/* Intervals Website Styles */
:root {
  --bg-primary: #0d0d1a;
  --bg-secondary: #13132a;
  --accent: #4e6cff;
  --text-primary: #ffffff;
  --text-secondary: #c0c0d0;
  --radius: 12px;
  --transition-fast: 0.3s;
  --max-width: 1200px;
  --shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background:
    radial-gradient(circle at 10% 8%, rgba(90, 122, 255, 0.18), transparent 24%),
    radial-gradient(circle at 88% 10%, rgba(68, 205, 255, 0.12), transparent 18%),
    radial-gradient(circle at 50% 84%, rgba(64, 92, 194, 0.16), transparent 28%),
    linear-gradient(180deg, #070a13 0%, #0c1120 40%, #090d18 100%);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, transparent 0 95px, rgba(255, 255, 255, 0.018) 95px 96px),
    repeating-linear-gradient(0deg, transparent 0 95px, rgba(255, 255, 255, 0.018) 95px 96px);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.35), transparent 78%);
  opacity: 0.38;
  z-index: 0;
}

body > * {
  position: relative;
  z-index: 1;
}

.navbar {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 2rem;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
  position: fixed;
  width: 100%;
  z-index: 999;
}

.navbar.is-scrolled {
  background: rgba(9, 12, 29, 0.78);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

.navbar .logo { display: flex; align-items: center; gap: 0.6rem; }
.navbar .logo img {
  height: 40px;
  width: 40px;
  object-fit: contain;
}
.navbar .logo span {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
}

.nav-links { display: flex; list-style: none; gap: 2rem; }

.nav-links a {
  text-decoration: none;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}
.nav-links a:hover { color: var(--accent); }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}
.burger span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

.hero {
  height: 100vh;
  background:
    radial-gradient(circle at 50% 10%, rgba(94, 127, 255, 0.18), transparent 22%),
    linear-gradient(135deg, #0c1020 0%, #121936 48%, #0d1120 100%);
  display: flex;
  align-items: center;
  position: relative;
  text-align: center;
  padding: 7rem 1.5rem 4rem;
  isolation: isolate;
}
.hero-overlay {
  background:
    radial-gradient(circle at 50% 30%, rgba(87, 124, 255, 0.16), transparent 30%),
    radial-gradient(circle at 20% 82%, rgba(44, 77, 190, 0.14), transparent 28%),
    radial-gradient(circle at 78% 24%, rgba(95, 224, 255, 0.12), transparent 22%);
  opacity: 1;
  position: absolute; inset: 0;
}

.hero-overlay::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 10, 19, 0.76) 0%, rgba(7, 10, 19, 0.2) 22%, rgba(7, 10, 19, 0.2) 78%, rgba(7, 10, 19, 0.76) 100%),
    radial-gradient(circle at center, rgba(8, 11, 22, 0.02) 0%, rgba(8, 11, 22, 0.12) 44%, rgba(8, 11, 22, 0.58) 78%, rgba(8, 11, 22, 0.86) 100%);
}

.hero-overlay::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 34%;
  background: linear-gradient(180deg, rgba(9, 12, 24, 0) 0%, rgba(9, 12, 24, 0.7) 100%);
}

.hero-content {
  max-width: 840px;
  margin: 0 auto;
  z-index: 1;
  position: relative;
}
.hero-content::before {
  content: "";
  position: absolute;
  inset: -2rem -2.5rem;
  background: radial-gradient(circle at center, rgba(9, 12, 24, 0.08) 0%, rgba(9, 12, 24, 0.22) 34%, rgba(9, 12, 24, 0) 76%);
  filter: blur(16px);
  z-index: -1;
}
.hero h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 3rem;
  margin-bottom: 1rem;
  text-shadow: 0 14px 32px rgba(0, 0, 0, 0.32);
}
.hero p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin: 0 auto 1.2rem;
  max-width: 700px;
  text-shadow: 0 10px 24px rgba(0, 0, 0, 0.28);
}

.hero-visual {
  width: min(100%, 170px);
  margin: 1.45rem auto 1.15rem;
  position: relative;
  isolation: isolate;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: -14%;
  background: radial-gradient(circle, rgba(79, 116, 255, 0.26) 0%, rgba(79, 116, 255, 0.08) 46%, rgba(79, 116, 255, 0) 78%);
  filter: blur(28px);
}

.hero-visual img {
  width: 100%;
  height: auto;
  display: block;
  position: relative;
  z-index: 1;
  opacity: 0.94;
  border-radius: 28px;
  filter: drop-shadow(0 18px 40px rgba(0, 0, 0, 0.3));
}

.btn-primary {
  padding: 0.9rem 2rem;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  color: #fff; font-weight: 600; text-decoration: none;
  box-shadow: var(--shadow);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.45);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.section-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 2rem;
  margin-bottom: 2rem;
  text-align: center;
}

.features {
  position: relative;
}

.features::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 16%, rgba(79, 114, 255, 0.1), transparent 26%),
    radial-gradient(circle at 82% 88%, rgba(65, 208, 255, 0.07), transparent 24%);
  pointer-events: none;
}

.features .feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.8rem;
  position: relative;
  z-index: 1;
}
.feature-card {
  background: var(--bg-secondary);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  transform-style: preserve-3d;
  will-change: transform;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.48);
}
body.has-gsap .feature-card:hover { transform: none; }
.feature-card h3 { font-size: 1.25rem; margin-bottom: 0.6rem; }
.feature-card p { color: var(--text-secondary); }

.demo {
  background:
    radial-gradient(circle at 50% 22%, rgba(84, 121, 255, 0.14), transparent 26%),
    radial-gradient(circle at 8% 80%, rgba(74, 215, 255, 0.08), transparent 18%),
    linear-gradient(180deg, rgba(19, 19, 42, 0.94), rgba(13, 16, 29, 0.98));
  padding: 4rem 1.5rem;
  text-align: center;
  position: relative;
}
.video-frame {
  max-width: 800px;
  margin: 2rem auto 0;
  padding: 0;
  border-radius: 0;
  overflow: visible;
  box-shadow: none;
  border: 0;
  position: relative;
  background: transparent;
}
.video-frame img, video {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 0;
}

.download {
  padding: 4rem 1.5rem;
  text-align: center;
  overflow: hidden;
  position: relative;
  background:
    radial-gradient(circle at 18% 20%, rgba(64, 98, 236, 0.12), transparent 24%),
    radial-gradient(circle at 82% 72%, rgba(72, 215, 255, 0.08), transparent 22%);
}
.download-note, .small-text { font-size: 0.85rem; color: var(--text-secondary); }

.download .btn-primary {
  margin: 1.5rem 0;
  display: inline-block;
}

.download-layout {
  max-width: var(--max-width);
  margin: 2.5rem auto 0;
  display: grid;
  grid-template-columns: minmax(220px, 280px) 1fr;
  gap: 2.2rem;
  align-items: center;
}

.download-showcase {
  position: relative;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.download-showcase::before {
  content: "";
  position: absolute;
  width: 88%;
  height: 78%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(78, 108, 255, 0.42) 0%, rgba(78, 108, 255, 0.16) 38%, rgba(78, 108, 255, 0) 72%);
  filter: blur(42px);
}

.download-showcase::after {
  content: "";
  position: absolute;
  left: 16%;
  right: 16%;
  bottom: 9%;
  height: 58px;
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.68) 0%, rgba(0, 0, 0, 0.2) 46%, rgba(0, 0, 0, 0) 78%);
  filter: blur(14px);
}

.download-showcase img {
  position: relative;
  width: min(100%, 285px);
  height: auto;
  display: block;
  filter: drop-shadow(0 26px 50px rgba(0, 0, 0, 0.46));
  will-change: transform;
}

.download-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  justify-content: flex-start;
  margin-top: 0;
}

.download-card {
  background: var(--bg-secondary);
  padding: 2rem 1.5rem;
  width: 210px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.download-card h3 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.download-card .btn-primary,
.download-card .btn-secondary {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 1rem;
}

.install-details {
  text-align: left;
  margin-top: 1.2rem;
  font-size: 0.75rem;
  padding: 0 0.4rem;
}
.install-details ol {
  font-size: 0.75rem;
  line-height: 1.4;
  padding-left: 1.4rem;
}
.install-details ol li {
  margin: 0.5rem 0;
}
.install-details ol li:last-child {
  margin-bottom: 0;
}

.btn-icon {
  width: 28px;
  height: 28px;
  margin: 0;
}

.btn-secondary {
  padding: 0.9rem 1rem;
  background: #444;
  border: none;
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-weight: 600;
  cursor: not-allowed;
  opacity: 0.6;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), opacity var(--transition-fast);
}

.btn-secondary:disabled {
  cursor: not-allowed;
}

.btn-secondary.is-ready {
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  opacity: 1;
  box-shadow: var(--shadow);
}

.btn-secondary.is-ready:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.45);
}

.btn-secondary.is-ready:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.72);
  outline-offset: 2px;
}

.faq details {
  background: var(--bg-secondary);
  margin-bottom: 1rem; padding: 1.2rem 1.5rem;
  border-radius: var(--radius); box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.05);
}
.faq summary { list-style: none; font-weight: 600; cursor: pointer; }
.faq p { margin-top: 1rem; color: var(--text-secondary); }

.footer {
  background:
    radial-gradient(circle at 50% 0%, rgba(78, 108, 255, 0.08), transparent 28%),
    linear-gradient(180deg, #090910 0%, #07080f 100%);
  padding-top: 3rem;
}
.footer-content {
  display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: 1rem;
}
.footer .logo-sm {
  display: flex; align-items: center; gap: 0.6rem;
  font-family: 'Orbitron', sans-serif; font-weight: 700;
}
.footer .logo-sm img {
  height: 48px;
  width: auto;
}
.social-links { display: flex; gap: 1rem; list-style: none; }
.social-links img { width: 24px; transition: transform var(--transition-fast); }
.social-links img:hover { transform: scale(1.2); }
.footer-bottom {
  border-top: 1px solid #1a1a2e;
  margin-top: 2rem; padding: 1rem 0;
  font-size: 0.8rem; color: var(--text-secondary);
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed; right: -100%; top: 0; height: 100vh; width: 200px;
    background: var(--bg-secondary);
    flex-direction: column; align-items: center; justify-content: center;
    gap: 2rem; transition: right var(--transition-fast);
  }
  .nav-links.nav-active { right: 0; }
  .burger { display: flex; }
  .burger.toggle span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .burger.toggle span:nth-child(2) { opacity: 0; }
  .burger.toggle span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
  .hero h1 { font-size: 2.2rem; }
  .hero {
    min-height: 100vh;
    height: auto;
    padding: 7rem 1.5rem 4rem;
  }
  .hero-overlay {
    background:
      radial-gradient(circle at 50% 34%, rgba(87, 124, 255, 0.18), transparent 34%),
      radial-gradient(circle at 20% 82%, rgba(44, 77, 190, 0.14), transparent 28%),
      radial-gradient(circle at 78% 24%, rgba(95, 224, 255, 0.12), transparent 22%);
  }
  .hero-overlay::before {
    inset: 0;
    background:
      linear-gradient(90deg, rgba(7, 10, 19, 0.78) 0%, rgba(7, 10, 19, 0.26) 18%, rgba(7, 10, 19, 0.26) 82%, rgba(7, 10, 19, 0.78) 100%),
      radial-gradient(circle at center, rgba(8, 11, 22, 0.04) 0%, rgba(8, 11, 22, 0.18) 42%, rgba(8, 11, 22, 0.66) 80%, rgba(8, 11, 22, 0.88) 100%);
  }
  .hero h1 {
    font-size: 2.3rem;
  }
  .hero-content::before {
    inset: -1.8rem -1.5rem;
  }
  .hero-visual {
    width: min(100%, 140px);
    margin: 1.15rem auto 0.95rem;
  }
  .video-frame {
    border-radius: 0;
  }
}

@media (max-width: 980px) {
  .download-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .download-showcase {
    min-height: 300px;
  }

  .download-grid {
    justify-content: center;
  }
}

header.navbar nav.lang-switcher {
  display: flex;
  gap: 0;
  align-items: center;
  margin-left: 0;
}

header.navbar > nav:not(.lang-switcher) {
  margin-left: auto;
}

header.navbar nav.lang-switcher a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 20px;
  padding: 0;
  line-height: 1;
  overflow: hidden;
  flex: 0 0 auto;
}
header.navbar nav.lang-switcher a > img.lang-icon {
  display: block;
  width: 100% !important;
  height: 100% !important;
  object-fit: contain;
}

header.navbar nav.lang-switcher a:first-child::after {
  content: "/";
  display: inline-block;
  height: 20px;
  line-height: 20px;
  font-size: 14px;
  margin-left: 0.12rem;
  margin-right: 0.02rem;
  color: var(--text-secondary);
  opacity: 0.85;
}