/* ============================================================
   Gorizont — Global Stylesheet (mobile-first)
   ============================================================ */

/* --- Custom Properties (Design Tokens) --- */
:root {
  --bg-dark: #1e2227;
  --bg-darker: #161a1f;
  --card: #313740;
  --card-hover: #3a434e;
  --primary: #0071e3;
  --accent: #005fc0;
  --text: #e4e8ef;
  --text-muted: #9ca3af;
  --success: #22c55e;
  --warning: #f59e0b;
  --error: #ef4444;
  --border: #3a3f4a;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,.35);
  --shadow-sm: 0 2px 8px rgba(0,0,0,.25);
  --transition: 0.25s cubic-bezier(.4,0,.2,1);
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Poppins', 'Inter', system-ui, sans-serif;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg-darker);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  padding-top: var(--safe-top);
  padding-bottom: var(--safe-bottom);
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
}

/* --- Utilities --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary); }
.text-center { text-align: center; }

/* --- Skip Link --- */
.skip-link {
  position: absolute; top: -100px; left: 16px;
  background: var(--primary); color: #fff;
  padding: 8px 16px; border-radius: var(--radius-sm);
  z-index: 10000; font-weight: 600;
  transition: top var(--transition);
}
.skip-link:focus { top: 8px; }

/* ============================================================
   HEADER / NAV (Mobile-first)
   ============================================================ */
.site-header {
  position: fixed; top: 0; left: 0; right: 0;
  background: rgba(22, 26, 31, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  padding: 0 16px;
  height: 60px;
  display: flex; align-items: center; justify-content: space-between;
}

.header-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-heading);
  font-weight: 700; font-size: 1.25rem;
  color: var(--text);
}
.header-logo img { width: 32px; height: 32px; }

.nav-desktop { display: none; }
.nav-desktop a {
  color: var(--text-muted); font-size: .9rem; font-weight: 500;
  padding: 8px 12px; border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  min-height: 44px; display: inline-flex; align-items: center;
}
.nav-desktop a:hover, .nav-desktop a[aria-current="page"] {
  color: var(--text); background: var(--card);
}

/* Hamburger */
.hamburger {
  display: flex; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: 10px; min-width: 44px; min-height: 44px;
  align-items: center; justify-content: center;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text); border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none; position: fixed;
  top: 60px; left: 0; right: 0; bottom: 0;
  background: var(--bg-darker);
  padding: 16px; overflow-y: auto;
  z-index: 999;
}
.mobile-menu.open { display: flex; flex-direction: column; gap: 4px; }
.mobile-menu a {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 16px; border-radius: var(--radius-sm);
  color: var(--text); font-size: 1rem; font-weight: 500;
  min-height: 48px;
  transition: background var(--transition);
}
.mobile-menu a:hover, .mobile-menu a[aria-current="page"] { background: var(--card); }

/* Language Switcher */
.lang-switch {
  display: flex; gap: 4px; align-items: center;
}
.lang-switch a, .lang-switch button {
  min-width: 44px; min-height: 44px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  font-size: .8rem; font-weight: 600;
  color: var(--text-muted); background: transparent;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}
.lang-switch a:hover, .lang-switch button:hover,
.lang-switch a[aria-current="true"], .lang-switch button[aria-current="true"] {
  background: var(--primary); color: #fff; border-color: var(--primary);
}

/* Bottom CTA bar (mobile) */
.bottom-bar {
  position: fixed; bottom: 0; left: 0; right: 0;
  background: rgba(22, 26, 31, .95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding: 10px 16px calc(10px + var(--safe-bottom));
  display: flex; align-items: center; gap: 10px;
  z-index: 1000;
}
.bottom-bar .btn-primary { flex: 1; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-body);
  font-weight: 600; font-size: .95rem;
  border: none; border-radius: var(--radius);
  cursor: pointer;
  min-height: 48px; padding: 12px 24px;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--primary); color: #fff;
}
.btn-primary:hover { background: var(--accent); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-secondary {
  background: var(--card); color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--card-hover); transform: translateY(-1px); }
.btn-outline {
  background: transparent; color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-sm { min-height: 40px; padding: 8px 16px; font-size: .85rem; }
.btn-lg { min-height: 56px; padding: 16px 32px; font-size: 1.1rem; }
.btn-icon { padding: 12px; min-width: 48px; }

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  padding: 80px 0 36px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(0,113,227,.08) 0%, transparent 60%);
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(0,113,227,.18) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(79,195,247,.08) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 80%, rgba(139,92,246,.08) 0%, transparent 50%);
  pointer-events: none;
}

/* Animated glow orb in hero */
.hero-glow {
  position: absolute;
  width: 500px; height: 500px;
  top: -100px; left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(0,113,227,.2) 0%, transparent 70%);
  border-radius: 50%;
  animation: hero-glow-pulse 4s ease-in-out infinite;
  pointer-events: none;
}
@keyframes hero-glow-pulse {
  0%, 100% { opacity: .6; transform: translateX(-50%) scale(1); }
  50% { opacity: 1; transform: translateX(-50%) scale(1.15); }
}

/* Particle container */
.hero-particles {
  position: absolute; inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.hero-particles .particle {
  position: absolute;
  width: 4px; height: 4px;
  background: var(--primary);
  border-radius: 50%;
  opacity: 0;
  animation: particle-float linear infinite;
}
@keyframes particle-float {
  0% { opacity: 0; transform: translateY(0) scale(0); }
  10% { opacity: .7; transform: scale(1); }
  90% { opacity: .3; }
  100% { opacity: 0; transform: translateY(-400px) scale(0); }
}

.hero h1 {
  font-size: clamp(1.75rem, 5vw, 3.25rem);
  margin-bottom: 16px;
  letter-spacing: -.02em;
  position: relative;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary), #4fc3f7, #8b5cf6, var(--primary));
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 6s ease infinite;
}
@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.hero .subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 32px;
  position: relative;
}
.hero-cta {
  display: flex; flex-direction: column; gap: 12px;
  align-items: center;
  position: relative;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(0,113,227,.12);
  color: var(--primary);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: .8rem; font-weight: 600;
  margin-bottom: 16px;
  animation: badge-bounce 2s ease-in-out infinite;
  position: relative;
}
@keyframes badge-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

/* Pulse effect on primary CTA */
.pulse-btn {
  position: relative;
}
.pulse-btn::after {
  content: '';
  position: absolute; inset: -4px;
  border-radius: inherit;
  background: var(--primary);
  opacity: 0;
  z-index: -1;
  animation: pulse-ring 2.5s ease-out infinite;
}
@keyframes pulse-ring {
  0% { opacity: .4; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.15); }
}

/* Floating illustration cards in hero */
.hero-illustration {
  position: relative;
  margin-top: 28px;
  height: 72px;
  display: flex;
  justify-content: center;
  gap: 20px;
}
.float-card {
  display: inline-flex;
  align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--card), rgba(0,113,227,.08));
  border: 1px solid rgba(0,113,227,.15);
  border-radius: var(--radius);
  padding: 12px 20px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
  box-shadow: var(--shadow), 0 0 20px rgba(0,113,227,.06);
  animation: float 3s ease-in-out infinite;
}
.float-card-1 { animation-delay: 0s; border-color: rgba(0,113,227,.2); }
.float-card-2 { animation-delay: .5s; background: linear-gradient(135deg, var(--card), rgba(139,92,246,.08)); border-color: rgba(139,92,246,.2); }
.float-card-3 { animation-delay: 1s; background: linear-gradient(135deg, var(--card), rgba(20,184,166,.08)); border-color: rgba(20,184,166,.2); }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* Section divider wave */
.section-divider {
  position: relative;
  height: 60px;
  overflow: hidden;
}
.section-divider svg {
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 60px;
}

/* ============================================================
   PRODUCT CARDS
   ============================================================ */
.products-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: 40px 0;
}
.product-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), #4fc3f7, #8b5cf6);
  opacity: 0;
  transition: opacity var(--transition);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 40px rgba(0,113,227,.2);
  border-color: rgba(0,113,227,.3);
}
.product-card:hover::before {
  opacity: 1;
}
.product-card .icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, rgba(0,113,227,.15), rgba(79,195,247,.08));
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  font-size: 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.product-card:hover .icon {
  transform: scale(1.1);
  box-shadow: 0 4px 20px rgba(0,113,227,.2);
}
.product-card h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}
.product-card p {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: .95rem;
}

/* ============================================================
   FEATURES LIST
   ============================================================ */
.features {
  padding: 60px 0;
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.feature-item {
  display: flex; gap: 16px;
  align-items: flex-start;
  padding: 16px;
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition);
}
.feature-item:hover {
  background: rgba(0,113,227,.06);
  transform: translateX(4px);
}
.feature-icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  background: rgba(0,113,227,.1);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.feature-item:hover .feature-icon {
  transform: scale(1.1) rotate(-3deg);
  box-shadow: 0 4px 16px rgba(0,113,227,.2);
}
.feature-item h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}
.feature-item p {
  color: var(--text-muted);
  font-size: .9rem;
}

/* ============================================================
   DOWNLOADS TABLE
   ============================================================ */
.downloads-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}
.downloads-table th, .downloads-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: .9rem;
}
.downloads-table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.downloads-table tbody tr {
  transition: background var(--transition);
}
.downloads-table tbody tr:hover {
  background: var(--card);
}
.sha-code {
  font-family: 'Fira Code', monospace;
  font-size: .75rem;
  color: var(--text-muted);
  word-break: break-all;
  background: var(--bg-dark);
  padding: 4px 8px;
  border-radius: 4px;
}

/* ============================================================
   FAQ / ACCORDION
   ============================================================ */
.faq-section { padding: 60px 0; }
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; background: none; border: none;
  padding: 20px 0; cursor: pointer;
  font-family: var(--font-body);
  font-size: 1rem; font-weight: 600;
  color: var(--text); text-align: left;
  min-height: 48px;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-question .icon-chevron {
  transition: transform var(--transition);
  flex-shrink: 0; margin-left: 12px;
}
.faq-item.open .faq-question .icon-chevron { transform: rotate(180deg); }
.faq-answer {
  max-height: 0; overflow: hidden;
  transition: max-height .3s ease, padding .3s ease;
}
.faq-item.open .faq-answer {
  max-height: 600px;
  padding-bottom: 20px;
}
.faq-answer p {
  color: var(--text-muted);
  font-size: .95rem;
  line-height: 1.7;
}

/* ============================================================
   SECTION HEADINGS
   ============================================================ */
.section-heading {
  text-align: center;
  margin-bottom: 40px;
}
.section-heading h2 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin-bottom: 12px;
}
.section-heading p {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(22,26,31,.98) 100%);
  border-top: 1px solid var(--border);
  padding: 48px 16px 120px; /* extra bottom for mobile bottom-bar */
  position: relative;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
}
.footer-col h4 {
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: var(--text-muted);
  padding: 6px 0;
  font-size: .9rem;
  min-height: 44px;
  display: flex; align-items: center;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-muted);
  font-size: .8rem;
}

/* ============================================================
   PAGE CONTENT
   ============================================================ */
.page-content {
  padding: 80px 0 60px;
  min-height: 60vh;
}
.page-content h1 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  margin-bottom: 24px;
}
.prose {
  max-width: 720px;
  line-height: 1.8;
}
.prose p { margin-bottom: 16px; }
.prose ul, .prose ol { margin-bottom: 16px; padding-left: 24px; }
.prose li { margin-bottom: 8px; }
.prose h2 { margin: 40px 0 16px; font-size: 1.5rem; }
.prose h3 { margin: 32px 0 12px; font-size: 1.2rem; }
.prose code {
  background: var(--card);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: .9em;
}

/* ============================================================
   TABLET (≥768px)
   ============================================================ */
@media (min-width: 768px) {
  .container { padding: 0 24px; }
  .hero { padding: 96px 0 48px; }
  .hero-cta { flex-direction: row; justify-content: center; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .bottom-bar { display: none; }
  .site-footer { padding-bottom: 48px; }
}

/* ============================================================
   DESKTOP (≥1024px)
   ============================================================ */
@media (min-width: 1024px) {
  .container { padding: 0 32px; }
  .nav-desktop { display: flex; align-items: center; gap: 4px; }
  .hamburger { display: none; }
  .mobile-menu { display: none !important; }
  .hero { padding: 110px 0 56px; }
  .features-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ============================================================
   AD BANNER
   ============================================================ */
.ad-section {
  padding: 40px 0;
}
.ad-banner-link {
  display: inline-block;
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  max-width: 728px;
}
.ad-banner-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,.3);
}
.ad-banner-img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
}

/* ============================================================
   BODY BACKGROUND MESH
   ============================================================ */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 10% 20%, rgba(0,113,227,.07) 0%, transparent 50%),
    radial-gradient(ellipse at 90% 80%, rgba(139,92,246,.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(79,195,247,.05) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 10%, rgba(20,184,166,.04) 0%, transparent 45%),
    radial-gradient(ellipse at 20% 90%, rgba(236,72,153,.04) 0%, transparent 45%);
  pointer-events: none;
  z-index: -1;
}

/* Section accent lines */
.features {
  position: relative;
}
.features::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 120px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: .3;
}

/* Animated counter numbers (used by JS) */
.count-up {
  font-variant-numeric: tabular-nums;
}

/* Tilt on cards (subtle 3D) */
.product-card, .feature-item {
  transform-style: preserve-3d;
  perspective: 1000px;
}

/* Smooth scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 20px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column;
  align-items: center; gap: 4px;
  color: var(--text-muted);
  font-size: .75rem;
  animation: scroll-bounce 2s ease-in-out infinite;
}
.scroll-indicator::after {
  content: '';
  width: 20px; height: 30px;
  border: 2px solid var(--text-muted);
  border-radius: 10px;
  position: relative;
}
.scroll-indicator::before {
  content: '';
  width: 3px; height: 6px;
  background: var(--primary);
  border-radius: 3px;
  position: absolute;
  bottom: 30px;
  animation: scroll-dot 2s ease-in-out infinite;
}
@keyframes scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}
@keyframes scroll-dot {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(10px); opacity: .3; }
}

/* ============================================================
   ACCESSIBILITY: Reduced Motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================================
   PRINT
   ============================================================ */
@media print {
  .site-header, .bottom-bar, .site-footer, .hamburger { display: none; }
  body { background: #fff; color: #000; }
  a { color: #000; }
}