/* ════════════════════════════════════════════════
   CALISTENIA APP v1.0.0 — CYBERPUNK EDITION v2
   ════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=Orbitron:wght@700;900&display=swap');

:root {
  /* ─── Paleta Cyberpunk ─── */
  --neon: #00ff88;
  --neon-glow: rgba(0, 255, 136, 0.4);
  --neon-dark: #00cc6a;
  --neon-bg: rgba(0, 255, 136, 0.06);
  --pink: #ff00aa;
  --pink-glow: rgba(255, 0, 170, 0.35);
  --blue: #0088ff;
  --blue-glow: rgba(0, 136, 255, 0.3);
  --danger: #ff3355;
  --danger-glow: rgba(255, 51, 85, 0.35);
  --warning: #ffaa00;
  --warning-glow: rgba(255, 170, 0, 0.3);

  /* ─── Fondos ─── */
  --bg: #04040a;
  --bg-gradient: linear-gradient(180deg, #04040a 0%, #0a0a1a 35%, #060610 100%);
  --card: rgba(10, 10, 22, 0.88);
  --card-border: rgba(0, 255, 136, 0.08);
  --card-hover: rgba(16, 16, 36, 0.95);
  --card-neon: rgba(0, 255, 136, 0.03);

  /* ─── Texto ─── */
  --text: #f0f0fa;
  --text-dim: #6a6a8a;
  --text-bright: #ffffff;
  --text-muted: #4a4a6a;

  /* ─── Bordes y formas ─── */
  --border: rgba(255, 255, 255, 0.05);
  --border-neon: rgba(0, 255, 136, 0.15);
  --radius: 14px;
  --radius-sm: 8px;

  /* ─── Sombras ─── */
  --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.6);
  --shadow-neon: 0 0 24px var(--neon-glow), 0 0 80px rgba(0, 255, 136, 0.05);
  --shadow-pink: 0 0 24px var(--pink-glow);
  --glass-blur: blur(24px);
  --transition: 0.25s cubic-bezier(0.22, 1, 0.36, 1);
  --transition-slow: 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ─── SCANLINE ─── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 255, 136, 0.008) 2px,
    rgba(0, 255, 136, 0.008) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-gradient);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.65;
  position: relative;
  font-size: 15px;
}

/* ─── PANTALLAS ─── */
.screen { display: none; opacity: 0; transition: opacity 0.35s; }
.screen.active { display: flex; opacity: 1; }
.screen.hidden { display: none; }

/* ─── BOTONES ─── */
.btn-primary {
  background: linear-gradient(135deg, var(--neon), var(--neon-dark));
  color: #04040a;
  border: none;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  font-family: 'Inter', sans-serif;
  box-shadow: 0 0 0 rgba(0, 255, 136, 0);
}
.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: var(--transition);
}
.btn-primary:hover::after { opacity: 1; }
.btn-primary:hover {
  box-shadow: var(--shadow-neon);
  transform: translateY(-2px) scale(1.01);
}
.btn-primary:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 0 12px var(--neon-glow);
}
.btn-primary:disabled {
  opacity: 0.25;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  background: var(--border);
  color: var(--text-dim);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.8px;
  text-transform: uppercase;
  font-family: 'Inter', sans-serif;
}
.btn-secondary:hover {
  border-color: var(--neon);
  color: var(--neon);
  box-shadow: 0 0 16px var(--neon-glow);
  transform: translateY(-1px);
}

.btn-sm { padding: 10px 20px; font-size: 12px; letter-spacing: 0.5px; }

/* ─── NAVBAR ─── */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(4, 4, 10, 0.9);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-neon);
  padding: 8px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
  height: 60px;
}

.nav-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  color: var(--neon);
  letter-spacing: 3px;
  text-shadow: 0 0 20px var(--neon-glow);
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-links {
  display: flex;
  gap: 2px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }

.nav-link {
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-dim);
  transition: var(--transition);
  white-space: nowrap;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  position: relative;
}
.nav-link:hover {
  color: var(--text-bright);
  background: rgba(255,255,255,0.03);
}
.nav-link.active {
  color: var(--neon);
  text-shadow: 0 0 16px var(--neon-glow);
  background: rgba(0, 255, 136, 0.04);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  width: 60%;
  height: 2px;
  background: var(--neon);
  transform: translateX(-50%);
  box-shadow: 0 0 12px var(--neon-glow);
}

/* ─── CONTENEDOR ─── */
.page-container {
  margin-top: 60px;
  padding: 24px;
  max-width: 980px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
  min-height: calc(100vh - 60px);
  min-height: calc(100dvh - 60px);
}

.page { display: none; opacity: 0; transition: opacity 0.35s, transform 0.35s; }
.page.active { display: block; opacity: 1; animation: pageIn 0.4s cubic-bezier(0.22, 1, 0.36, 1); }
.page.hidden { display: none; }

@keyframes pageIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── TARJETAS ─── */
.card {
  background: var(--card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  border-left: 3px solid var(--neon);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-card);
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--neon), transparent);
  opacity: 0.2;
}
.card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon), transparent);
  opacity: 0.05;
}
.card:hover {
  border-color: var(--border-neon);
  border-left-color: var(--neon);
  box-shadow: var(--shadow-card), 0 0 40px var(--card-neon);
  transform: translateY(-2px);
}

.card-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text-bright);
  letter-spacing: 2px;
  text-transform: uppercase;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

/* ─── BADGES ─── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  gap: 8px;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-family: 'Inter', sans-serif;
}
.badge-green {
  background: rgba(0, 255, 136, 0.06);
  color: var(--neon);
  border: 1px solid rgba(0, 255, 136, 0.12);
}
.badge-orange {
  background: rgba(255, 170, 0, 0.06);
  color: var(--warning);
  border: 1px solid rgba(255, 170, 0, 0.12);
}
.badge-red {
  background: rgba(255, 51, 85, 0.06);
  color: var(--danger);
  border: 1px solid rgba(255, 51, 85, 0.12);
}

/* ─── GRIDS ─── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* ─── INPUTS Y SELECTS ─── */
input, select, textarea {
  background: rgba(4, 4, 10, 0.85);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1.5px solid var(--border);
  color: var(--text);
  padding: 15px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  width: 100%;
  outline: none;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--neon);
  box-shadow: 0 0 0 3px var(--neon-glow), 0 0 20px rgba(0, 255, 136, 0.04);
  background: rgba(4, 4, 10, 0.96);
}
input::placeholder { color: var(--text-dim); opacity: 0.4; }

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236a6a8a' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}
select option {
  background: #0a0a1a;
  color: var(--text);
}

/* ─── SEMÁFORO ─── */
.semaforo-grid {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin: 28px 0;
}

.semaforo-btn {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 2px solid transparent;
  font-size: 32px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card);
  position: relative;
}
.semaforo-btn:hover { transform: scale(1.12); }
.semaforo-btn:active { transform: scale(0.92); }
.semaforo-btn.selected {
  transform: scale(1.1);
  border-width: 3px;
}
.semaforo-btn.green {
  background: rgba(0, 255, 136, 0.06);
  border-color: rgba(0, 255, 136, 0.15);
}
.semaforo-btn.green.selected {
  border-color: var(--neon);
  box-shadow: 0 0 30px var(--neon-glow);
}
.semaforo-btn.orange {
  background: rgba(255, 170, 0, 0.06);
  border-color: rgba(255, 170, 0, 0.15);
}
.semaforo-btn.orange.selected {
  border-color: var(--warning);
  box-shadow: 0 0 30px var(--warning-glow);
}
.semaforo-btn.red {
  background: rgba(255, 51, 85, 0.06);
  border-color: rgba(255, 51, 85, 0.15);
}
.semaforo-btn.red.selected {
  border-color: var(--danger);
  box-shadow: 0 0 30px var(--danger-glow);
}

/* ─── LOADING ─── */
.loading {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-dim);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-family: 'Inter', sans-serif;
}
.loading::before {
  content: '';
  display: block;
  width: 32px;
  height: 32px;
  margin: 0 auto 20px;
  border: 2px solid var(--border);
  border-top-color: var(--neon);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  box-shadow: 0 0 20px var(--neon-glow);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ─── DIVISORES ─── */
.neon-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon), transparent);
  margin: 24px 0;
  opacity: 0.2;
}
.neon-divider-pink {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--pink), transparent);
  margin: 24px 0;
  opacity: 0.2;
}

/* ─── GLOW TEXT ─── */
.glow-text {
  text-shadow: 0 0 24px var(--neon-glow);
}
.glow-text-pink {
  text-shadow: 0 0 24px var(--pink-glow);
}

/* ─── CORNER BORDERS ─── */
.card-corners {
  position: absolute;
  width: 14px;
  height: 14px;
  border-color: var(--neon);
  opacity: 0.2;
}
.card-corners.tl { top: -1px; left: -1px; border-top: 1px solid; border-left: 1px solid; }
.card-corners.tr { top: -1px; right: -1px; border-top: 1px solid; border-right: 1px solid; }
.card-corners.bl { bottom: -1px; left: -1px; border-bottom: 1px solid; border-left: 1px solid; }
.card-corners.br { bottom: -1px; right: -1px; border-bottom: 1px solid; border-right: 1px solid; }

/* ─── UTILITIES ─── */
.hidden { display: none !important; }

/* ─── ANIMACIÓN PULSO NEÓN ─── */
@keyframes neonPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.6; }
}

.neon-pulse {
  animation: neonPulse 3s ease-in-out infinite;
}

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-neon); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--neon); opacity: 0.6; }

/* ─── RESPONSIVE ─── */
@media (max-width: 600px) {
  .nav-bar { padding: 8px 16px; }
  .nav-title { font-size: 13px; letter-spacing: 2px; }
  .nav-links { gap: 1px; }
  .nav-link { font-size: 10px; padding: 6px 10px; letter-spacing: 0.8px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .page-container { padding: 16px; }
  .card { padding: 20px; border-radius: 12px; }
  .semaforo-btn { width: 68px; height: 68px; font-size: 28px; }
}