:root {
  --bg: #0b0f19;
  --bg-soft: #121827;
  --text: #e6e9f2;
  --muted: #a8b0c2;
  --primary: #5b7cfa;
  --primary-strong: #3c5ae8;
  --accent: #15c39a;
  --card: #161d2f;
  --stroke: rgba(255, 255, 255, 0.08);
  --shadow: 0 20px 60px rgba(5, 11, 24, 0.35);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--stroke);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  letter-spacing: 0.4px;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: grid;
  place-items: center;
  color: #0b0f19;
  font-weight: 700;
  font-size: 18px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav-links a.active {
  color: var(--text);
}

.nav-cta {
  display: flex;
  gap: 12px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  min-height: 44px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: white;
  box-shadow: var(--shadow);
}

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

.btn-outline {
  border-color: var(--stroke);
  color: var(--text);
  background: transparent;
}

.btn-ghost {
  border-color: transparent;
  color: var(--muted);
}

.app-main {
  flex: 1;
}

.app-hero {
  padding: 90px 0 60px;
  background: radial-gradient(circle at top right, rgba(91, 124, 250, 0.25), transparent 45%),
    radial-gradient(circle at top left, rgba(21, 195, 154, 0.2), transparent 40%);
}

.app-hero h1 {
  font-size: clamp(2.3rem, 5vw, 3.4rem);
  line-height: 1.15;
  margin-bottom: 16px;
}

.app-hero p {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 640px;
}

.app-section {
  padding: 40px 0 80px;
}

.stack {
  display: grid;
  gap: 24px;
}

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

.card h2,
.card h3 {
  margin-bottom: 12px;
}

.form-stack {
  display: grid;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

label {
  font-size: 0.9rem;
  color: var(--muted);
}

input,
select,
textarea {
  width: 100%;
  background: var(--bg-soft);
  border: 1px solid var(--stroke);
  color: var(--text);
  border-radius: 14px;
  padding: 12px 14px;
  font-size: 0.95rem;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: rgba(91, 124, 250, 0.6);
  box-shadow: 0 0 0 3px rgba(91, 124, 250, 0.18);
}

.helper-text {
  color: var(--muted);
  font-size: 0.9rem;
}

.results {
  margin-top: 20px;
  display: grid;
  gap: 12px;
  color: var(--muted);
}

.results ul {
  list-style: none;
  display: grid;
  gap: 8px;
}

.results a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: rgba(91, 124, 250, 0.4);
  overflow-wrap: anywhere;
  word-break: break-word;
  max-width: 100%;
  display: inline-block;
}

footer {
  border-top: 1px solid var(--stroke);
  padding: 32px 0 40px;
  color: var(--muted);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .nav {
    flex-wrap: wrap;
  }

  .nav-links {
    display: flex;
    flex-wrap: wrap;
    width: 100%;
    gap: 16px;
  }

  .app-hero {
    padding: 70px 0 50px;
  }
}

@media (max-width: 640px) {
  .nav-cta {
    width: 100%;
  }

  .nav-cta .btn {
    flex: 1 1 0;
  }

  .btn {
    width: 100%;
    font-size: 1rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}