:root {
  --sv-primary: #4f46e5;
  --sv-accent: #06b6d4;
  --sv-dark: #020617;
  --sv-dark-soft: #0b1220;
  --sv-light: #f9fafb;
  --sv-muted: #9ca3af;
  --sv-radius-xl: 32px;
  --sv-radius-lg: 22px;
  --sv-radius-md: 16px;
  --sv-shadow-soft: 0 24px 60px rgba(15, 23, 42, 0.5);
  --sv-shadow-hero: 0 40px 120px rgba(15, 23, 42, 0.8);
  /*--sv-header-height-desktop: 64px;
  --sv-header-height-mobile: 56px;*/
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background: var(--sv-dark);
}

body {
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #e5e7eb;
  background:
    radial-gradient(circle at top left, #020617 0, #020617 50%, #000 100%);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

100vh
{
 height: 100vh;
}
/* Typography */

h1,
h2,
h3,
h4 {
  margin: 0 0 0.6rem;
  line-height: 1.1;
}

h1 {
  font-size: clamp(2.4rem, 4vw, 3.8rem);
}

h2 {
  font-size: clamp(2.0rem, 3vw, 2.8rem);
}

h3 {
  font-size: clamp(1.6rem, 2.4vw, 2.1rem);
}

p {
  margin: 0 0 0.75rem;
  font-size: 16px;
}

/* Layout */

.container {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding-left: clamp(1.4rem, 4vw, 4.2rem);
  padding-right: clamp(1.4rem, 4vw, 4.2rem);
}

.page {
  min-height: 100vh;
  padding-top: var(--sv-header-height-desktop);
}

.panel {
  min-height: calc(100vh - var(--sv-header-height-desktop));
  display: flex;
  align-items: center;
  padding: 3.2rem 0;
}

.panel-alt {
  background:
    radial-gradient(circle at top left, #020617 0, #020617 60%, #020617 100%);
}

.panel-dark {
  background:
    radial-gradient(circle at top left, #1f2937 0, #020617 55%, #000 100%);
}

/* Navbar */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: linear-gradient(
    to bottom,
    rgba(15, 23, 42, 0.96),
    rgba(15, 23, 42, 0.82)
  );
  border-bottom: 1px solid rgba(148, 163, 184, 0.6);
}

.nav-inner {
  max-width: 100%;
  margin: 0 auto;
  padding: 0.4rem clamp(1.4rem, 4vw, 4.2rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand img {
  height: 36px;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-text span:first-child {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 16px;
  font-weight: 600;
}

.brand-text span:last-child {
  font-size: 14px;
  color: var(--sv-muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  font-size: 16px;
}

.nav-links a {
  position: relative;
  padding-bottom: 0.15rem;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--sv-accent), var(--sv-primary));
  transition: width 0.2s ease;
}

.nav-links a:hover::after,
.nav-links a.is-active::after {
  width: 100%;
}

.nav-cta {
  padding: 0.4rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(15, 23, 42, 0.9);
  cursor: pointer;
}

.nav-cta-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #22c55e;
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.9);
}

.nav-toggle {
  display: none;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.8);
  background: rgba(15, 23, 42, 0.95);
  color: #e5e7eb;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* Mobile nav */

@media (max-width: 900px) {
  body {
    font-size: 16px;
  }

  .page {
    padding-top: var(--sv-header-height-mobile);
  }

  .panel {
    min-height: calc(100vh - var(--sv-header-height-mobile));
    padding: 2.4rem 0;
  }

  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: fixed;
    inset: 56px 0 auto 0;
    background: rgba(2, 6, 23, 0.98);
    backdrop-filter: blur(14px);
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem clamp(1.4rem, 4vw, 4.2rem) 1.4rem;
    border-bottom: 1px solid rgba(148, 163, 184, 0.6);
    display: none;
  }

  .site-header.is-menu-open .nav-links {
    display: flex;
  }

  .nav-links a {
    font-size: 15px;
  }
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.6rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  transition: transform 0.18s ease, box-shadow 0.18s ease,
    background 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--sv-accent), var(--sv-primary));
  color: #020617;
  box-shadow: var(--sv-shadow-hero);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 40px 120px rgba(15, 23, 42, 0.9);
}

.btn-outline {
  background: transparent;
  border: 1px solid rgba(148, 163, 184, 0.7);
  color: #e5e7eb;
}

.btn-outline:hover {
  background: rgba(15, 23, 42, 0.96);
}

/* Chips / label */

.kicker {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 13px;
  color: var(--sv-muted);
  margin-bottom: 0.3rem;
}

.chip-row,
.product-meta-row,
.power-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0.9rem 0 1.3rem;
}

.chip,
.product-meta,
.power-tag {
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  font-size: 13px;
  background: rgba(15, 23, 42, 0.9);
}

.power-tag {
  border-color: rgba(250, 249, 246, 0.9);
}

/* Cards */

.card-tilt {
  border-radius: var(--sv-radius-xl);
  background:
    radial-gradient(circle at top left, rgba(79, 70, 229, 0.35), transparent 60%),
    rgba(15, 23, 42, 0.96);
  box-shadow: var(--sv-shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.6);
  padding: 1.9rem 2.2rem;
  transform-style: preserve-3d;
}

.card-soft {
  border-radius: var(--sv-radius-xl);
  background:
    radial-gradient(circle at top left, rgba(79, 70, 229, 0.35), transparent 60%),
    rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(148, 163, 184, 0.65);
  box-shadow: var(--sv-shadow-soft);
  padding: 1.7rem 1.9rem;
}

/* Home layout */

.home-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
}

.home-card {
  cursor: pointer;
}

.home-image-wrap {
  border-radius: var(--sv-radius-lg);
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.7);
  margin-top: 1rem;
}

/* Shared hero/product layouts */

.hero-grid,
.product-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 2.4rem;
  align-items: center;
}

.product-layout.reverse .product-text {
  order: 2;
}

.product-layout.reverse .product-media {
  order: 1;
}

.product-text p {
  font-size: 18px;
}

.product-media,
.hero-media,
.power-image {
  border-radius: var(--sv-radius-xl);
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.7);
  box-shadow: var(--sv-shadow-hero);
}

/* Product list cards (for other uses if needed) */

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.8rem;
}

.product-card {
  border-radius: var(--sv-radius-lg);
  background:
    radial-gradient(circle at top left, rgba(79, 70, 229, 0.32), transparent 60%),
    rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(148, 163, 184, 0.65);
  box-shadow: var(--sv-shadow-soft);
  padding: 1.4rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.product-card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}

.product-name {
  font-weight: 600;
  font-size: 18px;
}

.product-tag {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: #a5b4fc;
}

.product-body {
  font-size: 16px;
}

.product-specs {
  font-size: 14px;
  color: var(--sv-muted);
}

.product-card-footer {
  margin-top: 0.3rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.product-pill {
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  font-size: 12px;
}

/* Power card */

.power-card {
  border-radius: var(--sv-radius-xl);
  padding: 2rem 2.1rem;
  background:
    radial-gradient(circle at top left, rgba(250, 204, 21, 0.4), transparent 60%),
    rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(250, 204, 21, 0.85);
  box-shadow: var(--sv-shadow-hero);
}

/* Lists */

.info-list {
  margin: 0.4rem 0 0;
  padding-left: 1.1rem;
  font-size: 16px;
}

.info-list li {
  margin-bottom: 0.35rem;
}

/* Contact */

.contact-form {
  display: grid;
  gap: 0.8rem;
  margin-top: 0.6rem;
}

.contact-form label {
  display: block;
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 0.15rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border-radius: var(--sv-radius-md);
  border: 1px solid #334155;
  background: #020617;
  color: #e5e7eb;
  font-size: 15px;
  font-family: inherit;
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

/* Comparison matrix */

.comparison-section {
  max-width: 100%;
  margin: 0 auto;
}

.comparison-wrap {
  margin-top: 1.8rem;
  border-radius: var(--sv-radius-xl);
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.6);
  box-shadow: var(--sv-shadow-soft);
  background: rgba(15, 23, 42, 0.96);
}

.comparison-scroll {
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 720px;
}

.comparison-table thead {
  background: linear-gradient(90deg, var(--sv-primary), var(--sv-accent));
  color: #020617;
}

.comparison-table th,
.comparison-table td {
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid rgba(30, 64, 175, 0.5);
  text-align: left;
  vertical-align: top;
}

.comparison-table tbody tr:nth-child(odd) td {
  background: rgba(15, 23, 42, 0.95);
}

.comparison-table tbody tr:nth-child(even) td {
  background: rgba(15, 23, 42, 0.85);
}

.comparison-table th:first-child,
.comparison-table td:first-child {
  font-weight: 600;
}

/* Footer */

.site-footer {
  padding: 0.9rem clamp(1.4rem, 4vw, 4.2rem) 1.4rem;
  text-align: center;
  font-size: 13px;
  color: var(--sv-muted);
  background: #020617;
  border-top: 1px solid #111827;
}

/* Reveal + parallax */

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
  will-change: opacity, transform;
}

.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 0.12s;
}

.reveal-delay-2 {
  transition-delay: 0.24s;
}

.parallax-y {
  will-change: transform;
}

/* Responsive / mobile panels */

@media (max-width: 960px) {
  .panel {
    padding: 2.2rem 0;
  }

  .home-grid,
  .hero-grid,
  .product-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.8rem;
  }

  .card-tilt,
  .card-soft,
  .power-card {
    padding: 1.6rem 1.7rem;
  }

  h1 {
    font-size: 2.1rem;
  }

  h2 {
    font-size: 1.7rem;
  }

  p,
  .product-body {
    font-size: 15px;
  }
}

@media (orientation: landscape) and (max-width: 960px) {
  .panel {
    min-height: calc(100vh - var(--sv-header-height-mobile));
    padding: 1.8rem 0;
  }

  .container {
    max-width: 100%;
  }
}