:root {
  /* Concrete & Steel Palette */
  --ink-950: #0a0e12;
  --ink-900: #12181f;
  --ink-800: #1e2834;
  --ink-700: #334355;
  --steel-300: #8c9bad;
  --steel-200: #c1cdd8;
  --steel-100: #e4e9ef;
  --concrete-50: #f4f6f8;
  
  /* Construction Accents */
  --signal: #f59e0b;
  --signal-dark: #d97706;
  --accent: #2563eb; /* Blueprint accent */
  --white: #ffffff;
  --font-sans: "SF Pro Text", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  
  /* Structural Geometry */
  --radius: 20px;
  --radius-sm: 14px;
  
  /* Precision Shadows */
  --shadow-xl: 0 20px 44px rgba(6, 14, 22, 0.3);
  --shadow-md: 0 10px 24px rgba(6, 14, 22, 0.2);
  --shadow-hard: 0 12px 28px rgba(6, 14, 22, 0.34);
  
  --hazard-stripe: repeating-linear-gradient(45deg, var(--signal), var(--signal) 10px, #12181f 10px, #12181f 20px);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--steel-100);
  min-height: 100vh;
  /* Dark blueprint/graph paper background */
  background-color: #0c131a;
  background-image: 
    linear-gradient(rgba(152, 177, 199, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(152, 177, 199, 0.18) 1px, transparent 1px),
    radial-gradient(circle at 12% 10%, rgba(37, 99, 235, 0.16), transparent 34%),
    radial-gradient(circle at 88% 90%, rgba(245, 158, 11, 0.14), transparent 30%),
    linear-gradient(180deg, #0d151d 0%, #111d28 55%, #0b131a 100%);
  background-size: 32px 32px;
  background-position: top center;
  line-height: 1.6;
}

.bg-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

/* Subtle architectural crosshairs in background */
.bg-overlay::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(rgba(140, 155, 173, 0.32) 1px, transparent 1px);
  background-size: 128px 128px;
  background-position: -1px -1px;
}

.bg-overlay::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.12) 0%, transparent 60%),
    radial-gradient(circle at 90% 80%, rgba(245, 158, 11, 0.12) 0%, transparent 50%);
}

.container {
  width: min(1120px, 100% - 2rem);
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

/* Structural Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 2px solid rgba(193, 205, 216, 0.35);
  background: rgba(9, 17, 24, 0.9);
  backdrop-filter: blur(8px);
}

/* Add a continuous hazard stripe at the very top of the page */
.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--hazard-stripe);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: relative;
  margin-top: 4px; /* offset for the hazard stripe */
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--steel-100);
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.1em; /* Architectural tracking */
  text-transform: uppercase;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 999px;
  object-fit: cover;
  object-position: center;
  border: 2px solid rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.08);
  padding: 1px;
  box-shadow: 0 0 0 2px rgba(10, 14, 18, 0.5);
}

.brand-text {
  display: inline-block;
  line-height: 1;
  white-space: nowrap;
}

.mobile-menu-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 0;
  border: 2px solid rgba(193, 205, 216, 0.45);
  background: rgba(255, 255, 255, 0.08);
  cursor: pointer;
  padding: 0 10px;
  box-shadow: 2px 2px 0 rgba(193, 205, 216, 0.4);
  transition: transform 0.1s, box-shadow 0.1s;
}

.mobile-menu-toggle:active {
  transform: translate(2px, 2px);
  box-shadow: 0 0 0 var(--ink-900);
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--steel-100);
  transition: all 0.2s ease;
}

.mobile-menu-toggle:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.site-header.menu-open .mobile-menu-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.menu-open .mobile-menu-toggle span:nth-child(2) {
  opacity: 0;
}

.site-header.menu-open .mobile-menu-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-nav {
  display: none;
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  width: min(240px, calc(100vw - 2rem));
  border-radius: 0;
  border: 2px solid rgba(193, 205, 216, 0.45);
  background: rgba(8, 15, 22, 0.98);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.35);
  padding: 0.5rem;
  gap: 0.25rem;
  z-index: 60;
}

.site-nav a {
  text-decoration: none;
  color: var(--steel-100);
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-weight: 700;
  border: 1px solid transparent;
  transition: all 0.2s;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  border-color: rgba(193, 205, 216, 0.6);
  background: rgba(255, 255, 255, 0.08);
}

.site-nav a.nav-cta {
  border-color: rgba(245, 158, 11, 0.75);
  background: rgba(245, 158, 11, 0.12);
  color: #ffdba4;
}

.site-header.menu-open .site-nav {
  display: grid;
}

.section {
  padding: 4rem 0;
  position: relative;
}

.hero {
  padding-top: 1.25rem;
}

.hero-layout {
  display: grid;
  gap: 1.5rem;
}

/* Architectural Hero Block */
.hero-main {
  background: var(--ink-950);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 20px 20px;
  border: 2px solid var(--ink-900);
  border-left: 6px solid var(--accent); /* Structural pillar indicator */
  color: var(--concrete-50);
  padding: 2rem;
  box-shadow: 8px 8px 0 var(--ink-900);
  position: relative;
}

.hero-main::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 40px;
  height: 40px;
  border-left: 2px solid var(--ink-800);
  border-bottom: 2px solid var(--ink-800);
  background: repeating-linear-gradient(45deg, transparent, transparent 4px, rgba(255,255,255,0.05) 4px, rgba(255,255,255,0.05) 8px);
}

.eyebrow {
  margin: 0;
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--signal);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Small square indicator like a laser level */
.eyebrow::before {
  content: "";
  display: block;
  width: 6px;
  height: 6px;
  background: var(--signal);
}

h1,h2,h3,h4 {
  margin: 0;
  font-family: var(--font-sans);
  line-height: 1.1;
  text-transform: uppercase;
}

h1 {
  margin-top: 1rem;
  font-size: clamp(2.2rem, 8vw, 4.2rem);
  max-width: 14ch;
  letter-spacing: 0.02em;
  color: var(--white);
  font-weight: 700;
}

#hero-bio,
#hero-intro {
  margin: 1.2rem 0 0;
  max-width: 70ch;
  font-size: 1rem;
  color: var(--steel-200);
  position: relative;
  z-index: 1;
}

.cta-row {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  position: relative;
  z-index: 1;
}

/* Rugged, mechanical buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-family: var(--font-sans);
  border: 2px solid var(--ink-900);
  border-radius: 0;
  color: var(--ink-950);
  background: var(--white);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--ink-900);
  transition: transform 0.1s, box-shadow 0.1s;
}

.btn:hover,
.btn:focus-visible {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--ink-900);
}

.btn:active {
  transform: translate(4px, 4px);
  box-shadow: 0 0 0 var(--ink-900);
}

.btn-primary {
  background: var(--signal);
}

.hero-main .btn {
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--white);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 4px 4px 0 rgba(255, 255, 255, 0.4);
}

.hero-main .btn:hover,
.hero-main .btn:focus-visible {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 rgba(255, 255, 255, 0.4);
}

.hero-main .btn:active {
  transform: translate(4px, 4px);
  box-shadow: 0 0 0 rgba(255, 255, 255, 0.4);
}

.hero-main .btn-primary {
  background: var(--signal);
  color: var(--ink-950);
  border-color: var(--signal);
  box-shadow: 4px 4px 0 var(--signal-dark);
}
.hero-main .btn-primary:hover,
.hero-main .btn-primary:focus-visible {
  box-shadow: 2px 2px 0 var(--signal-dark);
}
.hero-main .btn-primary:active {
  box-shadow: 0 0 0 var(--signal-dark);
}

/* Secondary Panel styling as Specs box */
.hero-panel {
  border: 2px solid var(--ink-900);
  background: var(--white);
  padding: 1.5rem;
  box-shadow: 8px 8px 0 var(--ink-900);
  position: relative;
  /* Diagonal tape accent on top right */
}

.hero-panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 40px;
  height: 40px;
  background: var(--hazard-stripe);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
}

.panel-kicker {
  margin: 0;
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--ink-700);
  font-size: 0.85rem;
  font-weight: 700;
}

.hero-panel h2 {
  margin-top: 0.5rem;
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  color: var(--ink-950);
  letter-spacing: 0.02em;
}

.stats-list {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1rem;
}

.stats-list li {
  border: 1px solid var(--steel-300);
  border-left: 4px solid var(--ink-900);
  padding: 0.75rem 1rem;
  background: var(--concrete-50);
}

.stats-list span {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--ink-700);
  font-weight: 700;
}

.stats-list strong {
  display: block;
  font-family: var(--font-sans);
  margin-top: 0.2rem;
  color: var(--ink-950);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.section-head {
  margin-bottom: 2rem;
  border-bottom: 2px solid rgba(193, 205, 216, 0.35);
  padding-bottom: 1.5rem;
}

.section-id {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: #79b8ff; /* Blueprint blue id */
  font-weight: 700;
}

.section-head h2 {
  margin-top: 0.5rem;
  font-size: clamp(2rem, 6vw, 3rem);
  color: #e8f1f8;
}

.section-head p {
  margin: 0.75rem 0 0;
  max-width: 65ch;
  color: #bdd0de;
  font-size: 1.05rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  font-family: var(--font-sans);
  border: 2px solid var(--ink-900);
  color: var(--ink-900);
  background: var(--concrete-50);
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all 0.2s;
}
.chip:hover, .chip:focus-visible {
  background: var(--ink-900);
  color: var(--signal);
}

.stack-block {
  display: grid;
  gap: 2rem;
}

.video-category {
  border: 2px solid var(--ink-900);
  background: var(--white);
  padding: 1.5rem;
  box-shadow: 8px 8px 0 var(--ink-900);
  position: relative;
}

/* Header bar for category */
.video-category::before {
  content: "";
  position: absolute;
  left: -2px;
  top: -2px;
  right: -2px;
  height: 8px;
  background: var(--hazard-stripe);
  border: 2px solid var(--ink-900);
}

.video-category > h3 {
  margin-top: 0.5rem;
  font-size: 1.8rem;
  color: var(--ink-950);
}

.video-grid {
  margin-top: 1.5rem;
  display: grid;
  gap: 1.5rem;
}

.video-card {
  border: 2px solid var(--steel-300);
  padding: 1rem;
  background: var(--white);
  transition: all 0.2s;
  position: relative;
}

/* Subtle corner anchors */
.video-card::after {
  content: "";
  position: absolute;
  bottom: -2px;
  right: -2px;
  width: 12px;
  height: 12px;
  border-right: 2px solid var(--ink-900);
  border-bottom: 2px solid var(--ink-900);
  opacity: 0;
  transition: opacity 0.2s;
}

.video-card:hover {
  border-color: var(--ink-900);
  transform: translateY(-2px);
  box-shadow: 6px 6px 0 rgba(25, 34, 45, 0.15);
}

.video-card:hover::after {
  opacity: 1;
}

.video-frame {
  width: 100%;
  aspect-ratio: 9 / 16;
  border: 2px solid var(--ink-900);
  background: var(--ink-950);
}

.video-card h4 {
  margin: 1rem 0 0.25rem;
  font-size: 1.1rem;
  color: var(--ink-950);
}

.video-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-700);
}

.related-docs {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--steel-300);
}

.related-docs a {
  text-decoration: none;
  font-family: var(--font-sans);
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
}

.related-docs a::before {
  content: "↳";
  margin-right: 0.25rem;
}

.related-docs a:hover,
.related-docs a:focus-visible {
  color: var(--ink-900);
  text-decoration: underline;
}

/* Consultation Form Section */
.section-alt {
  background: rgba(12, 20, 27, 0.75);
  border-top: 2px solid rgba(193, 205, 216, 0.35);
  border-bottom: 2px solid rgba(193, 205, 216, 0.35);
}

.inquiry-form {
  position: relative;
  border: 2px solid var(--ink-900);
  background: var(--white);
  padding: 2rem;
  box-shadow: 8px 8px 0 var(--ink-900);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
  margin-bottom: 1.5rem;
}

label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  color: var(--ink-900);
}

input,
select,
textarea {
  width: 100%;
  margin-top: 0.4rem;
  border: 2px solid var(--steel-300);
  border-radius: 0;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--ink-950);
  background: var(--concrete-50);
  transition: all 0.2s;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: var(--ink-900);
  background: var(--white);
  box-shadow: 4px 4px 0 var(--signal);
}

.form-help {
  margin: 1rem 0 0;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-700);
  font-weight: 600;
}

.full-row {
  grid-column: 1 / -1;
}

/* Documents section */
.documents-grid {
  display: grid;
  gap: 1.5rem;
}

.doc-card {
  border: 2px solid var(--ink-900);
  padding: 1.5rem;
  background: var(--white);
  box-shadow: 6px 6px 0 rgba(18, 25, 33, 0.15);
  position: relative;
  display: flex;
  flex-direction: column;
}

/* Small clip accent on documents like a folded paper corner, but sharp */
.doc-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 24px;
  height: 24px;
  background: var(--steel-200);
  border-bottom: 2px solid var(--ink-900);
  border-left: 2px solid var(--ink-900);
}

.doc-card h3 {
  font-size: 1.25rem;
  color: var(--ink-950);
  margin-top: 0.5rem;
}

.doc-card p {
  margin: 0.75rem 0;
  color: var(--ink-800);
  font-size: 0.95rem;
  flex: 1;
}

.doc-meta {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--signal-dark);
  font-weight: 700;
}

.doc-actions {
  margin-top: 1.5rem;
}

.empty-state {
  border: 2px dashed var(--steel-300);
  padding: 2rem;
  background: rgba(255,255,255,0.5);
  color: var(--ink-700);
  font-family: var(--font-sans);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-align: center;
}

.site-footer {
  border-top: 4px solid var(--ink-900);
  background: var(--ink-950);
  color: var(--steel-200);
}

.footer-inner {
  min-height: 80px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.5rem;
}

.footer-inner p {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-inner a {
  color: var(--signal);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
}
.footer-inner a:hover {
  text-decoration: underline;
  color: var(--accent);
}

.whatsapp-float {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-width: 152px;
  min-height: 48px;
  padding: 0.72rem 1rem;
  border: 2px solid #0b4728;
  background: #25d366;
  color: #062c18;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: none;
  letter-spacing: 0.01em;
  text-decoration: none;
  box-shadow: 4px 4px 0 #0b4728;
  border-radius: 999px;
  animation: wa-pulse 2200ms ease-in-out infinite;
}

.wa-icon {
  width: 1.85rem;
  height: 1.85rem;
  border-radius: 0;
  background: transparent;
  color: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.wa-icon-image {
  width: 100%;
  height: 100%;
  display: block;
}

.whatsapp-float:hover,
.whatsapp-float:focus-visible {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 #0b4728;
}

.whatsapp-float:active {
  transform: translate(4px, 4px);
  box-shadow: 0 0 0 #0b4728;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  animation: reveal-up 600ms ease forwards;
  animation-delay: 90ms;
}

[data-reveal]:nth-of-type(2) {
  animation-delay: 170ms;
}

[data-reveal]:nth-of-type(3) {
  animation-delay: 230ms;
}

[data-reveal]:nth-of-type(4) {
  animation-delay: 290ms;
}

@keyframes reveal-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes wa-pulse {
  0%,
  100% {
    box-shadow: 4px 4px 0 #0b4728, 0 0 0 0 rgba(37, 211, 102, 0.28);
  }
  55% {
    box-shadow: 4px 4px 0 #0b4728, 0 0 0 12px rgba(37, 211, 102, 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .whatsapp-float {
    animation: none;
  }
}

@media (min-width: 760px) {
  .container {
    width: min(1120px, 100% - 3rem);
  }

  .brand-logo {
    width: 48px;
    height: 48px;
  }

  .mobile-menu-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: auto;
    border: 0;
    background: transparent;
    box-shadow: none;
    padding: 0;
  }

  .site-nav a {
    border: 2px solid transparent;
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
    color: var(--steel-100);
  }

  .site-nav a.nav-cta {
    border-color: rgba(245, 158, 11, 0.55);
    background: rgba(245, 158, 11, 0.1);
  }

  .site-nav a:hover,
  .site-nav a:focus-visible {
    border-color: rgba(193, 205, 216, 0.5);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 4px 4px 0 rgba(245, 158, 11, 0.5);
    transform: translate(-2px, -2px);
  }
  .site-nav a:active {
    transform: translate(0, 0);
    box-shadow: 0 0 0 transparent;
  }

  .hero-layout {
    grid-template-columns: 1.5fr 1fr;
    align-items: stretch;
  }

  .hero-main {
    padding: 3rem;
  }
  
  .hero-panel {
    padding: 2.5rem;
  }

  .section {
    padding: 6rem 0;
  }

  .video-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .documents-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  
  .inquiry-form {
    padding: 3rem;
  }
}

@media (min-width: 1060px) {
  .hero {
    padding-top: 1.75rem;
  }

  .hero-main {
    padding: 3.5rem;
  }
  
  .video-grid {
    gap: 2rem;
  }
}

/* Apple UI refinement layer */
body {
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
.brand,
.site-nav a,
.btn,
.chip,
.section-id,
.eyebrow,
label,
.form-help,
.doc-meta,
.footer-inner p,
.footer-inner a,
.whatsapp-float {
  font-family: var(--font-sans);
  letter-spacing: 0.01em;
  text-transform: none;
}

.site-header::before,
.video-category::before,
.hero-panel::before,
.hero-main::after,
.doc-card::before,
.eyebrow::before {
  display: none;
}

.header-inner {
  margin-top: 0;
}

.site-header {
  border-bottom: 1px solid rgba(193, 205, 216, 0.25);
  background: rgba(9, 16, 24, 0.72);
  backdrop-filter: blur(14px) saturate(160%);
}

.mobile-menu-toggle,
.site-nav,
.hero-main,
.hero-panel,
.video-category,
.video-card,
.inquiry-form,
.doc-card,
.btn,
.chip,
input,
select,
textarea,
.whatsapp-float {
  border-radius: var(--radius-sm);
}

.mobile-menu-toggle {
  border: 1px solid rgba(193, 205, 216, 0.45);
  box-shadow: var(--shadow-md);
}

.mobile-menu-toggle:active {
  transform: translateY(1px);
  box-shadow: var(--shadow-md);
}

.site-nav {
  border: 1px solid rgba(193, 205, 216, 0.3);
  box-shadow: var(--shadow-xl);
}

.site-nav a {
  font-weight: 600;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  transform: none;
  box-shadow: none;
  background: rgba(255, 255, 255, 0.14);
}

.hero-main,
.hero-panel,
.video-category,
.inquiry-form,
.doc-card {
  border: 1px solid rgba(193, 205, 216, 0.3);
  box-shadow: var(--shadow-xl);
}

.hero-main {
  border-left: 1px solid rgba(37, 99, 235, 0.55);
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
}

.btn {
  border: 1px solid rgba(18, 24, 31, 0.5);
  box-shadow: 0 10px 24px rgba(6, 14, 22, 0.24);
  font-weight: 600;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 16px 28px rgba(6, 14, 22, 0.28);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 8px 16px rgba(6, 14, 22, 0.2);
}

.hero-main .btn {
  border: 1px solid rgba(255, 255, 255, 0.26);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 24px rgba(3, 8, 12, 0.35);
}

.hero-main .btn-primary {
  background: linear-gradient(180deg, #ffbd4a 0%, #f59e0b 100%);
  border-color: #f5b340;
}

.chip {
  border: 1px solid rgba(18, 24, 31, 0.5);
  border-radius: 999px;
  font-weight: 600;
}

.video-frame {
  border: 1px solid rgba(18, 24, 31, 0.45);
}

input,
select,
textarea {
  border: 1px solid rgba(140, 155, 173, 0.7);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  border-color: rgba(37, 99, 235, 0.95);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.24);
}

.site-footer {
  border-top: 1px solid rgba(193, 205, 216, 0.26);
}

.whatsapp-float {
  letter-spacing: 0.01em;
  box-shadow: 0 16px 30px rgba(6, 14, 22, 0.35);
}

.whatsapp-float:hover,
.whatsapp-float:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 22px 34px rgba(6, 14, 22, 0.4);
}

.whatsapp-float:active {
  transform: translateY(0);
}

@media (max-width: 540px) {
  .whatsapp-float {
    right: 0.75rem;
    bottom: 0.75rem;
    min-width: 0;
    max-width: calc(100vw - 1.5rem);
    padding: 0.7rem 0.9rem;
    font-size: 0.84rem;
    gap: 0.45rem;
  }
}

@media (min-width: 760px) {
  .site-nav a {
    border: 1px solid transparent;
  }

  .site-nav a:hover,
  .site-nav a:focus-visible,
  .site-nav a:active {
    transform: none;
    box-shadow: none;
  }
}

/* Brand + background refinement */
body {
  background-color: #091018;
  background-image:
    radial-gradient(circle at 12% 14%, rgba(37, 99, 235, 0.24), transparent 34%),
    radial-gradient(circle at 86% 82%, rgba(245, 158, 11, 0.16), transparent 30%),
    linear-gradient(rgba(133, 161, 184, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(133, 161, 184, 0.14) 1px, transparent 1px),
    linear-gradient(180deg, #081018 0%, #0d1822 48%, #081018 100%);
  background-size: auto, auto, 46px 46px, 46px 46px, auto;
}

.bg-overlay::before {
  background-image:
    linear-gradient(90deg, rgba(122, 149, 171, 0.12) 1px, transparent 1px),
    linear-gradient(rgba(122, 149, 171, 0.12) 1px, transparent 1px);
  background-size: 128px 128px;
  opacity: 0.45;
}

.bg-overlay::after {
  background:
    radial-gradient(circle at 18% 20%, rgba(37, 99, 235, 0.18) 0%, transparent 44%),
    radial-gradient(circle at 78% 78%, rgba(245, 158, 11, 0.12) 0%, transparent 36%);
}

.site-header {
  background: rgba(7, 14, 20, 0.78);
  border-bottom: 1px solid rgba(193, 205, 216, 0.22);
}

.brand {
  gap: 0.6rem;
}

.brand-logo {
  width: 46px;
  height: 46px;
  border-radius: 999px;
  box-shadow: 0 0 0 2px rgba(8, 14, 20, 0.72), 0 8px 18px rgba(3, 8, 12, 0.32);
}

.brand-text {
  display: inline-grid;
  gap: 0.08rem;
  padding: 0.32rem 0.62rem 0.34rem;
  border: 1px solid rgba(193, 205, 216, 0.32);
  border-radius: 10px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03)),
    rgba(6, 11, 16, 0.74);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22), 0 8px 18px rgba(3, 8, 12, 0.24);
  line-height: 1;
}

.brand-word {
  display: block;
  color: #dce8f2;
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.brand-word-accent {
  color: #ffd078;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.2em;
}

@media (max-width: 540px) {
  .brand-text {
    padding: 0.26rem 0.5rem 0.28rem;
  }

  .brand-word {
    font-size: 0.5rem;
  }

  .brand-word-accent {
    font-size: 0.68rem;
  }
}