:root {
  --bg: #0f1115;
  --panel: #161923;
  --panel-border: #262b3a;
  --text: #d8dce6;
  --text-dim: #8b93a7;
  --accent: #4fa3ff;
  --good: #3fbf76;
  --warn: #e0a53c;
  --bad: #e0563c;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --font-sans: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.45;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

header.site-header {
  border-bottom: 1px solid var(--panel-border);
  padding: 14px 24px;
  display: flex;
  align-items: baseline;
  gap: 24px;
  background: var(--panel);
}

header.site-header .brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}

header.site-header nav a {
  color: var(--text-dim);
  margin-right: 16px;
  font-size: 13px;
}
header.site-header nav a:hover {
  color: var(--text);
}

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px;
}

h1, h2, h3 {
  font-weight: 600;
  color: var(--text);
}
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 24px 0 12px; }
h3 { font-size: 14px; margin: 16px 0 8px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.04em; }

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 16px 20px;
  margin-bottom: 16px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  text-align: left;
  padding: 6px 10px;
  border-bottom: 1px solid var(--panel-border);
}
th {
  color: var(--text-dim);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.03em;
}
tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.stat-row {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin: 8px 0 4px;
}
.stat {
  min-width: 120px;
}
.stat .value {
  font-size: 22px;
  font-weight: 700;
  font-family: var(--font-mono);
}
.stat .label {
  color: var(--text-dim);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.badge-medium { background: rgba(79, 163, 255, 0.15); color: var(--accent); }
.badge-hard { background: rgba(224, 86, 60, 0.15); color: var(--bad); }
.badge-good { background: rgba(63, 191, 118, 0.15); color: var(--good); }
.badge-warn { background: rgba(224, 165, 60, 0.15); color: var(--warn); }
.badge-bad { background: rgba(224, 86, 60, 0.15); color: var(--bad); }
.badge-neutral { background: rgba(139, 147, 167, 0.15); color: var(--text-dim); }

form.inline-form {
  display: inline;
}

.field-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.field label {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
input, select, textarea {
  background: #0c0e13;
  border: 1px solid var(--panel-border);
  color: var(--text);
  padding: 6px 8px;
  border-radius: 4px;
  font-size: 13px;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}
input[type="number"] {
  width: 90px;
}
input[type="checkbox"] {
  width: auto;
}

button, .btn {
  background: var(--accent);
  color: #06101c;
  border: none;
  padding: 7px 14px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
}
button:hover, .btn:hover {
  filter: brightness(1.1);
  text-decoration: none;
}
.btn-secondary {
  background: transparent;
  border: 1px solid var(--panel-border);
  color: var(--text);
}
.btn-small {
  padding: 4px 10px;
  font-size: 12px;
}

.errorlist {
  color: var(--bad);
  font-size: 12px;
  list-style: none;
  padding: 0;
  margin: 2px 0;
}

.messages {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
}
.messages li {
  padding: 8px 14px;
  border-radius: 4px;
  background: rgba(63, 191, 118, 0.12);
  color: var(--good);
  margin-bottom: 6px;
  font-size: 13px;
}

.attempt-card {
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  margin-bottom: 14px;
  overflow: hidden;
}
.attempt-card > .attempt-header {
  background: rgba(255, 255, 255, 0.02);
  padding: 10px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
.attempt-card > .attempt-body {
  padding: 16px;
  border-top: 1px solid var(--panel-border);
}

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

.text-right {
  text-align: right;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 720px) {
  .grid-2 { grid-template-columns: 1fr; }
}