/* ============================================
   Strategy Platform — Human Minimalist Design
   ZeroOne D.O.T.S AI
   ============================================ */

:root {
  --bg: #0a0a0a;
  --surface: #111111;
  --surface-2: #1a1a1a;
  --surface-3: #222222;
  --border: #2a2a2a;
  --border-hover: #3a3a3a;
  --text: #e5e5e5;
  --text-muted: #888888;
  --text-dim: #555555;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.1);
  --green: #22c55e;
  --green-dim: rgba(34, 197, 94, 0.12);
  --red: #ef4444;
  --red-dim: rgba(239, 68, 68, 0.12);
  --yellow: #eab308;
  --yellow-dim: rgba(234, 179, 8, 0.12);
  --blue: #3b82f6;
  --radius: 8px;
  --radius-lg: 12px;
  --mono: "SF Mono", "Fira Code", "JetBrains Mono", monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* LOGIN PAGE */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
}

.login-box .logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-box .logo h1 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}

.login-box .logo span {
  color: var(--accent);
}

.login-box .logo p {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 10px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
  font-family: var(--sans);
  transition: border-color 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  font-family: var(--sans);
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #000;
  width: 100%;
  margin-top: 8px;
}

.btn-primary:hover { opacity: 0.9; }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border);
}

.btn-ghost:hover {
  border-color: var(--border-hover);
  color: var(--text);
}

.login-error {
  color: var(--red);
  font-size: 13px;
  text-align: center;
  margin-top: 12px;
  display: none;
}

.lock-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--accent-dim);
  border-radius: 50%;
  margin: 0 auto 16px;
  font-size: 20px;
}

/* NAV */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.nav-brand {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.nav-brand span { color: var(--accent); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-user {
  font-size: 13px;
  color: var(--text-muted);
}

/* MAIN LAYOUT */
.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px;
}

.page-header {
  margin-bottom: 32px;
}

.page-header h2 {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.page-header p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 4px;
}

/* STATS GRID */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.stat-card .label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.stat-card .value {
  font-size: 22px;
  font-weight: 600;
  font-family: var(--mono);
}

.stat-card .value.positive { color: var(--green); }
.stat-card .value.negative { color: var(--red); }
.stat-card .value.neutral { color: var(--text); }

/* LEADERBOARD TABLE */
.leaderboard {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.leaderboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.leaderboard-header h3 {
  font-size: 15px;
  font-weight: 600;
}

.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead th {
  padding: 10px 16px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  text-align: left;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

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

tbody tr {
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.15s;
}

tbody tr:hover { background: var(--surface-2); }
tbody tr:last-child { border-bottom: none; }

tbody td {
  padding: 12px 16px;
  font-size: 13px;
  white-space: nowrap;
}

tbody td.right { text-align: right; }
tbody td.mono { font-family: var(--mono); font-size: 12px; }

.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  font-family: var(--mono);
}

.rank-1 { background: linear-gradient(135deg, #fbbf24, #f59e0b); color: #000; }
.rank-2 { background: linear-gradient(135deg, #9ca3af, #6b7280); color: #000; }
.rank-3 { background: linear-gradient(135deg, #d97706, #b45309); color: #000; }
.rank-other { background: var(--surface-3); color: var(--text-muted); }

.status-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.status-active { background: var(--green-dim); color: var(--green); }
.status-review { background: var(--yellow-dim); color: var(--yellow); }
.status-inactive { background: var(--red-dim); color: var(--red); }

.pnl-positive { color: var(--green); font-weight: 600; }
.pnl-negative { color: var(--red); font-weight: 600; }

/* STRATEGY DETAIL PAGE */
.strategy-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 20px;
  flex-wrap: wrap;
}

.strategy-title h2 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.strategy-meta {
  display: flex;
  gap: 16px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.meta-tag {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--surface-2);
  padding: 3px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.section {
  margin-bottom: 24px;
}

.section h3 {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.rules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}

.rule-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.rule-card .rule-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.rule-card .rule-text {
  font-size: 13px;
  line-height: 1.5;
}

.code-block {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
  color: var(--text-muted);
  max-height: 400px;
}

.indicator-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.indicator-tag {
  background: var(--accent-dim);
  color: var(--accent);
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

/* BACK LINK */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  margin-bottom: 20px;
  transition: color 0.2s;
}

.back-link:hover { color: var(--accent); }

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav { padding: 12px 16px; }
  .main { padding: 20px 16px; }
  .login-box { padding: 32px 24px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* FOOTER */
.footer {
  text-align: center;
  padding: 24px;
  font-size: 12px;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
  margin-top: 48px;
}