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

:root {
  --bg: #f8f8f7;
  --surface: #ffffff;
  --text: #1a1a1a;
  --text-secondary: #555555;
  --accent: #1a3a5c;
  --border: #e0e0e0;
  --radius: 4px;
  --max-width: 820px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Hero ── */
.hero {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 4rem 0 3.5rem;
}

.hero h1 {
  font-size: 2.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--accent);
  margin-bottom: 0.35rem;
}

.hero .title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.hero .subtitle {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ── Schwerpunkte ── */
.schwerpunkte {
  padding: 3.5rem 0;
}

.schwerpunkte h2,
.kontakt h2 {
  font-size: 1.125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
}

.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ── Kontakt ── */
.kontakt {
  padding: 3.5rem 0 4rem;
  border-top: 1px solid var(--border);
}

form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 540px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
}

input,
select,
textarea {
  font-family: inherit;
  font-size: 0.925rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.75rem;
  width: 100%;
  transition: border-color 0.15s;
  appearance: none;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

button[type="submit"] {
  align-self: flex-start;
  font-family: inherit;
  font-size: 0.925rem;
  font-weight: 500;
  color: #ffffff;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  padding: 0.65rem 1.5rem;
  cursor: pointer;
  transition: background 0.15s;
}

button[type="submit"]:hover {
  background: #14304d;
}

button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-status {
  font-size: 0.875rem;
  min-height: 1.25rem;
}

.form-status.success {
  color: #2a7a3b;
}

.form-status.error {
  color: #b72b2b;
}

/* ── Footer ── */
footer {
  padding: 1.75rem 0;
  border-top: 1px solid var(--border);
}

footer p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}