:root {
  --bg: #0b0f1a;
  --bg-accent: #10162a;
  --card: #151b2c;
  --card-2: #1a2236;
  --border: #26304a;
  --text: #e6ebf5;
  --muted: #8892b0;
  --accent: #7c5cff;
  --accent-2: #22d3a7;
  --danger: #ff5c7a;
  --warn: #ffb020;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1b1440 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(11, 15, 26, 0.7);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { font-weight: 800; font-size: 20px; color: var(--text); text-decoration: none; }

nav { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: 14px; }
nav a:hover { color: var(--text); }

.chip {
  background: var(--card-2);
  border: 1px solid var(--border);
  color: var(--accent-2);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 700;
}

main { flex: 1; width: 100%; max-width: 760px; margin: 0 auto; padding: 32px 20px 60px; }

footer { text-align: center; color: var(--muted); font-size: 12px; padding: 18px; border-top: 1px solid var(--border); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

h1 { font-size: 26px; margin: 0 0 8px; }
h2 { font-size: 18px; margin: 0 0 12px; }
p { color: var(--muted); line-height: 1.55; }
.p-sub { margin-top: 0; }

.btn {
  display: inline-block;
  background: var(--accent);
  border: none;
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: 10px;
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.05s ease;
}
.btn:hover { filter: brightness(1.12); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--muted); }
.btn.ghost:hover { color: var(--text); border-color: var(--muted); filter: none; }
.btn.small { padding: 6px 14px; font-size: 13px; }
.btn.green { background: var(--accent-2); color: #06281f; }

input[type="text"], input[type="email"], input[type="password"] {
  width: 100%;
  background: var(--bg-accent);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 12px 14px;
  font-size: 15px;
  margin: 6px 0 16px;
}
input:focus { outline: 2px solid var(--accent); border-color: transparent; }

label { font-size: 13px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 0.4px; }

.tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.tabs button {
  flex: 1;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-weight: 700;
  cursor: pointer;
}
.tabs button.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.error-msg {
  background: rgba(255, 92, 122, 0.12);
  border: 1px solid var(--danger);
  color: var(--danger);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 14px;
  font-size: 14px;
}

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; }
.stat { background: var(--card-2); border: 1px solid var(--border); border-radius: 12px; padding: 16px; text-align: center; }
.stat .value { font-size: 26px; font-weight: 800; color: var(--accent-2); }
.stat .label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }

.quiz-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; color: var(--muted); font-size: 14px; font-weight: 600; }
.quiz-meta .score { color: var(--accent-2); font-size: 16px; }
.progress { height: 6px; background: var(--card-2); border-radius: 999px; overflow: hidden; margin-bottom: 22px; }
.progress > div { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width 0.3s ease; }

.q-category { color: var(--accent); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 8px; }
.q-prompt { font-size: 20px; font-weight: 700; margin: 0 0 20px; color: var(--text); }

.options { display: grid; gap: 10px; }
.option {
  text-align: left;
  background: var(--card-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.12s ease;
}
.option:hover:not(:disabled) { border-color: var(--accent); }
.option:disabled { cursor: default; }
.option.correct { border-color: var(--accent-2); background: rgba(34, 211, 167, 0.14); }
.option.wrong { border-color: var(--danger); background: rgba(255, 92, 122, 0.14); }

table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; padding: 8px 10px; border-bottom: 1px solid var(--border); }
td { padding: 10px; border-bottom: 1px solid var(--border); font-size: 14px; }
tr.me td { background: rgba(124, 92, 255, 0.12); }
.rank-1 .rank { color: #ffd54a; } .rank-2 .rank { color: #cfd8e8; } .rank-3 .rank { color: #e0a06a; }

.avatar { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; border: 2px solid var(--accent); }
.avatar.placeholder {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--card-2); color: var(--accent); font-weight: 800; font-size: 16px;
  border: 2px solid var(--border);
}
.avatar.big { width: 96px; height: 96px; font-size: 34px; }

.badge {
  display: inline-block; border-radius: 999px; padding: 3px 10px;
  font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.5px;
}
.badge.ok { background: rgba(34, 211, 167, 0.15); color: var(--accent-2); }
.badge.pending { background: rgba(255, 176, 32, 0.15); color: var(--warn); }
.badge.failed { background: rgba(255, 92, 122, 0.15); color: var(--danger); }
.badge.info { background: rgba(124, 92, 255, 0.15); color: var(--accent); }

.commentary {
  border-left: 3px solid var(--accent);
  background: var(--card-2);
  border-radius: 0 12px 12px 0;
  padding: 16px 18px;
  font-style: italic;
  color: var(--text);
  margin: 16px 0;
}
.commentary .src { display: block; margin-top: 8px; font-style: normal; font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }

.profile-head { display: flex; align-items: center; gap: 18px; margin-bottom: 18px; }
.flex-between { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.muted { color: var(--muted); font-size: 13px; }
.center { text-align: center; }
.mt { margin-top: 16px; }
.loading { color: var(--muted); text-align: center; padding: 40px 0; }
.spin {
  display: inline-block; width: 22px; height: 22px; vertical-align: -6px; margin-right: 8px;
  border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.big-score { font-size: 54px; font-weight: 900; color: var(--accent-2); line-height: 1; }
.float-right { float: right; }
code.path { background: var(--bg-accent); border: 1px solid var(--border); border-radius: 6px; padding: 2px 6px; font-size: 12px; color: var(--accent-2); }