/* ==========================================================================
   CERNEI — Conseil en relations publiques et communication
   ========================================================================== */

:root {
  --color-primary: #1b3a6b;
  --color-primary-light: #2c5aa0;
  --color-accent: #e0a458;
  --color-dark: #10182b;
  --color-text: #3b4252;
  --color-muted: #6b7686;
  --color-bg-alt: #f5f7fb;
  --color-border: #e6e9f2;
  --container: 1180px;
  --radius: 14px;
  --transition: 0.3s ease;
  --shadow: 0 10px 30px rgba(16, 24, 43, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--color-text);
  line-height: 1.6;
  background: #fff;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: 'Poppins', sans-serif;
  color: var(--color-dark);
  line-height: 1.25;
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 8px 20px rgba(27, 58, 107, 0.25);
}

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

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

.btn--ghost:hover {
  border-color: var(--color-primary);
  background: rgba(27, 58, 107, 0.05);
}

.btn--light {
  background: #fff;
  color: var(--color-primary);
}

.btn--light:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

/* ==========================================================================
   Header
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 4px 20px rgba(16, 24, 43, 0.05);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--color-dark);
}

.logo__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  font-weight: 800;
}

.logo--light {
  color: #fff;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text);
  transition: color var(--transition);
  position: relative;
}

.nav__link:not(.nav__cta):after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav__link:not(.nav__cta):hover:after {
  width: 100%;
}

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

.nav__cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 10px 22px;
  border-radius: 50px;
  font-weight: 600;
  transition: all var(--transition);
}

.nav__cta:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
}

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  z-index: 1100;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: all var(--transition);
  margin: 0 auto;
}

.burger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.burger.active span:nth-child(2) {
  opacity: 0;
}
.burger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  padding: 160px 0 100px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(44, 90, 160, 0.12), transparent 60%),
              radial-gradient(ellipse at bottom left, rgba(224, 164, 88, 0.12), transparent 55%),
              var(--color-bg-alt);
  z-index: -1;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
}

.badge {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 50px;
  background: rgba(27, 58, 107, 0.08);
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800;
  margin-bottom: 22px;
}

.hero h1 span {
  color: var(--color-primary-light);
  position: relative;
}

.hero__text {
  font-size: 1.05rem;
  color: var(--color-muted);
  max-width: 540px;
  margin-bottom: 34px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

.hero__stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.hero__stat {
  display: flex;
  flex-direction: column;
}

.hero__stat strong {
  font-family: 'Poppins', sans-serif;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-primary);
}

.hero__stat span {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.hero__media img {
  width: 100%;
  border-radius: 24px;
  box-shadow: var(--shadow);
  aspect-ratio: 4/3.2;
  object-fit: cover;
}

/* ==========================================================================
   Marquee band
   ========================================================================== */

.band {
  background: var(--color-primary);
  overflow: hidden;
  padding: 18px 0;
}

.band__track {
  display: flex;
  gap: 50px;
  white-space: nowrap;
  animation: scroll-left 30s linear infinite;
  width: max-content;
}

.band__track span {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  position: relative;
  padding-right: 50px;
}

.band__track span:after {
  content: '•';
  position: absolute;
  right: -28px;
  color: var(--color-accent);
}

@keyframes scroll-left {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ==========================================================================
   Sections common
   ========================================================================== */

.section {
  padding: 100px 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section__head {
  max-width: 720px;
  margin: 0 auto 60px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-weight: 700;
  color: var(--color-primary-light);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  margin-bottom: 12px;
}

.section__head h2,
.about__content h2,
.why__content h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 18px;
}

.section__lead {
  color: var(--color-muted);
  font-size: 1.05rem;
}

/* ==========================================================================
   Grid / info cards
   ========================================================================== */

.grid {
  display: grid;
  gap: 28px;
}

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

.info-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.info-card__icon {
  font-size: 2rem;
  margin-bottom: 18px;
}

.info-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

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

/* ==========================================================================
   Services
   ========================================================================== */

.services {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.service img {
  width: 100%;
  height: 170px;
  object-fit: cover;
}

.service__body {
  padding: 24px;
}

.service__num {
  display: inline-block;
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.service__body h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.service__body p {
  color: var(--color-muted);
  font-size: 0.9rem;
}

/* ==========================================================================
   Why us
   ========================================================================== */

.why {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 60px;
  align-items: center;
}

.why__media img {
  border-radius: 24px;
  width: 100%;
  aspect-ratio: 4/3.4;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.check-list {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-weight: 500;
}

.check {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  min-width: 26px;
  border-radius: 50%;
  background: rgba(27, 58, 107, 0.1);
  color: var(--color-primary);
  font-weight: 800;
  font-size: 0.85rem;
}

/* ==========================================================================
   Steps
   ========================================================================== */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
}

.step {
  background: #fff;
  border-radius: var(--radius);
  padding: 36px 26px;
  text-align: center;
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.step__circle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
  margin: 0 auto 18px;
}

.step h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.step p {
  color: var(--color-muted);
  font-size: 0.92rem;
}

/* ==========================================================================
   About
   ========================================================================== */

.about {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about__content p {
  margin-bottom: 16px;
}

.about__media img {
  border-radius: 24px;
  width: 100%;
  aspect-ratio: 4/3.4;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.about__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 30px;
}

.about__item {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.about__item strong {
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  color: var(--color-primary);
  font-size: 1.1rem;
}

.about__item span {
  font-size: 0.85rem;
  color: var(--color-muted);
}

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

.cta {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  padding: 70px 0;
}

.cta__inner {
  text-align: center;
  color: #fff;
}

.cta__inner h2 {
  color: #fff;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin-bottom: 14px;
}

.cta__inner p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 30px;
  font-size: 1.05rem;
}

/* ==========================================================================
   Contact
   ========================================================================== */

.contact {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 50px;
}

.contact__form {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  font-family: inherit;
  font-size: 0.95rem;
  background: #fff;
  transition: border-color var(--transition);
  resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary-light);
}

.contact__form .btn {
  align-self: flex-start;
}

.form-success {
  display: none;
  color: #1d8a4d;
  font-weight: 600;
  font-size: 0.9rem;
  background: rgba(29, 138, 77, 0.1);
  padding: 12px 16px;
  border-radius: 10px;
}

.form-success.visible {
  display: block;
}

.contact__info h3 {
  margin-bottom: 24px;
  font-size: 1.3rem;
}

.contact__list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.contact__list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact__icon {
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--color-bg-alt);
  flex-shrink: 0;
}

.contact__list strong {
  display: block;
  margin-bottom: 4px;
}

.contact__list p {
  color: var(--color-muted);
  font-size: 0.92rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 70px 0 0;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__brand p {
  margin-top: 14px;
  font-size: 0.92rem;
  max-width: 240px;
}

.footer__col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 18px;
}

.footer__col a,
.footer__col p {
  display: block;
  font-size: 0.92rem;
  margin-bottom: 10px;
  transition: color var(--transition);
}

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

.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 22px 0;
  font-size: 0.85rem;
}

/* ==========================================================================
   Back to top
   ========================================================================== */

.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--color-primary);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 900;
}

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

.back-to-top:hover {
  background: var(--color-primary-light);
}

/* ==========================================================================
   Animations
   ========================================================================== */

[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

@media (max-width: 900px) {
  .hero__inner,
  .why,
  .about,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero__inner {
    text-align: left;
  }

  .hero__media {
    order: -1;
  }

  .why__media,
  .about__media {
    order: -1;
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 78px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 18px;
    box-shadow: 0 12px 30px rgba(16, 24, 43, 0.08);
    transform: translateY(-150%);
    opacity: 0;
    transition: all var(--transition);
    pointer-events: none;
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav__cta {
    width: 100%;
    text-align: center;
  }

  .burger {
    display: flex;
  }

  .hero {
    padding: 130px 0 70px;
    text-align: center;
  }

  .hero__inner {
    text-align: center;
  }

  .hero__text {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__stats {
    justify-content: center;
    text-align: center;
  }

  .grid--3,
  .services,
  .steps {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

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

  .section {
    padding: 70px 0;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

  .btn {
    width: 100%;
  }

  .hero__actions {
    flex-direction: column;
  }
}