/* =========================================================
   VEXON SUPPLY GROUP LLC — Stylesheet
   Mobile-first, vanilla CSS, no frameworks
   ========================================================= */

:root {
  --color-primary: #0A2540;
  --color-primary-light: #15406b;
  --color-primary-dark: #061829;
  --color-accent: #C9A032;
  --color-accent-light: #e3c46a;
  --color-text: #1a1f2b;
  --color-text-muted: #5b6577;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fa;
  --color-border: #e3e7ee;

  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --container-width: 1180px;
  --radius: 10px;
  --transition: 0.25s ease;
  --shadow-sm: 0 2px 10px rgba(10, 37, 64, 0.06);
  --shadow-md: 0 8px 30px rgba(10, 37, 64, 0.12);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* =========================================================
   TOP BAR
   ========================================================= */

.top-bar {
  background: var(--color-primary-dark);
  color: #cfd8e3;
  text-align: center;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  padding: 7px 16px;
}

/* =========================================================
   HEADER
   ========================================================= */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  flex-shrink: 0;
}

.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--color-primary);
  color: var(--color-accent);
  font-size: 1.3rem;
  font-weight: 800;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-name {
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  font-weight: 800;
}

.logo-sub {
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--color-accent);
  font-weight: 700;
}

.nav {
  display: none;
  align-items: center;
  gap: 28px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-primary);
}

.nav a {
  position: relative;
  padding: 6px 2px;
  transition: color var(--transition);
}

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

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

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

.header-cta {
  display: none;
  flex-shrink: 0;
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  margin-left: auto;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-primary);
  margin: 0 auto;
  transition: transform var(--transition), opacity var(--transition);
}

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

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

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

.nav.open {
  display: flex;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  flex-direction: column;
  align-items: flex-start;
  background: #fff;
  padding: 16px 20px 24px;
  gap: 14px;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

/* =========================================================
   BUTTONS
   ========================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-primary-dark);
}

.btn-primary:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

/* =========================================================
   HERO
   ========================================================= */

.hero {
  background: linear-gradient(180deg, #f5f7fa 0%, #ffffff 100%);
  padding: 56px 0 64px;
  overflow: hidden;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.badge {
  display: inline-block;
  background: rgba(201, 160, 50, 0.12);
  color: var(--color-accent);
  border: 1px solid rgba(201, 160, 50, 0.35);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero-text h1 {
  font-size: 2.1rem;
  line-height: 1.25;
  color: var(--color-primary);
  font-weight: 800;
  margin-bottom: 20px;
}

.rotating-word-wrap {
  display: inline-block;
  position: relative;
  vertical-align: bottom;
  overflow: hidden;
}

.rotating-word {
  display: inline-block;
  color: var(--color-accent);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.rotating-word.fade-out {
  opacity: 0;
  transform: translateY(8px);
}

.hero-subtitle {
  color: var(--color-text-muted);
  font-size: 1rem;
  max-width: 560px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-visual {
  position: relative;
}

.collage {
  position: relative;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 16px;
  max-width: 460px;
  margin: 0 auto;
}

.collage-img {
  border-radius: var(--radius);
  object-fit: cover;
  width: 100%;
  height: 100%;
  box-shadow: var(--shadow-sm);
}

.collage-1 {
  grid-row: 1 / 3;
  aspect-ratio: 13/16;
}

.collage-2 {
  aspect-ratio: 1/1;
}

.collage-3 {
  aspect-ratio: 360/280;
}

.collage-card {
  position: absolute;
  bottom: -18px;
  left: -18px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-md);
  max-width: 200px;
}

.collage-card-number {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-accent);
}

.collage-card-label {
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.3;
}

/* =========================================================
   VALUES STRIP
   ========================================================= */

.values {
  background: var(--color-primary);
  padding: 40px 0;
}

.values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.value-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  color: #e8edf4;
}

.value-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(201, 160, 50, 0.15);
  color: var(--color-accent);
}

.value-icon svg {
  width: 22px;
  height: 22px;
}

.value-item h3 {
  font-size: 1rem;
  margin-bottom: 4px;
  color: #fff;
}

.value-item p {
  font-size: 0.88rem;
  color: #b9c4d4;
}

/* =========================================================
   SECTION HEADINGS
   ========================================================= */

.section-heading {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 44px;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.section-heading h2 {
  font-size: 1.7rem;
  color: var(--color-primary);
  font-weight: 800;
  margin-bottom: 10px;
}

.section-heading p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.section-heading.light h2 {
  color: #fff;
}

.section-heading.light p {
  color: #c6cedb;
}

/* =========================================================
   ABOUT / ZIGZAG
   ========================================================= */

.about {
  padding: 72px 0;
}

.about-row {
  display: flex;
  flex-direction: column;
  gap: 32px;
  align-items: center;
  margin-bottom: 64px;
}

.about-row:last-child {
  margin-bottom: 0;
}

.about-image img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  width: 100%;
}

.about-text h2 {
  font-size: 1.5rem;
  color: var(--color-primary);
  font-weight: 800;
  margin: 6px 0 14px;
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.check-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  font-size: 0.92rem;
  color: var(--color-text);
  font-weight: 600;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(201, 160, 50, 0.15);
  border: 1px solid var(--color-accent);
}

.check-list li::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  width: 8px;
  height: 4px;
  border-left: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  transform: rotate(-45deg);
}

/* =========================================================
   CATEGORIES
   ========================================================= */

.categories {
  background: var(--color-bg-alt);
  padding: 72px 0;
}

.categories-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.category-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.category-card img {
  aspect-ratio: 400/280;
  object-fit: cover;
}

.category-body {
  padding: 20px;
}

.category-body h3 {
  font-size: 1.05rem;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.category-body p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 14px;
}

.card-link {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--color-accent);
  transition: color var(--transition);
}

.card-link:hover {
  color: var(--color-primary);
}

/* =========================================================
   WHY VEXON
   ========================================================= */

.why {
  background: var(--color-primary);
  padding: 72px 0;
}

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

.why-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: transform var(--transition), background var(--transition);
}

.why-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.07);
}

.why-number {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.why-card h3 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.why-card p {
  color: #c6cedb;
  font-size: 0.9rem;
}

/* =========================================================
   PRINCIPLES CAROUSEL
   ========================================================= */

.principles {
  padding: 72px 0;
}

.carousel {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
}

.carousel-track {
  position: relative;
  min-height: 200px;
}

.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateX(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 8px;
  pointer-events: none;
}

.carousel-slide.active {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
  position: relative;
}

.carousel-slide blockquote {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text);
  font-style: italic;
  margin-bottom: 16px;
}

.carousel-author {
  display: inline-block;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--color-accent);
}

.carousel-arrow {
  display: none;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: #fff;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-primary);
  transition: background var(--transition), color var(--transition);
  box-shadow: var(--shadow-sm);
}

.carousel-arrow:hover {
  background: var(--color-primary);
  color: #fff;
}

.carousel-arrow svg {
  width: 18px;
  height: 18px;
}

.carousel-prev {
  left: -56px;
}

.carousel-next {
  right: -56px;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.carousel-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-border);
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  padding: 0;
}

.carousel-dot.active {
  background: var(--color-accent);
  transform: scale(1.2);
}

/* =========================================================
   CTA / CONTACT
   ========================================================= */

.cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding: 72px 0;
}

.cta-inner {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.cta-inner h2 {
  color: #fff;
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.cta-inner p {
  color: #c6cedb;
  margin-bottom: 28px;
  font-size: 0.95rem;
}

.cta-inner .hero-actions {
  justify-content: center;
}

.cta-inner .btn-outline {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

.cta-inner .btn-outline:hover {
  background: #fff;
  color: var(--color-primary);
}

/* =========================================================
   FOOTER
   ========================================================= */

.footer {
  background: var(--color-primary-dark);
  color: #b9c4d4;
  padding: 56px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding-bottom: 48px;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 0.88rem;
  line-height: 1.7;
}

.logo-footer .logo-name {
  color: #fff;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.9rem;
}

.footer-col a {
  transition: color var(--transition);
}

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

.footer-newsletter p {
  color: #8fa0b8;
  font-size: 0.85rem;
  margin-bottom: 4px;
}

.newsletter-form {
  display: flex;
  gap: 8px;
  margin: 6px 0 12px;
  flex-wrap: wrap;
}

.newsletter-form input {
  flex: 1;
  min-width: 140px;
  padding: 11px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  font-size: 0.85rem;
}

.newsletter-form input::placeholder {
  color: #7e8fa6;
}

.newsletter-form .btn {
  padding: 11px 20px;
  font-size: 0.85rem;
}

.social-icons {
  display: flex;
  gap: 12px;
}

.social-icons a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), border-color var(--transition);
}

.social-icons a svg {
  width: 16px;
  height: 16px;
}

.social-icons a:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-primary-dark);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 18px 0;
  text-align: center;
  font-size: 0.78rem;
  color: #7e8fa6;
}

/* =========================================================
   WHATSAPP FLOATING BUTTON
   ========================================================= */

.whatsapp-float {
  position: fixed;
  bottom: 22px;
  right: 22px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  z-index: 90;
  transition: transform var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.08);
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
}

/* =========================================================
   FADE-IN ON SCROLL
   ========================================================= */

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* =========================================================
   RESPONSIVE — TABLET (>= 640px)
   ========================================================= */

@media (min-width: 640px) {
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .hero-text h1 {
    font-size: 2.6rem;
  }
}

/* =========================================================
   RESPONSIVE — DESKTOP (>= 980px)
   ========================================================= */

@media (min-width: 980px) {
  .nav {
    display: flex;
  }

  .header-cta {
    display: inline-flex;
  }

  .menu-toggle {
    display: none;
  }

  .hero-inner {
    flex-direction: row;
    align-items: center;
  }

  .hero-text {
    flex: 1;
  }

  .hero-visual {
    flex: 1;
  }

  .hero-text h1 {
    font-size: 3rem;
  }

  .values-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .about-row {
    flex-direction: row;
  }

  .about-row > * {
    flex: 1;
  }

  .about-row-reverse {
    flex-direction: row-reverse;
  }

  .categories-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .why-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .carousel-arrow {
    display: flex;
  }

  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
  }
}