:root {
  --color-bg-900: #0a0f1a;
  --color-bg-800: #101a2a;
  --color-surface-700: #162338;
  --color-line-tech: #2d4f76;

  --color-accent-cyan: #20c6ff;
  --color-accent-cyan-strong: #00aef0;
  --color-signal-red: #e3262f;

  --color-text-100: #f5f8ff;
  --color-text-200: #d6deec;
  --color-text-muted: #9fb0c8;

  --container-max: 1160px;
  --radius-md: 0.7rem;
  --radius-lg: 1rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
}

html[data-theme="light"] {
  --color-bg-900: #f4f8ff;
  --color-bg-800: #e6eef9;
  --color-surface-700: #ffffff;
  --color-line-tech: #a6bfdc;
  --color-text-100: #091324;
  --color-text-200: #1d2a3f;
  --color-text-muted: #425673;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", sans-serif;
  color: var(--color-text-100);
  background: radial-gradient(circle at top right, #143057 0%, var(--color-bg-900) 45%) fixed;
  line-height: 1.5;
}

.container {
  width: min(100% - 2rem, var(--container-max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--color-bg-900) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line-tech);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: 72px;
}

.brand {
  color: var(--color-text-100);
  text-decoration: none;
  font-family: "Exo 2", "Segoe UI", sans-serif;
  font-size: 1.7rem;
  font-weight: 700;
}

.brand span {
  color: var(--color-accent-cyan);
}

nav {
  display: flex;
  gap: var(--space-5);
}

nav a {
  color: var(--color-text-200);
  text-decoration: none;
}

nav a:hover,
nav a:focus-visible {
  color: var(--color-accent-cyan);
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-6);
  align-items: center;
  padding: var(--space-7) 0;
}

.kicker {
  margin: 0;
  font-weight: 600;
  color: var(--color-accent-cyan);
}

h1,
h2,
h3 {
  font-family: "Exo 2", "Segoe UI", sans-serif;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.3rem);
  margin: 0.6rem 0 1rem;
}

h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.5rem, 2.4vw, 2.1rem);
}

.hero p {
  color: var(--color-text-200);
}

.hero-card {
  border: 1px solid var(--color-line-tech);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
}

.hero-card img {
  display: block;
  width: 100%;
  height: auto;
}

.cta-row {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 1.2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.btn:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-accent-cyan);
  color: #001625;
}

.btn-primary:hover {
  background: var(--color-accent-cyan-strong);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-100);
  border-color: var(--color-accent-cyan);
}

.section {
  padding: var(--space-6) 0;
}

.section-intro {
  margin-top: -0.2rem;
  color: var(--color-text-200);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}

.card {
  border: 1px solid var(--color-line-tech);
  border-top: 3px solid var(--color-accent-cyan);
  background: color-mix(in srgb, var(--color-surface-700) 90%, transparent);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.card h3 {
  margin-top: 0;
}

.card p {
  margin-bottom: 0;
  color: var(--color-text-200);
}

.contact-form {
  display: grid;
  gap: 0.7rem;
  max-width: 720px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.form-status {
  margin: 0;
  min-height: 1.5rem;
  font-weight: 600;
}

.form-status[data-status="success"] {
  color: var(--color-accent-cyan);
}

.form-status[data-status="error"] {
  color: var(--color-signal-red);
}

.form-status[data-status="pending"] {
  color: var(--color-text-muted);
}

label {
  font-weight: 600;
}

input,
textarea {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-line-tech);
  padding: 0.7rem 0.8rem;
  background: var(--color-bg-800);
  color: var(--color-text-100);
}

.site-footer {
  margin-top: var(--space-7);
  border-top: 1px solid var(--color-line-tech);
  padding: var(--space-5) 0 var(--space-7);
}

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

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

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

  .nav-wrap {
    flex-wrap: wrap;
    padding: 0.8rem 0;
  }

  nav {
    width: 100%;
    justify-content: center;
  }
}