/* ═══════════════════════════════════════════════════════════════════════
   ptfeballs.in — Production CSS
   Industrial · Minimal · Premium
   Author: Hemsun Engg. Industries
   ═══════════════════════════════════════════════════════════════════════ */

/* ── CUSTOM FONTS (self-hosted Inter, zero external requests) ─────── */
@font-face {
  font-family: 'Inter';
  src: url('fonts/inter-v20-latin-regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('fonts/inter-v20-latin-600.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('fonts/inter-v20-latin-700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ── DESIGN TOKENS ────────────────────────────────────────────────── */
:root {
  /* Brand palette — steel industrial */
  --c-navy:        #0A2540;
  --c-navy-mid:    #0F3460;
  --c-navy-light:  #1a4a7a;
  --c-steel:       #1e3a5f;
  --c-blue-accent: #2b7dca;
  --c-blue-light:  #5ba4e0;
  --c-white:       #ffffff;
  --c-off-white:   #f8fafc;
  --c-surface:     #f1f5f9;
  --c-border:      #e2e8f0;
  --c-text:        #0f172a;
  --c-text-mid:    #334155;
  --c-text-muted:  #64748b;
  --c-dark-bg:     #0d1f35;
  --c-dark-surface:#0f2540;
  --c-dark-border: #1e3a5f;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  --font-size-xs:   0.75rem;   /* 12px */
  --font-size-sm:   0.875rem;  /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-lg:   1.125rem;  /* 18px */
  --font-size-xl:   1.25rem;   /* 20px */
  --font-size-2xl:  1.5rem;    /* 24px */
  --font-size-3xl:  1.875rem;  /* 30px */
  --font-size-4xl:  2.25rem;   /* 36px */
  --font-size-5xl:  3rem;      /* 48px */
  --font-size-6xl:  3.75rem;   /* 60px */

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Borders */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.14);
  --shadow-xl:  0 16px 48px rgba(0,0,0,0.18);

  /* Transitions */
  --ease-base: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 400ms;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 68px;
  --container-padding-inline: var(--space-6);
}

@media (max-width: 640px) {
  :root {
    --container-padding-inline: var(--space-4);
  }
}

/* ── RESET & BASE ─────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.65;
  color: var(--c-text);
  background: var(--c-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--c-blue-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--duration-fast) var(--ease-base);
}

a:hover { color: var(--c-blue-light); }

ul, ol { list-style: none; }

table { border-collapse: collapse; width: 100%; }

details > summary { list-style: none; }
details > summary::-webkit-details-marker { display: none; }

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* ── CONTAINER ────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding-inline);
}

/* ── BUTTONS ──────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition:
    background var(--duration-base) var(--ease-base),
    color var(--duration-base) var(--ease-base),
    border-color var(--duration-base) var(--ease-base),
    box-shadow var(--duration-base) var(--ease-base),
    transform var(--duration-fast) var(--ease-base);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 3px solid var(--c-blue-light);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--c-blue-accent);
  color: var(--c-white);
  border-color: var(--c-blue-accent);
  box-shadow: 0 2px 12px rgba(43, 125, 202, 0.35);
}

.btn-primary:hover {
  background: #2268b0;
  border-color: #2268b0;
  color: var(--c-white);
  box-shadow: 0 4px 20px rgba(43, 125, 202, 0.5);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--c-white);
  border-color: rgba(255,255,255,0.5);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--c-white);
  color: var(--c-white);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--font-size-sm);
}

/* ── NAVIGATION ───────────────────────────────────────────────────── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(10, 37, 64, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background var(--duration-slow) var(--ease-base),
              box-shadow var(--duration-slow) var(--ease-base);
}

.site-nav.nav-scrolled {
  background: rgba(10, 37, 64, 0.98);
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon { width: 36px; height: 36px; }

.logo-text {
  font-size: var(--font-size-base);
  color: var(--c-white);
  letter-spacing: -0.01em;
}

.logo-text strong { font-weight: 700; color: var(--c-blue-light); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.nav-link {
  display: inline-block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast), background var(--duration-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--c-white);
  background: rgba(255,255,255,0.08);
}

.nav-link.nav-cta {
  background: var(--c-blue-accent);
  color: var(--c-white);
  padding: 0.45rem 1rem;
  font-weight: 600;
  margin-left: var(--space-2);
}

.nav-link.nav-cta:hover {
  background: #2268b0;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  background: none;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  display: block;
  width: 100%; height: 2px;
  background: var(--c-white);
  border-radius: 2px;
  transition: transform var(--duration-base) var(--ease-base),
              opacity var(--duration-base) var(--ease-base);
}

.nav-toggle.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2) { opacity: 0; }
.nav-toggle.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 900px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    z-index: 999;
    background: rgba(10, 37, 64, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    transform: translateY(-100%);
    transform-origin: top;
    opacity: 0;
    pointer-events: none;
    transition: transform var(--duration-slow) var(--ease-base),
                opacity var(--duration-slow) var(--ease-base);
  }

  .nav-links.nav-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
  }

  .nav-link.nav-cta {
    margin-left: 0;
    margin-top: var(--space-2);
    text-align: center;
    padding: var(--space-3);
  }
}

/* ── HERO SECTION ─────────────────────────────────────────────────── */
.hero-section {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--c-navy);
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 80% at 70% 50%, rgba(43,125,202,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 20% 30%, rgba(91,164,224,0.08) 0%, transparent 50%),
    linear-gradient(135deg, #081a2e 0%, #0A2540 40%, #0f3060 100%);
  z-index: 0;
}

/* Animated grid pattern */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  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: 60px 60px;
  z-index: 1;
}

.hero-image-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  mix-blend-mode: luminosity;
}

.hero-content {
  position: relative;
  z-index: 3;
  padding-block: var(--space-20);
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4);
  border: 1px solid rgba(91,164,224,0.4);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--space-6);
  background: rgba(43,125,202,0.08);
  backdrop-filter: blur(8px);
}

.hero-title {
  font-size: clamp(var(--font-size-4xl), 5vw, var(--font-size-6xl));
  font-weight: 700;
  line-height: 1.1;
  color: var(--c-white);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
  text-wrap: balance;
}

.hero-sub {
  font-size: clamp(var(--font-size-lg), 2vw, var(--font-size-xl));
  color: rgba(255,255,255,0.75);
  margin-bottom: var(--space-10);
  line-height: 1.7;
  max-width: 600px;
}

.hero-sub strong { color: var(--c-blue-light); font-weight: 600; }

.hero-cta-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
}

.hero-scroll-hint span {
  display: block;
  width: 24px; height: 40px;
  border: 2px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-full);
  position: relative;
}

.hero-scroll-hint span::before {
  content: '';
  position: absolute;
  top: 6px; left: 50%;
  width: 4px; height: 8px;
  background: rgba(255,255,255,0.5);
  border-radius: var(--radius-full);
  transform: translateX(-50%);
  animation: scrollHint 2s ease-in-out infinite;
}

@keyframes scrollHint {
  0% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(16px); }
}

/* ── TRUST BAR ────────────────────────────────────────────────────── */
.trust-bar {
  background: var(--c-navy-mid);
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: var(--space-6) 0;
}

.trust-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 1;
  min-width: 100px;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-slow) var(--ease-base),
              transform var(--duration-slow) var(--ease-base);
}

.trust-item.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.trust-number {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--c-blue-light);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.trust-label {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.55);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: var(--space-1);
}

.trust-divider {
  width: 1px; height: 40px;
  background: rgba(255,255,255,0.1);
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .trust-divider { display: none; }
  .trust-grid { justify-content: center; gap: var(--space-6); }
  .trust-item { min-width: 120px; }
}

/* ── SECTIONS COMMON ──────────────────────────────────────────────── */
.section {
  padding-block: var(--space-24);
}

.section-light  { background: var(--c-white); }
.section-surface{ background: var(--c-off-white); }
.section-dark   { background: var(--c-dark-bg); color: rgba(255,255,255,0.85); }

.section-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-blue-accent);
  margin-bottom: var(--space-3);
}

.section-dark .section-label { color: var(--c-blue-light); }

.section-title {
  font-size: clamp(var(--font-size-3xl), 3.5vw, var(--font-size-5xl));
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-6);
  color: var(--c-navy);
  text-wrap: balance;
}

.section-dark .section-title { color: var(--c-white); }

.section-intro {
  font-size: var(--font-size-lg);
  color: var(--c-text-mid);
  max-width: 760px;
  margin-bottom: var(--space-12);
  line-height: 1.7;
}

.section-dark .section-intro { color: rgba(255,255,255,0.7); }

/* ── ABOUT SECTION ────────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.lead-text {
  font-size: var(--font-size-lg);
  color: var(--c-text);
  margin-bottom: var(--space-4);
  line-height: 1.75;
}

.about-content p {
  color: var(--c-text-mid);
  margin-bottom: var(--space-4);
  line-height: 1.75;
}

.about-highlights {
  margin-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.about-highlights li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--font-size-base);
  color: var(--c-text);
}

.about-highlights svg {
  width: 18px; height: 18px;
  flex-shrink: 0;
  margin-top: 3px;
  stroke: var(--c-blue-accent);
}

.about-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.stat-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s var(--ease-base),
              transform 0.5s var(--ease-base),
              box-shadow var(--duration-base) var(--ease-base);
}

.stat-card.animate-in { opacity: 1; transform: translateY(0); }
.stat-card:hover { box-shadow: var(--shadow-md); }

.stat-card-icon {
  width: 44px; height: 44px;
  margin-bottom: var(--space-3);
  color: var(--c-blue-accent);
}

.stat-card-icon svg { width: 100%; height: 100%; }

.stat-card h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--c-navy);
  margin-bottom: var(--space-2);
}

.stat-card p {
  font-size: var(--font-size-sm);
  color: var(--c-text-muted);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: var(--space-12); }
}
@media (max-width: 480px) {
  .about-cards { grid-template-columns: 1fr; }
}

/* ── PRODUCTS SECTION ─────────────────────────────────────────────── */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.product-card {
  background: var(--c-dark-surface);
  border: 1px solid var(--c-dark-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.45s var(--ease-base),
              transform 0.45s var(--ease-base),
              border-color var(--duration-base) var(--ease-base),
              box-shadow var(--duration-base) var(--ease-base);
}

.product-card.animate-in { opacity: 1; transform: translateY(0); }

.product-card:hover {
  border-color: rgba(91,164,224,0.4);
  box-shadow: 0 0 0 1px rgba(91,164,224,0.15), var(--shadow-lg);
}

.product-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.product-sphere {
  width: 48px; height: 48px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
  background: radial-gradient(circle at 35% 30%, var(--sphere-color1, #e8edf2), var(--sphere-color2, #c8d5e0));
  box-shadow:
    inset -4px -4px 8px rgba(0,0,0,0.2),
    inset 4px 4px 8px rgba(255,255,255,0.4),
    0 4px 12px rgba(0,0,0,0.3);
}

.product-sphere-custom {
  background: conic-gradient(from 0deg, #c8d5e0, #6b7280, #c97b3a, #c8d5e0);
  animation: spinSphere 8s linear infinite;
}

@keyframes spinSphere {
  to { transform: rotate(360deg); }
}

.product-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--c-white);
  line-height: 1.2;
}

.product-card p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.65);
  line-height: 1.65;
  margin-bottom: var(--space-4);
}

.product-props {
  border-top: 1px solid var(--c-dark-border);
  padding-top: var(--space-4);
  margin-bottom: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.prop-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
}

.prop-label {
  color: rgba(255,255,255,0.45);
  font-weight: 500;
  flex-shrink: 0;
}

.prop-value {
  color: rgba(255,255,255,0.8);
  text-align: right;
  font-weight: 500;
}

.product-apps {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.product-apps li {
  font-size: var(--font-size-xs);
  color: var(--c-blue-light);
  background: rgba(43,125,202,0.15);
  border: 1px solid rgba(43,125,202,0.25);
  border-radius: var(--radius-full);
  padding: 3px 10px;
  font-weight: 500;
}

.product-card-cta {
  border: 1px dashed rgba(91,164,224,0.3);
}

.custom-cta-block {
  margin-top: auto;
}

.custom-cta-block p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.55);
  margin-bottom: var(--space-4);
}

@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .products-grid { grid-template-columns: 1fr; }
}

/* ── DATA TABLES ──────────────────────────────────────────────────── */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
  margin-bottom: var(--space-4);
  -webkit-overflow-scrolling: touch;
}

.section-dark .table-wrapper {
  border-color: var(--c-dark-border);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
  min-width: 540px;
}

.data-table thead tr {
  background: var(--c-navy);
}

.section-dark .data-table thead tr {
  background: rgba(10, 37, 64, 0.8);
}

.data-table th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: rgba(255,255,255,0.8);
  white-space: nowrap;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.data-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--c-border);
  vertical-align: middle;
  color: var(--c-text-mid);
}

.section-dark .data-table td {
  border-bottom-color: var(--c-dark-border);
  color: rgba(255,255,255,0.7);
}

.data-table tbody tr:last-child td { border-bottom: none; }

.data-table tbody tr:hover td {
  background: var(--c-surface);
}

.section-dark .data-table tbody tr:hover td {
  background: rgba(255,255,255,0.04);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.badge-green  { background: rgba(34,197,94,0.15);  color: #22c55e; border: 1px solid rgba(34,197,94,0.3); }
.badge-blue   { background: rgba(59,130,246,0.15); color: #60a5fa; border: 1px solid rgba(59,130,246,0.3); }
.badge-orange { background: rgba(249,115,22,0.15); color: #fb923c; border: 1px solid rgba(249,115,22,0.3); }

.table-note {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.55);
  margin-top: var(--space-4);
}

.sizes-cta {
  text-align: center;
  margin-top: var(--space-8);
}

/* ── APPLICATIONS ─────────────────────────────────────────────────── */
.applications-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.app-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s var(--ease-base),
              transform 0.4s var(--ease-base),
              box-shadow var(--duration-base) var(--ease-base),
              border-color var(--duration-base) var(--ease-base);
}

.app-card.animate-in { opacity: 1; transform: translateY(0); }

.app-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(43,125,202,0.3);
}

.app-icon {
  width: 44px; height: 44px;
  margin-bottom: var(--space-4);
  color: var(--c-blue-accent);
}

.app-icon svg { width: 100%; height: 100%; }

.app-card h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--c-navy);
  margin-bottom: var(--space-2);
}

.app-card p {
  font-size: var(--font-size-sm);
  color: var(--c-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-3);
}

.app-card ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.app-card ul li {
  font-size: var(--font-size-xs);
  color: var(--c-text-muted);
  padding-left: var(--space-4);
  position: relative;
}

.app-card ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--c-blue-accent);
}

@media (max-width: 1024px) { .applications-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px)  { .applications-grid { grid-template-columns: 1fr; } }

/* ── PROCESS STEPS ────────────────────────────────────────────────── */
.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  list-style: none;
  counter-reset: step-counter;
}

.process-step {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--c-dark-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: relative;
}

.process-step-num {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--c-blue-light);
  opacity: 0.7;
  letter-spacing: 0.08em;
}

.process-step-icon {
  width: 48px; height: 48px;
  color: var(--c-blue-accent);
  flex-shrink: 0;
}

.process-step-icon svg { width: 100%; height: 100%; }

.process-step-content h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--c-white);
  margin-bottom: var(--space-2);
}

.process-step-content p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  line-height: 1.65;
}

@media (max-width: 1024px) { .process-steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  { .process-steps { grid-template-columns: 1fr; } }

/* ── WHY CHOOSE US ────────────────────────────────────────────────── */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.why-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.why-list li {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.45s var(--ease-base), transform 0.45s var(--ease-base);
}

.why-list li.animate-in { opacity: 1; transform: translateX(0); }

.why-icon {
  width: 24px; height: 24px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(43,125,202,0.15);
  border-radius: var(--radius-full);
  margin-top: 2px;
}

.why-icon svg {
  width: 14px; height: 14px;
  stroke: var(--c-blue-light);
}

.why-list strong {
  display: block;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--c-navy);
  margin-bottom: var(--space-1);
}

.why-list p {
  font-size: var(--font-size-sm);
  color: var(--c-text-muted);
  line-height: 1.65;
}

/* OEM Panel */
.oem-panel {
  background: var(--c-navy);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  color: rgba(255,255,255,0.85);
  position: sticky;
  top: calc(var(--nav-height) + var(--space-8));
}

.oem-panel h3 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.oem-panel > p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.65);
  margin-bottom: var(--space-6);
  line-height: 1.7;
}

.oem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.oem-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s var(--ease-base), transform 0.4s var(--ease-base);
}

.oem-item.animate-in { opacity: 1; transform: translateY(0); }

.oem-item-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--c-blue-light);
  margin-bottom: var(--space-1);
}

.oem-item-desc {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.5);
  line-height: 1.55;
}

@media (max-width: 1024px) {
  .why-grid { grid-template-columns: 1fr; }
  .oem-panel { position: static; }
}

/* ── FAQ SECTION ──────────────────────────────────────────────────── */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  align-items: start;
}

.faq-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--c-dark-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--duration-base) var(--ease-base);
}

.faq-item[open] {
  border-color: rgba(91,164,224,0.35);
}

.faq-item summary {
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--c-white);
  position: relative;
  padding-right: var(--space-12);
  user-select: none;
  line-height: 1.45;
}

.faq-item summary:hover { color: var(--c-blue-light); }

.faq-item summary::after {
  content: '+';
  position: absolute;
  right: var(--space-5);
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--font-size-xl);
  font-weight: 300;
  color: var(--c-blue-accent);
  line-height: 1;
  transition: transform var(--duration-base) var(--ease-base),
              content var(--duration-base) var(--ease-base);
}

.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.faq-answer {
  padding: 0 var(--space-5) var(--space-4);
  border-top: 1px solid var(--c-dark-border);
}

.faq-answer p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
  padding-top: var(--space-3);
}

.faq-answer p strong { color: rgba(255,255,255,0.85); }

@media (max-width: 900px) { .faq-grid { grid-template-columns: 1fr; } }

/* ── CONTACT SECTION ──────────────────────────────────────────────── */
.section-contact {
  background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-mid) 60%, var(--c-steel) 100%);
  color: var(--c-white);
  padding-block: var(--space-24);
}

.contact-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: var(--space-12);
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-address {
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-info-item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.75);
  line-height: 1.65;
}

.contact-info-item strong {
  color: var(--c-white);
  font-weight: 600;
}

.contact-icon {
  width: 20px; height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--c-blue-light);
}

.contact-serving h3 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-blue-light);
  margin-bottom: var(--space-2);
}

.contact-serving p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.65);
  line-height: 1.75;
}

.contact-form-wrapper {
  scroll-margin-top: calc(var(--nav-height) + var(--container-padding-inline));
  background: rgba(15, 37, 64, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.contact-form-wrapper iframe {
  display: block;
  width: 100%;
  border-radius: var(--radius-lg);
  background: transparent;
}

.form-note {
  text-align: center;
  padding: var(--space-3);
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.4);
}

@media (max-width: 1024px) {
  .contact-layout { grid-template-columns: 1fr; }
}

/* ── FOOTER ───────────────────────────────────────────────────────── */
.site-footer {
  background: #06111f;
  color: rgba(255,255,255,0.6);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-12);
  padding-block: var(--space-16);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  margin-bottom: var(--space-4);
}

.footer-logo-icon { width: 32px; height: 32px; }

.footer-logo span {
  font-size: var(--font-size-base);
  color: rgba(255,255,255,0.8);
}

.footer-logo strong { color: var(--c-blue-light); }

.footer-desc {
  font-size: var(--font-size-sm);
  line-height: 1.7;
  color: rgba(255,255,255,0.45);
}

.footer-links h4,
.footer-contact h4 {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-4);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  transition: color var(--duration-fast);
}

.footer-links a:hover { color: var(--c-blue-light); }

.footer-contact address {
  font-style: normal;
  font-size: var(--font-size-sm);
  line-height: 1.8;
  color: rgba(255,255,255,0.5);
}

.footer-contact a {
  color: var(--c-blue-light);
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-block: var(--space-6);
}

.footer-bottom-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-bottom p {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.3);
  line-height: 1.7;
}

.footer-bottom strong { color: rgba(255,255,255,0.5); }

@media (max-width: 900px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: span 2; }
}
@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
}

/* ── FLOATING ACTION BUTTONS ──────────────────────────────────────── */
.float-whatsapp,
.float-cta {
  position: fixed;
  bottom: var(--space-8);
  z-index: 900;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.7rem 1.4rem;
  color: var(--c-white);
  text-decoration: none;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--font-size-sm);
  opacity: 0;
  pointer-events: none;
  transform: translateY(16px) scale(0.95);
  transition: opacity var(--duration-slow) var(--ease-base),
              transform var(--duration-slow) var(--ease-base),
              box-shadow var(--duration-base) var(--ease-base);
}

.float-whatsapp.float-visible,
.float-cta.float-visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0) scale(1);
}

.float-whatsapp {
  left: var(--container-padding-inline);
  background: #25D366;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45);
}

.float-cta {
  right: var(--container-padding-inline);
  background: var(--c-blue-accent);
  box-shadow: 0 4px 20px rgba(43,125,202,0.5);
}

.float-whatsapp:hover,
.float-cta:hover {
  color: var(--c-white);
  transform: translateY(-2px) scale(1.02);
}

.float-whatsapp:hover {
  box-shadow: 0 8px 32px rgba(37, 211, 102, 0.55);
}

.float-cta:hover {
  box-shadow: 0 8px 32px rgba(43,125,202,0.6);
}

.float-whatsapp svg,
.float-cta svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .float-whatsapp,
  .float-cta {
    bottom: var(--space-6);
    padding: 0.9rem;
  }

  .float-whatsapp span,
  .float-cta span {
    display: none;
  }
}

/* ── ANIMATION UTILITIES ──────────────────────────────────────────── */
.animate-in {
  opacity: 1 !important;
  transform: none !important;
}

/* ── FOCUS STYLES (accessibility) ────────────────────────────────── */
:focus-visible {
  outline: 3px solid var(--c-blue-light);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ── PRINT STYLES ─────────────────────────────────────────────────── */
@media print {
  .site-nav, .float-cta, .float-whatsapp, .hero-scroll-hint, .btn { display: none; }
  .hero-section { min-height: auto; padding-block: 2rem; }
  .section { padding-block: 2rem; }
  body { color: #000; background: #fff; }
  a { color: #000; }
}

/* ── REDUCED MOTION ───────────────────────────────────────────────── */
@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;
  }
  .hero-scroll-hint span::before { animation: none; }
  .product-sphere-custom { animation: none; }

  /* Still show elements even without animation */
  .stat-card,
  .product-card,
  .app-card,
  .process-step,
  .why-list li,
  .oem-item,
  .trust-item {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ── MOBILE RESPONSIVE OVERRIDES ─────────────────────────────────── */
@media (max-width: 768px) {
  :root {
    --space-24: 4rem;
    --space-20: 3rem;
    --space-16: 2.5rem;
  }

  .hero-section { min-height: 80vh; }
  .hero-content { padding-block: var(--space-16); }
  .hero-cta-row { flex-direction: column; align-items: flex-start; gap: var(--space-3); }
  .hero-cta-row .btn { width: 100%; justify-content: center; max-width: 300px; }

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

  .section-title { font-size: var(--font-size-3xl); }

  .oem-grid { grid-template-columns: 1fr; }
  .oem-panel { padding: var(--space-6); }
}

@media (max-width: 480px) {
  .hero-title { font-size: var(--font-size-3xl); }
  .hero-sub { font-size: var(--font-size-base); }

  .contact-form-wrapper iframe { height: 560px; }
}

/* ── HIGH CONTRAST MODE ───────────────────────────────────────────── */
@media (forced-colors: active) {
  .btn-primary { forced-color-adjust: none; }
}