:root {
    /* Couleurs */
    --bg-page: #f9fafb;
    /* VOTRE DEMANDE */
    --primary-green: #104130;
    /* Vert foncé premium */
    --accent-green: #2d8a5e;
    /* Vert plus vif pour les actions */
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --white: #ffffff;

    /* Variables de design */
    --radius: 12px;
    --shadow-soft: 0 10px 30px -5px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 20px 40px -5px rgba(0, 0, 0, 0.12);
    --font-head: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-page);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
}

/* --- Navbar --- */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid #e5e7eb;
}

.logo {
    font-family: var(--font-head);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-green);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo span {
    font-weight: 400;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.btn-cta {
    background: var(--primary-green);
    color: white;
    padding: 10px 24px;
    border-radius: 50px;
    /* Plus rond = plus moderne */
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: transform 0.2s;
}

.btn-cta:hover {
    transform: translateY(-2px);
}

/* --- Hero --- */
.hero {
    height: 75vh;
    background: url('/static/img/hero_bg.png') center/cover;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(16, 65, 48, 0.7));
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 20px;
}

.hero-content h1 {
    font-family: var(--font-head);
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-content p {
    font-size: 1.15rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.btn-primary {
    background: var(--accent-green);
    color: white;
    border: none;
    padding: 14px 32px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    margin-right: 15px;
}

.btn-outline {
    background: transparent;
    border: 2px solid white;
    color: white;
    padding: 12px 30px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-outline:hover {
    background: white;
    color: var(--primary-green);
}

/* --- Expertise Section (Onglets) --- */
.expertise {
    padding: 80px 10%;
    background: var(--bg-page);
}

.section-head {
    text-align: center;
    margin-bottom: 50px;
}

.section-head h2 {
    font-family: var(--font-head);
    font-size: 2.5rem;
    color: var(--primary-green);
    margin-bottom: 10px;
}

.section-head p {
    color: var(--text-muted);
}

.tabs-header {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}

.tab-btn {
    background: transparent;
    border: 1px solid #e5e7eb;
    padding: 12px 28px;
    border-radius: 50px;
    color: var(--text-muted);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    font-family: var(--font-body);
}

.tab-btn:hover {
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.tab-btn.active {
    background: var(--primary-green);
    border-color: var(--primary-green);
    color: white;
    box-shadow: 0 4px 12px rgba(16, 65, 48, 0.2);
}

/* Carte Contenu Onglet */
.content-card {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    box-shadow: var(--shadow-soft);
    /* Ombre douce sur fond blanc */
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.card-image {
    flex: 1;
    min-height: 400px;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-text {
    flex: 1;
    padding: 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.card-text h3 {
    font-family: var(--font-head);
    font-size: 2rem;
    color: var(--primary-green);
    margin-bottom: 20px;
}

.features {
    list-style: none;
    margin: 25px 0;
}

.features li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-main);
}

.features i {
    color: var(--accent-green);
}

.link-arrow {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 600;
    margin-top: 10px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* --- Section Devis (La partie verte) --- */
.quote-section {
    background-color: var(--primary-green);
    padding: 80px 5%;
    color: white;
    text-align: center;
}

.quote-header {
    margin-bottom: 40px;
}

.quote-header h2 {
    font-family: var(--font-head);
    font-size: 2.5rem;
}

/* La Carte Formulaire (Élément Central) */
.form-card {
    background: white;
    max-width: 850px;
    margin: 0 auto;
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow-soft);
    color: var(--primary-green);
    text-align: left;
}

.section-label {
    display: block;
    font-weight: 600;
    margin-top: 20px;
    margin-bottom: 10px;
}

.service-selector {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.option {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    padding: 20px;
    border: 1px solid #e5e7eb;
    border-radius: var(--radius);
    margin-right: 10px;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.option:last-child {
    margin-right: 0;
}

.option i {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--primary-green);
}

.option span {
    font-weight: 500;
    color: var(--text-main);
}

.option.active {
    border-color: var(--accent-green);
    box-shadow: 0 0 0 3px rgba(45, 138, 94, 0.2);
}

.input-group {
    margin-bottom: 20px;
    flex: 1;
}

.form-row {
    display: flex;
    gap: 20px;
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.highlight-val {
    font-weight: 600;
    color: var(--accent-green);
}

.styled-slider {
    width: 100%;
    margin-top: 10px;
}

.styled-slider::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent-green);
    border-radius: 50%;
    cursor: pointer;
}

.styled-slider::-webkit-slider-runnable-track {
    height: 6px;
    background: #e5e7eb;
    border-radius: 3px;
}

.select-wrapper {
    position: relative;
    display: inline-block;
    width: 100%;
}

.select-wrapper select {
    appearance: none;
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e5e7eb;
    border-radius: var(--radius);
    background-color: #f9fafb;
    font-family: var(--font-body);
    cursor: pointer;
}

.contact-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
}

.modern-input {
    flex: 1;
    padding: 12px;
    border: 1px solid #e5e7eb;
    border-radius: var(--radius);
    font-family: var(--font-body);
    background-color: #f9fafb;
}

.modern-input.full-width {
    width: 100%;
}

.btn-submit {
    background: var(--accent-green);
    color: white;
    border: none;
    padding: 16px 32px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    width: 100%;
    margin-top: 20px;
}

/* --- Portfolio Section --- */
.portfolio {
    padding: 80px 5%;
    background: var(--bg-page);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius);
    cursor: pointer;
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

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

.overlay-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(0deg, rgba(16, 65, 48, 0.9), rgba(16, 65, 48, 0));
    color: white;
    transform: translateY(100%);
    transition: transform 0.3s;
}

.portfolio-item:hover .overlay-info {
    transform: translateY(0);
}

.overlay-info .category {
    font-size: 0.85rem;
    opacity: 0.8;
    margin-bottom: 4px;
}

.overlay-info h3 {
    font-family: var(--font-head);
    font-size: 1.3rem;
}

.portfolio-footer {
    text-align: center;
    margin-top: 40px;
}

.btn-text {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    border-bottom: 2px solid transparent;
    padding-bottom: 5px;
    transition: border-color 0.3s;
}

/* Effet souligné sur les liens texte au survol */
.btn-text:hover {
    border-bottom-color: var(--accent-green);
}

/* --- Styles pour les Pages Internes (Services / Excellence) --- */

/* Petit Header pour les pages internes */
.page-header {
    height: 40vh;
    background-color: var(--primary-green);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
    /* Image de fond subtile et sombre par défaut */
    background-image: linear-gradient(rgba(16, 65, 48, 0.8), rgba(16, 65, 48, 0.8)), url('/static/img/hero_bg.png');
    background-size: cover;
    background-position: center;
}

.page-header h1 {
    font-family: var(--font-head);
    font-size: 3.5rem;
    margin-bottom: 10px;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Section Contenu Standard */
.page-content {
    padding: 80px 10%;
    background-color: var(--bg-page);
}

/* Layout en Z (Image / Texte alternés) pour Services */
.service-row {
    display: flex;
    align-items: center;
    gap: 60px;
    margin-bottom: 100px;
}

/* Inverser l'ordre une fois sur deux */
.service-row.reverse {
    flex-direction: row-reverse;
}

.service-img {
    flex: 1;
    height: 450px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.service-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

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

.service-desc {
    flex: 1;
}

.service-desc h2 {
    font-family: var(--font-head);
    font-size: 2.5rem;
    color: var(--primary-green);
    margin-bottom: 20px;
}

.service-desc p {
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.price-tag {
    display: inline-block;
    background: #e6f4ea;
    color: var(--primary-green);
    padding: 8px 16px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 20px;
}

/* Styles pour la page Excellence (Valeurs) */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.value-card {
    background: white;
    padding: 40px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow-soft);
    border-top: 4px solid var(--accent-green);
}

.value-card i {
    font-size: 2.5rem;
    color: var(--primary-green);
    margin-bottom: 20px;
}

.value-card h3 {
    font-family: var(--font-head);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

/* Responsive basique pour les pages internes */
@media (max-width: 900px) {
    .service-row,
    .service-row.reverse {
        flex-direction: column;
    }
    .service-img {
        width: 100%;
        height: 300px;
    }
}

/* --- Footer --- */
footer {
    text-align: center;
    padding: 30px 0;
    background: #f1f5f9;
    color: var(--text-muted);
}

/* -----------------------------
   Contact form (premium wide)
------------------------------ */
.contact-section{
  padding: 56px 16px;
  display:flex;
  justify-content:center;
}
.contact-card{
  width: min(1100px, 100%);
  background: rgba(255,255,255,.92);
  border-radius: 18px;
  padding: 28px 28px 22px 28px;
  border: 1px solid rgba(10,54,255,.14);
  box-shadow: 0 18px 50px rgba(0,0,0,.08);
  position: relative;
}
.contact-head h1{
  margin: 0 0 8px 0;
  font-size: 44px;
  letter-spacing: -0.02em;
}
.contact-head .muted{
  margin: 0 0 18px 0;
}
.contact-form label{
  font-weight: 600;
  color: #0b1b12;
}
.contact-grid{
  display:grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}
.contact-grid .field{ grid-column: span 2; }
.contact-grid .field-full{ grid-column: 1 / -1; }
.contact-actions{
  margin-top: 14px;
  display:flex;
  gap: 12px;
  align-items:center;
}

/* Mobile */
@media (max-width: 860px){
  .contact-head h1{ font-size: 34px; }
  .contact-grid{ grid-template-columns: 1fr; }
  .contact-grid .field{ grid-column: 1 / -1; }
  .contact-card{ padding: 22px 18px; }
}

/* Animated border (green premium) */
.animated-border{
  border-radius: 18px;
}
.animated-border::before{
  content:"";
  position:absolute;
  inset:-2px;
  border-radius: 20px;
  padding:2px;
  background: linear-gradient(90deg,
      rgba(25,255,140,.85),
      rgba(255,255,255,.85),
      rgba(0,220,120,.85),
      rgba(255,255,255,.85),
      rgba(25,255,140,.85)
    );
  background-size: 300% 300%;
  -webkit-mask:
      linear-gradient(#000 0 0) content-box,
      linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: borderFlow 7s linear infinite;
  pointer-events:none;
}
@keyframes borderFlow{
  0%{ background-position: 0% 50%; }
  100%{ background-position: 100% 50%; }
}