/* Google Fonts loaded via <link> in HTML head for performance */

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

:root {
  --black:  #000000;
  --white:  #ffffff;
  --gray-1: #f5f5f5;
  --gray-2: #e8e8e8;
  --gray-3: #b0b0b0;
  --gray-4: #666666;
  --gray-5: #222222;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --max: 1080px;
  --radius: 4px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--white);
  color: var(--black);
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.7rem 1.6rem;
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  border-radius: var(--radius);
  transition: background 0.18s, color 0.18s, border-color 0.18s;
  border: 1px solid transparent;
}

.btn-solid {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}
.btn-solid:hover { background: var(--gray-5); border-color: var(--gray-5); }

.btn-outline {
  background: transparent;
  color: var(--black);
  border-color: var(--black);
}
.btn-outline:hover { background: var(--black); color: var(--white); }

section { padding: 6rem 0; }