/* ==========================================================================
   Design System & Global Styles
   Modern Dark Glassmorphism with Radiant Cyber Accents
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-tertiary: #1e293b;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-glass: rgba(15, 23, 42, 0.65);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-hover: rgba(99, 102, 241, 0.35);

  /* Radiant Accents */
  --accent-primary: #6366f1;       /* Electric Indigo */
  --accent-primary-hover: #4f46e5;
  --accent-primary-glow: rgba(99, 102, 241, 0.25);
  --accent-emerald: #10b981;       /* Form Success / Emerald */
  --accent-emerald-glow: rgba(16, 185, 129, 0.25);
  --accent-cyan: #06b6d4;          /* Sky Cyan */
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  /* Typography */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', Consolas, Monaco, monospace;

  /* Shadow & Blur */
  --glass-blur: blur(16px);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 40px var(--accent-primary-glow);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 20%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 65%, rgba(6, 182, 212, 0.09) 0%, transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(16, 185, 129, 0.08) 0%, transparent 40%);
  background-attachment: fixed;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Links */
a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--text-primary);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-glass);
  padding: 0.85rem 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.brand-logo .logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-cyan));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px var(--accent-primary-glow);
}

.brand-logo .logo-icon svg {
  width: 22px;
  height: 22px;
  stroke: white;
}

.brand-badge {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  margin-left: 0.25rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.92rem;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  color: var(--text-primary);
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.2);
}

.nav-link .badge-indicator {
  font-size: 0.65rem;
  background: var(--accent-emerald);
  color: #052e16;
  font-weight: 800;
  padding: 0.1rem 0.4rem;
  border-radius: 6px;
}

.nav-privacy-tag {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.1);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

/* ==========================================================================
   Cross-Promotion Notification Banner
   ========================================================================== */
.cross-banner {
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.18), rgba(6, 182, 212, 0.18));
  border-bottom: 1px solid rgba(99, 102, 241, 0.25);
  padding: 0.6rem 1rem;
  text-align: center;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.cross-banner strong {
  color: #ffffff;
}

.cross-banner .banner-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--accent-primary);
  color: white;
  font-weight: 700;
  font-size: 0.78rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.cross-banner .banner-btn:hover {
  background: var(--accent-primary-hover);
  transform: translateY(-1px);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 3.5rem 0 2rem;
  text-align: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  color: #c7d2fe;
  margin-bottom: 1.5rem;
  backdrop-filter: var(--glass-blur);
}

.hero-pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

.hero-title {
  font-size: 2.75rem;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: #ffffff;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #a5b4fc 0%, #38bdf8 50%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 740px;
  margin: 0 auto 2rem;
  font-weight: 400;
}

.trust-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.75rem;
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.trust-item svg {
  width: 16px;
  height: 16px;
  color: var(--accent-emerald);
}

/* ==========================================================================
   Tool Workstation Glass Container
   ========================================================================== */
.tool-wrapper {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 3.5rem;
  position: relative;
  overflow: hidden;
}

.tool-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-primary), var(--accent-cyan), transparent);
}

/* ==========================================================================
   Content & SEO Sections
   ========================================================================== */
.seo-section {
  padding: 3rem 0;
  border-top: 1px solid var(--border-glass);
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 2.5rem;
}

.section-tag {
  color: var(--accent-cyan);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* Specifications Table & Cards */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.spec-card {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.spec-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-glass-hover);
}

.spec-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.spec-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
}

.spec-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.15);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.spec-list {
  list-style: none;
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.spec-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.spec-list li strong {
  color: #e2e8f0;
}

/* Step by Step Guide */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.step-card {
  background: rgba(15, 23, 42, 0.45);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.25rem;
  position: relative;
}

.step-number {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-cyan));
  color: white;
  font-weight: 800;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.step-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.step-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* FAQ Accordion */
.faq-container {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq-question svg {
  width: 20px;
  height: 20px;
  stroke: var(--text-muted);
  transition: transform var(--transition-fast);
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
  stroke: var(--accent-cyan);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  padding: 0 1.5rem;
  color: var(--text-secondary);
  font-size: 0.94rem;
  line-height: 1.65;
}

.faq-item.open .faq-answer {
  padding-bottom: 1.25rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #060911;
  border-top: 1px solid var(--border-glass);
  padding: 4rem 0 2rem;
  margin-top: 5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.2fr 1.5fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
  color: #fff;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.88rem;
}

.footer-links a {
  color: var(--text-secondary);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==========================================================================
   Notification Toast System
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  pointer-events: none;
}

.toast {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1.25rem;
  color: white;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  box-shadow: var(--shadow-md);
  pointer-events: auto;
  animation: slide-toast 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 380px;
}

.toast.success {
  border-left: 4px solid var(--accent-emerald);
}

.toast.info {
  border-left: 4px solid var(--accent-cyan);
}

.toast.warning {
  border-left: 4px solid var(--accent-amber);
}

.toast.error {
  border-left: 4px solid var(--accent-rose);
}

@keyframes slide-toast {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ==========================================================================
   Comprehensive Mobile & Tablet Responsive Enhancements
   ========================================================================== */

@media (max-width: 900px) {
  .hero-title {
    font-size: clamp(2rem, 5vw, 2.5rem);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .nav-privacy-tag {
    display: none;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 0.65rem 0;
  }

  .nav-container {
    flex-direction: column;
    gap: 0.75rem;
  }

  .nav-links {
    width: 100%;
    justify-content: center;
    gap: 0.4rem;
    overflow-x: auto;
    padding-bottom: 0.2rem;
    -webkit-overflow-scrolling: touch;
  }

  .nav-link {
    flex: 1;
    justify-content: center;
    padding: 0.65rem 0.75rem;
    font-size: 0.85rem;
    white-space: nowrap;
    min-height: 42px;
  }

  .nav-link .badge-indicator {
    display: none;
  }

  .cross-banner {
    font-size: 0.8rem;
    padding: 0.5rem 0.75rem;
    text-align: center;
  }

  .cross-banner .banner-btn {
    width: 100%;
    justify-content: center;
    margin-top: 0.35rem;
    padding: 0.45rem 1rem;
    font-size: 0.82rem;
  }

  .hero-section {
    padding: 2.25rem 0 1.5rem;
  }

  .hero-title {
    font-size: clamp(1.75rem, 6vw, 2.2rem);
    line-height: 1.25;
  }

  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: 1.5rem;
  }

  .trust-badges {
    gap: 0.85rem;
    font-size: 0.78rem;
    flex-direction: column;
    align-items: center;
  }

  .tool-wrapper {
    padding: 1.25rem 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 2.5rem;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .specs-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 0.75rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .brand-logo {
    font-size: 1.15rem;
  }

  .brand-logo .logo-icon {
    width: 32px;
    height: 32px;
  }

  .brand-logo .logo-icon svg {
    width: 18px;
    height: 18px;
  }

  .hero-pill {
    font-size: 0.75rem;
    padding: 0.3rem 0.75rem;
  }

  .hero-title {
    font-size: 1.65rem;
  }

  .hero-subtitle {
    font-size: 0.92rem;
  }

  .faq-question {
    padding: 1rem 1.15rem;
    font-size: 0.95rem;
  }

  .faq-answer {
    padding: 0 1.15rem;
    font-size: 0.88rem;
  }

  .faq-item.open .faq-answer {
    padding-bottom: 1rem;
  }

  .toast-container {
    bottom: 1rem;
    left: 1rem;
    right: 1rem;
  }
}

/* ==========================================================================
   Mobile Bottom Floating Navigation Bar
   ========================================================================== */
.mobile-bottom-bar {
  display: none !important;
}

@media (max-width: 768px) {
  body {
    padding-bottom: 64px;
  }

  .mobile-bottom-bar {
    display: flex !important;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(9, 13, 22, 0.95);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--border-glass);
    padding: 0.5rem 0.75rem;
    justify-content: space-around;
    align-items: center;
    z-index: 99;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
  }

  .mobile-bar-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-secondary);
    padding: 0.35rem 0.65rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    text-decoration: none;
  }

  .mobile-bar-item:hover,
  .mobile-bar-item.active {
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.12);
  }

  .mobile-bar-item svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
  }
}