/* Voltify Landing Page - Modern Glassmorphic Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800;900&display=swap');

:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --card-bg: rgba(17, 24, 39, 0.75);
  --card-border: rgba(255, 255, 255, 0.1);
  --card-hover-border: rgba(2, 132, 199, 0.5);
  
  --primary-blue: #0284c7;
  --primary-blue-glow: rgba(2, 132, 199, 0.4);
  --cyan-accent: #00e5ff;
  --emerald-accent: #10b981;
  --amber-accent: #f59e0b;
  --violet-accent: #8b5cf6;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

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

/* Background Glowing Ambient Orbs */
.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
}
.orb-1 {
  top: -100px;
  left: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(2, 132, 199, 0.3) 0%, rgba(0, 0, 0, 0) 70%);
}
.orb-2 {
  top: 600px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.25) 0%, rgba(0, 0, 0, 0) 70%);
}
.orb-3 {
  bottom: 200px;
  left: 10%;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.2) 0%, rgba(0, 0, 0, 0) 70%);
}

/* Layout Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Navigation Bar */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(11, 15, 25, 0.8);
  border-bottom: 1px solid var(--card-border);
  transition: all 0.3s ease;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(2, 132, 199, 0.4);
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(135deg, #ffffff 0%, var(--cyan-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--cyan-accent);
}

.btn-cta-nav {
  padding: 10px 22px;
  background: linear-gradient(135deg, var(--primary-blue), #0369a1);
  color: #fff !important;
  border-radius: 12px;
  font-weight: 700 !important;
  box-shadow: 0 4px 20px var(--primary-blue-glow);
  transition: all 0.3s ease !important;
}

.btn-cta-nav:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(2, 132, 199, 0.6);
}

/* Hero Section */
.hero {
  padding: 80px 0 100px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(2, 132, 199, 0.12);
  border: 1px solid rgba(2, 132, 199, 0.3);
  border-radius: 30px;
  color: var(--cyan-accent);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-badge i {
  font-size: 14px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 52px;
  line-height: 1.15;
  font-weight: 900;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-title span {
  background: linear-gradient(135deg, var(--cyan-accent) 0%, var(--primary-blue) 50%, var(--violet-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-muted);
  margin-bottom: 36px;
  font-weight: 400;
  max-width: 520px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  background: linear-gradient(135deg, var(--primary-blue), #0284c7);
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  font-size: 16px;
  border-radius: 16px;
  box-shadow: 0 8px 30px var(--primary-blue-glow);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(2, 132, 199, 0.6);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  border-radius: 16px;
  border: 1px solid var(--card-border);
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-3px);
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--card-border);
}

.stat-item h4 {
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 800;
  color: var(--cyan-accent);
}

.stat-item p {
  font-size: 13px;
  color: var(--text-muted);
}

/* Mockup Display Card */
.mockup-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-card {
  width: 330px;
  background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
  border-radius: 36px;
  padding: 16px;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.8),
              0 0 40px rgba(2, 132, 199, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.15);
  position: relative;
  z-index: 2;
  transform: perspective(1000px) rotateY(-8deg) rotateX(4deg);
  transition: transform 0.5s ease;
}

.phone-card:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.phone-screen {
  background: #090d16;
  border-radius: 26px;
  overflow: hidden;
  position: relative;
}

.phone-screen img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 20px;
}

/* App Screenshot Showcase Section */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.showcase-card {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 16px;
  transition: all 0.3s ease;
  text-align: center;
}

.showcase-card:hover {
  transform: translateY(-8px);
  border-color: var(--card-hover-border);
  box-shadow: 0 16px 40px rgba(2, 132, 199, 0.2);
}

.showcase-img {
  width: 100%;
  border-radius: 16px;
  display: block;
  margin-bottom: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.showcase-card h4 {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  color: #fff;
}

.showcase-card p {
  font-size: 12px;
  color: var(--text-muted);
}

.floating-badge-1 {
  position: absolute;
  top: 40px;
  left: -40px;
  background: rgba(17, 24, 39, 0.9);
  backdrop-filter: blur(16px);
  border: 1px solid var(--emerald-accent);
  padding: 12px 18px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 3;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  animation: floatAnim 4s ease-in-out infinite;
}

.floating-badge-2 {
  position: absolute;
  bottom: 40px;
  right: -30px;
  background: rgba(17, 24, 39, 0.9);
  backdrop-filter: blur(16px);
  border: 1px solid var(--amber-accent);
  padding: 12px 18px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 3;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  animation: floatAnim 4s ease-in-out infinite 2s;
}

@keyframes floatAnim {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* Section Common */
.section {
  padding: 90px 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 60px;
}

.section-tag {
  color: var(--cyan-accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 38px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-muted);
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 32px 28px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--card-hover-border);
  box-shadow: 0 16px 40px rgba(2, 132, 199, 0.15);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 24px;
}

.icon-blue { background: rgba(2, 132, 199, 0.15); color: var(--primary-blue); }
.icon-cyan { background: rgba(0, 229, 255, 0.15); color: var(--cyan-accent); }
.icon-emerald { background: rgba(16, 185, 129, 0.15); color: var(--emerald-accent); }
.icon-amber { background: rgba(245, 158, 11, 0.15); color: var(--amber-accent); }
.icon-violet { background: rgba(139, 92, 246, 0.15); color: var(--violet-accent); }
.icon-red { background: rgba(239, 68, 68, 0.15); color: #ef4444; }

.feature-card h3 {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Interactive Calculator Demo Section */
.demo-section {
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.5) 0%, rgba(11, 15, 25, 0.9) 100%);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  position: relative;
}

.calc-box {
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--card-border);
  border-radius: 28px;
  padding: 40px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  outline: none;
  transition: border-color 0.2s ease;
}

.form-control:focus {
  border-color: var(--primary-blue);
}

.range-slider {
  width: 100%;
  accent-color: var(--primary-blue);
}

.result-card {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.15), rgba(139, 92, 246, 0.15));
  border: 1px solid rgba(2, 132, 199, 0.4);
  border-radius: 22px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.res-cost {
  font-family: var(--font-heading);
  font-size: 36px;
  font-weight: 900;
  color: var(--cyan-accent);
  margin: 8px 0;
}

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-question {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 14px;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-icon {
  transition: transform 0.3s ease;
  color: var(--primary-blue);
}

/* Footer */
footer {
  background: #070a12;
  border-top: 1px solid var(--card-border);
  padding: 60px 0 30px;
  color: var(--text-muted);
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  margin-top: 12px;
  font-size: 13px;
  max-width: 300px;
}

.footer-title {
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--cyan-accent);
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 12px;
  color: var(--text-dim);
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero { grid-template-columns: 1fr; text-align: center; gap: 40px; }
  .hero-subtitle { margin: 0 auto 36px; }
  .hero-cta-group { justify-content: center; }
  .hero-stats { justify-content: center; }
  .mockup-wrapper { margin-top: 20px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .calc-box { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .features-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 38px; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .nav-links { display: none; }
  .phone-card { width: 290px; }
  .footer-grid { grid-template-columns: 1fr; }
}