/* ============================================================
   CRYOZEN KLÍMA – Main Stylesheet
   Palette: #ffffff | #f5f5f5 | #e8e8e8 | #6b6b6b | #2a7a4b | #1f5c38
   ============================================================ */

/* RESET & BASE */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family:
    "Segoe UI",
    system-ui,
    -apple-system,
    sans-serif;
  color: #1a1a1a;
  background: #ffffff;
  line-height: 1.6;
  overflow-x: hidden;
}
a {
  text-decoration: none;
  color: inherit;
}
img {
  max-width: 100%;
  display: block;
}

/* CUSTOM PROPS */
:root {
  --green: #2a7a4b;
  --green-dark: #1f5c38;
  --green-light: #e8f5ee;
  --gray-100: #f7f7f7;
  --gray-200: #eeeeee;
  --gray-300: #d8d8d8;
  --gray-500: #8a8a8a;
  --gray-700: #4a4a4a;
  --text: #1a1a1a;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
  --transition: 0.25s ease;
}

/* CONTAINER */
.container {
  width: min(1160px, 92vw);
  margin-inline: auto;
}

/* SECTION SPACING */
.section {
  padding: 96px 0;
}

/* SECTION HEADER */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  background: var(--green-light);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 14px;
}
.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}
.section-desc {
  margin-top: 14px;
  color: var(--gray-500);
  font-size: 1.05rem;
}

/* BUTTONS */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--green);
  color: #fff;
  padding: 13px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid var(--green);
  cursor: pointer;
  transition:
    background var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
}
.btn-primary:hover {
  background: var(--green-dark);
  border-color: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(42, 122, 75, 0.3);
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text);
  padding: 13px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid var(--gray-300);
  cursor: pointer;
  transition:
    border-color var(--transition),
    color var(--transition),
    transform var(--transition);
}
.btn-ghost:hover {
  border-color: var(--green);
  color: var(--green);
  transform: translateY(-2px);
}
.btn-full {
  width: 100%;
  justify-content: center;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
}
.navbar.scrolled {
  border-bottom-color: var(--gray-200);
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
}
.logo-cryo {
  color: var(--green);
}
.logo-zen {
  color: var(--green-dark);
}
.logo-sub {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--gray-500);
  text-transform: uppercase;
  margin-left: 6px;
  align-self: center;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 0.9rem;
  font-weight: 500;
}
.nav-links a {
  color: var(--gray-700);
  transition: color var(--transition);
}
.nav-links a:hover {
  color: var(--green);
}
.btn-nav {
  background: var(--green);
  color: #fff !important;
  padding: 9px 22px;
  border-radius: var(--radius);
  font-weight: 600 !important;
  transition:
    background var(--transition),
    box-shadow var(--transition) !important;
}
.btn-nav:hover {
  background: var(--green-dark) !important;
  box-shadow: 0 4px 16px rgba(42, 122, 75, 0.3);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition:
    transform 0.3s,
    opacity 0.3s;
}
.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.mobile-menu {
  display: none;
  flex-direction: column;
  background: #fff;
  border-top: 1px solid var(--gray-200);
  padding: 16px 0;
}
.mobile-menu.open {
  display: flex;
}
.mobile-link {
  padding: 13px 24px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--gray-700);
  border-bottom: 1px solid var(--gray-100);
  transition:
    color var(--transition),
    background var(--transition);
}
.mobile-link:hover {
  color: var(--green);
  background: var(--gray-100);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  padding: 148px 0 96px;
  overflow: hidden;
  background: linear-gradient(155deg, #fff 60%, var(--green-light) 100%);
}
.hero-bg-shape {
  position: absolute;
  top: -120px;
  right: -160px;
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(42, 122, 75, 0.08) 0%,
    transparent 70%
  );
  border-radius: 50%;
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  background: var(--green-light);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}
.hero-text h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 20px;
}
.accent {
  color: var(--green);
}
.hero-desc {
  color: var(--gray-500);
  font-size: 1.1rem;
  margin-bottom: 36px;
  line-height: 1.7;
}
.br-desktop {
  display: block;
}
.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.hero-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 18px 22px;
  box-shadow: var(--shadow-sm);
  transition:
    box-shadow var(--transition),
    transform var(--transition);
}
.hero-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}
.hc-icon {
  font-size: 2rem;
}
.hc-text {
  display: flex;
  flex-direction: column;
}
.hc-text strong {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}
.hc-text span {
  font-size: 0.85rem;
  color: var(--gray-500);
}

/* ============================================================
   USP BAR
   ============================================================ */
.usp-bar {
  background: var(--green);
  padding: 32px 0;
}
.usp-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  gap: 0;
}
.usp-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 36px;
  white-space: nowrap;
}
.usp-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}
.usp-text {
  display: flex;
  flex-direction: column;
}
.usp-text strong {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
}
.usp-text span {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.75);
  margin-top: 2px;
}
.usp-divider {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.25);
  flex-shrink: 0;
}

/* ============================================================
   SERVICES
   ============================================================ */
.services {
  background: var(--gray-100);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition:
    box-shadow var(--transition),
    transform var(--transition);
}
.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.service-card--featured {
  border-color: var(--green);
  background: linear-gradient(160deg, #fff 70%, var(--green-light));
}
.service-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--green);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 100px;
}
.service-icon {
  width: 52px;
  height: 52px;
  color: var(--green);
  margin-bottom: 20px;
}
.service-icon svg {
  width: 100%;
  height: 100%;
}
.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}
.service-card p {
  color: var(--gray-500);
  font-size: 0.95rem;
  margin-bottom: 20px;
}
.service-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.service-list li {
  font-size: 0.9rem;
  color: var(--gray-700);
  padding-left: 20px;
  position: relative;
}
.service-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.howto {
  background: #fff;
}
.steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  flex-wrap: wrap;
}
.step {
  flex: 1;
  min-width: 160px;
  text-align: center;
  padding: 0 16px;
}
.step-num {
  display: inline-block;
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--green);
  opacity: 0.2;
  line-height: 1;
  margin-bottom: 12px;
}
.step h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}
.step p {
  font-size: 0.875rem;
  color: var(--gray-500);
}
.step-arrow {
  font-size: 1.5rem;
  color: var(--gray-300);
  padding-top: 36px;
  flex-shrink: 0;
}

/* ============================================================
   BRANDS
   ============================================================ */
.brands {
  background: var(--gray-100);
}
.brands-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}
.brand-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition:
    box-shadow var(--transition),
    transform var(--transition);
}
.brand-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.brand-card--accent {
  border-color: var(--green);
  background: linear-gradient(160deg, #fff 60%, var(--green-light));
}
.brand-logo {
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: var(--text);
  margin-bottom: 10px;
  font-variant: small-caps;
}
.brand-card p {
  font-size: 0.82rem;
  color: var(--gray-500);
  line-height: 1.55;
  margin-bottom: 14px;
}
.brand-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.brand-tags span {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--green);
  background: var(--green-light);
  padding: 4px 12px;
  border-radius: 100px;
}

/* ============================================================
   HEM
   ============================================================ */
.hem {
  background: #fff;
}
.hem-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 28px;
}
.hem-text h2 {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  line-height: 1.2;
}
.hem-text p:not(.section-label) {
  color: var(--gray-500);
  font-size: 0.97rem;
  line-height: 1.75;
}
.hem-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.hem-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 20px;
  transition:
    box-shadow var(--transition),
    transform var(--transition);
}
.hem-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}
.hem-card-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}
.hem-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  width: 180px;
  flex-shrink: 0;
  background: linear-gradient(90deg, var(--green), #5dba7d);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hem-card p {
  font-size: 0.85rem;
  color: var(--gray-500);
  line-height: 1.6;
}
.hem-disclaimer {
  font-size: 0.78rem;
  color: var(--gray-500);
  text-align: center;
  border-top: 1px solid var(--gray-300);
  padding-top: 20px;
}

.af-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.av-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  padding: 28px 24px;
}
.av-card--main {
  background: var(--green);
}
.av-card--top,
.av-card--bottom {
  background: #fff;
  border: 1px solid var(--gray-200);
}
.av-number {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}
.av-label {
  font-size: 0.8rem;
  margin-top: 4px;
}
.av-card--main .av-number,
.av-card--main .av-label {
  color: #fff;
}
.av-card--top .av-number,
.av-card--bottom .av-number {
  color: var(--green);
}
.av-card--top .av-label,
.av-card--bottom .av-label {
  color: var(--gray-500);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  background: var(--gray-100);
}
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
}
.contact-form {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-700);
}
.form-group input,
.form-group select,
.form-group textarea {
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius);
  padding: 11px 14px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(42, 122, 75, 0.12);
}
.form-group select {
  cursor: pointer;
}
.form-group textarea {
  resize: vertical;
  min-height: 100px;
}
.form-note {
  font-size: 0.78rem;
  color: var(--gray-500);
  text-align: center;
  margin-top: -4px;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.ci-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px 0;
  border-bottom: 1px solid var(--gray-200);
}
.ci-item:first-child {
  padding-top: 0;
}
.ci-item:last-child {
  border-bottom: none;
}
.ci-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.ci-item strong {
  display: block;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 2px;
}
.ci-item a,
.ci-item span {
  font-size: 0.95rem;
  color: var(--gray-500);
}
.ci-item a:hover {
  color: var(--green);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: #111;
  color: rgba(255, 255, 255, 0.8);
  padding: 64px 0 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .logo {
  margin-bottom: 14px;
}
.footer-brand .logo-cryo {
  color: #5dba7d;
}
.footer-brand .logo-zen {
  color: #4aab6d;
}
.footer-brand .logo-sub {
  color: rgba(255, 255, 255, 0.4);
}
.footer-brand p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.65;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links strong {
  font-size: 0.85rem;
  color: #fff;
  margin-bottom: 4px;
}
.footer-links a,
.footer-links span {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.45);
  transition: color var(--transition);
}
.footer-links a:hover {
  color: #5dba7d;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
}
.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: center;
}
.footer-bottom span {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.3);
}

/* ============================================================
   TOAST
   ============================================================ */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--green);
  color: #fff;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.3s,
    transform 0.3s;
  white-space: nowrap;
  z-index: 999;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ============================================================
   FADE-IN ANIMATIONS
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.5s ease,
    transform 0.5s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.services-grid .fade-in:nth-child(2),
.brands-grid .fade-in:nth-child(2) {
  transition-delay: 0.1s;
}
.services-grid .fade-in:nth-child(3),
.brands-grid .fade-in:nth-child(3) {
  transition-delay: 0.2s;
}
.steps .fade-in:nth-child(3) {
  transition-delay: 0.1s;
}
.steps .fade-in:nth-child(5) {
  transition-delay: 0.2s;
}
.steps .fade-in:nth-child(7) {
  transition-delay: 0.3s;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-visual {
    flex-direction: row;
  }
  .hero-card {
    flex: 1;
  }
  .about-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .about-visual {
    max-width: 360px;
    margin: 0 auto;
  }
  .av-card--main {
    width: auto;
    height: auto;
  }
  .av-number {
    font-size: 1.5rem;
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 1200px) {
  .usp-inner {
    display: grid;
    grid-template-columns: max-content max-content;
    justify-content: center;
    gap: 16px 24px;
  }
  .usp-item {
    justify-content: flex-start;
    padding: 10px 20px;
    white-space: normal;
  }
  .usp-divider {
    display: none;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }
  .nav-links {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .brands-grid {
    grid-template-columns: 1fr;
  }
  .brand-card {
    aspect-ratio: auto;
  }

  .hem-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .steps {
    flex-direction: column;
    align-items: center;
    gap: 24px;
  }
  .step-arrow {
    transform: rotate(90deg);
    padding: 0;
  }
  .usp-inner {
    grid-template-columns: max-content;
    justify-content: center;
  }
  .usp-item {
    justify-content: flex-start;
  }
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .hero-visual {
    flex-direction: column;
  }
  .hero {
    padding: 120px 0 64px;
  }
  .br-desktop {
    display: none;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 480px) {
  .hero-cta {
    flex-direction: column;
  }
  .btn-primary,
  .btn-ghost {
    width: 100%;
    justify-content: center;
  }
  .contact-form {
    padding: 24px 20px;
  }
  .about-visual {
    display: none;
  }
}