/* =========================================
   VARIABLES & DESIGN TOKENS (QUIET LUXURY)
   ========================================= */
:root {
    --color-bg: #f9f8f6;
    --color-surface: #ffffff;
    --color-text: #1a1a1a;
    --color-text-muted: #595959;
    --color-primary: #8c734b;
    --color-border: rgba(0, 0, 0, 0.08);
    --color-nav-bg: rgba(249, 248, 246, 0.95);

    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    --transition-fast: 0.3s ease;
    --transition-slow: 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    
    --container-width: 1400px;
    --section-padding: 120px 4vw;
}

[data-theme="dark"] {
    --color-bg: #121212;
    --color-surface: #1a1a1a;
    --color-text: #f0f0f0;
    --color-text-muted: #a0a0a0;
    --color-border: rgba(255, 255, 255, 0.1);
    --color-nav-bg: rgba(18, 18, 18, 0.95);
}

/* =========================================
   RESET & BASE STYLES
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--color-bg);
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.8s ease, color 0.8s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.15;
    color: var(--color-text);
    transition: color 0.8s ease;
}

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

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    width: 100%;
}

.section {
    padding: var(--section-padding);
}

.bg-white {
    background-color: var(--color-surface);
    transition: background-color 0.8s ease;
}

/* Typography Utilities */
.section-surtitle {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.section-title {
    font-size: 3.5rem;
    margin-bottom: 2.5rem;
    letter-spacing: -1px;
}

.italic {
    font-style: italic;
    color: var(--color-text-muted);
}

.lead {
    font-size: 1.4rem;
    color: var(--color-text);
    margin-bottom: 2rem;
    line-height: 1.6;
    font-weight: 300;
}

p {
    margin-bottom: 1.5rem;
}

p:last-child {
    margin-bottom: 0;
}

/* =========================================
   BUTTONS & LINKS
   ========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    border: 1px solid var(--color-text);
    transition: all var(--transition-fast);
    background: transparent;
    color: var(--color-text);
}

.btn:hover {
    background: var(--color-text);
    color: var(--color-bg);
}

.btn-primary {
    background: var(--color-text);
    color: var(--color-bg);
}

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

.btn-block {
    width: 100%;
}

.link-underline {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-text);
    padding-bottom: 5px;
    display: inline-block;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.link-underline:hover {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* =========================================
   NAVIGATION
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 2rem 4vw;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: padding var(--transition-fast), background var(--transition-fast), border-bottom var(--transition-fast);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    padding: 1.2rem 4vw;
    background: var(--color-nav-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    letter-spacing: 6px;
    font-weight: 600;
    color: var(--color-text);
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 3rem;
}

.nav-link {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text);
    font-weight: 500;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.btn-contact {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    padding: 0.75rem 1.5rem;
    transition: all var(--transition-fast);
}

.btn-contact:hover {
    border-color: var(--color-text);
}

.theme-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    margin-right: 0;
    color: var(--color-text);
    transition: color var(--transition-fast), transform var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* Mobile Menu */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 35px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 9999; /* Priority over everything */
    padding: 0;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    transition: transform 0.3s ease-in-out;
}

.menu-toggle.open span:first-child {
    transform: translateY(8px) rotate(45deg);
}
.menu-toggle.open span:last-child {
    transform: translateY(-8px) rotate(-45deg);
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--color-bg);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: right var(--transition-slow);
}

.mobile-menu.open {
    right: 0;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    text-align: center;
}

.mobile-nav-link {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.mobile-nav-link:hover {
    color: var(--color-primary);
}

.mobile-btn {
    font-family: var(--font-body);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    border: 1px solid var(--color-border);
    padding: 1rem 2rem;
    margin-top: 1rem;
    display: inline-block;
}

/* =========================================
   HERO SECTION
   ========================================= */
.hero {
    min-height: 100vh;
    padding-top: 12vh;
    padding-bottom: 5vh;
    display: flex;
    align-items: center;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: stretch;
}

.hero-text-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-right: 2rem;
}

.hero-title {
    font-size: 5rem;
    line-height: 1.05;
    margin-bottom: 2rem;
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 3rem;
    max-width: 450px;
}

.hero-image {
    position: relative;
    height: 70vh;
    min-height: 500px;
}

.image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: sepia(10%) contrast(95%);
}

.image-reveal {
    position: absolute;
    inset: 0;
    background: var(--color-bg);
    transform-origin: bottom;
    transition: transform 1.5s cubic-bezier(0.77, 0, 0.175, 1), background-color 0.8s ease;
}

.active .image-reveal, .active.fade-in .image-reveal {
    transform: scaleY(0);
}

/* =========================================
   ABOUT SECTION
   ========================================= */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
}

.about-text {
    max-width: 600px;
}

.about-text p {
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

.about-stats {
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-left: 1px solid var(--color-border);
    padding-left: 4rem;
    gap: 3rem;
}

.stat-item h3 {
    font-size: 3rem;
    font-family: var(--font-heading);
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-text-muted);
    margin-bottom: 0;
}

/* =========================================
   EXPERTISE SECTION
   ========================================= */
.expertise-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 4rem;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 2rem;
}

.expertise-header .section-title {
    margin-bottom: 0;
}

.expertise-list {
    display: flex;
    flex-direction: column;
}

.expertise-item {
    display: grid;
    grid-template-columns: 0.2fr 1fr 1fr;
    padding: 3rem 0;
    border-bottom: 1px solid var(--color-border);
    align-items: flex-start;
    transition: background var(--transition-fast);
}

.expertise-item:hover {
    background: var(--color-surface);
}

.expertise-number {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--color-primary);
    font-style: italic;
}

.expertise-item h3 {
    font-size: 2rem;
}

.expertise-item p {
    color: var(--color-text-muted);
    font-size: 1rem;
    line-height: 1.7;
}

/* =========================================
   TEAM SECTION
   ========================================= */
.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

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

.team-image {
    aspect-ratio: 3/4;
    overflow: hidden;
    margin-bottom: 1.5rem;
    position: relative;
}

.team-image img {
    width: 100%;
    height: 100%;
    filter: grayscale(100%);
    transition: filter var(--transition-slow), transform var(--transition-slow);
}

.team-card:hover .team-image img {
    filter: grayscale(0%);
    transform: scale(1.03);
}

.team-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.3rem;
}

.team-card p {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
}

/* =========================================
   CONTACT SECTION
   ========================================= */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: flex-start;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    margin-top: 3rem;
    border-top: 1px solid var(--color-border);
    padding-top: 3rem;
}

.info-block h4 {
    font-family: var(--font-body);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.info-block p {
    font-size: 1rem;
    color: var(--color-text);
}

.contact-form-wrapper {
    background: var(--color-surface);
    padding: 4rem;
    border: 1px solid var(--color-border);
    transition: background-color 0.8s ease;
}

.form-group {
    margin-bottom: 2.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.9rem;
    letter-spacing: 1px;
    transition: border-color var(--transition-fast), color 0.8s ease;
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

/* =========================================
   FOOTER
   ========================================= */
.footer {
    padding: 4rem 4vw 2rem;
    border-top: 1px solid var(--color-border);
    background-color: var(--color-bg);
    transition: background-color 0.8s ease;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4rem;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 2rem;
    letter-spacing: 4px;
    color: var(--color-text);
}

.footer-nav {
    display: flex;
    gap: 3rem;
}

.footer-nav a {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
}

.footer-nav a:hover {
    color: var(--color-text);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* =========================================
   ANIMATIONS
   ========================================= */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s ease, transform 1s ease;
}

.fade-in.active {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

/* =========================================
   RESPONSIVE DESIGN (MOBILE READY)
   ========================================= */
@media (max-width: 1024px) {
    .nav-links, .btn-contact, .desktop-only, .hide-on-mobile { 
        display: none !important; 
    }
    
    .menu-toggle { display: flex; }
    
    .hero-grid, .about-grid, .contact-grid { 
        grid-template-columns: 1fr; 
        gap: 3rem; 
    }
    .hero-image { height: 45vh; }
    
    .about-stats { 
        border-left: none; 
        padding-left: 0; 
        border-top: 1px solid var(--color-border); 
        padding-top: 3rem; 
        flex-direction: row; 
        justify-content: space-between; 
    }
    
    .expertise-item { 
        grid-template-columns: 1fr; 
        gap: 1rem; 
        padding: 2rem 0; 
    }
    
    .team-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-form-wrapper { padding: 2.5rem; }
}

@media (max-width: 768px) {
    body, html { overflow-x: hidden; } /* Prévient strictement le zoom horizontal */

    .section { padding: 80px 5vw; }
    
    .hero { padding-top: 120px; min-height: auto; }
    .hero-title { font-size: 2.5rem; margin-bottom: 1.5rem; line-height: 1.1; }
    .section-title { font-size: 2.2rem; line-height: 1.1; }
    .hero-image { height: 35vh; min-height: 250px; }
    
    .mobile-nav-link { font-size: 1.8rem; }
    
    .about-stats { 
        flex-direction: column; 
        gap: 2rem; 
        text-align: left; 
    }
    
    .expertise-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }
    .expertise-item h3 { font-size: 1.5rem; }
    
    .team-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    
    .contact-form-wrapper { padding: 1.5rem; }
    
    .footer-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 2.5rem;
    }
    .footer-nav {
        flex-direction: column;
        gap: 1.2rem;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}

/* =========================================
   OBSIDUS PERMANENT BADGE
   ========================================= */
.demo-pill-badge {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-weight: 700;
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #0F172A;
  background-color: #FFFFFF;
  padding: 3px 9px;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  line-height: 1.2;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12);
}

#obsidus-permanent-badge {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  pointer-events: auto;
  user-select: none;
}

.obsidus-badge-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 1rem;
  border-radius: 9999px;
  background-color: rgba(11, 11, 12, 0.95);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  overflow: hidden;
  text-decoration: none;
}

.obsidus-badge-link:hover {
  background-color: #141416;
  border-color: rgba(255, 255, 255, 0.45);
  box-shadow: 0 15px 45px rgba(0, 0, 0, 0.65);
  transform: translateY(-2px);
}

.obsidus-shimmer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  border-radius: 9999px;
}

.obsidus-shimmer-bar {
  width: 50%;
  height: 100%;
  background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.2), transparent);
  transform: skewX(-12deg) translateX(-150%);
  transition: transform 1s ease;
}

.obsidus-badge-link:hover .obsidus-shimmer-bar {
  transform: skewX(-12deg) translateX(300%);
}

.obsidus-logo-wrap {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.obsidus-logo-img {
  height: 15px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.9;
  transition: opacity 0.2s ease;
}

.obsidus-badge-link:hover .obsidus-logo-img {
  opacity: 1;
}

.obsidus-divider {
  width: 1px;
  height: 14px;
  background-color: rgba(255, 255, 255, 0.2);
}

.obsidus-text-wrap {
  display: flex;
  align-items: center;
}

@media (max-width: 480px) {
  #obsidus-permanent-badge {
    bottom: 1rem;
    right: 1rem;
  }
  .obsidus-badge-link {
    padding: 0.45rem 0.75rem;
    gap: 0.5rem;
  }
  .demo-pill-badge {
    font-size: 8.5px;
    padding: 2px 7px;
  }
}