:root {
  color-scheme: light dark;
  --bg: #fafafa;
  --surface: #ffffff;
  --text: #1a1d23;
  --muted: #5c6370;
  --accent: #4f46e5;
  --accent-contrast: #ffffff;
  --border: #e4e6eb;
  --error: #b3261e;
  --success: #1b7f4b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1117;
    --surface: #161b24;
    --text: #e8eaf0;
    --muted: #9aa3b2;
    --accent: #818cf8;
    --accent-contrast: #0e1117;
    --border: #262d3a;
    --error: #f2b8b5;
    --success: #7ee2ae;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: 42rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.hero {
  padding: 7rem 0 4rem;
}

.wordmark {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

section + section {
  border-top: 1px solid var(--border);
}

.about,
.contact {
  padding: 3.5rem 0;
}

h2 {
  margin: 0 0 1rem;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}

.about p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

form {
  display: grid;
  gap: 1.25rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

label {
  font-size: 0.9rem;
  font-weight: 600;
}

input,
textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
}

input:focus-visible,
textarea:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

textarea {
  resize: vertical;
}

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

button {
  justify-self: start;
  padding: 0.7rem 1.6rem;
  font: inherit;
  font-weight: 600;
  color: var(--accent-contrast);
  background: var(--accent);
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.08);
}

button:disabled {
  opacity: 0.6;
  cursor: wait;
}

#form-status {
  margin: 0;
  min-height: 1.5rem;
  font-size: 0.95rem;
}

#form-status.error {
  color: var(--error);
}

#form-status.success {
  color: var(--success);
}

footer {
  padding: 3rem 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

footer p {
  margin: 0;
}