/* =========================================
   Battery Power Z LLC — Main Stylesheet
   Electric Blue Theme
   ========================================= */

:root {
  --blue-primary:   #007AFF;
  --blue-dark:      #0052CC;
  --blue-deeper:    #003A99;
  --blue-electric:  #00AAFF;
  --blue-glow:      rgba(0,122,255,0.4);
  --bg-dark:        #080C18;
  --bg-panel:       #0D1525;
  --bg-card:        #111827;
  --chrome-light:   #E0E0E0;
  --chrome-mid:     #BDBDBD;
  --yellow:         #FFD700;
  --yellow-light:   #FFE44D;
  --text-primary:   #F0F4FF;
  --text-muted:     #8BA3C8;
  --border:         rgba(0,122,255,0.25);
  --gradient-hero:  linear-gradient(135deg, #050A18 0%, #0A1A3A 50%, #050A18 100%);
}

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

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

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--blue-electric); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--yellow); }

img { max-width: 100%; height: auto; }

h1, h2, h3, h4, h5 {
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

/* ---- Grid / Container ---- */
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.section { padding: 90px 0; }
.section--sm { padding: 60px 0; }

/* =========================================
   NAVIGATION
   ========================================= */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 24px;
  background: rgba(8,12,24,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo img { height: 52px; width: auto; }

.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 8px 16px;
  border-radius: 6px;
  transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--yellow);
  background: rgba(255,215,0,0.08);
}

.nav-cta {
  background: var(--blue-primary) !important;
  color: #fff !important;
  border-radius: 8px !important;
  padding: 10px 20px !important;
}
.nav-cta:hover { background: var(--blue-dark) !important; color: #fff !important; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}
.nav-toggle span {
  display: block;
  width: 26px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* =========================================
   HERO
   ========================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--gradient-hero);
  overflow: hidden;
  padding-top: 72px;
}

/* Animated grid background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,122,255,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,122,255,0.07) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0%   { background-position: 0 0; }
  100% { background-position: 60px 60px; }
}

/* Radial glow */
.hero::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(0,122,255,0.18) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content { position: relative; z-index: 2; max-width: 860px; padding: 40px 24px; }

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--yellow);
  background: rgba(255,215,0,0.1);
  border: 1px solid rgba(255,215,0,0.3);
  padding: 6px 18px;
  border-radius: 20px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  color: var(--text-primary);
  margin-bottom: 20px;
  text-shadow: 0 0 60px rgba(0,122,255,0.5);
}

.hero h1 span {
  background: linear-gradient(135deg, var(--blue-electric), var(--yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto 40px;
}

.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* =========================================
   BUTTONS
   ========================================= */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  cursor: pointer;
  border: none;
  transition: all 0.25s;
  text-align: center;
}

.btn-primary {
  background: var(--blue-primary);
  color: #fff;
  box-shadow: 0 0 30px rgba(0,122,255,0.4);
}
.btn-primary:hover {
  background: var(--blue-electric);
  color: #fff;
  box-shadow: 0 0 50px rgba(0,170,255,0.6);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--blue-electric);
  color: var(--blue-electric);
  transform: translateY(-2px);
}

.btn-yellow {
  background: var(--yellow);
  color: #0A0E1A;
  font-weight: 800;
}
.btn-yellow:hover {
  background: var(--yellow-light);
  color: #0A0E1A;
  box-shadow: 0 0 40px rgba(255,215,0,0.4);
  transform: translateY(-2px);
}

/* =========================================
   SECTION HEADERS
   ========================================= */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue-electric);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto;
}

.text-center { text-align: center; }

/* =========================================
   CARDS
   ========================================= */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px 32px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue-electric), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.card:hover {
  border-color: var(--blue-primary);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,122,255,0.2);
}

.card:hover::before { opacity: 1; }

.card-icon {
  width: 64px; height: 64px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 1.8rem;
  background: rgba(0,122,255,0.12);
  border: 1px solid rgba(0,122,255,0.25);
}

.card h3 {
  font-size: 1.3rem;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.card p { color: var(--text-muted); font-size: 0.95rem; }

/* =========================================
   GRID LAYOUTS
   ========================================= */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* =========================================
   STATS / HIGHLIGHTS
   ========================================= */
.stats-bar {
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 48px 0;
}

.stat-item { text-align: center; }

.stat-num {
  font-size: 2.4rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--blue-electric), var(--yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 4px;
}

/* =========================================
   FEATURE SPLIT (image + text)
   ========================================= */
.feature-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.feature-split.reverse { direction: rtl; }
.feature-split.reverse > * { direction: ltr; }

.feature-visual {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 360px;
  position: relative;
}

.feature-visual svg, .feature-visual .big-icon {
  font-size: 8rem;
  opacity: 0.85;
}

.feature-text h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--text-primary);
  margin-bottom: 16px;
}

.feature-text p { color: var(--text-muted); margin-bottom: 20px; }

.feature-list { list-style: none; margin-bottom: 28px; }
.feature-list li {
  padding: 8px 0;
  color: var(--text-muted);
  display: flex;
  gap: 12px;
  align-items: flex-start;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.feature-list li::before {
  content: '⚡';
  color: var(--yellow);
  flex-shrink: 0;
  margin-top: 2px;
}

/* =========================================
   PRODUCT PAGE — TABS
   ========================================= */
.product-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}

.tab-btn {
  padding: 14px 28px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.2s;
  letter-spacing: 0.03em;
  margin-bottom: -1px;
}

.tab-btn:hover { color: var(--blue-electric); }
.tab-btn.active {
  color: var(--yellow);
  border-bottom-color: var(--yellow);
}

.tab-panel { display: none; animation: fadeIn 0.3s ease; }
.tab-panel.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =========================================
   DEVELOPMENT PAGE — TIMELINE
   ========================================= */
.timeline { position: relative; padding: 20px 0; }

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--blue-primary), var(--blue-electric));
}

.timeline-item {
  display: flex;
  gap: 48px;
  align-items: flex-start;
  margin-bottom: 56px;
  position: relative;
}

.timeline-item:nth-child(odd) { flex-direction: row-reverse; }
.timeline-item:nth-child(odd) .timeline-content { text-align: right; }

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--yellow);
  border: 3px solid var(--bg-dark);
  box-shadow: 0 0 16px rgba(255,215,0,0.6);
  z-index: 2;
  top: 8px;
}

.timeline-content {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
}

.timeline-content h4 {
  color: var(--blue-electric);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}

.timeline-content h3 {
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.timeline-content p { color: var(--text-muted); font-size: 0.95rem; }

/* =========================================
   PARTNER LOGOS
   ========================================= */
.partner-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}

.partner-badge {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 28px;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.partner-badge:hover {
  border-color: var(--blue-electric);
  color: var(--blue-electric);
}

/* =========================================
   CONTACT PAGE
   ========================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-form .form-group { margin-bottom: 20px; }

.contact-form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  border-color: var(--blue-primary);
  box-shadow: 0 0 0 3px rgba(0,122,255,0.2);
}

.contact-form textarea { height: 140px; resize: vertical; }

.location-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 20px;
  transition: border-color 0.2s;
}

.location-card:hover { border-color: var(--blue-primary); }

.location-card h4 {
  color: var(--blue-electric);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}

.location-card h3 { font-size: 1.1rem; color: var(--text-primary); margin-bottom: 10px; }
.location-card p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.8; }

/* =========================================
   ABOUT PAGE
   ========================================= */
.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 28px;
  text-align: center;
  transition: all 0.3s;
}

.team-card:hover {
  border-color: var(--blue-primary);
  transform: translateY(-4px);
}

.team-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-primary), var(--blue-electric));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 20px;
}

.team-card h3 { font-size: 1.1rem; color: var(--text-primary); margin-bottom: 4px; }
.team-card .role { color: var(--blue-electric); font-size: 0.85rem; font-weight: 600; margin-bottom: 12px; }
.team-card p { color: var(--text-muted); font-size: 0.9rem; }

/* =========================================
   CERT / BADGE STRIP
   ========================================= */
.cert-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.cert-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

.cert-badge span { font-size: 1.1rem; }

/* =========================================
   PAGE HERO (inner pages)
   ========================================= */
.page-hero {
  padding: 140px 0 80px;
  text-align: center;
  background: linear-gradient(180deg, #050A18 0%, #0A1630 100%);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,122,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,122,255,0.06) 1px, transparent 1px);
  background-size: 50px 50px;
}

.page-hero-content { position: relative; z-index: 2; }

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: var(--text-primary);
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* =========================================
   FOOTER
   ========================================= */
.footer {
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 16px 0 24px;
  max-width: 260px;
}

.footer-col h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color 0.2s;
}
.footer-col ul a:hover { color: var(--blue-electric); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--blue-electric); }

/* =========================================
   HIGHLIGHT BAND
   ========================================= */
.highlight-band {
  background: linear-gradient(135deg, var(--blue-deeper), var(--blue-primary));
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.highlight-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255,215,0,0.08) 0%, transparent 60%);
  pointer-events: none; /* allow clicks to pass through to elements below */
  z-index: 0;
}

.highlight-band h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.highlight-band p {
  color: rgba(255,255,255,0.75);
  font-size: 1.05rem;
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
}

.highlight-band .btn {
  position: relative;
  z-index: 1;
}

/* =========================================
   ALERT / TOAST
   ========================================= */
.form-success {
  display: none;
  padding: 16px 20px;
  background: rgba(0,122,255,0.1);
  border: 1px solid var(--blue-primary);
  border-radius: 10px;
  color: var(--blue-electric);
  font-weight: 600;
  margin-top: 16px;
}

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .timeline::before { left: 28px; }
  .timeline-item,
  .timeline-item:nth-child(odd) { flex-direction: column; padding-left: 60px; }
  .timeline-item:nth-child(odd) .timeline-content { text-align: left; }
  .timeline-dot { left: 28px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: rgba(8,12,24,0.97); padding: 20px 24px; border-bottom: 1px solid var(--border); gap: 4px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .feature-split { grid-template-columns: 1fr; gap: 36px; }
  .feature-split.reverse { direction: ltr; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-bar .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .product-tabs { gap: 4px; }
  .tab-btn { padding: 10px 16px; font-size: 0.85rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .stats-bar .grid-4 { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 280px; }
}

/* =========================================
   UTILITIES
   ========================================= */
.mt-8  { margin-top: 8px;  }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-40 { margin-bottom: 40px; }

.text-yellow { color: var(--yellow); }
.text-blue   { color: var(--blue-electric); }
.text-muted  { color: var(--text-muted); }

.gradient-text {
  background: linear-gradient(135deg, var(--blue-electric), var(--yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Inline SVG bolt used in pages */
.bolt-inline { display: inline-block; vertical-align: middle; }

/* Loading bar animation */
.skill-bar { background: rgba(255,255,255,0.06); border-radius: 4px; height: 6px; margin-top: 8px; overflow: hidden; }
.skill-fill { height: 100%; border-radius: 4px; background: linear-gradient(90deg, var(--blue-primary), var(--blue-electric)); animation: fillBar 1.5s ease forwards; }
@keyframes fillBar { from { width: 0; } }