/* ============================================================
   LUISPINTASOLUTIONS — Tokens de diseño compartidos
   ============================================================ */
:root {
  --lps-navy-950: #0a1628;
  --lps-navy-900: #0f2038;
  --lps-navy-800: #16304f;
  --lps-navy-700: #1f4066;
  --lps-navy-600: #2a5480;
  --lps-gold-500: #c9a227;
  --lps-gold-400: #dab848;
  --lps-gold-300: #e8cd75;

  /* Tema unico: oscuro. No hay alternancia claro/oscuro en esta app. */
  --bg: #0a1220;
  --bg-elevated: #101d30;
  --bg-card: #131f34;
  --text: #eef1f6;
  --text-muted: #9aa7ba;
  --border: #223351;
  --accent: var(--lps-gold-500);
  --accent-strong: var(--lps-gold-400);
  --gold: var(--lps-gold-500);
  --success: #35c375;
  --success-bg: #113322;
  --danger: #ef6d5a;
  --danger-bg: #3a1c18;
  --warning: #e0aa3f;
  --warning-bg: #3a2c12;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.45), 0 3px 8px rgba(0, 0, 0, 0.3);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 20px;
  --font-sans: "Segoe UI", -apple-system, BlinkMacSystemFont, "Inter", Roboto, Helvetica, Arial, sans-serif;
}

[hidden] { display: none !important; }
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  min-height: 100%;
  background:
    radial-gradient(1100px 620px at 12% -10%, rgba(201, 162, 39, 0.08), transparent 60%),
    radial-gradient(900px 700px at 100% 0%, rgba(31, 64, 102, 0.35), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  color-scheme: dark;
}
button { font-family: inherit; }

.lps-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.lps-btn i { font-size: 0.92em; }
.lps-btn:hover { box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); transform: translateY(-1px); }
.lps-btn:active { transform: translateY(0) scale(0.97); }
.lps-btn-primary {
  background: linear-gradient(135deg, var(--lps-gold-500), var(--lps-gold-400));
  color: #1a1400;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(201, 162, 39, 0.22);
}
.lps-btn-primary:hover { box-shadow: 0 6px 18px rgba(201, 162, 39, 0.3); }
.lps-btn-gold {
  background: linear-gradient(135deg, var(--lps-gold-400), var(--lps-gold-500));
  color: #1a1400;
  border-color: transparent;
}
.lps-btn[disabled] { opacity: 0.5; cursor: default; transform: none !important; box-shadow: none !important; }
.lps-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: box-shadow 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
}
.lps-card-interactive { cursor: pointer; }
.lps-card-interactive:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}
.icon-tile {
  width: 46px; height: 46px; border-radius: 13px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: #1a1400;
  background: linear-gradient(135deg, var(--lps-gold-500), var(--lps-gold-400));
  box-shadow: 0 4px 10px rgba(201, 162, 39, 0.2);
}
.icon-tile--estudio { background: linear-gradient(135deg, #5b9dff, #3b7de0); color: #fff; box-shadow: 0 4px 10px rgba(59, 125, 224, 0.28); }
.icon-tile--examen { background: linear-gradient(135deg, var(--lps-gold-500), var(--lps-gold-400)); color: #1a1400; box-shadow: 0 4px 10px rgba(201, 162, 39, 0.22); }
.icon-tile--reto { background: linear-gradient(135deg, #ff8a65, #ef5a4c); color: #fff; box-shadow: 0 4px 10px rgba(239, 90, 76, 0.26); }
.icon-tile--diario { background: linear-gradient(135deg, #34c9a3, #1fa885); color: #062e24; box-shadow: 0 4px 10px rgba(31, 168, 133, 0.24); }
.icon-tile--repaso { background: linear-gradient(135deg, #b78af0, #8c5cd6); color: #fff; box-shadow: 0 4px 10px rgba(140, 92, 214, 0.26); }
.lps-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 700; letter-spacing: 0.02em;
  padding: 4px 10px; border-radius: 999px;
  background: var(--warning-bg); color: var(--warning);
}
.lps-progressbar {
  height: 8px; border-radius: 999px; background: var(--border); overflow: hidden;
}
.lps-progressbar > div {
  height: 100%; background: linear-gradient(90deg, var(--lps-gold-500), var(--lps-gold-400));
  transition: width 0.25s ease;
}

.lps-option {
  display: flex; align-items: center; gap: 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  cursor: pointer;
  background: var(--bg-elevated);
  transition: border-color 0.12s ease, background 0.12s ease, transform 0.08s ease;
}
.lps-option:hover { border-color: var(--accent); }
.lps-option:active { transform: scale(0.99); }
.lps-option.selected { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--bg-elevated)); }
.lps-option.correct { border-color: var(--success); background: var(--success-bg); }
.lps-option.wrong { border-color: var(--danger); background: var(--danger-bg); }
.lps-option .letra {
  width: 28px; height: 28px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 13px;
  background: var(--border); color: var(--text);
  flex-shrink: 0;
}
.lps-option.selected .letra { background: var(--accent); color: #fff; }
.lps-option.correct .letra { background: var(--success); color: #fff; }
.lps-option.wrong .letra { background: var(--danger); color: #fff; }

.chip-row { display:flex; gap: 8px; flex-wrap: wrap; }
.chip {
  padding: 8px 14px; border-radius: 999px; border: 1.5px solid var(--border);
  cursor: pointer; font-size: 13.5px; font-weight: 700; background: var(--bg-elevated);
  color: var(--text);
}
.chip.selected { border-color: var(--accent); background: var(--accent); color: #fff; }
.field { margin-bottom: 16px; }
.field label { display:block; font-size: 13px; font-weight: 700; margin-bottom: 6px; }

.feedback-note {
  margin-top: 16px; padding: 14px 16px; border-radius: var(--radius-sm);
  font-size: 13.5px; line-height: 1.5; border: 1.5px solid transparent;
}
.feedback-note.ok { background: var(--success-bg); color: var(--success); border-color: color-mix(in srgb, var(--success) 35%, transparent); }
.feedback-note.bad { background: var(--danger-bg); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 35%, transparent); }
.feedback-note b { display:block; margin-bottom: 4px; font-size: 13px; letter-spacing: 0.02em; text-transform: uppercase; }

.lives-hearts { font-size: 14px; letter-spacing: 5px; color: var(--danger); }

.lps-logo {
  font-weight: 900; letter-spacing: 0.01em;
  background: linear-gradient(135deg, var(--lps-gold-500), var(--lps-gold-300));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}