:root {
  --ink: #1a1f16;
  --paper: #f3efe6;
  --accent: #2f6f4e;
  --accent-ink: #ffffff;
  --muted: #5c6356;
  --line: #d7d0c3;
  --danger: #9b2c2c;
  --font-display: "Georgia", "Times New Roman", serif;
  --font-body: "Segoe UI", "Helvetica Neue", sans-serif;
}

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

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(47, 111, 78, 0.12), transparent 40%),
    linear-gradient(160deg, #f7f3ea 0%, #ebe4d6 100%);
  font-family: var(--font-body);
  line-height: 1.5;
}

a {
  color: var(--accent);
}

.brand,
.brand-mark {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--ink);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(6px);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--ink);
}

.inline-form {
  display: inline;
  margin: 0;
}

.inline-form button,
.btn {
  appearance: none;
  border: 0;
  border-radius: 0.4rem;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.65rem 1.1rem;
  font: inherit;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.inline-form button {
  background: transparent;
  color: var(--ink);
  padding: 0;
  text-decoration: underline;
}

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

.error {
  color: var(--danger);
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
}

.flash {
  background: #e5f3ea;
  border: 1px solid #b7dcc5;
  padding: 0.75rem 1rem;
  border-radius: 0.4rem;
}

.stack-form {
  display: grid;
  gap: 1rem;
  max-width: 32rem;
}

.stack-form label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
}

.stack-form input,
.stack-form textarea,
.stack-form select {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: #fff;
  font: inherit;
}

.stack-form .check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
}

.stack-form .check input {
  width: auto;
}

.hint {
  font-weight: 400;
  color: var(--muted);
  font-size: 0.9rem;
}