:root {
  --bg: #0f1115;
  --card: #171a21;
  --text: #e8eaf0;
  --muted: #a7b0c0;
  --accent: #5ab0ff;
  --danger: #ff6b6b;
}

/* --- RESET & BASICS --- */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

/* --- HEADER / NAV --- */
nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: center;
  padding: 14px 20px;
  background: var(--card);
  border-bottom: 1px solid #222;
}

nav a {
  color: var(--text);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 8px;
  transition: background 0.2s;
}

nav a:hover {
  background: #222a;
}

/* --- LAYOUT --- */
main {
  max-width: 1100px;
  margin: 20px auto;
  padding: 0 16px;
}

.card {
  background: var(--card);
  padding: 18px;
  border-radius: 12px;
  border: 1px solid #222;
  margin: 20px auto;
  max-width: 720px;
}

h2 {
  margin-top: 0;
}

/* --- FORMS --- */
label {
  display: block;
  margin: 10px 0 6px;
  font-weight: 500;
}

input,
textarea,
select,
button {
  width: 100%;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid #333;
  background: #0e1015;
  color: var(--text);
  font-size: 15px;
}

button {
  cursor: pointer;
  background: var(--accent);
  color: #081521;
  font-weight: 600;
  border: none;
  transition: background 0.2s;
}

button:hover {
  background: #6bb9ff;
}

button.danger {
  background: var(--danger);
  color: #1a0b0b;
}

button.danger:hover {
  background: #ff8383;
}

.btn {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--accent);
  color: #081521;
  text-decoration: none;
  transition: background 0.2s;
}

.btn:hover {
  background: #6bb9ff;
}

/* --- TABLES --- */
.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

.table th,
.table td {
  border-bottom: 1px solid #222;
  padding: 8px;
  text-align: left;
}

.table th {
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table td form {
  display: inline-block;
  margin: 0 2px;
}

/* --- MESSAGES --- */
.error {
  color: #ff9c9c;
}

.success {
  color: #9cffb0;
}

/* --- FLEX ROW --- */
.row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}