/* ==========================================================================
   Autoroid Modern Cyber-Glassmorphic Stylesheet
   ========================================================================== */

:root {
  --bg-dark: #070a12;
  --bg-surface: #0e1424;
  --card-glass: rgba(18, 25, 41, 0.72);
  --card-glass-hover: rgba(24, 34, 56, 0.85);
  --card-border: rgba(0, 229, 255, 0.14);
  --card-border-hover: rgba(0, 229, 255, 0.38);

  --color-cyan: #00E5FF;
  --color-cyan-glow: rgba(0, 229, 255, 0.35);
  --color-green: #2EE59D;
  --color-green-glow: rgba(46, 229, 157, 0.35);
  --color-blue: #00A3FF;
  --color-purple: #A855F7;
  --color-amber: #F59E0B;
  --color-red: #FF3B30;

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Ambient Background Glow */
.ambient-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
}

.glow-top {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, var(--color-cyan) 0%, rgba(0, 163, 255, 0) 70%);
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
}

.glow-middle {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-green) 0%, rgba(46, 229, 157, 0) 70%);
  top: 1400px;
  right: -150px;
  opacity: 0.25;
}

.glow-bottom {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-purple) 0%, rgba(168, 85, 247, 0) 70%);
  bottom: 300px;
  left: -100px;
  opacity: 0.25;
}

/* Typography & Helpers */
.gradient-text {
  background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-cyan {
  color: var(--color-cyan);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px;
  position: relative;
  z-index: 1;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-cyan);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
  line-height: 1.25;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.08rem;
  line-height: 1.6;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: linear-gradient(135deg, var(--color-cyan) 0%, #00B4D8 100%);
  color: #050b14;
  font-weight: 700;
  border-radius: var(--radius-full);
  padding: 14px 28px;
  transition: var(--transition-smooth);
  border: 1px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
  box-shadow: 0 4px 20px var(--color-cyan-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 229, 255, 0.55);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  font-weight: 600;
  border-radius: var(--radius-full);
  padding: 14px 28px;
  transition: var(--transition-smooth);
  border: 1px solid var(--card-border);
  cursor: pointer;
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.88rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

.btn-label-group {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.btn-main-text {
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.2;
}

.btn-sub-text {
  font-size: 0.75rem;
  font-weight: 500;
  opacity: 0.85;
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 4px 25px var(--color-cyan-glow);
  }
  50% {
    box-shadow: 0 4px 38px rgba(0, 229, 255, 0.7);
  }
}

.pulse-glow {
  animation: pulseGlow 3s infinite ease-in-out;
}

/* Glass Card */
.glass-card {
  background: var(--card-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.glass-card:hover {
  border-color: var(--card-border-hover);
  transform: translateY(-4px);
  background: var(--card-glass-hover);
}

/* Navigation Bar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 10, 18, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 9px;
}

.brand-text-block {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.1em;
  color: var(--text-primary);
}

.brand-sub {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-cyan);
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.94rem;
  color: var(--text-secondary);
  font-weight: 500;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-github {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-github:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.04);
}

/* Hero Section */
.hero-section {
  position: relative;
  z-index: 1;
  padding: 80px 24px 70px;
  text-align: center;
}

.hero-container {
  max-width: 880px;
  margin: 0 auto;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.25);
  padding: 6px 18px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-cyan);
  margin-bottom: 28px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--color-green);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.22rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 40px;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.trust-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.trust-item strong {
  color: var(--text-primary);
}

/* Carriers Section */
.carriers-section {
  position: relative;
  z-index: 1;
  padding: 80px 0;
  background: linear-gradient(180deg, transparent 0%, rgba(14, 20, 36, 0.5) 100%);
}

.security-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(46, 229, 157, 0.08);
  border: 1px solid rgba(46, 229, 157, 0.28);
  padding: 7px 20px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-green);
  margin-bottom: 20px;
  box-shadow: 0 0 16px rgba(46, 229, 157, 0.12);
}

.carrier-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.carrier-card {
  background: var(--card-glass);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
}

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

.carrier-card.highlighted {
  border-color: rgba(46, 229, 157, 0.4);
  box-shadow: 0 0 25px rgba(46, 229, 157, 0.12);
}

.carrier-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 18px;
}

.carrier-brand-info {
  flex: 1;
}

.carrier-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  flex-shrink: 0;
}

.carrier-badge.verified {
  background: rgba(0, 229, 255, 0.12);
  color: var(--color-cyan);
  border: 1px solid rgba(0, 229, 255, 0.3);
}

.carrier-badge.popular {
  background: rgba(46, 229, 157, 0.15);
  color: var(--color-green);
  border: 1px solid rgba(46, 229, 157, 0.35);
}

.carrier-name {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 3px;
  line-height: 1.2;
}

.carrier-tech {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.carrier-card-footer {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.secure-tag {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--color-green);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.carrier-features {
  margin-top: 12px;
}

.carrier-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.carrier-features .check {
  color: var(--color-green);
  font-weight: bold;
}

/* Feature Cards Grid */
.features-section {
  position: relative;
  z-index: 1;
  padding: 90px 0;
}

.feature-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 26px;
}

.feature-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 18px 0 10px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.feature-icon-wrapper {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon-wrapper.cyan {
  background: rgba(0, 229, 255, 0.1);
  color: var(--color-cyan);
  border: 1px solid rgba(0, 229, 255, 0.25);
}

.feature-icon-wrapper.green {
  background: rgba(46, 229, 157, 0.1);
  color: var(--color-green);
  border: 1px solid rgba(46, 229, 157, 0.25);
}

.feature-icon-wrapper.purple {
  background: rgba(168, 85, 247, 0.1);
  color: var(--color-purple);
  border: 1px solid rgba(168, 85, 247, 0.25);
}

.feature-icon-wrapper.blue {
  background: rgba(0, 163, 255, 0.1);
  color: var(--color-blue);
  border: 1px solid rgba(0, 163, 255, 0.25);
}

.feature-icon-wrapper.amber {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-amber);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.feature-icon-wrapper.red {
  background: rgba(255, 59, 48, 0.1);
  color: var(--color-red);
  border: 1px solid rgba(255, 59, 48, 0.25);
}

.card-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.card-pills span {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
}

/* Setup Guide Section */
.setup-section {
  position: relative;
  z-index: 1;
  padding: 90px 0;
  background: rgba(10, 14, 24, 0.6);
}

.tab-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.tab-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.25);
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--color-cyan) 0%, #00B4D8 100%);
  color: #050b14;
  border-color: transparent;
  box-shadow: 0 4px 18px var(--color-cyan-glow);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.step-card {
  background: var(--card-glass);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
}

.step-number {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--color-cyan);
  opacity: 0.6;
  margin-bottom: 14px;
}

.step-card h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Supported Devices Grid */
.devices-section {
  position: relative;
  z-index: 1;
  padding: 70px 0;
}

.devices-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 900px;
  margin: 0 auto;
}

.device-pill {
  background: var(--card-glass);
  border: 1px solid var(--card-border);
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.device-pill:hover {
  border-color: var(--color-cyan);
  transform: translateY(-2px);
}

.device-pill.highlight {
  background: rgba(0, 229, 255, 0.1);
  border-color: rgba(0, 229, 255, 0.4);
  color: var(--color-cyan);
}

/* FAQ Accordion */
.faq-section {
  position: relative;
  z-index: 1;
  padding: 90px 0;
}

.faq-container {
  max-width: 820px;
}

.accordion {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--card-glass);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: var(--transition-fast);
  cursor: pointer;
}

.faq-item[open] {
  border-color: var(--card-border-hover);
  background: var(--card-glass-hover);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-chevron {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--color-cyan);
  transition: var(--transition-fast);
}

.faq-item[open] .faq-chevron {
  transform: rotate(45deg);
}

.faq-answer {
  padding-top: 14px;
  color: var(--text-secondary);
  font-size: 0.96rem;
  line-height: 1.65;
}

/* CTA Banner */
.cta-banner {
  position: relative;
  z-index: 1;
  padding: 80px 0;
}

.cta-card {
  background: linear-gradient(135deg, rgba(14, 20, 36, 0.9) 0%, rgba(18, 30, 54, 0.9) 100%);
  border: 1px solid rgba(0, 229, 255, 0.35);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0, 229, 255, 0.12);
}

.cta-title {
  font-size: 2.4rem;
  font-weight: 900;
  margin-bottom: 14px;
}

.cta-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 36px;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  position: relative;
  z-index: 1;
  padding: 70px 0 30px;
  background: #04070c;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

.footer-brand {
  max-width: 340px;
}

.footer-desc {
  margin-top: 14px;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 60px;
  flex-wrap: wrap;
}

.footer-col h4 {
  font-size: 0.92rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
  color: var(--text-primary);
}

.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.disclaimer {
  max-width: 500px;
  font-size: 0.78rem;
}

/* Responsiveness */
@media (max-width: 900px) {
  .hero-title {
    font-size: 2.6rem;
  }
  .nav-links {
    display: none;
  }
  .section-title {
    font-size: 1.9rem;
  }
  .cta-title {
    font-size: 1.9rem;
  }
  .cta-card {
    padding: 40px 20px;
  }
}

@media (max-width: 600px) {
  .hero-title {
    font-size: 2.1rem;
  }
  .hero-subtitle {
    font-size: 1.02rem;
  }
  .btn-lg {
    width: 100%;
  }
  .hero-cta {
    flex-direction: column;
    width: 100%;
  }
  .trust-strip {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-links {
    gap: 30px;
  }
}