 64px 0 34px;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 860px;
  min-width: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin: 0 0 18px;
  padding: 8px 12px;
  border: 1px solid rgba(37, 191, 68, 0.2);
  border-radius: var(--radius-pill);
  color: var(--codexa-green-dark);
  background: rgba(234, 249, 238, 0.86);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  color: var(--codexa-graphite);
  font-size: clamp(44px, 6vw, 76px);
  font-weight: 900;
  letter-spacing: -0.072em;
  line-height: 0.98;
}

.hero h1 span {
  color: var(--codexa-green);
}

.hero-subtitle {
  max-width: 720px;
  margin: 24px 0 0;
  color: var(--codexa-muted);
  font-size: clamp(16px, 1.8vw, 20px);
  font-weight: 450;
  line-height: 1.75;
}

.hero-panel {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 360px;
  padding: 28px;
  border: 1px solid rgba(232, 235, 239, 0.92);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(150deg, rgba(255, 255, 255, 0.94), rgba(244, 252, 246, 0.92)),
    var(--codexa-white);
  box-shadow: var(--shadow-soft);
}

.hero-panel::before,
.hero-panel::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero-panel::before {
  width: 240px;
  height: 240px;
  top: -130px;
  right: -90px;
  background: rgba(37, 191, 68, 0.14);
}

.hero-panel::after {
  width: 160px;
  height: 160px;
  right: 32px;
  bottom: -92px;
  border: 1px solid rgba(37, 191, 68, 0.24);
}

.panel-top {
  position: relative;
  z-index: 1;
}

.panel-icon {
  display: grid;
  width: 62px;
  height: 62px;
  place-items: center;
  margin-bottom: 22px;
  border-radius: 20px;
  background: var(--codexa-graphite);
  box-shadow: 0 14px 34px rgba(17, 19, 26, 0.14);
}

.panel-icon img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.hero-panel h2 {
  max-width: 360px;
  margin: 0;
  color: var(--codexa-graphite);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 900;
  letter-spacing: -0.058em;
  line-height: 1.04;
}

.panel-list {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.panel-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--codexa-text);
  font-size: 14px;
  font-weight: 750;
}

.panel-list li::before {
  content: '';
  width: 9px;
  height: 9px;
  flex: 0 0 9px;
  border-radius: 50%;
  background: var(--codexa-green);
}

.progress-card {
  position: relative;
  z-index: 1;
  margin-top: 36px;
  padding: 18px;
  border: 1px solid rgba(232, 235, 239, 0.94);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.82);
}

.progress-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 11px;
  color: var(--codexa-muted);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.progress-track {
  overflow: hidden;
  height: 9px;
  border-radius: var(--radius-pill);
  background: var(--codexa-green-soft);
}

.progress-bar {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--codexa-green), var(--codexa-green-dark));
  transition: width var(--transition);
}

.form-layout {
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.briefing-form {
  display: grid;
  gap: 20px;
  width: min(100%, var(--form-width));
}

.form-section {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(232, 235, 239, 0.96);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-card);
}

.form-section::before {
  content: '';
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--codexa-green), rgba(37, 191, 68, 0));
  opacity: 0.78;
}

.section-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 28px 28px 18px;
}

.section-number {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 14px;
  color: var(--codexa-green-dark);
  background: var(--codexa-green-soft);
  font-size: 13px;
  font-weight: 900;
}

.section-header h2 {
  margin: 0;
  color: var(--codexa-graphite);
  font-size: clamp(22px, 2.3vw, 30px);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 1.08;
}

.section-header p {
  margin: 8px 0 0;
  color: var(--codexa-muted);
  font-size: 15px;
  line-height: 1.65;
}

.section-content {
  display: grid;
  gap: 18px;
  padding: 0 28px 28px;
}

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

.field {
  display: grid;
  gap: 8px;
}

.field--full {
  grid-column: 1 / -1;
}

.field-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--codexa-graphite);
  font-size: 14px;
  font-weight: 850;
}

.required-mark {
  color: var(--codexa-green-dark);
  font-weight: 900;
}

.form-control {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border: 1px solid var(--codexa-line);
  border-radius: var(--radius-sm);
  color: var(--codexa-graphite);
  background: var(--codexa-white);
  outline: none;
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    background var(--transition),
    transform var(--transition);
}

.form-control::placeholder {
  color: rgba(109, 116, 128, 0.74);
}

textarea.form-control {
  min-height: 136px;
  padding-top: 15px;
  padding-bottom: 15px;
  resize: vertical;
  line-height: 1.65;
}

.form-control:hover {
  border-color: rgba(37, 191, 68, 0.42);
}

.form-control:focus {
  border-color: var(--codexa-green);
  box-shadow: var(--focus-ring);
}

.form-control.is-invalid,
.option-group.is-invalid {
  border-color: #dc3545;
  background: #fffafa;
}

.form-control.is-invalid:focus {
  box-shadow: 0 0 0 4px rgba(220, 53, 69, 0.12);
}

.field-hint {
  color: var(--codexa-muted);
  font-size: 13px;
  line-height: 1.55;
}

.field-error {
  min-height: 18px;
  color: #b42318;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.4;
}

.option-group {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 3px;
  border: 1px solid transparent;
  border-radius: calc(var(--radius-md) + 3px);
}

.option-card {
  position: relative;
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: center;
  padding: 16px;
  border: 1px solid var(--codexa-line);
  border-radius: var(--radius-md);
  color: var(--codexa-text);
  background: var(--codexa-white);
  text-align: center;
  font-weight: 850;
  transition:
    transform var(--transition),
    border-color var(--transition),
    box-shadow var(--transition),
    color var(--transition),
    background var(--transition);
}

.option-card:hover {
  transform: translateY(-1px);
  border-color: rgba(37, 191, 68, 0.46);
  box-shadow: 0 14px 30px rgba(17, 19, 26, 0.06);
}

.option-card:focus-visible,
.chip:focus-visible,
.submit-button:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.option-card.is-selected {
  border-color: rgba(37, 191, 68, 0.58);
  color: var(--codexa-green-dark);
  background: var(--codexa-green-soft);
  box-shadow: inset 0 0 0 1px rgba(37, 191, 68, 0.14);
}

.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 15px;
  border: 1px solid var(--codexa-line);
  border-radius: var(--radius-pill);
  color: var(--codexa-text);
  background: var(--codexa-white);
  font-size: 14px;
  font-weight: 800;
  transition:
    border-color var(--transition),
    background var(--transition),
    color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
}

.chip:hover {
  transform: translateY(-1px);
  border-color: rgba(37, 191, 68, 0.48);
}

.chip.is-selected {
  border-color: var(--codexa-green);
  color: var(--codexa-green-dark);
  background: var(--codexa-green-soft);
  box-shadow: inset 0 0 0 1px rgba(37, 191, 68, 0.1);
}

.status-message {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.45;
}

.status-message.is-visible {
  display: flex;
}

.status-message.is-success {
  border: 1px solid rgba(37, 191, 68, 0.18);
  color: var(--codexa-green-dark);
  background: var(--codexa-green-soft);
}

.status-message.is-error {
  border: 1px solid rgba(220, 53, 69, 0.16);
  color: #b42318;
  background: #fff4f4;
}

.submit-area {
  display: grid;
  gap: 12px;
  padding: 8px 0 0;
}

.submit-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 62px;
  padding: 0 22px;
  border-radius: var(--radius-pill);
  color: var(--codexa-white);
  background: linear-gradient(135deg, var(--codexa-green), var(--codexa-green-dark));
  box-shadow: 0 16px 34px rgba(37, 191, 68, 0.26);
  font-size: 15px;
  font-weight: 900;
  letter-spacing: -0.01em;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    filter var(--transition),
    opacity var(--transition);
}

.submit-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 20px 42px rgba(37, 191, 68, 0.32);
  filter: saturate(1.04);
}

.submit-button:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 12px 26px rgba(37, 191, 68, 0.22);
}

.submit-button:disabled {
  opacity: 0.58;
  box-shadow: none;
}

.submit-note {
  margin: 0;
  color: var(--codexa-muted);
  font-size: 13px;
  line-height: 1.55;
  text-align: center;
}

.sidebar-card {
  position: sticky;
  top: 110px;
  display: grid;
  gap: 18px;
  padding: 22px;
  border: 1px solid rgba(232, 235, 239, 0.96);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(16px);
}

.sidebar-card h2 {
  margin: 0;
  color: var(--codexa-graphite);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 1.08;
}

.sidebar-card p {
  margin: 0;
  color: var(--codexa-muted);
  font-size: 14px;
  line-height: 1.65;
}

.sidebar-steps {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sidebar-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  color: var(--codexa-text);
  font-size: 13px;
  font-weight: 750;
  line-height: 1.45;
}

.sidebar-steps span {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 9px;
  color: var(--codexa-green-dark);
  background: var(--codexa-green-soft);
  font-size: 11px;
  font-weight: 900;
}

.no-script-message {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 32px;
  text-align: center;
}

.no-script-message img {
  width: 170px;
}

.no-script-message h1 {
  margin: 22px 0 8px;
  color: var(--codexa-graphite);
  font-size: 32px;
  letter-spacing: -0.04em;
}

.no-script-message p {
  max-width: 520px;
  margin: 0;
  color: var(--codexa-muted);
  line-height: 1.7;
}

@media (max-width: 1020px) {
  .hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .app-shell {
    width: min(100% - 22px, var(--container));
    padding: 14px 0 48px;
  }

  .site-header {
    top: 10px;
    padding: 11px 12px;
  }

  .brand-link img {
    width: 112px;
  }

  .header-pill {
    min-height: 34px;
    padding: 0 10px;
    font-size: 11px;
  }

  .hero {
    gap: 20px;
    padding: 52px 0 28px;
  }

  .hero h1 {
    font-size: clamp(40px, 13vw, 56px);
  }

  .hero-subtitle {
    margin-top: 18px;
  }

  .form-section {
    border-radius: 22px;
  }

  .section-header {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 22px 20px 16px;
  }

  .section-content {
    padding: 0 20px 22px;
  }

  .field-grid,
  .option-group {
    grid-template-columns: 1fr;
  }

  .option-card {
    min-height: 58px;
    justify-content: flex-start;
    text-align: left;
  }


  .submit-button {
    min-height: 58px;
  }
}

@media (max-width: 430px) {
  .site-header {
    border-radius: 20px;
  }

  .header-pill span {
    display: none;
  }

  .header-pill {
    width: 36px;
    justify-content: center;
    padding: 0;
  }

  .header-pill::before {
    box-shadow: none;
  }

}