/* ================================================================
   ESTIMMO 2.0 — Feuille de style principale
   Inspiré de InmoValoracion, adapté au marché français
   ================================================================ */

:root {
  --primary: #0b132b;
  --primary-light: #1c2541;
  --accent: #ff6600;
  --accent-hover: #e05a00;
  --accent-light: #fff3eb;
  --text-dark: #111318;
  --text-body: #3f4146;
  --text-light: #6b6f76;
  --bg-light: #f7f8fa;
  --bg-white: #ffffff;
  --border: #dedfe2;
  --radius: 8px;
  --radius-sm: 5px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: 'Rubik', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-body);
  line-height: 1.6;
  background-color: var(--bg-white);
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== HEADER ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; height: 72px;
}

.logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 1.3rem;
  color: var(--primary); letter-spacing: -0.5px;
  flex-shrink: 0;
}

.logo i { color: var(--accent); font-size: 1.5rem; }
.logo span { color: var(--accent); }

.nav-links {
  display: flex; align-items: center; gap: 20px;
  list-style: none; margin: 0; padding: 0;
}

.nav-links a {
  font-size: 0.88rem; font-weight: 500;
  color: var(--text-body); transition: var(--transition);
  position: relative; white-space: nowrap;
}

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

.nav-links a:not(.btn):not(.nav-pro)::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 2px; background: var(--accent);
  transition: var(--transition);
}

.nav-links a:not(.btn):not(.nav-pro):hover::after { width: 100%; }

.nav-links .btn { padding: 9px 18px; font-size: 0.85rem; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600; font-size: 0.9rem;
  transition: var(--transition); cursor: pointer;
  border: none; font-family: inherit; white-space: nowrap;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover {
  background: var(--accent-hover); color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 102, 0, 0.25);
}

.btn-outline {
  background: #fff; color: var(--primary);
  border: 1px solid #d1d3d6;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-lg { padding: 16px 32px; font-size: 1rem; }
.btn-white { background: white; color: var(--primary); }
.btn-white:hover { background: var(--accent-light); color: var(--accent); }

.mobile-toggle {
  display: none; background: none; border: none;
  font-size: 1.5rem; color: var(--primary);
  cursor: pointer; padding: 8px; flex-shrink: 0;
}

.nav-pro {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px !important;
  background: var(--accent-light);
  color: var(--accent) !important;
  border-radius: 6px; font-weight: 600; white-space: nowrap;
}
.nav-pro:hover { background: var(--accent); color: white !important; }
.nav-pro::after { display: none !important; }

/* ===== HERO ===== */
.hero {
  padding: 160px 0 80px;
  background: #ffffff;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: 3.2rem; font-weight: 700;
  color: var(--primary); line-height: 1.15;
  margin-bottom: 20px; letter-spacing: -1px;
}
.hero-content h1 span { color: var(--accent); }

.hero-content p {
  font-size: 1.15rem; color: #666a70;
  margin-bottom: 36px; max-width: 600px; line-height: 1.7;
}

.hero-buttons { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-buttons .btn { padding: 14px 28px; font-size: 1rem; }

.hero-stats {
  display: flex; gap: 40px; margin-top: 48px;
  padding-top: 32px; border-top: 1px solid var(--border);
}

.hero-stat h3 {
  font-size: 2rem; font-weight: 800;
  color: var(--primary); margin-bottom: 4px;
}

.hero-stat p {
  font-size: 0.85rem; color: var(--text-light);
  margin: 0; text-transform: uppercase; letter-spacing: 0.05em;
}

.hero-visual {
  display: flex; align-items: center; justify-content: center;
  position: relative;
}

.hero-visual-card {
  background: #f8fafb;
  border: 1px solid #d9dce0;
  border-radius: 10px;
  padding: 32px;
  width: 100%; max-width: 360px;
}

.hero-visual-card h4 {
  color: var(--primary); font-size: 1rem;
  font-weight: 600; margin-bottom: 16px;
  display: flex; align-items: center; gap: 8px;
}
.hero-visual-card h4 i { color: var(--accent); }

.hero-visual-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 0; border-bottom: 1px solid #e1e3e6;
  color: var(--text-body); font-size: 0.9rem;
}
.hero-visual-row:last-child { border-bottom: none; }
.hero-visual-row strong { color: var(--accent); font-weight: 700; }

/* ===== SECTIONS ===== */
.section { padding: 80px 0; }

.section-header {
  text-align: center; max-width: 700px;
  margin: 0 auto 56px;
}

.section-label {
  display: inline-block; font-size: 0.8rem;
  font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--accent); margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2.2rem; font-weight: 700;
  color: var(--text-dark); line-height: 1.2;
  margin-bottom: 16px; letter-spacing: -0.5px;
}

.section-header p {
  font-size: 1.05rem; color: var(--text-body); line-height: 1.7;
}

/* ===== SPLIT SECTIONS ===== */
.split-section {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
}
.split-section.reverse { direction: rtl; }
.split-section.reverse > * { direction: ltr; }

.split-content h2 {
  font-size: 1.8rem; font-weight: 700;
  color: var(--text-dark); line-height: 1.25; margin-bottom: 20px;
}
.split-content p {
  font-size: 1rem; color: var(--text-body);
  line-height: 1.7; margin-bottom: 16px;
}
.split-content .btn { margin-top: 12px; }

.split-image {
  background: var(--bg-light);
  border-radius: var(--radius);
  overflow: hidden; min-height: 320px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md); position: relative;
}
.split-image img {
  width: 100%; height: 100%; object-fit: cover;
  display: block; min-height: 320px;
  transition: transform 0.5s ease;
}
.split-image:hover img { transform: scale(1.05); }

/* ===== CTA BANNER ===== */
.cta-banner {
  background: linear-gradient(135deg, #ff6600 0%, #e05a00 100%);
  border-radius: var(--radius);
  padding: 64px 48px;
  text-align: center; color: white;
  position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ''; position: absolute; top: -50%; right: -20%;
  width: 400px; height: 400px;
  background: rgba(255,255,255,0.08); border-radius: 50%;
}
.cta-banner h2 {
  font-size: 2rem; font-weight: 700; margin-bottom: 16px;
  position: relative; z-index: 1;
}
.cta-banner p {
  font-size: 1.05rem; opacity: 0.9; margin-bottom: 32px;
  max-width: 600px; margin-left: auto; margin-right: auto;
  position: relative; z-index: 1;
}
.cta-banner .btn { position: relative; z-index: 1; }

/* ===== ARGUMENTS ===== */
.arguments-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
.argument-card {
  padding: 32px; border-radius: var(--radius);
  background: white; border: 1px solid var(--border);
  transition: var(--transition);
}
.argument-card:hover {
  box-shadow: var(--shadow-md); border-color: var(--accent);
}
.argument-card i {
  font-size: 2rem; color: var(--accent);
  margin-bottom: 16px; display: block;
}
.argument-card h3 {
  font-size: 1.1rem; font-weight: 700;
  color: var(--text-dark); margin-bottom: 12px;
}
.argument-card hr {
  border: none; border-top: 2px solid var(--accent);
  width: 40px; margin-bottom: 16px;
}
.argument-card p {
  font-size: 0.92rem; color: var(--text-body); line-height: 1.6;
}

/* ===== BLOG ===== */
.blog-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.blog-card {
  background: white; border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--border);
  transition: var(--transition);
}
.blog-card:hover {
  box-shadow: var(--shadow-md); transform: translateY(-4px);
}
.blog-card-image {
  height: 200px; overflow: hidden;
  background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
}
.blog-card-image img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s ease;
}
.blog-card:hover .blog-card-image img { transform: scale(1.08); }
.blog-card-body { padding: 24px; }
.blog-card-body h3 {
  font-size: 1rem; font-weight: 700;
  color: var(--text-dark); line-height: 1.4; margin-bottom: 8px;
}
.blog-card-body p { font-size: 0.85rem; color: var(--text-light); }

/* ===== DATA SECTION ===== */
.data-section {
  background: #f7f8fa;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px; color: var(--primary);
}
.data-section-inner {
  display: grid; grid-template-columns: 1.2fr 0.8fr;
  gap: 48px; align-items: center;
}
.data-logo {
  font-size: 1.5rem; font-weight: 800;
  color: var(--primary); margin-bottom: 24px;
  display: flex; align-items: center; gap: 10px;
}
.data-logo i { font-size: 1.8rem; }
.data-section h4 {
  font-size: 1.4rem; font-weight: 700;
  margin-bottom: 16px; color: var(--primary);
}
.data-section p {
  font-size: 0.95rem; line-height: 1.7;
  margin-bottom: 12px; color: var(--text-body);
}
.data-visual {
  text-align: center; display: flex;
  align-items: center; justify-content: center;
}
.data-visual img {
  max-width: 100%; height: auto;
  border-radius: var(--radius-sm); box-shadow: var(--shadow-md);
}

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }

.faq-question {
  width: 100%; background: none; border: none;
  padding: 24px 0; display: flex;
  justify-content: space-between; align-items: center;
  cursor: pointer; font-family: inherit;
  font-size: 1.05rem; font-weight: 600;
  color: var(--text-dark); text-align: left; gap: 16px;
}
.faq-question i {
  color: var(--accent); transition: var(--transition); font-size: 0.9rem;
}
.faq-item.active .faq-question i { transform: rotate(180deg); }

.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-answer-inner {
  padding-bottom: 24px; font-size: 0.95rem;
  color: var(--text-body); line-height: 1.7;
}
.faq-item.active .faq-answer { max-height: 500px; }

/* ===== FOOTER ===== */
.footer {
  background: var(--primary); color: rgba(255,255,255,0.7);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px; margin-bottom: 48px;
}
.footer-brand .logo { color: white; margin-bottom: 16px; }
.footer-brand p {
  font-size: 0.9rem; line-height: 1.7; margin-bottom: 16px;
}
.footer-brand .company-info {
  font-size: 0.85rem; line-height: 1.8; color: rgba(255,255,255,0.5);
}
.footer h4 {
  color: white; font-size: 0.95rem;
  font-weight: 700; margin-bottom: 20px;
}
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 10px; }
.footer ul a {
  font-size: 0.9rem; color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.footer ul a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 32px; display: flex;
  justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 16px; font-size: 0.85rem;
}
.footer-bottom-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-bottom-links a {
  color: rgba(255,255,255,0.5); transition: var(--transition);
}
.footer-bottom-links a:hover { color: var(--accent); }

/* ===== RESPONSIVE ===== */
@media (max-width: 968px) {
  .mobile-toggle { display: block; }
  .nav-links { display: none; }
  .nav-links.active {
    display: flex; flex-direction: column;
    align-items: stretch; position: absolute;
    top: 72px; left: 0; right: 0;
    background: white; padding: 20px 24px;
    box-shadow: var(--shadow-md); gap: 4px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.active li { width: 100%; }
  .nav-links.active a {
    display: block; width: 100%;
    padding: 10px 0; font-size: 0.95rem;
  }
  .nav-links.active a:not(.btn):not(.nav-pro)::after { display: none; }
  .nav-links.active .btn { width: 100%; margin-top: 8px; }

  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-content h1 { font-size: 2.2rem; }
  .hero-visual { display: none; }

  .steps-grid, .features-grid, .arguments-grid, .blog-grid {
    grid-template-columns: 1fr;
  }
  .split-section, .data-section-inner {
    grid-template-columns: 1fr; gap: 32px;
  }
  .split-section.reverse { direction: ltr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .hero { padding: 130px 0 60px; }
  .hero-content h1 { font-size: 1.8rem; }
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { width: 100%; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .section { padding: 64px 0; }
  .section-header h2 { font-size: 1.6rem; }
  .cta-banner { padding: 40px 24px; }
  .cta-banner h2 { font-size: 1.5rem; }
  .data-section { padding: 32px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .split-image { min-height: 220px; }
  .split-image img { min-height: 220px; }
  .blog-card-image { height: 180px; }
}