/* =========================================
   PROTEC — DESIGN SYSTEM UNIFICADO
   ========================================= */

/* 1. VARIABLES GLOBALES (Fusión de todas tus variables) */
:root {
  --bg-dark: #0a192f;
  --bg-deep: #010814;
  --bg-card: #112240;
  --bg-hover: #172a45;
  --border: #233554;
  --text-primary: #ccd6f6;
  --text-muted: #8892b0;
  --accent: #64ffda; /* Color principal cyan original */
  --accent-blue: #0066ff;
  --accent-dim: rgba(100, 255, 218, 0.1);
  --glass: rgba(17, 34, 64, 0.6);
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Orbitron', monospace;
  --radius: 8px;
  --shadow: 0 10px 30px -10px rgba(2, 12, 27, 0.7);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. RESET & BASE */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-main);
  background-color: var(--bg-dark) !important; /* Fuerza el fondo oscuro en TODAS las páginas */
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }

/* 3. TYPOGRAPHY */
h1, h2, h3, h4 { color: var(--text-primary); line-height: 1.2; margin-bottom: 0.75rem; }
h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }
p { color: var(--text-muted); margin-bottom: 1rem; }
.accent { color: var(--accent); }

/* 4. LAYOUT & UTILITIES */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 5rem 0; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 2rem; }
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mb-2 { margin-bottom: 2rem; }

/* 5. NAVIGATION (Cyber-Tech) */
nav {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(1, 8, 20, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0.8rem 0;
  transition: var(--transition);
}
nav.scrolled { background: rgba(1, 8, 20, 0.98); box-shadow: 0 4px 30px rgba(0,0,0,0.5); }

.nav-inner { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: 700; color: var(--accent); letter-spacing: 0.5px; display: flex; align-items: center; gap: 10px; }

.nav-links { display: flex; gap: 1.5rem; align-items: center; }
.nav-link {
  color: var(--text-primary); font-size: 0.95rem; font-weight: 500;
  position: relative; padding: 0.5rem 0; transition: color 0.3s;
}
.nav-link::after {
  content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%) scaleX(0);
  width: 80%; height: 2px; background: var(--accent); transition: transform 0.3s ease;
  box-shadow: 0 0 10px var(--accent);
}
.nav-link:hover, .nav-link:hover::after { color: var(--accent); transform: translateX(-50%) scaleX(1); }

.cyber-btn {
  background: transparent; color: var(--accent); border: 1px solid var(--accent);
  padding: 0.6rem 1.2rem; border-radius: 6px; font-weight: 600; font-size: 0.85rem;
  text-transform: uppercase; letter-spacing: 0.5px; transition: var(--transition);
  position: relative; overflow: hidden; cursor: pointer;
}
.cyber-btn::before {
  content: ''; position: absolute; inset: 0; background: var(--accent); opacity: 0; transition: opacity 0.3s; z-index: 0;
}
.cyber-btn span { position: relative; z-index: 1; }
.cyber-btn:hover { color: var(--bg-deep); box-shadow: 0 0 20px rgba(0, 245, 255, 0.5); transform: translateY(-2px); }
.cyber-btn:hover::before { opacity: 1; }

.mobile-toggle { display: none; background: none; border: none; color: var(--accent); font-size: 1.5rem; cursor: pointer; }

/* 6. HERO SECTION */
.hero {
  min-height: 85vh; display: flex; align-items: center; justify-content: center;
  text-align: center; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -20%; left: 50%; transform: translateX(-50%);
  width: 800px; height: 400px; background: radial-gradient(circle, var(--accent-dim) 0%, transparent 70%);
  pointer-events: none; z-index: -1;
}
.hero h1 span { color: var(--accent); }
.hero p { max-width: 650px; margin: 0 auto 2rem; font-size: 1.1rem; }

/* 7. CARDS & PRICING */
.card {
  background: var(--bg-card); padding: 2rem; border-radius: var(--radius);
  border: 1px solid var(--border); transition: var(--transition);
  display: flex; flex-direction: column; height: 100%;
}
.card:hover { transform: translateY(-6px); border-color: var(--accent); box-shadow: var(--shadow); }

.price { font-size: 1.8rem; font-weight: 700; color: var(--accent); margin: 0.75rem 0; line-height: 1; }
.price span { font-size: 0.9rem; color: var(--text-muted); font-weight: 400; }

.card ul { margin: 1rem 0 1.5rem; flex-grow: 1; }
.card li { margin-bottom: 0.6rem; color: var(--text-muted); padding-left: 1.2rem; position: relative; }
.card li::before { content: '✓'; position: absolute; left: 0; color: var(--accent); font-weight: 600; }

/* 8. BUTTONS */
.btn {
  display: inline-block; padding: 0.75rem 1.5rem; border-radius: var(--radius);
  font-weight: 600; font-size: 0.95rem; text-align: center; cursor: pointer; transition: var(--transition); border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: var(--bg-dark); border-color: var(--accent); }
.btn-primary:hover { background: transparent; color: var(--accent); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn-outline:hover { background: var(--accent-dim); transform: translateY(-2px); }
.btn-nav { padding: 0.5rem 1rem; font-size: 0.85rem; }

/* 9. FORMS */
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block; margin-bottom: 0.4rem; color: var(--accent); font-size: 0.85rem;
  font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px;
}
input, select, textarea {
  width: 100%; padding: 0.85rem 1rem; border-radius: var(--radius);
  background: var(--bg-dark); border: 1px solid var(--border); color: var(--text-primary);
  font-family: inherit; font-size: 0.95rem; transition: var(--transition);
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim);
}
textarea { resize: vertical; min-height: 100px; }

/* 10. ADMIN TABLES */
table {
  width: 100%; border-collapse: collapse; margin: 1.5rem 0; background: var(--bg-card);
  border-radius: var(--radius); overflow: hidden;
}
th, td { padding: 1rem; text-align: left; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
th {
  color: var(--accent); font-weight: 600; text-transform: uppercase; font-size: 0.8rem;
  letter-spacing: 0.5px; background: var(--bg-hover);
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(100, 255, 218, 0.03); }
.status-ok { color: #10b981; font-weight: 500; }
.status-warn { color: #f59e0b; font-weight: 500; }

/* 11. FOOTER CYBER-TECH */
footer {
  background: var(--bg-deep); padding: 5rem 0 2rem; border-top: 1px solid var(--border);
  margin-top: 4rem; position: relative; z-index: 10;
}

.neon-divider {
  height: 1px; background: linear-gradient(90deg, transparent, var(--accent), var(--accent-blue), var(--accent), transparent);
  position: relative; box-shadow: 0 0 10px var(--accent), 0 0 20px var(--accent-blue); margin: 2rem 0;
}
.neon-divider::before {
  content: ''; position: absolute; top: -2px; left: 50%; transform: translateX(-50%);
  width: 100px; height: 5px; background: var(--accent); border-radius: 50%; filter: blur(8px);
  animation: scanLine 3s ease-in-out infinite;
}
@keyframes scanLine {
  0%, 100% { opacity: 0.3; transform: translateX(-50%) scaleX(0.8); }
  50% { opacity: 1; transform: translateX(-50%) scaleX(1.2); }
}

.glass {
  background: var(--glass); backdrop-filter: blur(10px);
  border: 1px solid rgba(100, 255, 218, 0.2); width: 36px; height: 36px;
  border-radius: 8px; display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.glass:hover {
  border-color: var(--accent); transform: translateY(-3px); box-shadow: 0 0 20px rgba(0, 245, 255, 0.3);
}
.glass:hover svg { color: var(--accent) !important; filter: drop-shadow(0 0 8px var(--accent)); }

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); opacity: 1; }
  50% { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); opacity: 0.8; }
}

footer a:hover { color: var(--accent) !important; text-shadow: 0 0 10px rgba(0, 245, 255, 0.5); }

/* 12. RESPONSIVE */
@media (max-width: 900px) {
  .nav-links { display: none !important; }
  .mobile-toggle { display: block !important; }
}
@media (max-width: 1024px) { .footer-grid { grid-template-columns: repeat(2, 1fr) !important; } }
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr !important; text-align: center; }
  .footer-grid ul { display: flex; flex-direction: column; align-items: center; }
  .footer-grid li { justify-content: center !important; }
}
@media (max-width: 768px) {
  .nav-inner { flex-direction: column; gap: 1rem; }
  .nav-links { flex-wrap: wrap; justify-content: center; gap: 1rem; }
  .hero { min-height: 70vh; padding: 4rem 0; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .card { padding: 1.5rem; }
  section { padding: 3rem 0; }
}
/* Agrega esto a tu styles.css */
.filter-btn {
    background: var(--bg-card); color: var(--text-muted); border: 1px solid var(--border);
    padding: 8px 20px; border-radius: 20px; cursor: pointer; font-weight: 500; transition: 0.3s;
}
.filter-btn:hover, .filter-btn.active {
    background: var(--accent); color: var(--bg-dark); border-color: var(--accent);
}

/* Estilo para precios en oferta */
.price-container { margin: 10px 0; }
.price-original {
    text-decoration: line-through; color: #ff5a5a; font-size: 0.9rem; font-weight: 400;
    margin-right: 10px;
}
.price-final {
    font-size: 1.8rem; font-weight: 700; color: var(--accent);
}
.badge-oferta {
    position: absolute; top: -10px; right: 10px; background: #ff5a5a; color: white;
    padding: 4px 8px; font-size: 0.7rem; font-weight: bold; border-radius: 4px;
}/* Estilos para filtros de dos niveles */
.type-btn, .brand-btn {
    background: var(--bg-card);
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}

.type-btn:hover, .brand-btn:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.type-btn.active, .brand-btn.active {
    background: var(--accent);
    color: var(--bg-dark);
    border-color: var(--accent);
    box-shadow: 0 0 15px rgba(0, 245, 255, 0.3);
}

/* Ocultar sección de marcas cuando no hay selección de tipo */
#filtroMarcas {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}