@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;700;800&family=Space+Mono:wght@400;700&display=swap');

:root {
  --bg: #f6f7f4;
  --surface: #ffffff;
  --ink: #131313;
  --muted: #4b4f44;
  --line: #1f1f1f;
  --accent-1: #b8ef10;
  --accent-2: #a1da03;
  --accent-3: #7bb100;
  --accent-4: #2f4900;
  --radius-lg: 28px;
  --radius-md: 18px;
  --shadow-soft: 0 24px 60px rgba(15, 22, 0, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Manrope', sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: -180px;
  right: -120px;
  width: min(55vw, 780px);
  height: min(55vw, 780px);
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(circle at 40% 40%, rgba(184, 239, 16, 0.42) 0%, rgba(184, 239, 16, 0.16) 38%, rgba(184, 239, 16, 0) 70%),
    radial-gradient(circle at 70% 20%, rgba(161, 218, 3, 0.35) 0%, rgba(161, 218, 3, 0) 64%);
}

a {
  color: var(--ink);
  text-decoration: none;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(19, 19, 19, 0.2);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

nav .logo a {
  display: flex;
  align-items: center;
  line-height: 0;
}

.nav-logo {
  width: clamp(110px, 14vw, 170px);
  height: auto;
  display: block;
}

nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 0;
  padding: 0;
}

nav ul li a {
  font-size: 0.93rem;
  font-weight: 600;
  color: rgba(19, 19, 19, 0.8);
}

nav ul li a:hover {
  color: var(--ink);
}

.hero {
  margin: 28px 20px 0;
  padding: clamp(30px, 6vw, 74px);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(232, 241, 214, 0.86));
  border: 1px solid rgba(19, 19, 19, 0.22);
  box-shadow: var(--shadow-soft);
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  letter-spacing: -0.03em;
  line-height: 1.06;
}

.hero p {
  margin: 0 0 20px;
  max-width: 70ch;
  color: var(--muted);
  font-size: 1.02rem;
}

.hero-logo {
  display: block;
  width: min(340px, 78%);
  border-radius: 16px;
  margin-bottom: 20px;
}

.btn {
  display: inline-block;
  padding: 11px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  margin: 4px;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.btn.primary {
  background: linear-gradient(130deg, var(--accent-2), var(--accent-1));
  color: #0e1203;
}

.btn.secondary {
  background-color: var(--surface);
  color: var(--ink);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

section {
  padding: clamp(28px, 4vw, 44px);
  background-color: var(--surface);
  margin: 22px 20px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(19, 19, 19, 0.18);
}

section h2 {
  margin-top: 0;
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  letter-spacing: -0.02em;
}

h3,
h4,
.accordion-title,
.quiz-question {
  font-family: 'Space Mono', monospace;
}

.grid {
  display: grid;
  gap: 18px;
}

.grid.three {
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.grid.three > div,
.summary-card,
.action-card,
.product-card,
.quiz-container {
  background: #fcfdf9;
  border: 1px solid rgba(19, 19, 19, 0.24);
  border-radius: 16px;
  padding: 16px;
}

.accordion {
  border-top: 1px solid rgba(19, 19, 19, 0.14);
}

.accordion-item {
  border-bottom: 1px solid rgba(19, 19, 19, 0.14);
}

.accordion-title {
  padding: 14px;
  cursor: pointer;
}

.accordion-content {
  display: none;
  padding: 0 14px 14px;
}

.quiz-container {
  max-width: 700px;
  margin: 0 auto;
  box-shadow: var(--shadow-soft);
}

.progress-bar {
  height: 9px;
  background-color: #dee3d2;
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 20px;
}

.progress-bar-inner {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-3), var(--accent-1));
  transition: width 0.3s ease;
}

.quiz-question {
  margin-bottom: 20px;
  font-size: 1.15rem;
  font-weight: 500;
  color: #2b2f27;
  letter-spacing: 0.01em;
}

.answer-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.quiz-controls {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: 16px;
}

.answer-option {
  padding: 12px;
  border: 1px solid rgba(19, 19, 19, 0.28);
  border-radius: 12px;
  cursor: pointer;
  font-family: 'Manrope', sans-serif;
  font-size: 0.98rem;
  background: #fff;
  text-align: left;
}

.answer-option:hover {
  background-color: rgba(184, 239, 16, 0.16);
}

.option-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.option-card {
  min-height: 205px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.option-card-title {
  margin: 0;
  font-size: 1.02rem;
  font-family: 'Space Mono', monospace;
  font-weight: 700;
}

.option-card-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.option-card-list {
  margin: 0;
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: #262a22;
  font-size: 0.92rem;
}

.multi-options,
.scale-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.multi-option {
  display: flex;
  align-items: center;
  gap: 10px;
}

.multi-option input[type='checkbox'] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-3);
}

.scale-option {
  text-align: left;
}

.question-input {
  width: 100%;
  padding: 12px;
  border: 1px solid rgba(19, 19, 19, 0.28);
  border-radius: 12px;
  font-family: 'Manrope', sans-serif;
  font-size: 0.98rem;
  background: #fff;
  resize: vertical;
}

.question-input:focus {
  outline: 2px solid rgba(161, 218, 3, 0.38);
  outline-offset: 1px;
  border-color: var(--accent-3);
}

.hidden {
  display: none;
}

.results-container {
  max-width: 980px;
  margin: 0 auto;
}

.summary-card {
  margin-bottom: 18px;
}

#leak-insights-list {
  margin: 0;
  padding-left: 20px;
}

#leak-insights-list li {
  margin-bottom: 8px;
}

.opportunity-note {
  margin: 14px 0 0;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(122, 177, 0, 0.7);
  background: rgba(184, 239, 16, 0.15);
}

.discovery-focus {
  border: 2px solid var(--accent-3);
  background: linear-gradient(160deg, rgba(247, 255, 231, 0.95), rgba(233, 248, 199, 0.88));
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.product-card img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
}

.action-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 14px;
}

.highlight {
  border-color: rgba(122, 177, 0, 0.9);
  background: rgba(184, 239, 16, 0.2);
}

form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

form input,
form textarea,
form select {
  padding: 11px;
  border: 1px solid rgba(19, 19, 19, 0.27);
  border-radius: 10px;
  font-family: 'Manrope', sans-serif;
  background: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
}

table th,
table td {
  border-bottom: 1px solid rgba(19, 19, 19, 0.12);
  text-align: left;
  padding: 8px;
}

footer {
  background-color: #f0f2ea;
  padding: 22px;
  text-align: center;
  border-top: 1px solid rgba(19, 19, 19, 0.16);
}

@media (max-width: 920px) {
  nav {
    align-items: flex-start;
    gap: 10px;
    flex-direction: column;
  }

  nav ul {
    gap: 10px;
  }

  .hero {
    margin-top: 18px;
  }

  section {
    margin: 14px;
  }
}

@media (max-width: 620px) {
  .btn {
    width: 100%;
    text-align: center;
  }
}