/* ========================================
   ZRK LOGISTICS — Redesigned Layout
   Inspired by Manuport Logistics patterns:
   - Generous whitespace (120px+ section margins)
   - Light body (#f6faff) with dark accent sections
   - Alternating white ↔ dark backgrounds
   - Large display typography with strong hierarchy
   - 40px horizontal padding, max-width containment
   - Clean separators, rounded image containers
   ========================================

   FONTS:
   - Hero / Display: Oswald (matches ZRK logo "LOGISTICS SOLUTIONS INC.")
     → Replace with Neilvard Three Regular when font file is available
        by uncommenting the @font-face below and changing --font-hero
   - Body / Paragraphs: Questrial (clean geometric complement)
   - Brand fallback: Poppins (existing brand font)

   COLORS: Retained from original brand
   - --zrk-red: #ff0000
   - --zrk-orange: #ffe599
   ======================================== */

@font-face {
  font-family: "Neilvard Three";
  src: url("../../fonts/NeilvardThree-Regular.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

/* ── CSS Variables ── */
:root {
  --zrk-font: "Poppins", sans-serif;
  --zrk-red: #ff0000;
  --zrk-orange: #ffe599;
  --animation-timing: 400ms ease-in-out;

  /* Extended palette */
  --font-hero: "Neilvard Three", "Oswald", sans-serif;
  --font-body: "Questrial", sans-serif;
  --color-body-bg: #f6faff;
  --color-dark: #0d0d0d;
  --color-dark-section: #111111;
  --color-charcoal: #151515;
  --color-white: #ffffff;
  --color-text-light: rgba(255, 255, 255, 0.85);
  --color-text-muted: rgba(255, 255, 255, 0.6);
  --color-text-dark: #1a1a2e;
  --color-grey-body: #444;
  --section-padding-x: clamp(20px, 4vw, 40px);
  --section-spacing: clamp(60px, 10vw, 120px);
  --max-content: 60vw;
  --radius: 16px;

  /* Hamburger menu */
  --bar-width: 28px;
  --bar-height: 3px;
  --hamburger-gap: 5px;
  --hamburger-height: calc(var(--bar-height) * 3 + var(--hamburger-gap) * 2);
  --hamburger-margin: 16px;
  --foreground: white;
  --background: var(--color-charcoal);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  width: 100%;
  line-height: 1.7;
  background-color: var(--color-body-bg);
  color: var(--color-text-dark);
  -webkit-font-smoothing: antialiased;
}

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

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

/* ══════════════════════════════════════════
   HEADER / NAVBAR
   ══════════════════════════════════════════ */
.responsive-header {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  width: 100%;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 20;
  background-color: var(--color-charcoal);
  transition:
    background-color 0.3s ease,
    box-shadow 0.3s ease;
}

.responsive-header.sticking {
  background-color: rgba(21, 21, 21, 0.97);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

header {
  text-decoration: none;
  margin: 0;
  padding: 0;
  width: 100%;
  height: 64px;
}

header * {
  list-style: none;
}

.inner-header {
  width: 90%;
  max-width: var(--max-content);
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0 auto;
}

.logo-container {
  height: 100%;
  display: flex;
}

.logo-container * {
  align-items: center;
}

.logo-container img {
  width: 44px;
  height: auto;
}

.logo-container a {
  align-self: center;
  text-decoration: none;
}

.logo-container p {
  height: 100%;
  color: white;
  display: flex;
}

/* Navigation links */
.navigation {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 0;
}

.navigation a {
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 20px;
  text-decoration: none;
  color: white;
  font-family: var(--font-body);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  position: relative;
  transition: color 0.3s ease;
}

.navigation a::after {
  content: "";
  position: absolute;
  bottom: 16px;
  left: 20px;
  right: 20px;
  height: 2px;
  background: var(--zrk-red);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.navigation a:hover::after {
  transform: scaleX(1);
}

.navigation a:last-child {
  padding-right: 0;
}

.navigation a:last-child::after {
  display: none;
}

.navigation a li {
  display: flex;
  align-items: center;
}

.navigation button {
  height: 38px;
  padding: 0 24px;
  font-size: 0.9rem;
  font-family: var(--font-body);
  font-weight: 500;
  border: none;
  border-radius: 100px;
  background-color: var(--zrk-red);
  color: white;
  text-transform: capitalize;
  cursor: pointer;
  transition: all 0.3s ease;
}

.navigation button:hover {
  background-color: transparent;
  border: 1.5px solid var(--zrk-red);
  box-shadow: 0 0 20px rgba(255, 0, 0, 0.2);
}

/* Call button */
#call-button button {
  background-color: var(--zrk-red);
  border: none;
}

#call-button button:hover {
  border: 1px solid var(--zrk-red);
  background-color: transparent;
}

.responsive-header > .mobile-call-button {
  align-items: center;
}

.mobile-call-button {
  display: none;
  top: var(--hamburger-margin);
  left: 50%;
  z-index: 2;
}

.mobile-call-button button {
  height: 38px;
  width: 100px;
  font-size: 0.9rem;
  font-family: var(--font-body);
  border: 1px solid var(--zrk-red);
  border-radius: 100px;
  background-color: var(--zrk-red);
  color: white;
  text-transform: capitalize;
  cursor: pointer;
}

/* Hamburger */
.hamburger-menu {
  --x-width: calc(var(--hamburger-height) * 1.41421356237);
  display: none;
  flex-direction: column;
  gap: var(--hamburger-gap);
  width: max-content;
  top: var(--hamburger-margin);
  left: var(--hamburger-margin);
  z-index: 45;
  cursor: pointer;
}

.hamburger-menu:has(input:checked) {
  --foreground: white;
  --background: var(--color-charcoal);
}

.hamburger-menu:has(input:focus-visible)::before,
.hamburger-menu:has(input:focus-visible)::after,
.hamburger-menu input:focus-visible {
  border: 1px solid var(--background);
  box-shadow: 0 0 0 1px var(--foreground);
}

.hamburger-menu::before,
.hamburger-menu::after,
.hamburger-menu input {
  padding: 0;
  margin: 0;
  content: "";
  width: var(--bar-width);
  height: var(--bar-height);
  background-color: var(--foreground);
  border-radius: 9999px;
  transform-origin: left center;
  transition:
    opacity var(--animation-timing),
    width var(--animation-timing),
    rotate var(--animation-timing),
    translate var(--animation-timing),
    background-color var(--animation-timing);
}

.hamburger-menu input {
  appearance: none;
  padding: 0;
  margin: 0;
  outline: none;
  pointer-events: none;
}

.hamburger-menu:has(input:checked)::before {
  rotate: 45deg;
  width: var(--x-width);
  translate: 0 calc(var(--bar-height) / -2);
}

.hamburger-menu:has(input:checked)::after {
  rotate: -45deg;
  width: var(--x-width);
  translate: 0 calc(var(--bar-height) / 2);
  z-index: 10;
}

.hamburger-menu input:checked {
  opacity: 0;
  width: 0;
  color: #050505;
}

/* Sidebar */
.sidebar {
  display: none;
  transition: translate var(--animation-timing);
  translate: 0px -100%;
  padding-top: calc(var(--hamburger-height) + var(--hamburger-margin) + 1rem);
  background-color: var(--color-charcoal);
  color: white;
  min-width: 12rem;
  min-height: 30vh;
  position: absolute;
  left: 0;
  top: 0;
  margin-left: 0;
  z-index: 35;
}

.sidebar nav {
  padding: 0rem 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  font-family: var(--font-body);
  font-size: 1.1rem;
  width: 100%;
}

.sidebar a {
  text-decoration: none;
  color: white;
  font-family: var(--font-body);
  letter-spacing: 0.02em;
  padding: 0.5rem 0;
  transition: color 0.3s ease;
}

.sidebar a:hover {
  color: var(--zrk-red);
  background-color: transparent;
  padding: 0.5rem 0;
}

.sidebar button {
  height: 38px;
  padding: 0 24px;
  font-size: 0.9rem;
  font-family: var(--font-body);
  font-weight: 500;
  border: none;
  border-radius: 100px;
  background-color: var(--zrk-red);
  color: white;
  text-transform: capitalize;
  cursor: pointer;
  transition: all 0.3s ease;
}

.sidebar button:hover {
  background-color: transparent;
  border: 1.5px solid var(--zrk-red);
  box-shadow: 0 0 20px rgba(255, 0, 0, 0.2);
}

.sidebar button a {
  color: white;
  text-decoration: none;
}

.hamburger-menu:has(input:checked) + .sidebar {
  translate: 0;
}

/* ══════════════════════════════════════════
   MAIN CONTAINER
   ══════════════════════════════════════════ */
.container {
  width: 100%;
  overflow-x: hidden;
}

/* ══════════════════════════════════════════
   HERO SECTION
   Manuport-inspired: Full viewport, massive type,
   image background with overlay, generous padding
   ══════════════════════════════════════════ */
.hero {
  background-image: url("../images/smiling_woman-transformed2.jpg");
  background-size: cover;
  background-position: center;
  display: flex;
  width: 100%;
  min-height: 100dvh;
  justify-content: flex-start;
  align-items: center;
  color: white;
  position: relative;
}

/* Dark gradient overlay for text readability (Manuport pattern) */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 10, 10, 0.75) 0%,
    rgba(10, 10, 10, 0.4) 50%,
    rgba(10, 10, 10, 0.2) 100%
  );
  z-index: 1;
}

#hero-text {
  position: relative;
  z-index: 2;
  padding-left: 20%;
  /* padding-right: 8%;  */
  width: 60%;
}

#hero-text h1 {
  font-family: var(--font-hero);
  font-size: clamp(2rem, 6.5vw, 5rem);
  line-height: 1;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin-top: 3rem;
  margin-bottom: 1rem;
}

#hero-text h3 {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-weight: 300;
  opacity: 0.8;
  letter-spacing: 0.02em;
}

/* ══════════════════════════════════════════
   ABOUT US — "Our Story"
   White text on dark background, generous spacing
   (Manuport: dark blue section with 160px padding)
   ══════════════════════════════════════════ */
#about-us {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-dark);
  color: white;
  width: 100%;
  padding: clamp(3rem, 8vw, 6rem) var(--section-padding-x);
}

#story-text {
  width: 100%;
  max-width: var(--max-content);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 4rem;
}

#story-text h2 {
  font-family: var(--font-hero);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  min-width: 180px;
  flex-shrink: 0;
  line-height: 1.1;
  position: relative;
  padding-bottom: 1rem;
}

#story-text h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background: var(--zrk-red);
}

#story-text div {
  flex: 1;
}

#story-text p {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-light);
}

/* ══════════════════════════════════════════
   OUR MISSION
   Full-width image background with overlay
   (Manuport: cinematic full-bleed sections)
   ══════════════════════════════════════════ */
#our-mission {
  width: 100%;
  min-height: 50vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-image: url(../images/our-mission-backgrd1.jpg);
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: white;
  padding: clamp(3rem, 8vw, 6rem) var(--section-padding-x);
  position: relative;
}

#our-mission::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.6);
}

#mission-text {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: var(--max-content);
}

#our-mission h2 {
  font-family: var(--font-hero);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 1.5rem;
}

#our-mission p {
  width: 100%;
  max-width: var(--max-content);
  text-align: center;
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  font-weight: 300;
  line-height: 1.8;
  color: var(--color-text-light);
}

/* ══════════════════════════════════════════
   SERVICES
   Dark section with centered content
   (Manuport: clean dark sections, pill buttons)
   ══════════════════════════════════════════ */
#services {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  background-color: var(--color-dark-section);
  color: white;
  padding: clamp(3rem, 8vw, 5rem) var(--section-padding-x);
  padding-bottom: clamp(3rem, 8vw, 5rem);
}

#services h2 {
  width: 100%;
  max-width: var(--max-content);
  text-align: center;
  font-family: var(--font-hero);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.5rem;
}

#services hr {
  width: 60px;
  height: 3px;
  background: var(--zrk-red);
  border: none;
  margin-bottom: 2rem;
}

#services p {
  width: 100%;
  max-width: var(--max-content);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-light);
  text-align: center;
  margin-bottom: 0.5rem;
}

#services span {
  font-weight: 600;
}

.service-list {
  display: flex;
  width: 100%;
  max-width: var(--max-content);
  justify-content: center;
  gap: clamp(1.5rem, 4vw, 3rem);
  margin-top: 2.5rem;
}

#business {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  max-width: 350px;
}

#business img {
  border-radius: var(--radius);
  object-fit: contain;
  width: 100%;
  height: auto;
  transition: transform 0.5s ease;
}

#business:hover img {
  transform: scale(1.03);
}

#business h3 {
  font-family: var(--font-hero);
  font-size: 1.2rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 1rem;
}

#services > a {
  display: inline-block;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

#services button {
  background-color: var(--zrk-red);
  color: white;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.75rem 2rem;
  border: 1.5px solid var(--zrk-red);
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.3s ease;
}

#services button:hover {
  background: transparent;
  box-shadow: 0 0 20px rgba(255, 0, 0, 0.2);
}

/* ══════════════════════════════════════════
   ASSURANCE — Van image + overlaid text
   (Manuport: asymmetric image/text compositions)
   ══════════════════════════════════════════ */
.assurance {
  position: relative;
  background: var(--color-body-bg);
}

.assurance img {
  width: 100%;
  height: 28rem;
  object-fit: cover;
  object-position: center center;
  border-radius: 0;
}

#assurance-text {
  position: absolute;
  bottom: 3rem;
  left: 20%;
  width: 40%;
  max-width: var(--max-content);
  color: white;
  font-family: var(--font-body);
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.6));
  padding: 2rem 2.5rem;
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
}

#assurance-text h3 {
  font-family: var(--font-hero);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 0.75rem;
}

#assurance-text p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-light);
}

/* ══════════════════════════════════════════
   SOLUTIONS
   Light background section with generous whitespace
   (Manuport: white bg, dark text, big spacing)
   ══════════════════════════════════════════ */
.solutions-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--color-white);
  padding: var(--section-spacing) var(--section-padding-x);
}

.our-solutions {
  max-width: var(--max-content);
  width: 100%;
}

.our-solutions h2 {
  font-family: var(--font-hero);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 1rem;
  color: var(--color-text-dark);
}

.our-solutions hr {
  width: 60px;
  height: 3px;
  background: var(--zrk-red);
  border: none;
  margin-bottom: 2rem;
}

.options {
  display: flex;
  justify-content: space-between;
  gap: 3rem;
}

#solution {
  width: 48%;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

#solution h3 {
  font-family: var(--font-hero);
  font-size: 1.3rem;
  text-transform: uppercase;
  font-weight: 400;
  letter-spacing: 0.03em;
  margin-bottom: 0.75rem;
  color: var(--color-text-dark);
}

#solution p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-grey-body);
}

#solution span {
  color: var(--zrk-red);
  font-weight: bold;
}

/* ══════════════════════════════════════════
   METRICS
   Light background with bold red numbers
   (Manuport: large stats with generous spacing)
   ══════════════════════════════════════════ */
.metrics-container {
  width: 100%;
  display: flex;
  justify-content: center;
  background: var(--color-body-bg);
  padding: var(--section-spacing) var(--section-padding-x);
}

.metrics {
  width: 100%;
  max-width: var(--max-content);
  display: flex;
  justify-content: space-around;
  align-items: center;
}

#metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
}

#metric + #metric::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 60px;
  background: rgba(0, 0, 0, 0.1);
}

.metrics h2 {
  font-family: var(--font-hero);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 600;
  color: var(--zrk-red);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.metrics p {
  font-family: var(--font-body);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-grey-body);
  margin-top: 0;
}

/* ══════════════════════════════════════════
   ZRK ADVANTAGE
   Dark image background with overlaid content
   (Manuport: bold imagery with text overlay)
   ══════════════════════════════════════════ */
#advantage-container {
  width: 100%;
  min-height: 55dvh;
  background-image: url(../images/ZRK-Advantage2.webp);
  background-size: cover;
  background-position: center;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  position: relative;
  padding: clamp(2rem, 5vw, 4rem) var(--section-padding-x);
}

#advantage-container::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(0, 0, 0, 0.1) 0%,
    rgba(0, 0, 0, 0.7) 60%,
    rgba(0, 0, 0, 0.85) 100%
  );
}

.zrk-advantage {
  position: relative;
  z-index: 2;
  width: 40%;
  max-width: var(--max-content);
  display: flex;
  flex-direction: column;
  color: white;
  margin-right: 8%;
}

#zrk-capital {
  text-transform: uppercase;
}

.zrk-advantage h3 {
  font-family: var(--font-hero);
  color: var(--zrk-orange);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
  line-height: 1.15;
}

.zrk-advantage ul {
  list-style: none;
  padding: 0;
}

.zrk-advantage li {
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-light);
}

.zrk-advantage span {
  color: var(--zrk-orange);
  font-weight: 500;
}

/* ══════════════════════════════════════════
   CONTACT
   Dark background with two-column layout
   (Manuport: generous 120px margins, split layouts)
   ══════════════════════════════════════════ */
#contact {
  width: 100%;
  background: var(--color-dark);
  color: white;
  display: flex;
  justify-content: center;
  padding: clamp(3rem, 8vw, 6rem) var(--section-padding-x);
}

.contact-elements {
  display: flex;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-content);
  gap: 4rem;
}

.contact-us {
  width: 40%;
}

.contact-us h2 {
  font-family: var(--font-hero);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 1rem;
}

.contact-us h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background: var(--zrk-red);
}

.contact-us p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}

/* Contact Form */
.contact-form {
  flex: 1;
  max-width: var(--max-content);
}

.contact-form form {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.contact-form label {
  font-family: var(--font-body);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-top: 0.75rem;
}

form input[type="text"],
input[type="email"] {
  width: 100%;
  height: 2.75rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: white;
  padding: 0 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.3s ease;
}

form input[type="text"]:focus,
form input[type="email"]:focus,
form input[type="textarea"]:focus {
  outline: none;
  border-color: var(--zrk-red);
}

form input[type="textarea"] {
  height: 8rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: white;
  padding: 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
}

form button {
  width: auto;
  align-self: flex-start;
  padding: 0.75rem 2rem;
  background-color: var(--zrk-red);
  color: white;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  border: 1.5px solid var(--zrk-red);
  border-radius: 100px;
  margin-top: 1.25rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

form button:hover {
  background-color: transparent;
  box-shadow: 0 0 20px rgba(255, 0, 0, 0.2);
}

/* ══════════════════════════════════════════
   FOOTER
   (Retained from original with refinements)
   ══════════════════════════════════════════ */
footer {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
}

.footer-content {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 60px 20px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.footer-section {
  min-height: 200px;
}

.footer-section h3 {
  font-family: var(--font-hero);
  font-size: 1.15rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
  color: #ffffff;
  position: relative;
  padding-bottom: 10px;
}

.footer-section h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--zrk-red);
  border-radius: 1px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.footer-logo img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  padding: 6px;
}

.footer-logo h3 {
  margin: 0;
  font-family: var(--font-hero);
  font-size: 1.4rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-logo h3::after {
  display: none;
}

.footer-section p {
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.6;
  margin-bottom: 12px;
  font-size: 0.9rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 10px;
}

.footer-section ul li a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  display: inline-block;
  font-size: 0.9rem;
}

.footer-section ul li a:hover {
  color: var(--zrk-red);
  transform: translateX(4px);
}

.social-links {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.social-links a {
  width: 38px;
  height: 38px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.85rem;
  transition: all 0.3s ease;
}

.social-links a:hover {
  background: var(--zrk-red);
  border-color: var(--zrk-red);
  color: #ffffff;
  transform: translateY(-2px);
}

.footer-bottom {
  background: rgba(0, 0, 0, 0.3);
  padding: 18px 20px;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
  max-width: var(--max-content);
  margin: 0 auto;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-bottom a:hover {
  color: var(--zrk-red);
}

/* ══════════════════════════════════════════
   RESPONSIVE — Mobile First Breakpoints
   ══════════════════════════════════════════ */

/* Tablets and below: 1279px and under */
@media screen and (max-width: 1279px) {
  .navigation {
    display: none;
  }
  .hamburger-menu {
    display: flex;
    align-items: center;
  }
  .mobile-call-button {
    display: flex;
  }
  .sidebar {
    right: 0;
    left: auto;
    display: flex;
  }

  :root {
    --max-content: 85vw;
  }

  #hero-text {
    width: 85vw;
  }

  #story-text {
    flex-direction: column;
    gap: 1.5rem;
  }

  #story-text h2 {
    min-width: unset;
    width: 100%;
  }

  .service-list {
    flex-direction: column;
    align-items: center;
  }

  #business {
    max-width: 400px;
    width: 100%;
  }

  #business img {
    height: 200px;
  }

  .options {
    flex-direction: column;
    gap: 0;
  }

  #solution {
    width: 100%;
  }

  #assurance-text {
    position: relative;
    bottom: auto;
    left: auto;
    width: 100%;
    max-width: none;
    margin: 0;
    border-radius: 0;
    background: var(--color-dark);
    padding: 2rem var(--section-padding-x);
  }

  .assurance img {
    height: 20rem;
  }

  .zrk-advantage {
    width: 70%;
    margin-right: 0;
  }

  .contact-elements {
    flex-direction: column;
    gap: 2.5rem;
  }

  .contact-us {
    width: 100%;
  }

  .contact-form {
    max-width: 100%;
  }

  .footer-content {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }

  .metrics {
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
  }

  #metric + #metric::before {
    display: none;
  }
}

/* Large Phones: 480px - 767px */
@media screen and (max-width: 767px) {
  :root {
    --max-content: 90vw;
  }

  #hero-text {
    width: 90vw;
  }

  #hero-text h1 {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .hero {
    min-height: 75dvh;
  }

  #advantage-container {
    justify-content: center;
    min-height: auto;
    padding: 3rem var(--section-padding-x);
  }

  #advantage-container::before {
    background: rgba(0, 0, 0, 0.75);
  }

  .zrk-advantage {
    width: 100%;
    max-width: 100%;
    margin-right: 0;
    text-align: left;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .footer-section {
    min-height: auto;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .footer-section:last-child {
    border-bottom: none;
  }
}

/* Small Phones: under 480px */
@media screen and (max-width: 479px) {
  :root {
    --max-content: 90vw;
  }

  #hero-text {
    width: 90vw;
  }

  header {
    height: 54px;
  }

  #hero-text {
    padding-left: 5%;
    padding-right: 5%;
  }

  #hero-text h1 {
    font-size: clamp(1.6rem, 7vw, 2.5rem);
    line-height: 1.05;
  }

  #hero-text h3 {
    font-size: 0.95rem;
  }

  .hero {
    min-height: 65dvh;
  }

  .assurance img {
    height: 14rem;
  }

  .metrics {
    flex-direction: column;
    gap: 2rem;
  }

  .metrics h2 {
    font-size: 2.5rem;
  }

  .zrk-advantage h3 {
    font-size: 1.6rem;
  }

  .zrk-advantage li {
    font-size: 0.9rem;
  }

  .contact-us h2 {
    font-size: 1.8rem;
  }

  .footer-logo {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }

  .social-links {
    justify-content: center;
  }

  .footer-bottom p {
    font-size: 0.75rem;
  }
}

/* Ultra-wide */
@media screen and (min-width: 1921px) {
  .footer-content {
    max-width: var(--max-content);
  }
}

/* Touch devices */
@media (hover: none) and (pointer: coarse) {
  .footer-section ul li a:hover {
    transform: none;
  }
  .social-links a:hover {
    transform: none;
  }
  .navigation a::after {
    display: none;
  }
}

/* Print */
@media print {
  footer {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .footer-section h3,
  .footer-section p,
  .footer-section ul li a {
    color: #000000 !important;
  }
  .social-links {
    display: none;
  }
}