/* ============================================
   AQUABATEQ — Design System
   Palette bleu eau, moderne et professionnel
   ============================================ */

:root {
  /* Couleurs */
  --bg: #f6fafd;
  --bg-alt: #eef5fb;
  --ink: #0a2540;
  --ink-2: #334e68;
  --ink-3: #6b7f95;
  --line: #e2ecf4;

  --brand-50: #eff9ff;
  --brand-100: #dff2fe;
  --brand-300: #7dd3fc;
  --brand-500: #0ea5e9;
  --brand-600: #0284c7;
  --brand-700: #0369a1;
  --brand-900: #0c4a6e;
  --brand-dark: #0a2540;

  --accent: #06b6d4;

  --white: #ffffff;
  --shadow-sm: 0 1px 2px rgba(10,37,64,0.06);
  --shadow-md: 0 8px 24px -8px rgba(10,37,64,0.12);
  --shadow-lg: 0 24px 60px -20px rgba(10,37,64,0.25);
  --shadow-brand: 0 20px 40px -12px rgba(2,132,199,0.35);

  /* Rayons */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 32px;

  /* Typo */
  --font: 'Manrope', system-ui, -apple-system, sans-serif;
  --font-display: 'Space Grotesk', 'Manrope', system-ui, sans-serif;

  --transition: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ============================================
   TYPOGRAPHIE
   ============================================ */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
}

h1 { font-size: clamp(2.2rem, 5.5vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 4vw, 3rem); }
h3 { font-size: 1.25rem; letter-spacing: -0.01em; }
h4 { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-3); font-weight: 700; }

.grad {
  background: linear-gradient(120deg, var(--brand-500), var(--accent) 60%, var(--brand-700));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  background-size: 200% 200%;
  animation: gradShift 6s ease infinite;
}

@keyframes gradShift {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.9rem 0.4rem 0.6rem;
  background: var(--brand-100);
  color: var(--brand-700);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 1.25rem;
}

.eyebrow--light {
  background: rgba(255,255,255,0.14);
  color: #dff2fe;
}

.eyebrow__dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--brand-500);
  box-shadow: 0 0 0 4px rgba(14,165,233,0.2);
  animation: pulse 2s ease-in-out infinite;
}

.eyebrow--light .eyebrow__dot {
  background: var(--brand-300);
  box-shadow: 0 0 0 4px rgba(125,211,252,0.25);
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.2); opacity: 0.7; }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.3s var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  color: white;
  box-shadow: var(--shadow-brand);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 48px -12px rgba(2,132,199,0.5);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--line);
}

.btn--ghost:hover {
  border-color: var(--brand-500);
  color: var(--brand-700);
  background: var(--brand-50);
  transform: translateY(-2px);
}

.btn--block {
  width: 100%;
}

/* ============================================
   NAV
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0.9rem 0;
  background: rgba(246,250,253,0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s var(--transition);
}

.nav.is-scrolled {
  padding: 0.6rem 0;
  border-bottom-color: var(--line);
  background: rgba(246,250,253,0.9);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--ink);
}

.nav__logo strong {
  font-weight: 700;
  color: var(--brand-700);
}

.nav__logo--light,
.nav__logo--light strong {
  color: white;
}

.nav__logo-icon {
  width: 32px;
  height: 32px;
  filter: drop-shadow(0 4px 12px rgba(14,165,233,0.4));
  transition: transform 0.4s var(--transition);
}

.nav__logo:hover .nav__logo-icon {
  transform: rotate(-8deg) scale(1.05);
}

.nav__links {
  display: flex;
  gap: 2rem;
}

.nav__links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-2);
  position: relative;
  padding: 0.3rem 0;
  transition: color 0.2s;
}

.nav__links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-500), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--transition);
}

.nav__links a:hover {
  color: var(--brand-700);
}

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

.nav__burger {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: var(--r-sm);
  padding: 0;
}

.nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.3s var(--transition), opacity 0.3s;
}

.nav__burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav__burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__mobile {
  display: none;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem 1.25rem 1.5rem;
  background: white;
  border-bottom: 1px solid var(--line);
}

.nav__mobile a {
  padding: 0.75rem 0;
  color: var(--ink);
  font-weight: 500;
  border-bottom: 1px solid var(--line);
}

.nav__mobile.is-open {
  display: flex;
  animation: slideDown 0.3s var(--transition);
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  padding: 8rem 0 8rem;
  overflow: hidden;
  isolation: isolate;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, var(--bg) 0%, var(--brand-50) 60%, var(--bg) 100%);
}

.hero__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  z-index: -1;
}

.hero__blob--1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--brand-300), transparent 70%);
  top: -100px;
  right: -100px;
  animation: floatBlob 18s ease-in-out infinite;
}

.hero__blob--2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #67e8f9, transparent 70%);
  bottom: 100px;
  left: -100px;
  animation: floatBlob 22s ease-in-out infinite reverse;
}

@keyframes floatBlob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, 30px) scale(1.05); }
  66% { transform: translate(-30px, 50px) scale(0.95); }
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero__title {
  margin-bottom: 1.5rem;
}

.hero__lead {
  font-size: 1.1rem;
  color: var(--ink-2);
  max-width: 540px;
  margin-bottom: 2.25rem;
}

.hero__cta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero__meta {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.hero__meta-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--brand-700);
  line-height: 1;
  margin-bottom: 0.3rem;
}

.hero__meta-item span {
  font-size: 0.85rem;
  color: var(--ink-3);
}

/* Hero visual - card image */
.hero__visual {
  position: relative;
}

.hero__card {
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 5;
  background: var(--brand-50);
  transform: perspective(1000px) rotateY(-4deg) rotateX(2deg);
  transition: transform 0.6s var(--transition);
}

.hero__card:hover {
  transform: perspective(1000px) rotateY(0) rotateX(0);
}

.hero__card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--transition);
}

.hero__card:hover img {
  transform: scale(1.05);
}

.hero__card-badge {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brand-700);
  box-shadow: var(--shadow-md);
}

/* Vagues SVG */
.waves {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 90px;
  z-index: 1;
  pointer-events: none;
}

.waves svg {
  width: 100%;
  height: 100%;
  display: block;
}

.waves__parallax use {
  animation: waveMove 12s cubic-bezier(0.55, 0.5, 0.45, 0.5) infinite;
}

.waves__parallax use:nth-child(1) { animation-delay: -2s; animation-duration: 8s; }
.waves__parallax use:nth-child(2) { animation-delay: -3s; animation-duration: 12s; }
.waves__parallax use:nth-child(3) { animation-delay: -4s; animation-duration: 16s; }
.waves__parallax use:nth-child(4) { animation-delay: -5s; animation-duration: 20s; }

@keyframes waveMove {
  0%   { transform: translate3d(-90px, 0, 0); }
  100% { transform: translate3d(85px, 0, 0); }
}

/* ============================================
   TRUST
   ============================================ */
.trust {
  padding: 3rem 0;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.trust__label {
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.trust__grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink-2);
  font-size: 1.1rem;
}

.trust__grid .dot {
  width: 6px;
  height: 6px;
  background: var(--brand-300);
  border-radius: 999px;
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: 6rem 0;
}

.section__head {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}

.section__head p {
  color: var(--ink-2);
  font-size: 1.1rem;
  margin-top: 1rem;
}

/* ============================================
   SERVICES
   ============================================ */
.services {
  background: var(--white);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card {
  position: relative;
  padding: 2rem 1.75rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: all 0.4s var(--transition);
  overflow: hidden;
  isolation: isolate;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--brand-50), transparent 50%);
  opacity: 0;
  transition: opacity 0.4s var(--transition);
  z-index: -1;
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--brand-300);
  box-shadow: var(--shadow-md);
}

.card:hover::before {
  opacity: 1;
}

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: var(--brand-50);
  color: var(--brand-700);
  border-radius: var(--r-md);
  margin-bottom: 1.25rem;
  transition: all 0.4s var(--transition);
}

.card:hover .card__icon {
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  color: white;
  transform: rotate(-5deg) scale(1.05);
}

.card__icon svg {
  width: 26px;
  height: 26px;
}

.card h3 {
  margin-bottom: 0.6rem;
}

.card p {
  color: var(--ink-2);
  font-size: 0.95rem;
}

.card--feature {
  background: linear-gradient(135deg, var(--brand-dark), var(--brand-900));
  border-color: transparent;
  color: white;
  grid-column: span 1;
}

.card--feature h3,
.card--feature p {
  color: white;
}

.card--feature p {
  opacity: 0.85;
}

.card--feature::before {
  background: radial-gradient(circle at top right, rgba(56,189,248,0.25), transparent 60%);
  opacity: 1;
}

.card__icon--accent {
  background: rgba(56,189,248,0.15);
  color: var(--brand-300);
}

.card--feature:hover .card__icon {
  background: linear-gradient(135deg, var(--brand-500), var(--accent));
  color: white;
}

.card__tag {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  background: rgba(56,189,248,0.2);
  color: var(--brand-300);
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.8rem;
}

.card__link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--brand-300);
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform 0.2s;
}

.card__link:hover {
  transform: translateX(4px);
}

/* ============================================
   RADON
   ============================================ */
.radon {
  background: var(--bg-alt);
  position: relative;
  overflow: hidden;
}

.radon__grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 4rem;
  align-items: center;
}

.radon__visual {
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  box-shadow: var(--shadow-lg);
}

.radon__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--transition);
}

.radon__visual:hover img {
  transform: scale(1.05);
}

.radon__stat {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  padding: 1rem 1.25rem;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-md);
}

.radon__stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--brand-700);
  line-height: 1;
  margin-bottom: 0.3rem;
}

.radon__stat span {
  font-size: 0.85rem;
  color: var(--ink-2);
}

.radon__content p {
  color: var(--ink-2);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
}

.radon__list {
  list-style: none;
  margin: 2rem 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

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

.radon__list .check {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--brand-500);
  color: white;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(14,165,233,0.35);
}

.radon__list strong {
  color: var(--ink);
  font-family: var(--font-display);
}

.radon__list span {
  color: var(--ink-3);
  font-size: 0.9rem;
}

/* ============================================
   ABOUT
   ============================================ */
.about {
  background: var(--white);
}

.about__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about__content p {
  color: var(--ink-2);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
}

.about__quote {
  position: relative;
  margin-top: 2rem;
  padding: 1.75rem 1.75rem 1.75rem 2rem;
  background: var(--bg-alt);
  border-left: 3px solid var(--brand-500);
  border-radius: var(--r-md);
}

.about__quote svg {
  color: var(--brand-300);
  margin-bottom: 0.5rem;
}

.about__quote p {
  font-style: italic;
  color: var(--ink);
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
}

.about__quote cite {
  color: var(--ink-3);
  font-size: 0.9rem;
  font-style: normal;
  font-weight: 600;
}

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat {
  padding: 1.75rem 1.5rem;
  background: var(--bg-alt);
  border-radius: var(--r-lg);
  transition: transform 0.3s var(--transition), box-shadow 0.3s var(--transition);
}

.stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--brand-700);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat span {
  color: var(--ink-2);
  font-size: 0.9rem;
}

.stat--accent {
  background: linear-gradient(135deg, var(--brand-dark), var(--brand-900));
  color: white;
}

.stat--accent strong {
  color: var(--brand-300);
}

.stat--accent span {
  color: rgba(255,255,255,0.85);
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
  padding: 6rem 0 8rem;
  background: var(--bg);
}

.contact__card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: white;
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.contact__left {
  padding: 3.5rem 3rem;
  background: linear-gradient(160deg, var(--brand-dark), var(--brand-900));
  color: white;
  position: relative;
  overflow: hidden;
}

.contact__left::before,
.contact__left::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
}

.contact__left::before {
  width: 300px;
  height: 300px;
  background: rgba(14,165,233,0.35);
  top: -100px;
  right: -100px;
}

.contact__left::after {
  width: 250px;
  height: 250px;
  background: rgba(6,182,212,0.25);
  bottom: -50px;
  left: -50px;
}

.contact__left > * {
  position: relative;
  z-index: 1;
}

.contact__left h2 {
  color: white;
  margin-bottom: 1rem;
}

.contact__left > p {
  color: rgba(255,255,255,0.85);
  margin-bottom: 2rem;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact__link {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  color: white;
  transition: transform 0.2s;
}

a.contact__link:hover {
  transform: translateX(4px);
}

.contact__icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--r-sm);
  color: var(--brand-300);
}

.contact__text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  line-height: 1.35;
}

.contact__text > span {
  display: block;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.contact__text > strong {
  display: block;
  font-size: 1rem;
  color: white;
  font-weight: 600;
  word-break: break-word;
}

.contact__text > em {
  display: block;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.65);
  font-style: normal;
  margin-top: 0.1rem;
}

.contact__form {
  padding: 3.5rem 3rem;
}

.contact__form h3 {
  margin-bottom: 1.5rem;
}

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

.field {
  display: block;
  margin-bottom: 1rem;
}

.field > span {
  display: block;
  font-size: 0.85rem;
  color: var(--ink-2);
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1.5px solid var(--line);
  border-radius: var(--r-md);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  background: white;
  transition: all 0.2s var(--transition);
  font-weight: 500;
}

.field textarea {
  resize: vertical;
  min-height: 100px;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--brand-500);
  box-shadow: 0 0 0 4px rgba(14,165,233,0.15);
}

.form__success {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  background: #ecfdf5;
  color: #047857;
  border-radius: var(--r-sm);
  font-size: 0.9rem;
  font-weight: 500;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s;
}

.form__success.is-visible {
  opacity: 1;
  max-height: 100px;
  margin-top: 1rem;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--brand-dark);
  color: rgba(255,255,255,0.8);
  padding: 4rem 0 2rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer p,
.footer li {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
}

.footer .nav__logo {
  margin-bottom: 1rem;
}

.footer h4 {
  color: white;
  margin-bottom: 1rem;
}

.footer ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer a {
  color: rgba(255,255,255,0.75);
  transition: color 0.2s;
}

.footer a:hover {
  color: var(--brand-300);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer__bottom p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

/* ============================================
   REVEAL / SCROLL ANIMATIONS
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--transition), transform 0.8s var(--transition);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 960px) {
  .nav__links,
  .nav__cta {
    display: none;
  }

  .nav__burger {
    display: flex;
  }

  .hero {
    padding: 7rem 0 6rem;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero__visual {
    max-width: 400px;
    margin: 0 auto;
  }

  .hero__card {
    transform: none;
  }

  .section {
    padding: 4rem 0;
  }

  .section__head {
    margin-bottom: 2.5rem;
  }

  .radon__grid,
  .about__grid,
  .contact__card {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .radon__visual {
    max-width: 400px;
    margin: 0 auto;
    aspect-ratio: 4 / 3;
  }

  .contact__left,
  .contact__form {
    padding: 2.5rem 1.75rem;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: left;
  }
}

@media (max-width: 640px) {
  .hero__meta {
    gap: 1.5rem;
  }

  .hero__meta-item strong {
    font-size: 1.3rem;
  }

  .form__row {
    grid-template-columns: 1fr;
    gap: 0;
  }

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

  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.8rem; }

  .btn {
    padding: 0.75rem 1.25rem;
    font-size: 0.9rem;
  }

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