:root {
  --bg: #f6f9fc;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --primary: #0ea5a3;
  --primary-dark: #0b8f8d;
  --line: #d9e2ec;
  --shadow: 0 8px 24px rgba(2, 6, 23, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Poppins", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #eff6ff 0%, var(--bg) 45%, #eefbf9 100%);
  line-height: 1.55;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

nav {
  display: flex;
  gap: 1.1rem;
}

nav a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
}

nav a:hover {
  color: var(--primary);
}

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  font-size: 1.5rem;
}

.hero {
  padding: 4.3rem 0 3.2rem;
}

.hero-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
}

.tag {
  display: inline-block;
  margin: 0 0 0.8rem;
  background: #d6f5f4;
  color: #0b4c4b;
  font-weight: 600;
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  font-size: 0.85rem;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.18;
}

.subtext {
  max-width: 58ch;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.2rem;
}

.btn {
  display: inline-block;
  border-radius: 10px;
  padding: 0.72rem 1.1rem;
  text-decoration: none;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
}

.btn.primary {
  background: var(--primary);
  color: #ffffff;
}

.btn.primary:hover {
  background: var(--primary-dark);
}

.btn.ghost {
  border-color: var(--line);
  color: var(--text);
  background: #ffffff;
}

.hero-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.1rem 1.2rem;
  box-shadow: var(--shadow);
}

.hero-card h3 {
  margin-top: 0.2rem;
}

.hero-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.section {
  padding: 3.8rem 0;
}

.section.alt {
  background: rgba(255, 255, 255, 0.7);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

h2 {
  margin-top: 0;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
}

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

.predictor-note {
  color: var(--muted);
  margin-top: -0.3rem;
}

.predictor-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 0.9fr 1.1fr;
  margin-top: 1.1rem;
}

.predictor-form,
.predictor-result {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
}

.predictor-form {
  display: grid;
  gap: 0.6rem;
}

select {
  width: 100%;
  border-radius: 8px;
  border: 1px solid #c9d3df;
  padding: 0.65rem 0.75rem;
  font: inherit;
  background: #ffffff;
}

select:focus {
  border-color: var(--primary);
  outline: 2px solid rgba(14, 165, 163, 0.2);
}

.btn.full {
  width: 100%;
}

.predictor-result h3 {
  margin-top: 0.1rem;
}

.rank-chip {
  display: inline-block;
  margin: 0.2rem 0 0.8rem;
  background: #d6f5f4;
  color: #0b4c4b;
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-weight: 700;
}

.result-list {
  display: grid;
  gap: 0.55rem;
}

.result-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
}

.result-item p {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.chance {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
}

.chance.high {
  background: #dcfce7;
  color: #166534;
}

.chance.medium {
  background: #fef3c7;
  color: #92400e;
}

.chance.low {
  background: #fee2e2;
  color: #991b1b;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
}

.card h3 {
  margin: 0 0 0.5rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
}

.step {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
}

.step span {
  width: 30px;
  height: 30px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  background: #d6f5f4;
  color: #0b4c4b;
  font-weight: 700;
}

.step p {
  margin: 0.8rem 0 0;
}

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

.contact-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
  display: grid;
  gap: 0.5rem;
}

label {
  font-weight: 600;
  font-size: 0.92rem;
}

input,
textarea {
  width: 100%;
  border-radius: 8px;
  border: 1px solid #c9d3df;
  padding: 0.65rem 0.75rem;
  font: inherit;
}

input:focus,
textarea:focus {
  border-color: var(--primary);
  outline: 2px solid rgba(14, 165, 163, 0.2);
}

.site-footer {
  padding: 1rem 0 1.5rem;
  text-align: center;
  color: var(--muted);
}

.csab-cta-row {
  margin-top: 1rem;
}

@media (max-width: 850px) {
  .hero-grid,
  .predictor-grid,
  .contact-grid,
  .steps,
  .cards {
    grid-template-columns: 1fr;
  }

  .menu-toggle {
    display: inline-block;
  }

  nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 1rem 4%;
    display: none;
    flex-direction: column;
    gap: 0.8rem;
  }

  nav.open {
    display: flex;
  }
}