/* ═══════════════════════════════════════════════════════════
   RT REINIGUNGEN – MAIN STYLESHEET
   ═══════════════════════════════════════════════════════════ */

/* ──────────────────────────────────────
   1. CSS CUSTOM PROPERTIES
────────────────────────────────────── */
:root {
  /* Colors */
  --color-primary:       #1a6fba;
  --color-primary-dark:  #145899;
  --color-primary-light: #e8f4fd;
  --color-secondary:     #27ae60;
  --color-accent:        #f39c12;
  --color-dark:          #1a2332;
  --color-dark-mid:      #2c3e50;
  --color-text:          #3d4e5e;
  --color-text-light:    #6b7f91;
  --color-border:        #d8e6f0;
  --color-bg:            #f7fafc;
  --color-white:         #ffffff;
  --color-success:       #27ae60;
  --color-error:         #e74c3c;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --fw-regular: 400;
  --fw-medium:  500;
  --fw-semi:    600;
  --fw-bold:    700;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(26,111,186,.08), 0 1px 2px rgba(26,111,186,.04);
  --shadow-md:  0 4px 16px rgba(26,111,186,.12), 0 2px 6px rgba(26,111,186,.06);
  --shadow-lg:  0 12px 40px rgba(26,111,186,.16), 0 4px 12px rgba(26,111,186,.08);
  --shadow-xl:  0 24px 64px rgba(26,111,186,.2);

  /* Transitions */
  --transition: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* Layout */
  --container-max: 1200px;
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: hidden;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover { color: var(--color-primary-dark); }

address { font-style: normal; }

ul { list-style: none; }

/* ──────────────────────────────────────
   3. UTILITIES
────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.icon {
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

/* ──────────────────────────────────────
   4. TYPOGRAPHY HELPERS
────────────────────────────────────── */
.section__header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--space-3xl);
}

.section__badge {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: var(--fw-semi);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 1rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: var(--fw-bold);
  color: var(--color-dark);
  line-height: 1.25;
  margin-bottom: var(--space-md);
}

.section__subtitle {
  font-size: 1.05rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.section {
  padding-block: var(--space-4xl);
}

/* ──────────────────────────────────────
   5. BUTTONS
────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-size: 0.975rem;
  font-weight: var(--fw-semi);
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
  line-height: 1.4;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: 0 4px 14px rgba(26,111,186,.35);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
  box-shadow: 0 6px 20px rgba(26,111,186,.45);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.6);
}
.btn--ghost:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--color-white);
  color: var(--color-white);
}

.btn--white {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}
.btn--white:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.btn--outline-white {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.7);
}
.btn--outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--color-white);
  color: var(--color-white);
}

.btn--ghost-dark {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--ghost-dark:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.btn--full { width: 100%; justify-content: center; }

.btn--sm {
  padding: 0.55rem 1.25rem;
  font-size: 0.875rem;
}

/* ──────────────────────────────────────
   6. HEADER
────────────────────────────────────── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  background: var(--color-white);
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-xl);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  flex-shrink: 0;
}

.logo__text {
  font-size: 1.1rem;
  font-weight: var(--fw-medium);
  color: var(--color-white);
  transition: color var(--transition);
  letter-spacing: -0.01em;
}

.logo__text strong {
  font-weight: var(--fw-bold);
}

.header.scrolled .logo__text { color: var(--color-dark); }

.logo--white .logo__text { color: var(--color-white); }

.logo__icon {
  display: block;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  overflow: hidden;
  background: #1a6fba;
  flex-shrink: 0;
}

.logo__icon .logo__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0) invert(1);
  transition: filter var(--transition);
}

.header.scrolled .logo__icon {
  background: rgba(26, 111, 186, 0.12);
}

.header.scrolled .logo__icon .logo__img {
  filter: none;
}

.logo--white .logo__icon {
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.15);
}

.logo--white .logo__icon .logo__img {
  filter: brightness(0) invert(1);
}

/* Nav */
.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav__link {
  font-size: 0.925rem;
  font-weight: var(--fw-medium);
  color: rgba(255,255,255,0.85);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-white);
  background: rgba(255,255,255,0.12);
}

.header.scrolled .nav__link {
  color: var(--color-text);
}

.header.scrolled .nav__link:hover,
.header.scrolled .nav__link.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-white);
  color: var(--color-primary) !important;
  font-size: 0.875rem;
  font-weight: var(--fw-semi);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.nav__cta:hover {
  background: var(--color-primary);
  color: var(--color-white) !important;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.header.scrolled .nav__cta {
  background: var(--color-primary);
  color: var(--color-white) !important;
}

.header.scrolled .nav__cta:hover {
  background: var(--color-primary-dark);
}

/* ────── Language dropdown ────── */
.header__right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-left: auto;
  position: relative;
  z-index: 1001;
}

.lang-dropdown {
  position: relative;
}

.lang-dropdown__current {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.32);
  border-radius: var(--radius-full);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: var(--fw-bold);
  letter-spacing: 0.06em;
  padding: 0.38rem 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  line-height: 1;
}

.lang-dropdown__current:hover {
  background: rgba(255,255,255,0.28);
  border-color: rgba(255,255,255,0.5);
}

.lang-dropdown__current svg {
  transition: transform var(--transition);
  flex-shrink: 0;
}

.lang-dropdown.open .lang-dropdown__current svg {
  transform: rotate(180deg);
}

.header.scrolled .lang-dropdown__current {
  background: var(--color-primary-light);
  border-color: var(--color-border);
  color: var(--color-primary);
}

.header.scrolled .lang-dropdown__current:hover {
  background: rgba(26,111,186,0.12);
}

.lang-dropdown__menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 140px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 1100;
  list-style: none;
  padding: 4px;
  margin: 0;
}

.lang-dropdown.open .lang-dropdown__menu {
  display: block;
  animation: fadeInDown 0.15s ease;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.lang-dropdown__option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.55rem 0.9rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: var(--fw-medium);
  cursor: pointer;
  text-align: left;
  transition: all var(--transition);
  white-space: nowrap;
}

.lang-dropdown__option:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.lang-dropdown__option.active {
  color: var(--color-primary);
  font-weight: var(--fw-semi);
}

.lang-dropdown__option.active::after {
  content: '\2713';
  font-size: 0.8rem;
  opacity: 0.8;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.15);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 8px;
  transition: background var(--transition);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition);
  transform-origin: center;
}

.header.scrolled .nav-toggle { background: var(--color-primary-light); }
.header.scrolled .nav-toggle span { background: var(--color-primary); }

.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ──────────────────────────────────────
   7. HERO
────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  background: linear-gradient(135deg, #0d4a8a 0%, #1a6fba 45%, #1e8449 100%);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--header-h);
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.08;
  background: var(--color-white);
  animation: float 8s ease-in-out infinite;
}

.hero__shape--1 {
  width: 500px;
  height: 500px;
  top: -150px;
  right: -100px;
  animation-delay: 0s;
}

.hero__shape--2 {
  width: 300px;
  height: 300px;
  bottom: -80px;
  left: 10%;
  animation-delay: -3s;
}

.hero__shape--3 {
  width: 180px;
  height: 180px;
  top: 30%;
  right: 20%;
  opacity: 0.05;
  animation-delay: -6s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.02); }
}

.hero__content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--space-3xl);
  padding-block: var(--space-4xl);
  padding-bottom: calc(var(--space-4xl) + 80px); /* extra space for wave */
}

.hero__text { color: var(--color-white); min-width: 0; }

.hero__badge {
  display: inline-block;
  background: rgba(255,255,255,0.18);
  color: rgba(255,255,255,0.9);
  font-size: 0.78rem;
  font-weight: var(--fw-semi);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.25);
  margin-bottom: var(--space-lg);
}

.hero__title {
  font-size: clamp(1.65rem, 5vw, 3.5rem);
  font-weight: var(--fw-bold);
  line-height: 1.18;
  color: var(--color-white);
  margin-bottom: var(--space-lg);
  overflow-wrap: break-word;
  word-break: break-word;
  hyphens: auto;
}

.hero__title em {
  font-style: normal;
  color: #7dd3c8;
}

.hero__subtitle {
  font-size: 1.1rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.82);
  margin-bottom: var(--space-xl);
  max-width: 520px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Hero visual */
.hero__visual {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hero__illustration {
  width: 100%;
  max-width: 380px;
  filter: drop-shadow(0 24px 48px rgba(0,0,0,0.25));
  animation: float 6s ease-in-out infinite;
}

/* Hero wave */
.hero__wave {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  line-height: 0;
}

.hero__wave svg {
  width: 100%;
  height: 80px;
}

/* ──────────────────────────────────────
   8. ABOUT
────────────────────────────────────── */
.about { background: var(--color-white); }

.about__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-xl);
}

.about__feature {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: all var(--transition);
}

.about__feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.about__icon {
  width: 56px;
  height: 56px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.about__feature h3 {
  font-size: 1.1rem;
  font-weight: var(--fw-semi);
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
}

.about__feature p {
  font-size: 0.925rem;
  color: var(--color-text-light);
  line-height: 1.65;
}

/* ──────────────────────────────────────
   9. SERVICES
────────────────────────────────────── */
.services {
  position: relative;
  background: var(--color-bg);
}

.services__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--color-white) 0%, var(--color-bg) 100%);
  z-index: 0;
}

.services .container { position: relative; z-index: 1; }

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-slow);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card__body { flex: 1; }

.service-card__title {
  font-size: 1.2rem;
  font-weight: var(--fw-bold);
  color: var(--color-dark);
  margin-bottom: 0.75rem;
}

.service-card__desc {
  font-size: 0.925rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.service-card__list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.service-card__list li {
  font-size: 0.875rem;
  font-weight: var(--fw-medium);
  color: var(--color-text);
  padding-left: 1.25rem;
  position: relative;
}

.service-card__list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-secondary);
  font-weight: var(--fw-bold);
  font-size: 0.8rem;
}

/* ──────────────────────────────────────
   10. CTA BANNER
────────────────────────────────────── */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, #16a085 100%);
  padding-block: var(--space-3xl);
}

.cta-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.cta-banner__text h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: var(--fw-bold);
  color: var(--color-white);
  margin-bottom: 0.5rem;
}

.cta-banner__text p {
  color: rgba(255,255,255,0.82);
  font-size: 1rem;
}

.cta-banner__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ──────────────────────────────────────
   11. CONTACT
────────────────────────────────────── */
.contact { background: var(--color-white); }

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact__info-title {
  font-size: 1.3rem;
  font-weight: var(--fw-bold);
  color: var(--color-dark);
  margin-bottom: var(--space-xl);
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.contact__item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact__item-icon {
  width: 44px;
  height: 44px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact__item > div:last-child {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.contact__item strong {
  font-size: 0.8rem;
  font-weight: var(--fw-semi);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-light);
}

.contact__item span,
.contact__item a {
  font-size: 0.975rem;
  color: var(--color-text);
  font-weight: var(--fw-medium);
}

.contact__item a:hover { color: var(--color-primary); }

.contact__area h4 {
  font-size: 0.9rem;
  font-weight: var(--fw-semi);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.contact__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: var(--fw-semi);
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(26,111,186,0.2);
}

/* Contact Form */
.contact__form-wrapper {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
}

.contact__form-title {
  font-size: 1.2rem;
  font-weight: var(--fw-bold);
  color: var(--color-dark);
  margin-bottom: var(--space-xl);
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: var(--space-md);
}

.form__group--checkbox {
  flex-direction: column;
  gap: 0.5rem;
}

.form__label {
  font-size: 0.875rem;
  font-weight: var(--fw-semi);
  color: var(--color-dark-mid);
}

.form__label span { color: var(--color-error); }

.form__input {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-dark);
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

.form__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26,111,186,.12);
}

.form__input.is-error { border-color: var(--color-error); }
.form__input.is-valid { border-color: var(--color-success); }

.form__select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7f91' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

.form__error {
  font-size: 0.8rem;
  color: var(--color-error);
  font-weight: var(--fw-medium);
  min-height: 1rem;
}

/* Custom checkbox */
.form__checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--color-text);
  line-height: 1.5;
}

.form__checkbox-label input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.form__checkbox-custom {
  width: 20px;
  height: 20px;
  min-width: 20px;
  border: 2px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  margin-top: 2px;
}

.form__checkbox-label input[type="checkbox"]:checked + .form__checkbox-custom {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.form__checkbox-label input[type="checkbox"]:checked + .form__checkbox-custom::after {
  content: '';
  width: 5px;
  height: 9px;
  border: 2px solid white;
  border-top: none;
  border-left: none;
  transform: rotate(45deg) translateY(-1px);
}

.form__success {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: #eafaf1;
  color: var(--color-success);
  border: 1px solid #a9dfbf;
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  font-weight: var(--fw-medium);
  font-size: 0.925rem;
  margin-top: var(--space-md);
}

/* ──────────────────────────────────────
   12. FOOTER
────────────────────────────────────── */
.footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.75);
  padding-top: var(--space-4xl);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer__tagline {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-top: 0.75rem;
  margin-bottom: var(--space-lg);
  color: rgba(255,255,255,0.6);
}

.footer__address {
  font-size: 0.875rem;
  line-height: 1.9;
  color: rgba(255,255,255,0.6);
}

.footer__address a {
  color: rgba(255,255,255,0.75);
}

.footer__address a:hover { color: var(--color-white); }

.footer__nav-title {
  font-size: 0.8rem;
  font-weight: var(--fw-semi);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-white);
  margin-bottom: var(--space-lg);
}

.footer__nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer__nav a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
}

.footer__nav a:hover { color: var(--color-white); }

.footer__contact-cta p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.footer__contact-cta .btn {
  display: block;
  text-align: center;
  margin-bottom: 0.6rem;
}

.footer__bottom {
  padding-block: 1.25rem;
}

.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer__bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
}

/* ──────────────────────────────────────
   13. BACK-TO-TOP
────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 900;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* ──────────────────────────────────────
   14. ANIMATIONS (INTERSECTION OBSERVER)
────────────────────────────────────── */
[data-animate] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].in-view {
  opacity: 1;
  transform: translateY(0);
}

[data-animate-delay="1"] { transition-delay: 0.1s; }
[data-animate-delay="2"] { transition-delay: 0.2s; }
[data-animate-delay="3"] { transition-delay: 0.3s; }
[data-animate-delay="4"] { transition-delay: 0.4s; }

/* ──────────────────────────────────────
   15. RESPONSIVE
────────────────────────────────────── */

/* Tablet ≤ 1024px */
@media (max-width: 1024px) {
  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__subtitle { max-width: 100%; }
  .hero__actions { justify-content: center; }

  .hero__visual {
    order: -1;
    max-width: 380px;
    margin-inline: auto;
  }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}

/* Tablet ≤ 768px */
@media (max-width: 768px) {
  :root { --header-h: 64px; }

  /* Nav */
  .nav-toggle { display: flex; }

  /* Lang dropdown on mobile: keep dropdown menu opening downward */
  .lang-dropdown__menu {
    right: 0;
    left: auto;
  }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: linear-gradient(180deg, #0d5ea8 0%, #1a6fba 100%);
    border-bottom: none;
    box-shadow: 0 8px 24px rgba(0,0,0,0.25);
    padding: 1rem 1.25rem 1.75rem;
    transform: translateY(-110%);
    opacity: 0;
    transition: transform var(--transition-slow), opacity var(--transition-slow);
    z-index: 999;
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
  }

  .nav__link {
    color: rgba(255,255,255,0.88);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 1rem;
  }

  .nav__link:hover,
  .nav__link.active {
    background: rgba(255,255,255,0.14);
    color: var(--color-white);
  }

  .header.scrolled .nav__link {
    color: rgba(255,255,255,0.88);
  }

  .header.scrolled .nav__link:hover,
  .header.scrolled .nav__link.active {
    background: rgba(255,255,255,0.14);
    color: var(--color-white);
  }

  .nav__cta {
    margin-top: 0.5rem;
    justify-content: flex-start;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-weight: var(--fw-medium);
    background: rgba(255,255,255,0.16) !important;
    color: var(--color-white) !important;
    box-shadow: none;
    border-radius: var(--radius-sm);
  }

  .nav__cta:hover {
    background: rgba(255,255,255,0.26) !important;
    transform: none;
  }

  /* Hero */
  .hero {
    min-height: auto;
    padding-bottom: 5rem;
  }

  .hero__content {
    padding-block: var(--space-3xl);
    gap: var(--space-2xl);
  }

  .hero__illustration { max-width: 260px; }

  /* About */
  .about__grid {
    grid-template-columns: 1fr 1fr;
  }

  /* Services */
  .services__grid {
    grid-template-columns: 1fr;
  }

  /* CTA banner */
  .cta-banner__inner {
    text-align: center;
    justify-content: center;
  }

  .cta-banner__actions { justify-content: center; }

  /* Contact */
  .contact__grid {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }

  .footer__brand { grid-column: 1 / -1; }
  .footer__contact-cta { grid-column: 1 / -1; }
}

/* Mobile ≤ 480px */
@media (max-width: 480px) {
  .section { padding-block: 3rem; }

  .hero__title { font-size: 1.55rem; }

  .about__grid { grid-template-columns: 1fr; }

  .form__row { grid-template-columns: 1fr; }

  .footer__inner { grid-template-columns: 1fr; }

  .footer__bottom-inner { flex-direction: column; text-align: center; }

  .cta-banner__actions { flex-direction: column; }
  .cta-banner__actions .btn { justify-content: center; width: 100%; }

  .hero__actions { flex-direction: column; align-items: center; }
  .hero__actions .btn {
    width: 100%;
    justify-content: center;
    white-space: normal;
    text-align: center;
    line-height: 1.35;
  }
}

/* Mobile S ≤ 360px */
@media (max-width: 360px) {
  .container { padding-inline: 1rem; }

  .hero__title { font-size: 1.4rem; }

  .hero__badge { font-size: 0.7rem; padding: 0.28rem 0.8rem; }
}

/* ──────────────────────────────────────
   16. ACCESSIBILITY
────────────────────────────────────── */
:focus-visible {
  outline: 2.5px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html { scroll-behavior: auto; }

  [data-animate] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}