* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: "Manrope", "Inter", sans-serif;
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 0.6em;
}

a { color: inherit; }

img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
}

.section:last-of-type { border-bottom: none; }

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.8em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary { background: var(--accent); color: var(--accent-contrast); }
.btn-secondary { background: var(--surface-2); color: var(--text); border-color: var(--border); }
.btn-outline { background: transparent; color: var(--text); border-color: var(--accent); }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
}

.grid {
  display: grid;
  gap: 24px;
}

@media (min-width: 720px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

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

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  max-width: 1080px;
  margin: 0 auto;
}

.nav-links { display: flex; gap: 20px; align-items: center; list-style: none; margin: 0; padding: 0; }
.nav-links a { text-decoration: none; font-weight: 500; }

.brand { font-family: "Manrope", sans-serif; font-weight: 800; text-decoration: none; }

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.theme-toggle .icon-light { display: none; }
:root[data-theme="light"] .theme-toggle .icon-dark { display: none; }
:root[data-theme="light"] .theme-toggle .icon-light { display: inline; }

.field { margin-bottom: 16px; }
.field label { display: block; margin-bottom: 6px; font-weight: 500; font-size: 0.9rem; }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.field-hidden-hp { position: absolute; left: -9999px; opacity: 0; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--surface-2);
  border: 1px solid var(--border);
}

.footer {
  padding: 40px 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.flash {
  padding: 14px 18px;
  border-radius: 12px;
  margin-bottom: 20px;
}
.flash-ok { background: color-mix(in srgb, #2fae5c 20%, var(--surface)); }
.flash-error { background: color-mix(in srgb, #c0392b 20%, var(--surface)); }