:root {
  --brand-bg: #020617;
  --brand-surface: #0f172a;
  --brand-panel: #1e293b;
  --brand-primary: #2563eb;
  --brand-primary-hover: #3b82f6;
  --brand-accent: #dc2626;
  --brand-text: #ffffff;
  --brand-text-muted: #cbd5f5;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--brand-bg);
  color: var(--brand-text-muted);
  font-family: 'Inter', system-ui, sans-serif;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.section-panel {
  background-color: #05080f;
}

.bg-brand-bg {
  background-color: var(--brand-bg);
}

.bg-brand-surface {
  background-color: var(--brand-surface);
}

.bg-brand-panel {
  background-color: var(--brand-panel);
}

.text-brand-primary {
  color: var(--brand-primary);
}

.text-brand-text {
  color: var(--brand-text);
}

.text-brand-text-muted {
  color: var(--brand-text-muted);
}

.border-brand {
  border-color: rgba(148, 163, 184, 0.25);
}

.btn-brand {
  background-color: var(--brand-primary);
  color: white;
}

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

.btn-outline-brand {
  border: 1px solid var(--brand-primary);
  color: var(--brand-primary);
  background-color: transparent;
}

.btn-outline-brand:hover {
  background-color: var(--brand-primary);
  color: white;
}

.container {
  width: min(100%, 1160px);
  margin: 0 auto;
  padding: 0 1.5rem;
}

nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
}

.nav-shell {
  margin: 1rem 0;
  background-color: var(--brand-surface);
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: 2rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.9rem 1.5rem;
}

.nav-link {
  color: var(--brand-text-muted);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--brand-primary-hover);
}

.nav-link.active::after,
.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -0.3rem;
  width: 100%;
  height: 2px;
  background-color: var(--brand-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.hero {
  padding: 5rem 0;
  text-align: center;
}

.hero h1,
.section-title {
  margin: 0;
  color: var(--brand-text);
}

.hero h1 {
  font-size: clamp(2.5rem, 4vw, 4.5rem);
  letter-spacing: -0.04em;
}

.hero p,
.section-intro,
.card p,
.card li,
.contact-copy {
  color: var(--brand-text-muted);
  line-height: 1.9;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 2.5rem;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.card {
  padding: 2rem;
  border-radius: 1.5rem;
  border: 1px solid rgba(148, 163, 184, 0.16);
  background-color: #0b0b0b;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.card h2 {
  margin-top: 0;
  color: var(--brand-text);
}

.card ul {
  margin: 1rem 0 0;
  padding-left: 1.2rem;
}

.card li {
  margin-bottom: 0.75rem;
}

.text-center {
  text-align: center;
}

.section-spacing {
  padding: 6rem 0;
}

.form-shell {
  background-color: #0b0b0b;
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 1.5rem;
  padding: 2rem;
}

.field-group {
  margin-bottom: 1.25rem;
}

.field-group label {
  display: block;
  margin-bottom: 0.65rem;
  color: var(--brand-text-muted);
  font-size: 0.95rem;
}

.field-group input,
.field-group textarea {
  width: 100%;
  padding: 0.95rem 1rem;
  border-radius: 0.95rem;
  border: 1px solid rgba(148, 163, 184, 0.18);
  background-color: #020617;
  color: var(--brand-text);
}

.field-group input:focus,
.field-group textarea:focus {
  outline: none;
  border-color: var(--brand-primary);
}

.button-group {
  display: grid;
  gap: 1rem;
}

.btn-full {
  border: none;
  border-radius: 0.95rem;
  padding: 0.95rem 1rem;
  font-weight: 600;
}

.btn-full:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.status-message {
  margin-top: 1rem;
  font-size: 0.95rem;
  text-align: center;
}

.full-width {
  width: 100%;
}

.max-w-prose {
  max-width: 55rem;
}

.list-disc {
  list-style-type: disc;
}

@media (min-width: 1024px) {
  .hero {
    padding: 7rem 0;
  }
}