:root {
  --font-base: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading: "Space Grotesk", var(--font-base);
  --color-bg: #f7f7fb;
  --color-surface: #ffffff;
  --color-surface-subtle: #f0f1f6;
  --color-text: #111322;
  --color-text-muted: #5f6373;
  --color-border: #dfe2ea;
  --color-accent: #1f6feb;
  --color-accent-soft: rgba(31, 111, 235, 0.08);
  --color-success: #14b57a;
  --shadow-soft: 0 18px 40px rgba(17, 19, 34, 0.08);
  --shadow-hard: 0 10px 30px rgba(17, 19, 34, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  --space-2xs: 0.35rem;
  --space-xs: 0.55rem;
  --space-sm: 0.9rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 5.5rem;
  --max-width: 1100px;
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}

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

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

p {
  margin: 0;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  margin: 0;
  color: var(--color-text);
}

.kodeMono {
  font-family: var(--font-heading);
}

#logo {
  position: fixed;
  top: 24px;
  left: 32px;
  z-index: 20;
  width: 120px;
}

#logo a img {
  width: 100%;
}

#hamburger {
  position: fixed;
  top: 24px;
  right: 32px;
  width: 48px;
  height: 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  z-index: 21;
  transition: transform 0.24s ease;
}

#hamburger:hover {
  transform: translateY(-2px);
}

.bar {
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-xs);
  position: relative;
}

.bar + .bar {
  margin-top: 0;
}

nav {
  position: fixed;
  top: 0;
  right: -320px;
  height: 100dvh;
  width: 280px;
  padding: var(--space-xl) var(--space-md);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-left: 1px solid var(--color-border);
  box-shadow: -10px 0 40px rgba(17, 19, 34, 0.08);
  z-index: 18;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  text-align: right;
}

nav a {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  padding: var(--space-2xs) 0;
  transition: color 0.2s ease;
}

nav a:hover {
  color: var(--color-accent);
}

#social {
  margin-top: auto;
  display: flex;
  justify-content: flex-end;
  gap: var(--space-xs);
}

#social a {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

#social img {
  width: 16px;
  height: 16px;
}

.page-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg) var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

header.hero {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-lg);
  align-items: center;
  box-shadow: var(--shadow-soft);
}

.hero-copy {
  grid-column: span 6;
  display: grid;
  gap: var(--space-sm);
}

.hero-eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  line-height: 1.1;
}

.hero-summary {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 32rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.hero-media {
  grid-column: span 6;
  background: var(--color-surface-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
}

.hero-media img {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.section {
  display: grid;
  gap: var(--space-md);
}

.section-header {
  display: grid;
  gap: var(--space-xs);
  max-width: 36rem;
}

.section-eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
}

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

.section--split {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-soft);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-lg);
  align-items: center;
}

.section--split .section-copy {
  grid-column: span 7;
  display: grid;
  gap: var(--space-sm);
}

.section--split figure {
  grid-column: span 5;
}

.section--highlight {
  background: var(--color-accent-soft);
  border: 1px solid rgba(31, 111, 235, 0.16);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-sm);
}

.tech-card {
  grid-column: span 6;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: var(--space-xs);
}

.tech-card h2 {
  font-size: 1.1rem;
}

.tech-card p {
  color: var(--color-text-muted);
  font-size: 0.98rem;
}

.faq-list {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-sm);
}

.faq-item {
  grid-column: span 6;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  display: grid;
  gap: var(--space-xs);
  box-shadow: var(--shadow-soft);
}

.faq-item h2 {
  font-size: 1.05rem;
}

.faq-item p {
  color: var(--color-text-muted);
}

.models-preview {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: var(--space-md);
}

.models-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-sm);
}

.model-card {
  grid-column: span 4;
  background: var(--color-surface-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  display: grid;
  gap: var(--space-xs);
  box-shadow: var(--shadow-soft);
}

.model-card img {
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-xs);
}

.model-series {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.model-specs {
  list-style: none;
  padding-left: 1.2rem;
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.model-specs li {
  margin-bottom: var(--space-2xs);
}

.site-footer {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  display: grid;
  gap: var(--space-sm);
  border: 1px solid var(--color-border);
  text-align: center;
}

.site-footer p {
  color: var(--color-text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hard);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Accessories */
#accessoriesIntro {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-soft);
  text-align: center;
  display: grid;
  gap: var(--space-xs);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-sm);
}

.product-card {
  grid-column: span 4;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: var(--space-xs);
  text-align: left;
}

.product-card img {
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-xs);
}

.product-title {
  font-size: 1.05rem;
}

.product-price {
  color: var(--color-text-muted);
  font-weight: 500;
}

.product-card .btn {
  justify-self: flex-start;
  padding: 0.6rem 1.3rem;
  font-size: 0.85rem;
}

.product-card .btn:hover {
  transform: translateY(-1px);
}

/* Models page */
#models {
  display: grid;
  gap: var(--space-lg);
}

.models-inner {
  display: grid;
  gap: var(--space-lg);
}

.models-title {
  font-size: clamp(2rem, 5vw, 2.8rem);
}

.models-group {
  display: grid;
  gap: var(--space-sm);
}

.models-heading {
  font-size: 1.4rem;
  color: var(--color-accent);
}

.models-collection {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-sm);
}

.models-collection .model-card {
  grid-column: span 4;
  background: var(--color-surface);
}

.models-separator {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-md) 0;
}

/* Contact */
.page-contact .page-wrap {
  padding-top: var(--space-xl);
}

#contact {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-soft);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-lg);
}

.contact-left {
  grid-column: span 5;
  display: grid;
  gap: var(--space-md);
}

.contact-intro {
  color: var(--color-text-muted);
}

.contact-details {
  display: grid;
  gap: var(--space-sm);
}

.contact-block h3 {
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.contact-block p {
  margin: 0;
  color: var(--color-text);
}

.contact-block a {
  color: var(--color-accent);
  text-decoration: none;
}

.contact-social p {
  color: var(--color-text-muted);
}

.contact-social-links {
  display: flex;
  gap: var(--space-xs);
}

.contact-social-links a {
  width: 36px;
  height: 36px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface-subtle);
}

.contact-right {
  grid-column: span 7;
  background: var(--color-surface-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  display: grid;
  gap: var(--space-md);
}

.contact-form {
  display: grid;
  gap: var(--space-sm);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-sm);
}

.form-field {
  grid-column: span 6;
  display: grid;
  gap: var(--space-xs);
  font-size: 0.95rem;
}

.form-field.full {
  grid-column: span 12;
}

.form-field label {
  font-weight: 500;
  color: var(--color-text);
}

.form-field input,
.form-field select,
.form-field textarea {
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  padding: 0.9rem 1rem;
  background: #fff;
  color: var(--color-text);
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  outline: none;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.btn-submit {
  justify-self: flex-start;
  background: var(--color-accent);
  color: #fff;
  padding: 0.75rem 1.9rem;
  border-radius: 999px;
  border: none;
  font-weight: 600;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hard);
}

.contact-form-caption {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Utilities */
.muted {
  color: var(--color-text-muted);
}

@media (max-width: 1200px) {
  .page-wrap {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }
}

@media (max-width: 1024px) {
  header.hero,
  .section--split,
  #contact {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }

  .hero-copy,
  .hero-media,
  .section--split .section-copy,
  .section--split figure,
  .contact-left,
  .contact-right {
    grid-column: auto;
  }

  .hero-media,
  .section--split figure {
    order: -1;
  }

  .tech-grid,
  .faq-list,
  .models-grid,
  .catalog-grid,
  .models-collection,
  .form-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tech-card,
  .faq-item,
  .model-card,
  .product-card,
  .models-collection .model-card {
    grid-column: span 1;
  }

  #hamburger {
    right: 24px;
  }

  #logo {
    left: 24px;
  }
}

@media (max-width: 720px) {
  nav {
    width: 240px;
    right: -260px;
  }

  .page-wrap {
    padding-top: var(--space-xl);
    gap: var(--space-lg);
  }

  header.hero {
    padding: var(--space-lg);
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .tech-grid,
  .faq-list,
  .models-grid,
  .catalog-grid,
  .models-collection,
  .form-row {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }

  #logo {
    width: 60px;
    top: 18px;
    left: 18px;
  }

  #hamburger {
    top: 18px;
    right: 18px;
  }
}

@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;
  }
}