/* Sistemix — styles */
:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel2: #334155;
  --accent: #38bdf8;
  --accent2: #818cf8;
  --ok: #34d399;
  --err: #f87171;
  --warn: #fbbf24;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --gold: #fbbf24;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--panel2);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.5px;
}

.user-info {
  font-size: 14px;
  color: var(--muted);
}

#mainContent {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

/* ── Cards / Panels ── */
.card {
  background: var(--panel);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
  border: 1px solid var(--panel2);
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.card-sub {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
}

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  background: var(--panel2);
  color: var(--text);
}

.btn:hover { filter: brightness(1.15); }

.btn-primary { background: var(--accent); color: #0f172a; }
.btn-success { background: var(--ok); color: #0f172a; }
.btn-danger  { background: var(--err); color: #fff; }
.btn-warn    { background: var(--warn); color: #0f172a; }
.btn-ghost   { background: transparent; border: 1px solid var(--panel2); }

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── Levels ── */
.level-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.level-card {
  background: var(--panel);
  border: 1px solid var(--panel2);
  border-radius: 10px;
  padding: 14px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s;
}

.level-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.level-card.locked { opacity: 0.45; cursor: not-allowed; }
.level-card.locked:hover { border-color: var(--panel2); transform: none; }
.level-card.active { border-color: var(--accent); box-shadow: 0 0 12px rgba(56,189,248,0.2); }

.level-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.level-name { font-size: 13px; font-weight: 600; color: var(--text); }
.level-desc { font-size: 11px; color: var(--muted); margin-top: 4px; }
.level-progress { font-size: 11px; color: var(--gold); margin-top: 6px; }

/* ── Scenario list ── */
.scenario-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--panel);
  border: 1px solid var(--panel2);
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.15s;
}

.scenario-item:hover { border-color: var(--accent); }
.scenario-item .status { font-size: 18px; width: 24px; text-align: center; }
.scenario-item .title { flex: 1; font-size: 14px; }
.scenario-item .xp { color: var(--gold); font-size: 12px; font-weight: 600; }
.scenario-item .cat { font-size: 11px; color: var(--muted); background: var(--panel2); padding: 2px 8px; border-radius: 10px; }

/* ── Engine (build chain) ── */
.chain-area {
  min-height: 320px;
  background: var(--panel);
  border: 1px dashed var(--panel2);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

.chain-slot {
  min-height: 48px;
  border: 2px dashed var(--panel2);
  border-radius: 8px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  padding: 6px 10px;
  gap: 8px;
  transition: all 0.15s;
}

.chain-slot.hover { border-color: var(--accent); background: rgba(56,189,248,0.08); }
.chain-slot.filled { border-style: solid; border-color: var(--panel2); background: var(--panel2); }

.slot-cat {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 6px;
  color: #0f172a;
  white-space: nowrap;
}

.slot-cat.trigger   { background: #fbbf24; }
.slot-cat.condicion { background: #a78bfa; }
.slot-cat.accion    { background: #34d399; }
.slot-cat.dato      { background: #38bdf8; }

.slot-text { font-size: 13px; flex: 1; }
.slot-remove { background: none; border: none; color: var(--err); font-size: 16px; cursor: pointer; }

/* Block palette */
.block-palette {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.block-chip {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 12px;
  cursor: grab;
  user-select: none;
  border: 1px solid var(--panel2);
  transition: all 0.15s;
  color: #0f172a;
  font-weight: 600;
}

.block-chip:hover { transform: translateY(-2px); box-shadow: 0 2px 8px rgba(0,0,0,0.3); }
.block-chip.trigger   { background: #fbbf24; }
.block-chip.condicion { background: #a78bfa; }
.block-chip.accion    { background: #34d399; }
.block-chip.dato      { background: #38bdf8; }
.block-chip.used { opacity: 0.25; cursor: not-allowed; }

/* Check button */
.check-area { text-align: center; margin: 12px 0; }

/* Feedback */
.feedback {
  padding: 14px 16px;
  border-radius: 8px;
  margin: 12px 0;
  font-size: 14px;
  line-height: 1.5;
}

.feedback.ok { background: rgba(52,211,153,0.12); border: 1px solid var(--ok); color: var(--ok); }
.feedback.err { background: rgba(248,113,113,0.12); border: 1px solid var(--err); color: var(--err); }
.feedback.warn { background: rgba(251,191,36,0.12); border: 1px solid var(--warn); color: var(--warn); }

/* Header in scenario */
.scenario-header { margin-bottom: 20px; }
.scenario-header h2 { font-size: 22px; margin-bottom: 6px; }
.scenario-header .desc { color: var(--muted); font-size: 14px; line-height: 1.5; }

/* Progress bars */
.progress-bar {
  height: 6px;
  background: var(--panel2);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 8px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 3px;
  transition: width 0.3s;
}

/* XP / stats */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.stat-box {
  background: var(--panel);
  border: 1px solid var(--panel2);
  border-radius: 10px;
  padding: 14px;
  text-align: center;
}

.stat-value { font-size: 22px; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 11px; color: var(--muted); margin-top: 4px; }

/* Badges */
.badge-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge {
  background: var(--panel);
  border: 1px solid var(--panel2);
  border-radius: 10px;
  padding: 12px;
  text-align: center;
  min-width: 110px;
}

.badge.locked { opacity: 0.35; }
.badge .icon { font-size: 28px; }
.badge .name { font-size: 12px; margin-top: 6px; font-weight: 600; }

/* Auth */
.auth-box {
  max-width: 380px;
  margin: 60px auto;
  background: var(--panel);
  border: 1px solid var(--panel2);
  border-radius: 14px;
  padding: 28px;
}

.auth-box h1 { font-size: 24px; margin-bottom: 4px; color: var(--accent); }
.auth-box p.sub { color: var(--muted); font-size: 13px; margin-bottom: 20px; }

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 5px; }
.field input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--panel2);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
}
.field input:focus { outline: none; border-color: var(--accent); }

.auth-switch { text-align: center; margin-top: 14px; font-size: 13px; color: var(--muted); }
.auth-switch a { color: var(--accent); cursor: pointer; }

.hidden { display: none !important; }

/* Toast */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--panel2);
  color: var(--text);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 13px;
  z-index: 999;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
  animation: toastIn 0.2s ease;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Responsive */
@media (max-width: 600px) {
  #mainContent { padding: 16px 10px 60px; }
  .level-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
}