/* ==========================================
   NEURAL HOME AUTOMATION - DESIGN SYSTEM
   ========================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* ---- CSS Variables ---- */
:root {
  --primary: #00d4ff;
  --primary-dark: #0099cc;
  --primary-glow: rgba(0, 212, 255, 0.25);
  --secondary: #7c3aed;
  --secondary-glow: rgba(124, 58, 237, 0.25);
  --accent: #06ffa5;
  --dark-bg: #050a14;
  --dark-surface: #0a1628;
  --dark-card: #0f1e35;
  --dark-border: rgba(0, 212, 255, 0.12);
  --text-primary: #f0f6ff;
  --text-secondary: #8ba3c7;
  --text-muted: #4a6080;
  --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
  --gradient-dark: linear-gradient(180deg, #050a14 0%, #0a1628 100%);
  --font-primary: 'Inter', sans-serif;
  --font-display: 'Space Grotesk', sans-serif;
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-height: 80px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-primary);
  background: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark-bg); }
::-webkit-scrollbar-thumb { background: var(--primary-dark); border-radius: 3px; }

/* ==========================================
   NAVIGATION
   ========================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: var(--transition);
  padding: 0 2rem;
}

.navbar.scrolled {
  background: rgba(5, 10, 20, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--dark-border);
  box-shadow: var(--shadow-glow);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
}

.nav-logo .logo-icon {
  width: 42px;
  height: 42px;
  background: var(--gradient-primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 0 20px var(--primary-glow);
}

.nav-logo .logo-text { color: var(--text-primary); }
.nav-logo .logo-text span { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
  padding-bottom: 4px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-cta {
  background: var(--gradient-primary);
  color: var(--dark-bg) !important;
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  transition: var(--transition);
  box-shadow: 0 4px 20px var(--primary-glow);
}

.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 30px var(--primary-glow); }
.nav-cta::after { display: none !important; }

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Nav */
.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 0;
  background: rgba(5, 10, 20, 0.98);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--dark-border);
  padding: 1rem 0;
}

.nav-mobile a {
  padding: 0.85rem 2rem;
  color: var(--text-secondary);
  font-weight: 500;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: var(--transition);
}

.nav-mobile a:hover, .nav-mobile a.active { color: var(--primary); background: rgba(0,212,255,0.05); }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-mobile.open { display: flex; }
  .navbar { padding: 0 1.25rem; position: fixed; top: 0; left: 0; right: 0; }
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
  background: var(--dark-surface);
  border-top: 1px solid var(--dark-border);
  padding: 4rem 2rem 2rem;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 1rem;
  max-width: 280px;
  line-height: 1.8;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.social-btn {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
  cursor: pointer;
}

.social-btn:hover { background: var(--primary); color: var(--dark-bg); border-color: var(--primary); transform: translateY(-2px); }

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}

.footer-col ul { display: flex; flex-direction: column; gap: 0.75rem; }

.footer-col ul li a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: var(--transition);
}

.footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }

.footer-bottom {
  border-top: 1px solid var(--dark-border);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p { color: var(--text-muted); font-size: 0.8rem; }
.footer-bottom a { color: var(--primary); }

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ==========================================
   COMMON COMPONENTS
   ========================================== */

/* Section */
.section { padding: 6rem 2rem; }
.section-sm { padding: 4rem 2rem; }

.container {
  max-width: 1280px;
  margin: 0 auto;
}

/* Section Header */
.section-header { text-align: center; margin-bottom: 4rem; }

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  color: var(--primary);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-title .highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.8;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-family: var(--font-primary);
  position: relative;
  z-index: 1;
  pointer-events: auto;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--dark-bg);
  box-shadow: 0 4px 25px var(--primary-glow);
}

.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 40px var(--primary-glow); }

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn-outline:hover { background: var(--primary); color: var(--dark-bg); transform: translateY(-3px); }

.btn-ghost {
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
  border: 1px solid var(--dark-border);
}

.btn-ghost:hover { background: rgba(0,212,255,0.1); border-color: var(--primary); color: var(--primary); }

/* Card */
.card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.03) 0%, transparent 60%);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

.card:hover { border-color: rgba(0,212,255,0.35); transform: translateY(-4px); box-shadow: var(--shadow-card), 0 0 30px rgba(0,212,255,0.08); }
.card:hover::before { opacity: 1; }

/* Grid layouts */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 4rem 1.25rem; }
}

/* Tags */
.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.tag-primary { background: rgba(0,212,255,0.12); color: var(--primary); border: 1px solid rgba(0,212,255,0.25); }
.tag-secondary { background: rgba(124,58,237,0.12); color: #a78bfa; border: 1px solid rgba(124,58,237,0.25); }
.tag-accent { background: rgba(6,255,165,0.1); color: var(--accent); border: 1px solid rgba(6,255,165,0.2); }

/* Icon Box */
.icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: linear-gradient(135deg, rgba(0,212,255,0.15), rgba(124,58,237,0.1));
  border: 1px solid rgba(0,212,255,0.2);
  margin-bottom: 1.25rem;
}

/* Stat */
.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Page Header */
.page-hero {
  padding-top: calc(var(--nav-height) + 4rem);
  padding-bottom: 4rem;
  padding-left: 2rem;
  padding-right: 2rem;
  text-align: center;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(0,212,255,0.08) 0%, transparent 70%);
  position: relative;
}

.page-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.page-hero-desc {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.8;
}

/* Divider */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--dark-border), transparent);
  margin: 0 auto;
}

/* Glow dots */
.glow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 12px var(--primary);
  display: inline-block;
}

/* ==========================================
   ANIMATIONS
   ========================================== */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px var(--primary-glow); }
  50% { box-shadow: 0 0 40px rgba(0,212,255,0.4); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes rotate-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.animate-float { animation: float 4s ease-in-out infinite; }
.animate-pulse-glow { animation: pulse-glow 2.5s ease-in-out infinite; }
.animate-fade-up { animation: fadeInUp 0.7s ease forwards; }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger delays */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* ==========================================
   NOISE TEXTURE OVERLAY
   ========================================== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1;
  opacity: 0.4;
}

/* ==========================================
   CONTACT FORM
   ========================================== */
.form-group { margin-bottom: 1.25rem; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.875rem 1.25rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary);
  background: rgba(0,212,255,0.04);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.1);
}

.form-group textarea { resize: vertical; min-height: 120px; }

.form-group select option { background: var(--dark-card); }

/* ==========================================
   CONTACT POPUP MODAL
   ========================================== */
.contact-popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 10, 20, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 99000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-popup-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.contact-popup {
  background: var(--dark-card);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem 2rem;
  width: 100%;
  max-width: 400px;
  position: relative;
  box-shadow:
    0 0 0 1px rgba(0, 212, 255, 0.06),
    0 32px 80px rgba(0, 0, 0, 0.6),
    0 0 60px rgba(0, 212, 255, 0.08);
  transform: translateY(24px) scale(0.96);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
  opacity: 0;
}

.contact-popup-overlay.open .contact-popup {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* Top gradient accent bar */
.contact-popup::before {
  content: '';
  position: absolute;
  top: 0;
  left: 2rem;
  right: 2rem;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 0 0 2px 2px;
}

.contact-popup-close {
  position: absolute;
  top: 1.1rem;
  right: 1.1rem;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-border);
  color: var(--text-secondary);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  line-height: 1;
}

.contact-popup-close:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.15);
  transform: rotate(90deg);
}

.contact-popup-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(124, 58, 237, 0.15));
  border: 1px solid rgba(0, 212, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1.25rem;
}

.contact-popup-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.contact-popup-subtitle {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.contact-popup-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-popup-btn {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--dark-border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  font-family: var(--font-primary);
  width: 100%;
  font-size: 0.95rem;
  position: relative;
  overflow: hidden;
}

.contact-popup-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.contact-popup-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* WhatsApp button */
.contact-popup-btn.btn-whatsapp {
  border-color: rgba(37, 211, 102, 0.3);
}
.contact-popup-btn.btn-whatsapp::before {
  background: linear-gradient(135deg, rgba(37, 211, 102, 0.08), rgba(37, 211, 102, 0.04));
}
.contact-popup-btn.btn-whatsapp:hover {
  border-color: rgba(37, 211, 102, 0.6);
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.12);
}
.contact-popup-btn.btn-whatsapp:hover::before { opacity: 1; }

.contact-popup-btn.btn-whatsapp .cpb-icon {
  background: linear-gradient(135deg, #25d366, #128c7e);
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

/* Phone button */
.contact-popup-btn.btn-phone {
  border-color: rgba(0, 212, 255, 0.2);
}
.contact-popup-btn.btn-phone::before {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(124, 58, 237, 0.04));
}
.contact-popup-btn.btn-phone:hover {
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.1);
}
.contact-popup-btn.btn-phone:hover::before { opacity: 1; }

.contact-popup-btn.btn-phone .cpb-icon {
  background: var(--gradient-primary);
  box-shadow: 0 4px 12px rgba(0, 212, 255, 0.25);
}

.cpb-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.cpb-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.cpb-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: 1;
  margin-bottom: 0.2rem;
}

.cpb-value {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.contact-popup-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0.25rem 0;
  color: var(--text-muted);
  font-size: 0.75rem;
}

.contact-popup-divider::before,
.contact-popup-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--dark-border);
}

@media (max-width: 480px) {
  .contact-popup {
    padding: 2rem 1.5rem 1.75rem;
    border-radius: var(--radius-lg);
  }
}