:root {
  --bg: #f6f3ee;
  --bg-alt: #eef5ff;
  --ink: #1f2328;
  --muted: #5b646d;
  --accent: #8aa6d8;
  --accent-strong: #5e84c7;
  --sunset: #f2d4b8;
  --card: #ffffff;
  --border: rgba(31, 35, 40, 0.1);
  --shadow: 0 30px 80px rgba(29, 37, 50, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Sora', sans-serif;
  color: var(--ink);
  background: linear-gradient(140deg, var(--bg), var(--bg-alt));
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--accent-strong);
}

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

.container.narrow {
  width: min(850px, 92vw);
}

.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(0px);
  opacity: 0.55;
  z-index: 0;
}

.bg-orb--one {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, #e8f2ff 0%, rgba(232, 242, 255, 0) 65%);
  top: -120px;
  right: -120px;
}

.bg-orb--two {
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, #f7e4cd 0%, rgba(247, 228, 205, 0) 70%);
  bottom: -160px;
  left: -160px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(246, 243, 238, 0.8);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
}

.brand-text {
  font-weight: 600;
  letter-spacing: 0.02em;
}

.nav {
  display: flex;
  gap: 22px;
  font-size: 0.95rem;
  color: var(--muted);
}

.hero {
  padding: 90px 0 60px;
  position: relative;
}

.hero-grid {
  display: grid;
  gap: 48px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.7rem;
  color: var(--accent-strong);
  font-weight: 600;
}

.hero-copy h1 {
  font-family: 'Fraunces', serif;
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  margin: 16px 0;
}

.lead {
  color: var(--muted);
  line-height: 1.6;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin: 28px 0 24px;
  flex-wrap: wrap;
}

.btn {
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn.primary {
  background: var(--accent-strong);
  color: #fff;
  box-shadow: 0 18px 40px rgba(94, 132, 199, 0.25);
}

.btn.ghost {
  border-color: var(--accent-strong);
  color: var(--accent-strong);
  background: transparent;
}

.btn.small {
  padding: 10px 18px;
  font-size: 0.9rem;
}

.btn:hover {
  transform: translateY(-2px);
}

.hero-meta {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  color: var(--muted);
}

.hero-meta strong {
  display: block;
  color: var(--ink);
  margin-bottom: 4px;
}

.hero-panel {
  display: grid;
  gap: 18px;
}

.hero-panel__card {
  background: var(--card);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.hero-panel__card.accent {
  background: linear-gradient(160deg, #fdf7ee 0%, #f4f8ff 100%);
}

.hero-panel__card h3 {
  margin-top: 0;
}

.hero-panel__card ul {
  padding-left: 18px;
  color: var(--muted);
}

.text-link {
  display: inline-flex;
  margin-top: 10px;
  font-weight: 600;
  color: var(--accent-strong);
}

.section {
  padding: 70px 0;
  position: relative;
  z-index: 1;
}

.section-head {
  margin-bottom: 36px;
}

.section-head h2,
.section-head h1 {
  font-family: 'Fraunces', serif;
  font-size: clamp(2rem, 4vw, 2.6rem);
  margin: 0 0 12px;
}

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

.project-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.project-card {
  background: var(--card);
  border-radius: 22px;
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: grid;
  gap: 14px;
}

.project-card.muted {
  background: rgba(255, 255, 255, 0.6);
  color: var(--muted);
}

.project-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.pill {
  background: var(--accent);
  color: #fff;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.pill.ghost {
  background: rgba(94, 132, 199, 0.15);
  color: var(--accent-strong);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--muted);
}

.project-tags span {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(94, 132, 199, 0.1);
}

.solver-section {
  background: rgba(255, 255, 255, 0.55);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.solver-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.tab {
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  font-weight: 600;
  color: var(--muted);
}

.tab.active {
  background: var(--accent-strong);
  color: #fff;
  border-color: transparent;
}

.solver-panel {
  display: none;
}

.solver-panel.active {
  display: block;
}

.solver-form {
  background: var(--card);
  border-radius: 24px;
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.form-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.form-row label {
  font-weight: 600;
}

.form-row select {
  min-width: 200px;
}

.form-help {
  font-size: 0.85rem;
  color: var(--accent-strong);
}

.form-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

label span {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 6px;
  color: var(--muted);
}

input,
select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  font-family: inherit;
  background: #fff;
}

input:focus,
select:focus {
  outline: 2px solid rgba(94, 132, 199, 0.4);
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 22px;
  flex-wrap: wrap;
}

.form-status {
  font-size: 0.85rem;
  color: var(--muted);
}

.toggle-row {
  margin: 10px 0 18px;
}

.toggle {
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 0.9rem;
  color: var(--muted);
}

.results {
  margin-top: 40px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 24px;
  border: 1px solid var(--border);
  padding: 24px;
}

.results-head h3 {
  margin: 0 0 8px;
}

.results-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-top: 20px;
}

.result-card {
  background: #fff;
  border-radius: 18px;
  border: 1px solid var(--border);
  padding: 16px;
  display: grid;
  gap: 12px;
}

.result-card img {
  width: 100%;
  border-radius: 12px;
}

.site-footer {
  padding: 40px 0 60px;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 18px;
  align-items: center;
}

.info-block {
  background: rgba(255, 255, 255, 0.7);
  padding: 24px;
  border-radius: 20px;
  border: 1px solid var(--border);
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}

.info-block ul {
  padding-left: 18px;
  color: var(--muted);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .hero {
    padding-top: 70px;
  }
}