/* ----------------------------- */
/* 1. VARIABLES         */
/* ----------------------------- */

:root {
  /* Light Theme */
  --color-primary: #007bff;
  --color-primary-dark: #0056b3;
  --color-secondary: #00a896;
  --color-accent: #ff6b6b;
  --color-background: #f8f9fa;
  --color-surface: #ffffff;
  --color-text-primary: #212529;
  --color-text-secondary: #6c757d;
  --color-border: #e9ecef;
  --shadow-color: rgba(0, 0, 0, 0.08);

  /* Fonts */
  --font-primary: "Poppins", sans-serif;
  --font-secondary: "Lato", sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-s: 1rem;
  --spacing-m: 2rem;
  --spacing-l: 4rem;
  --spacing-xl: 6rem;

  /* Border Radius */
  --border-radius-s: 4px;
  --border-radius-m: 8px;
  --border-radius-l: 16px;

  /* Transitions */
  --transition-fast: 0.2s ease-in-out;
  --transition-medium: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Dark Theme */
    --color-primary: #0a84ff;
    --color-primary-dark: #0060df;
    --color-secondary: #00bfa5;
    --color-accent: #ff7f7f;
    --color-background: #121212;
    --color-surface: #1e1e1e;
    --color-text-primary: #eaeaea;
    --color-text-secondary: #a0a0a0;
    --color-border: #333333;
    --shadow-color: rgba(0, 0, 0, 0.25);
  }
}

/* ----------------------------- */
/* 2. BASE STYLES       */
/* ----------------------------- */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-secondary);
  background-color: var(--color-background);
  color: var(--color-text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-primary);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
}
h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}
h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}
h4 {
  font-size: 1.1rem;
}

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

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

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

ul {
  list-style: none;
}

section {
  padding: var(--spacing-l) 0;
}

@media (min-width: 1200px) {
  section {
    padding: var(--spacing-xl) 0;
  }
}

/* ----------------------------- */
/* 3. UTILITY CLASSES      */
/* ----------------------------- */

.container {
  width: 90%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.text-center {
  text-align: center;
}

.text-accent {
  color: var(--color-accent);
}

.section-header {
  margin-bottom: var(--spacing-l);
}

.section-title {
  margin-bottom: var(--spacing-s);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.btn {
  display: inline-block;
  padding: 0.8em 1.6em;
  border: 2px solid transparent;
  border-radius: var(--border-radius-m);
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-medium);
  transform: translateY(0);
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px -10px var(--color-primary);
}

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

.btn-secondary:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.btn-lg {
  padding: 1em 2em;
  font-size: 1.1rem;
}

/* ----------------------------- */
/* 4. HEADER & NAV         */
/* ----------------------------- */

.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: var(--spacing-s) 0;
  background-color: transparent;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.main-header.scrolled {
  background-color: var(--color-surface);
  box-shadow: 0 2px 15px var(--shadow-color);
}

.main-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

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

.logo-accent {
  color: var(--color-primary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-m);
}

.nav-link {
  font-weight: 600;
  color: var(--color-text-secondary);
  position: relative;
  padding: var(--spacing-xs) 0;
}

.main-header.scrolled .nav-link {
  color: var(--color-text-primary);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-medium);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.5rem;
  color: var(--color-text-primary);
  z-index: 1001;
}

/* ----------------------------- */
/* 5. SECTIONS         */
/* ----------------------------- */

/* HERO */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  text-align: center;
  position: relative;
  padding: var(--spacing-xl) 0;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.hero-background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.1;
}

#hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    ellipse at center,
    transparent 0%,
    var(--color-background) 70%
  );
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  margin-bottom: var(--spacing-s);
}

.hero-subtitle {
  max-width: 700px;
  margin: 0 auto var(--spacing-m);
  font-size: 1.2rem;
  color: var(--color-text-secondary);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-s);
}

/* DESCRIPTION */
.description-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-m);
}

@media (min-width: 768px) {
  .description-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.description-card {
  background-color: var(--color-surface);
  padding: var(--spacing-m);
  border-radius: var(--border-radius-l);
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 6px var(--shadow-color);
  transition: transform var(--transition-medium),
    box-shadow var(--transition-medium);
}

.description-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px -5px var(--shadow-color);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-s);
}

.illusion-card .card-icon {
  color: var(--color-accent);
}
.reality-card .card-icon {
  color: var(--color-secondary);
}

/* ADVANTAGES (STRATEGIE) */
.advantages-section {
  background-color: var(--color-surface);
}
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-m);
}

.advantage-item {
  text-align: center;
  padding: var(--spacing-m);
}

.advantage-icon {
  font-size: 3rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-s);
  transition: transform var(--transition-medium);
}

.advantage-item:hover .advantage-icon {
  transform: scale(1.2) rotate(10deg);
}

.advantage-title {
  margin-bottom: var(--spacing-xs);
}

/* CASE STUDIES */
.case-studies-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-l);
}

.case-study {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: var(--spacing-m);
  background-color: var(--color-surface);
  padding: var(--spacing-m);
  border-radius: var(--border-radius-l);
  overflow: hidden;
}

@media (min-width: 992px) {
  .case-study {
    grid-template-columns: 1fr 1fr;
  }
  .case-study.reverse .case-study-content {
    order: 2;
  }
}

.case-study-image img {
  border-radius: var(--border-radius-m);
  height: 100%;
  object-fit: cover;
}

.case-study-content blockquote {
  font-size: 1.2rem;
  font-style: italic;
  border-left: 4px solid var(--color-primary);
  padding-left: var(--spacing-s);
  margin-bottom: var(--spacing-s);
}

.case-study-content cite {
  font-style: normal;
  display: block;
  font-weight: 700;
}

.case-study-author {
  display: block;
}

.case-study-result {
  display: block;
  font-size: 0.9rem;
  color: var(--color-secondary);
  font-weight: 600;
  margin-top: var(--spacing-xs);
}

/* MISSION & VISION */
#mission-vision {
  background: linear-gradient(
    45deg,
    var(--color-primary),
    var(--color-secondary)
  );
  color: #fff;
}

#mission-vision .section-title,
#mission-vision p,
#mission-vision h3 {
  color: #fff;
}

.mission-vision-grid {
  display: grid;
  gap: var(--spacing-m);
}

@media (min-width: 768px) {
  .mission-vision-grid {
    grid-template-columns: 1fr 1fr;
  }
}
#mission-vision .text-accent {
  color: #fff;
}

/* TEAM */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-m);
}

.team-member {
  background-color: var(--color-surface);
  padding: var(--spacing-m);
  border-radius: var(--border-radius-m);
  text-align: center;
  border: 1px solid var(--color-border);
  transition: transform var(--transition-medium);
}

.team-member:hover {
  transform: translateY(-5px);
}

.team-member-icon {
  font-size: 4rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-s);
}

.team-member-name {
  margin-bottom: var(--spacing-xs);
}

.team-member-role {
  color: var(--color-text-secondary);
  font-weight: 600;
  margin-bottom: var(--spacing-s);
}

/* REVIEWS */
#reviews {
  background-color: var(--color-surface);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-m);
}

.review-card {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-m);
  background-color: var(--color-background);
  border-radius: var(--border-radius-m);
  border: 1px solid var(--color-border);
}

.review-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-s);
  margin-bottom: var(--spacing-s);
}

.review-author-icon {
  font-size: 3rem;
  color: var(--color-secondary);
}

.review-text {
  flex-grow: 1;
  font-style: italic;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-s);
}

.review-rating {
  color: #ffc107;
}

/* FAQ */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-item:first-of-type {
  border-top: 1px solid var(--color-border);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: var(--spacing-s) 0;
  cursor: pointer;
  font-size: 1.2rem;
  font-weight: 600;
  font-family: var(--font-primary);
}

.faq-question::marker,
.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question i {
  transition: transform var(--transition-fast);
}

.faq-answer {
  padding-bottom: var(--spacing-s);
  color: var(--color-text-secondary);
}

details[open] .faq-question i {
  transform: rotate(180deg);
}

.faq-more-link {
  margin-top: var(--spacing-m);
}

/* CTA */
#cta {
  background-color: var(--color-primary);
  color: #fff;
  text-align: center;
}

.cta-title,
.cta-text {
  color: #fff;
}

.cta-title {
  margin-bottom: var(--spacing-s);
}
.cta-text {
  max-width: 600px;
  margin: 0 auto var(--spacing-m);
  opacity: 0.9;
}
.cta-btn {
  background-color: #fff;
  color: var(--color-primary);
}
.cta-btn:hover {
  background-color: var(--color-background);
  color: var(--color-primary);
  box-shadow: 0 10px 20px -10px rgba(0, 0, 0, 0.3);
}

/* ----------------------------- */
/* 6. FOOTER           */
/* ----------------------------- */

.main-footer {
  background-color: var(--color-surface);
  padding-top: var(--spacing-l);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-m);
  margin-bottom: var(--spacing-m);
}

.footer-heading,
.footer-logo {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-s);
  font-weight: 700;
}

.footer-logo {
  color: var(--color-text-primary);
}

.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-column ul li a {
  color: var(--color-text-secondary);
}
.footer-column ul li a:hover {
  color: var(--color-primary);
  padding-left: 5px;
}

.footer-column i {
  margin-right: var(--spacing-xs);
}

.footer-socials {
  display: flex;
  gap: var(--spacing-s);
  margin-top: var(--spacing-s);
}
.footer-socials a {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-s) 0;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* ----------------------------- */
/* 7. ANIMATIONS & MISC     */
/* ----------------------------- */

[data-aos] {
  opacity: 0;
  transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275),
    opacity 0.8s ease;
}

[data-aos="fade-up"] {
  transform: translateY(50px);
}

[data-aos="fade-right"] {
  transform: translateX(-50px);
}

[data-aos="fade-left"] {
  transform: translateX(50px);
}

[data-aos="zoom-in"] {
  transform: scale(0.9);
}

[data-aos="flip-left"] {
  transform: perspective(1000px) rotateY(-90deg);
}

[data-aos].is-visible {
  opacity: 1;
  transform: translate(0, 0) scale(1) rotate(0);
}

/* Cookie Banner */
.cookie-consent-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  padding: var(--spacing-s);
  box-shadow: 0 -2px 10px var(--shadow-color);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-s);
  transform: translateY(100%);
  animation: slideUp 0.5s forwards;
}
.cookie-consent-text {
  flex-grow: 1;
  text-align: center;
}
.cookie-consent-buttons {
  display: flex;
  gap: var(--spacing-s);
}

@keyframes slideUp {
  to {
    transform: translateY(0);
  }
}

/* ----------------------------- */
/* 8. RESPONSIVE          */
/* ----------------------------- */

@media (max-width: 992px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 60%;
    max-width: 300px;
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    background-color: var(--color-surface);
    box-shadow: -5px 0 15px var(--shadow-color);
    transition: right 0.4s cubic-bezier(0.77, 0, 0.175, 1);
  }

  .nav-menu.is-active {
    right: 0;
  }

  .nav-link {
    color: var(--color-text-primary);
    font-size: 1.2rem;
  }

  .nav-cta {
    display: none;
  }

  .hamburger {
    display: block;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .footer-column ul {
    align-items: center;
  }
  .footer-socials {
    justify-content: center;
  }
  .cookie-consent-banner {
    flex-direction: column;
  }
}