/* ============================================
   Custom Properties
   ============================================ */
:root {
  --bg: #09090b;
  --bg-alt: #0f0f12;
  --surface: #18181b;
  --surface-hover: #1f1f23;
  --text: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent: #60a5fa;
  --accent-hover: #3b82f6;
  --border: #27272a;
  --border-subtle: #1f1f23;

  --font-display: 'Syne', system-ui, sans-serif;
  --font-body: 'Manrope', system-ui, sans-serif;
  --max-width: 1080px;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

button, input, textarea {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
}

/* ============================================
   Layout
   ============================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: 120px 0;
}

.section-alt {
  background-color: var(--bg-alt);
}

.section-label {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-heading {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 600;
  margin-bottom: 56px;
  line-height: 1.1;
}

.accent {
  color: var(--accent);
}

/* ============================================
   Navigation
   ============================================ */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background-color 0.4s ease, backdrop-filter 0.4s ease;
}

#nav.scrolled {
  background-color: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  gap: 40px;
}

.nav-links a {
  font-weight: 400;
  font-size: 0.85rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.2s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--accent);
  transition: width 0.3s ease;
}

.nav-links a:hover {
  color: var(--text);
}

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

/* Hamburger */
.nav-toggle {
  display: none;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 22px;
  height: 1.5px;
  background-color: var(--text);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger {
  position: relative;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

.nav-toggle[aria-expanded="true"] .hamburger {
  background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
  top: 0;
  transform: rotate(-45deg);
}

/* ============================================
   Hero
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding: 64px 32px;
}

.hero-label {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 4px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.5px;
}

.hero-divider {
  width: 40px;
  height: 1px;
  background-color: var(--accent);
  margin: 32px auto;
  opacity: 0.7;
}

.hero-tagline {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  color: var(--text-muted);
  opacity: 0.4;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ============================================
   Services — Editorial Rows
   ============================================ */
.services-list {
  max-width: 900px;
}

.service-row {
  display: grid;
  grid-template-columns: 48px 180px 1fr;
  gap: 24px;
  align-items: baseline;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  transition: opacity 0.2s ease;
}

.service-row:first-child {
  border-top: 1px solid var(--border);
}

.service-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--border);
  line-height: 1;
}

.service-title {
  font-size: 1.05rem;
  font-weight: 500;
}

.service-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  font-weight: 300;
  line-height: 1.6;
}

/* ============================================
   Gear — Side Panel
   ============================================ */
.gear-panel {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2px;
  background: var(--border-subtle);
  border-radius: 12px;
  overflow: hidden;
}

.gear-scroll-hint {
  display: none;
}

.gear-tabs-wrapper {
  background: var(--surface);
}

.gear-tabs {
  display: flex;
  flex-direction: column;
}

.gear-tab {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 20px 24px;
  cursor: pointer;
  border: none;
  background: transparent;
  text-align: left;
  transition: background-color 0.2s ease;
  border-left: 2px solid transparent;
}

.gear-tab:hover {
  background-color: var(--surface-hover);
}

.gear-tab.active {
  background-color: var(--bg-alt);
  border-left-color: var(--accent);
}

.gear-tab-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  display: block;
}

.gear-tab-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 300;
  margin-top: 2px;
  display: block;
}

.gear-tab.active .gear-tab-title {
  color: var(--accent);
}

.gear-content {
  background: var(--bg-alt);
  position: relative;
}

.gear-pane {
  display: none;
  padding: 32px;
  animation: fadeIn 0.3s ease;
}

.gear-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.gear-pane-header {
  margin-bottom: 24px;
}

.gear-image-placeholder {
  width: 100%;
  aspect-ratio: 21 / 9;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 1px;
}

.gear-pane-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.gear-pane-subtitle {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 300;
  margin-bottom: 24px;
}

.gear-spec-list {
  list-style: none;
}

.gear-spec-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.88rem;
}

.gear-spec-list li:last-child {
  border-bottom: none;
}

.spec-model {
  font-weight: 500;
}

.spec-type {
  color: var(--text-muted);
  font-weight: 300;
  font-size: 0.82rem;
}

/* ============================================
   Contact Form
   ============================================ */
.contact-form {
  max-width: 100%;
  margin: 0 auto;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.required {
  color: var(--accent);
}

.optional {
  color: var(--text-muted);
  font-weight: 300;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.75rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
  font-weight: 300;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.cf-turnstile {
  margin-bottom: 24px;
}

.submit-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background-color: var(--text);
  color: var(--bg);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
  border: none;
  min-height: 48px;
  letter-spacing: 0.3px;
}

.submit-btn:hover {
  background-color: var(--accent);
  color: var(--bg);
}

.submit-btn:active {
  transform: scale(0.98);
}

.submit-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.submit-btn svg {
  transition: transform 0.2s ease;
}

.submit-btn:hover svg {
  transform: translateX(3px);
}

.form-status {
  margin-top: 20px;
  font-size: 0.92rem;
  font-weight: 400;
  line-height: 1.5;
}

.form-status.success {
  color: #4ade80;
}

.form-status.error {
  color: #f87171;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 48px;
}

.footer-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.footer-title {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 300;
}

.footer-link {
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 300;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--accent);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 300;
}

/* ============================================
   Responsive — Mobile (≤ 768px)
   ============================================ */
@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }

  .section {
    padding: 80px 0;
  }

  .section-heading {
    font-size: 2rem;
    margin-bottom: 40px;
  }

  /* Nav mobile */
  .nav-toggle {
    display: block;
    z-index: 1001;
  }

  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }

  .nav-links.open {
    opacity: 1;
    visibility: visible;
  }

  .nav-links a {
    font-size: 1.2rem;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .nav-links a::after {
    display: none;
  }

  /* Hero mobile */
  .hero {
    padding: 64px 20px;
  }

  .hero-name {
    font-size: clamp(2.5rem, 10vw, 4rem);
  }

  /* Services mobile */
  .service-row {
    grid-template-columns: 40px 1fr;
    gap: 8px 16px;
  }

  .service-title {
    grid-column: 2;
  }

  .service-desc {
    grid-column: 1 / -1;
    padding-left: 56px;
  }

  /* Gear mobile — stack tabs above content */
  .gear-panel {
    grid-template-columns: 1fr;
  }

  .gear-tabs-wrapper {
    position: relative;
    overflow: hidden;
  }

  .gear-tabs {
    flex-direction: row;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .gear-tabs::-webkit-scrollbar {
    display: none;
  }

  .gear-scroll-hint {
    display: flex;
    position: absolute;
    top: 0;
    bottom: 0;
    width: 32px;
    align-items: center;
    justify-content: center;
    z-index: 2;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .gear-scroll-hint svg {
    color: var(--text-muted);
  }

  .gear-scroll-hint.hidden {
    opacity: 0;
  }

  .gear-scroll-hint-right {
    right: 0;
    background: linear-gradient(to right, transparent, var(--surface) 50%);
  }

  .gear-scroll-hint-right svg {
    animation: nudge-right 1.5s ease-in-out infinite;
  }

  .gear-scroll-hint-left {
    left: 0;
    background: linear-gradient(to left, transparent, var(--surface) 50%);
  }

  .gear-scroll-hint-left svg {
    animation: nudge-left 1.5s ease-in-out infinite;
  }

  @keyframes nudge-right {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(3px); }
  }

  @keyframes nudge-left {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(-3px); }
  }

  .gear-tab {
    flex: 0 0 auto;
    padding: 14px 20px;
    min-width: 140px;
    border-left: none;
    border-bottom: 2px solid transparent;
  }

  .gear-tab.active {
    border-left-color: transparent;
    border-bottom-color: var(--accent);
  }

  .gear-pane {
    padding: 24px 20px;
  }

  /* Form mobile */
  .form-row {
    grid-template-columns: 1fr;
  }

  /* Footer mobile */
  .footer-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}