:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #1c2024;
  --muted: #6b7280;
  --border: #d9dce1;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --error: #b91c1c;
  --success: #15803d;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1e2126;
    --text: #e6e8eb;
    --muted: #9aa1ab;
    --border: #33373e;
    --accent: #3b82f6;
    --accent-text: #ffffff;
    --error: #f87171;
    --success: #4ade80;
  }
}

* { box-sizing: border-box; }

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

.topnav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.75rem 1.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.topnav a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
}

.topnav a:hover { color: var(--accent); }

.topnav .brand {
  font-weight: 600;
  margin-right: 0.5rem;
}

.nav-spacer { flex: 1; }

.nav-user { color: var(--muted); font-size: 0.9rem; }

.container {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

h1 { margin-top: 0; }

.form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 420px;
  margin-bottom: 1.5rem;
}

.form label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.form label.checkbox {
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
}

.form input[type="text"],
.form input[type="password"],
.form input[type="email"],
.form input[type="file"] {
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.95rem;
}

button, .button {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  text-decoration: none;
  width: fit-content;
}

button:hover, .button:hover { opacity: 0.9; }

.inline-form { display: inline-block; margin-right: 0.4rem; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  overflow-x: auto;
  display: block;
}

.data-table th, .data-table td {
  text-align: left;
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.data-table th { color: var(--muted); font-weight: 600; }

.download-row {
  display: flex;
  gap: 0.75rem;
  margin: 1rem 0;
}

.flashes {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem 0;
}

.flash {
  padding: 0.6rem 0.9rem;
  border-radius: 6px;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.flash-error { background: rgba(185, 28, 28, 0.12); color: var(--error); }
.flash-success { background: rgba(21, 128, 61, 0.12); color: var(--success); }

.tool-list { list-style: none; padding: 0; }
.tool-list li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 0.75rem;
}
.tool-list p { margin: 0.35rem 0 0 0; color: var(--muted); font-size: 0.9rem; }