/* =========================================================================
   MeshTalker Storefront — main.css
   Deep navy + cyan/green + electric blue + violet-blue theme.
   ========================================================================= */

:root {
  --color-bg: #000920;
  --color-bg-deep: #00081f;
  --color-bg-elevated: #030d2b;
  --color-primary: #00fab7;       /* cyan-green */
  --color-secondary: #00e0fd;     /* electric blue */
  --color-tertiary: #5647fc;      /* violet-blue */
  --color-text: #ffffff;
  --color-text-muted: #9fb3c8;
  --color-border: rgba(0, 250, 183, 0.18);
  --glass-bg: rgba(6, 20, 48, 0.55);
  --glass-border: rgba(0, 224, 253, 0.16);
  --shadow-glow: 0 0 40px rgba(0, 250, 183, 0.15);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --max-width: 1200px;
  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-med: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------------------------------------------------------------------
   Reset & base
   --------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-bg);
  background-image:
    radial-gradient(ellipse at 20% -10%, rgba(86, 71, 252, 0.18), transparent 55%),
    radial-gradient(ellipse at 85% 10%, rgba(0, 224, 253, 0.12), transparent 50%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='84' height='96' viewBox='0 0 84 96'%3E%3Cg fill='none' stroke='%2300fab7' stroke-opacity='0.05' stroke-width='1'%3E%3Cpath d='M42 0 L84 24 L84 72 L42 96 L0 72 L0 24 Z'/%3E%3C/g%3E%3C/svg%3E");
  background-attachment: fixed, fixed, fixed;
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 0.6em; font-weight: 700; }
p { margin: 0 0 1em; color: var(--color-text-muted); }
a { color: var(--color-secondary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-primary); }
ul { padding-inline-start: 1.2em; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary) 55%, var(--color-tertiary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

section { position: relative; padding: 96px 0; }
section.tight { padding: 64px 0; }

.section-header { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-header h2 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); }
.section-header p { font-size: 1.05rem; }

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
  font-weight: 600;
}

/* ---------------------------------------------------------------------
   Glassmorphism cards
   --------------------------------------------------------------------- */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  transition: transform var(--transition-med), box-shadow var(--transition-med), border-color var(--transition-med);
  will-change: transform;
}
.glass-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 250, 183, 0.4);
  box-shadow: var(--shadow-glow), 0 20px 40px rgba(0, 0, 0, 0.4);
}

/* ---------------------------------------------------------------------
   Header / Nav
   --------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 1000;
  background: rgba(0, 8, 31, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.2rem; color: var(--color-text); }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.brand span.brand-accent { color: var(--color-primary); }

.nav-links { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; }
.nav-links a { color: var(--color-text); font-weight: 500; font-size: 0.95rem; }
.nav-links a:hover { color: var(--color-primary); }

.nav-actions { display: flex; align-items: center; gap: 14px; }

.nav-toggle { display: none; background: none; border: none; color: var(--color-text); font-size: 1.6rem; }

/* Language switcher */
.lang-switcher { position: relative; }
.lang-switcher-btn {
  display: flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  color: var(--color-text);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}
.lang-switcher-btn:hover { border-color: var(--color-primary); }
.lang-menu {
  position: absolute;
  inset-inline-end: 0;
  top: calc(100% + 8px);
  background: var(--color-bg-elevated);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
  padding: 8px;
  min-width: 190px;
  max-height: 340px;
  overflow-y: auto;
  display: none;
  z-index: 1100;
}
.lang-menu.open { display: block; }
.lang-menu button {
  display: flex; align-items: center; gap: 10px; width: 100%;
  background: none; border: none; color: var(--color-text);
  padding: 8px 10px; border-radius: var(--radius-sm); font-size: 0.9rem;
  text-align: start;
}
.lang-menu button:hover, .lang-menu button.active { background: rgba(0,250,183,0.1); color: var(--color-primary); }

/* ---------------------------------------------------------------------
   Buttons
   --------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(120deg, var(--color-primary), var(--color-secondary));
  color: #001018;
  box-shadow: 0 6px 24px rgba(0, 250, 183, 0.3);
}
.btn-primary:hover { box-shadow: 0 10px 30px rgba(0, 250, 183, 0.45); color: #001018; }
.btn-outline {
  background: transparent;
  border-color: var(--glass-border);
  color: var(--color-text);
}
.btn-outline:hover { border-color: var(--color-secondary); color: var(--color-secondary); }
.btn-violet {
  background: linear-gradient(120deg, var(--color-tertiary), var(--color-secondary));
  color: #ffffff;
  box-shadow: 0 6px 24px rgba(86, 71, 252, 0.35);
}
.btn-violet:hover { color: #fff; box-shadow: 0 10px 30px rgba(86, 71, 252, 0.5); }
.btn-lg { padding: 16px 32px; font-size: 1rem; }
.btn[disabled] { opacity: 0.6; cursor: not-allowed; transform: none; }

.cta-row { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 36px; }

/* ---------------------------------------------------------------------
   Hero
   --------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  overflow: hidden;
}
.hero-canvas-layer {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero-canvas-layer canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

.aurora-glow {
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(circle at 30% 30%, rgba(0, 250, 183, 0.25), transparent 40%),
    radial-gradient(circle at 70% 60%, rgba(0, 224, 253, 0.2), transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(86, 71, 252, 0.25), transparent 45%);
  filter: blur(60px);
  animation: aurora-shift 18s ease-in-out 1 forwards;
  z-index: 0;
}
@keyframes aurora-shift {
  0% { transform: translate3d(0,0,0) scale(1); }
  50% { transform: translate3d(2%, -3%, 0) scale(1.08); }
  100% { transform: translate3d(-3%, 2%, 0) scale(1); }
}

.hero-content { position: relative; z-index: 2; max-width: 780px; margin: 0 auto; text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(0, 250, 183, 0.08);
  border: 1px solid var(--color-border);
  padding: 8px 16px; border-radius: 999px;
  font-size: 0.82rem; color: var(--color-primary); margin-bottom: 24px;
}
.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 12px var(--color-primary);
  animation: pulse-dot 2s ease-in-out 3 forwards;
}
@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

.hero h1 { font-size: clamp(2.2rem, 5.5vw, 4rem); margin-bottom: 20px; }
.hero .subheadline { font-size: clamp(1rem, 1.6vw, 1.25rem); max-width: 620px; margin: 0 auto 8px; }
.hero .cta-row { justify-content: center; }

.hero-mesh-icon {
  position: relative;
  width: 120px; height: 120px;
  margin: 0 auto 32px;
}

/* ---------------------------------------------------------------------
   Feature grids / cards
   --------------------------------------------------------------------- */
.grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.feature-card { padding: 30px; }
.feature-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(0,250,183,0.18), rgba(0,224,253,0.1));
  border: 1px solid var(--color-border);
  margin-bottom: 18px;
  font-size: 1.5rem;
}
.feature-card h3 { font-size: 1.15rem; }
.feature-card p { font-size: 0.95rem; margin-bottom: 0; }

/* ---------------------------------------------------------------------
   Security detail sections (zero-db, e2e, rest, transit, certificates)
   --------------------------------------------------------------------- */
.detail-section { padding: 80px 0; }
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.detail-grid.reverse { direction: rtl; }
.detail-grid.reverse > * { direction: ltr; }
[dir="rtl"] .detail-grid.reverse { direction: ltr; }
.detail-visual {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}
.detail-visual canvas { width: 100%; height: 100%; }
.detail-points { list-style: none; padding: 0; margin: 24px 0 0; }
.detail-points li {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 10px 0;
  color: var(--color-text);
  font-size: 0.98rem;
  border-bottom: 1px dashed rgba(255,255,255,0.08);
}
.detail-points li::before {
  content: "";
  flex: none;
  width: 8px; height: 8px; margin-top: 8px;
  border-radius: 2px;
  background: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary);
  transform: rotate(45deg);
}
.alt-bg { background: linear-gradient(180deg, rgba(86,71,252,0.05), transparent); }

/* Triple layer */
.layer-stack { display: flex; flex-direction: column; gap: 18px; margin-top: 40px; }
.layer-item {
  display: flex; align-items: center; gap: 20px;
  padding: 22px 26px;
}
.layer-index {
  flex: none;
  width: 48px; height: 48px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-tertiary), var(--color-secondary));
  color: #fff;
}
.layer-item h4 { margin: 0 0 4px; font-size: 1.05rem; }
.layer-item p { margin: 0; font-size: 0.92rem; }

/* ---------------------------------------------------------------------
   Comparison table
   --------------------------------------------------------------------- */
.compare-wrap { overflow-x: auto; border-radius: var(--radius-lg); }
table.compare {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
table.compare th, table.compare td {
  padding: 16px 20px;
  text-align: start;
  font-size: 0.95rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
table.compare thead th {
  background: rgba(0, 250, 183, 0.08);
  color: var(--color-primary);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}
table.compare tbody tr:last-child td { border-bottom: none; }
table.compare tbody tr:hover { background: rgba(255,255,255,0.03); }
table.compare td:first-child { color: var(--color-text); font-weight: 600; }
.check-yes { color: var(--color-primary); font-weight: 700; }
.check-no { color: var(--color-text-muted); }

/* ---------------------------------------------------------------------
   Pricing
   --------------------------------------------------------------------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.pricing-card {
  padding: 32px 24px;
  text-align: center;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.pricing-card h3 { margin: 0; font-size: 1.25rem; }
.pricing-price { font-size: 2.35rem; font-weight: 800; margin: 0; }
.pricing-members { margin: 0 0 8px; color: var(--color-text-muted); }
.pricing-card .btn { margin-top: auto; }
#checkout-message { margin-top: 18px; text-align: center; font-size: 0.9rem; min-height: 1.2em; }
#checkout-message.error { color: #ff6b81; }
#checkout-message.success { color: var(--color-primary); }

/* ---------------------------------------------------------------------
   FAQ
   --------------------------------------------------------------------- */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item { padding: 4px 8px; }
.faq-question {
  width: 100%;
  background: none; border: none;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 16px;
  color: var(--color-text);
  font-size: 1.02rem;
  font-weight: 600;
  text-align: start;
}
.faq-question .icon { transition: transform var(--transition-fast); color: var(--color-primary); flex: none; margin-inline-start: 12px; }
.faq-item.open .faq-question .icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-med), padding var(--transition-med);
  padding: 0 16px;
  font-size: 0.95rem;
}
.faq-item.open .faq-answer { max-height: 600px; padding: 0 16px 18px; }

/* ---------------------------------------------------------------------
   Footer
   --------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 56px 0 32px;
  background: var(--color-bg-deep);
}
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 32px; margin-bottom: 32px; }
.footer-brand { max-width: 320px; }
.footer-links { display: flex; gap: 48px; flex-wrap: wrap; }
.footer-col h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-primary); margin-bottom: 14px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: var(--color-text-muted); font-size: 0.92rem; }
.footer-bottom { text-align: center; font-size: 0.85rem; color: var(--color-text-muted); border-top: 1px solid rgba(255,255,255,0.06); padding-top: 24px; }

/* ---------------------------------------------------------------------
   Utility
   --------------------------------------------------------------------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.hidden { display: none !important; }
.skip-link {
  position: absolute; top: -50px; inset-inline-start: 8px;
  background: var(--color-primary); color: #001018; padding: 10px 16px;
  border-radius: var(--radius-sm); z-index: 2000; transition: top var(--transition-fast);
}
.skip-link:focus { top: 8px; }

::selection { background: var(--color-primary); color: #001018; }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--color-bg-deep); }
::-webkit-scrollbar-thumb { background: var(--color-tertiary); border-radius: 6px; }

/* ---------------------------------------------------------------------
   RTL support (Arabic)
   --------------------------------------------------------------------- */
[dir="rtl"] .nav-links,
[dir="rtl"] .cta-row,
[dir="rtl"] .footer-links,
[dir="rtl"] .nav-actions { direction: rtl; }
[dir="rtl"] .feature-icon,
[dir="rtl"] .layer-index { margin-inline-end: 0; }
[dir="rtl"] table.compare th,
[dir="rtl"] table.compare td { text-align: right; }
[dir="rtl"] .lang-menu button { text-align: right; }

/* ---------------------------------------------------------------------
   Responsive
   --------------------------------------------------------------------- */
@media (max-width: 1200px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .detail-grid { grid-template-columns: 1fr; }
  .detail-grid.reverse { direction: ltr; }
  .grid-3, .grid-2, .pricing-grid { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
  .footer-grid { flex-direction: column; }
  .cta-row { justify-content: center; }
  .hero { padding-top: 100px; }
}

@media (max-width: 480px) {
  .btn { width: 100%; }
  .cta-row { flex-direction: column; }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------------------------------------------------------------------
   Scroll-reveal animations
   --------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}