/* ==========================================================================
   1001 Couleurs Habitat - Stylesheet
   Design: Light, modern, enthusiastic
   Colors: Primary #C4664B, Secondary #3E3E3C, Accent #C4664B, Dark #2A2A28, Light #F5F1EA
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700&family=Inter:wght@400;500;600&display=swap');

:root {
  --primary-color: #C4664B;
  --primary-hover: #AC5539;
  --secondary-color: #3E3E3C;
  --secondary-light: #EDE7DC;
  --accent-color: #C4664B;
  --dark-color: #2A2A28;
  --text-color: #3E3E3C;
  --light-color: #F5F1EA;
  --white: #FFFFFF;
  --border-color: #E0D9CC;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', sans-serif;
  --font-serif: 'Fraunces', serif;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  scroll-behavior: smooth;
  color: var(--text-color);
  background-color: var(--white);
}

body {
  line-height: 1.6;
  overflow-x: hidden;
  background-color: var(--light-color);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--dark-color);
  font-weight: 700;
  line-height: 1.25;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; margin-bottom: 1.5rem; position: relative; }
h3 { font-size: 1.5rem; }

p {
  margin-bottom: 1rem;
  color: #4A5568;
}

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

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

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

ul {
  list-style: none;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
header {
  background-color: var(--white);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary-color);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
}

.logo span {
  color: var(--dark-color);
  font-weight: 400;
}

.nav-menu {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  color: var(--dark-color);
  font-weight: 600;
  font-size: 0.95rem;
  position: relative;
  padding: 0.5rem 0;
}

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

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

.btn-nav {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 4px 10px rgba(0, 119, 182, 0.2);
}

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

/* Mobile Menu Button */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--dark-color);
  cursor: pointer;
}

/* ==========================================================================
   Components & Common Layouts
   ========================================================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background-color: var(--primary-color);
  margin: 0.75rem auto 0;
  border-radius: 2px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 3rem;
  align-items: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 8px;
  font-weight: 700;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(0, 119, 182, 0.25);
}

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

.btn-secondary {
  background-color: var(--white);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

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

.btn-accent {
  background-color: var(--accent-color);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(247, 127, 0, 0.25);
}

.btn-accent:hover {
  background-color: #E07200;
  color: var(--white);
  transform: translateY(-2px);
}

/* Cards */
.card {
  background-color: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card-img-wrapper {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

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

.card-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background-color: var(--primary-color);
  color: var(--white);
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}

.card-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
  color: #718096;
  margin-bottom: 0.75rem;
}

.card-title {
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
  color: var(--dark-color);
  line-height: 1.4;
}

.card-desc {
  font-size: 0.95rem;
  color: #4A5568;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-link {
  font-weight: 700;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  background: linear-gradient(135deg, #E0F2FE 0%, #FFFFFF 100%);
  padding: 6rem 1.5rem;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to top right, var(--light-color) 49%, transparent 50%);
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.hero-text {
  z-index: 2;
}

.hero-tagline {
  background-color: var(--secondary-light);
  color: var(--primary-color);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  color: var(--dark-color);
}

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

.hero-desc {
  font-size: 1.2rem;
  color: #4A5568;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 1rem;
}

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

.hero-img {
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 2;
}

.hero-backdrop {
  position: absolute;
  top: -20px;
  right: -20px;
  width: 100%;
  height: 100%;
  background: var(--secondary-color);
  border-radius: 20px;
  z-index: 1;
  opacity: 0.3;
}

/* ==========================================================================
   Simulateur Widget & Interactive Box
   ========================================================================== */
.simulator-box {
  background-color: var(--white);
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.sim-steps {
  display: flex;
  justify-content: space-between;
  margin-bottom: 2rem;
  position: relative;
}

.sim-steps::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--border-color);
  z-index: 1;
  transform: translateY(-50%);
}

.sim-step {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--white);
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  z-index: 2;
  transition: var(--transition);
}

.sim-step.active {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--white);
}

.sim-step.completed {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
  color: var(--dark-color);
}

.sim-group {
  margin-bottom: 1.5rem;
}

.sim-label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--dark-color);
}

.sim-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.sim-option {
  border: 2px solid var(--border-color);
  border-radius: 10px;
  padding: 1rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.sim-option:hover {
  border-color: var(--secondary-color);
  background-color: rgba(144, 224, 239, 0.05);
}

.sim-option.selected {
  border-color: var(--primary-color);
  background-color: var(--secondary-light);
}

.sim-option-title {
  font-weight: 700;
  color: var(--dark-color);
}

.sim-option-desc {
  font-size: 0.8rem;
  color: #718096;
}

.sim-input {
  width: 100%;
  padding: 1rem;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark-color);
}

.sim-input:focus {
  outline: none;
  border-color: var(--primary-color);
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
  background-color: var(--dark-color);
  color: rgba(255, 255, 255, 0.8);
  padding: 5rem 1.5rem 2rem;
  border-top: 5px solid var(--primary-color);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand h4 {
  color: var(--white);
  font-size: 1.5rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.95rem;
}

.footer-title {
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  position: relative;
}

.footer-title::after {
  content: '';
  display: block;
  width: 30px;
  height: 2px;
  background-color: var(--secondary-color);
  margin-top: 0.5rem;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--primary-color);
  padding-left: 5px;
}

.footer-contact {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-contact li {
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom-links a:hover {
  color: var(--white);
}

/* ==========================================================================
   Reveal on Scroll System
   ========================================================================== */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero h1 { font-size: 3rem; }
  .footer-container { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--white);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
    box-shadow: var(--shadow-md);
    border-top: 1px solid var(--border-color);
  }
  .nav-menu.active {
    display: flex;
  }
  .hero-content {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }
  .hero-actions {
    justify-content: center;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .footer-container {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}