:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --border: #e0e0e0;
  --accent: #2f5fd1;
  --own: #7a4fc7;
  --shared: #1c8a5a;
  --error: #b3261e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #ededed;
    --muted: #a0a0a0;
    --border: #2c2c2c;
    --accent: #7fa2ff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}

body.centered {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-box {
  width: 100%;
  max-width: 360px;
  padding: 2rem;
}

.login-box h1 { margin-bottom: 0.25rem; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.brand {
  font-weight: 600;
  color: var(--fg);
  text-decoration: none;
}

.who { color: var(--muted); margin-right: 0.75rem; }

.linklike {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font: inherit;
  padding: 0;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

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

form label {
  display: block;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

input {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  font-size: 1rem;
}

button[type="submit"] {
  width: 100%;
  padding: 0.6rem;
  border: none;
  border-radius: 6px;
  background: var(--accent);
  color: white;
  font-size: 1rem;
  cursor: pointer;
}

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

.card-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  margin-top: 1.5rem;
}

.card {
  display: block;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--fg);
}

.card h2 { margin: 0.5rem 0 0; }

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  color: white;
}

.badge-own { background: var(--own); }
.badge-shared { background: var(--shared); }

.back {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--accent);
  text-decoration: none;
}

.project-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.project-head h1 { margin: 0; }

.source-note {
  color: var(--muted);
  font-size: 0.9rem;
  border-left: 3px solid var(--border);
  padding-left: 0.75rem;
  margin: 1rem 0 1.5rem;
}

.field { margin-bottom: 1.25rem; }
.field h3 { margin: 0 0 0.25rem; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--muted); }
.field p { margin: 0; }