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

    :root {
      --cyan:   #00e5d4;
      --teal:   #0d9e95;
      --deep:   #0a6a78;
      --text:   #0e3d46;
      --muted:  #3a7a85;
      --white:  #f0fdfc;
      --glass:  rgba(255,255,255,0.18);
      --glass-border: rgba(255,255,255,0.35);
    }

    body {
      font-family: 'DM Sans', sans-serif;
      align-items: center;
      justify-content: center;
      background: #b2e8e4;
    }

    /* ── Ocean background ── */
    .ocean-bg {
      position: fixed; 
      inset: 0; 
      z-index: 0;
      background: linear-gradient(160deg, #a8e6e0 0%, #68c9c5 40%, #3aafa8 70%, #1c8a87 100%);
    }
    .wave {
      position: absolute; 
      width: 200%; 
      height: 200%;
      background: radial-gradient(ellipse 80% 50% at 60% 70%, rgba(0,229,212,0.18) 0%, transparent 70%);
      animation: drift 8s ease-in-out infinite alternate;
    }
    .wave:nth-child(2) {
      background: radial-gradient(ellipse 60% 40% at 30% 30%, rgba(255,255,255,0.12) 0%, transparent 60%);
      animation-duration: 11s; 
      animation-direction: alternate-reverse;
    }
    @keyframes drift { from { transform: translate(-5%,-5%) rotate(-2deg); } to { transform: translate(5%,5%) rotate(2deg); } }

    /* ── Services wrapper ── */
    .container-services {
      position: relative; 
      z-index: 1;
      border-radius: 20px;
      background: rgba(255,255,255,0.22);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border: 1.5px solid var(--glass-border);
      box-shadow: 0 24px 60px rgba(10,106,120,0.25), inset 0 1px 0 rgba(255,255,255,0.4);
      overflow: hidden;
      margin-bottom: 5px;
    }
    /* ── Card wrapper ── */
    .card-offres {
      position: relative; 
      z-index: 1;
      width: min(100vw, 960px);
      height: auto;
      border-radius: 20px;
      background: rgba(255,255,255,0.22);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border: 1.5px solid var(--glass-border);
      box-shadow: 0 24px 60px rgba(10,106,120,0.25), inset 0 1px 0 rgba(255,255,255,0.4);
      overflow: hidden;
      margin-bottom: 15px;
    }

    /* ── Header ── */
    .header-offres {
      background: var(--cyan);
      padding: 14px 28px;
      display: flex; align-items: center; gap: 12px;
    }
    .header h2 {
      font-family: 'Playfair Display', serif;
      font-size: 1.35rem;
      color: var(--deep);
      letter-spacing: .02em;
    }
    .header-dot { 
        width: 10px; 
        height: 10px; 
        border-radius: 50%; 
        background: var(--deep); 
        opacity: .5; 
    }

    /* ── Body-offres: two columns ── */
    .body-offres { 
        display: flex; 
        min-height: 200px; }

    /* ── Left: offres de services ── */
    .offres-services {
      width: 42%;
      padding: 28px 24px;
      border-right: 1px solid rgba(255,255,255,0.3);
      display: flex; 
      flex-direction: column; gap: 6px;
    }
    .offer-item {
      display: flex; align-items: center; gap: 12px;
      padding: 12px 14px;
      border-radius: 10px;
      cursor: pointer;
      transition: background .25s, transform .2s;
      text-decoration: none;
    }
    .offer-item:hover { background: rgba(255,255,255,0.25); transform: translateX(4px); }
    .offer-item.active {
      background: rgba(0,229,212,0.30);
      border-left: 3px solid var(--cyan);
      padding-left: 11px;
    }
    .offer-bullet {
      width: 7px; 
      height: 7px; 
      border-radius: 50%;
      background: var(--deep); 
      flex-shrink: 0;
      transition: background .25s, transform .25s;
    }
    .offer-item.active .offer-bullet { background: var(--cyan); transform: scale(1.4); }
    .offer-label {
      font-size: .92rem; font-weight: 500;
      color: var(--deep);
      text-decoration: underline;
      text-underline-offset: 3px;
      text-decoration-color: var(--teal);
    }
    .offer-item.active .offer-label { 
        text-decoration: none; 
        color: var(--deep); 
        font-weight: 600; }

    /* ── Right: detail panel ── */
    .detail-panel {
      flex: 1;
      padding: 30px 26px;
      position: relative;
      overflow: hidden;
    }

    /* Static detail (when offer selected) */
    .detail-content {
      display: none;
      animation: fadeSlideIn .38s cubic-bezier(.22,1,.36,1) forwards;
    }
    .detail-content.visible { display: block; }
    @keyframes fadeSlideIn {
      from { opacity: 0; transform: translateY(12px); }
      to   { opacity: 1; transform: translateY(0); }
    }
    .detail-content h3 {
      font-family: 'Playfair Display', serif;
      font-size: 1.15rem;
      color: var(--deep);
      margin-bottom: 12px;
      padding-bottom: 8px;
      border-bottom: 2px solid var(--cyan);
      display: inline-block;
    }
    .detail-content p {
      font-size: .88rem;
      line-height: 1.75;
      color: var(--text);
      margin-bottom: 14px;
    }
    .detail-content ul {
      list-style: none;
      display: flex; flex-direction: column; gap: 8px;
    }
    .detail-content ul li {
      font-size: .85rem;
      color: var(--muted);
      display: flex; align-items: flex-start; gap: 8px;
    }
    .detail-content ul li::before {
      content: '›'; color: var(--cyan); font-size: 1.1rem; line-height: 1.2; flex-shrink: 0;
    }

    /* ── Auto-scroll carousel (no selection) ── */
    .scroll-carousel {
      position: absolute; inset: 0;
      overflow: hidden;
      display: flex; align-items: center; justify-content: center;
    }
    .scroll-carousel.hidden { display: none; }
    .scroll-track {
      display: flex; flex-direction: column;
      animation: scrollUp 14s linear infinite;
    }
    .scroll-track:hover { animation-play-state: paused; }
    @keyframes scrollUp {
      0%   { transform: translateY(0); }
      100% { transform: translateY(-50%); }
    }
    .scroll-item {
      padding: 18px 4px;
      border-bottom: 1px solid rgba(255,255,255,0.25);
    }
    .scroll-item h4 {
      font-family: 'Playfair Display', serif;
      font-size: 1rem; color: var(--deep);
      margin-bottom: 6px;
    }
    .scroll-item p {
      font-size: .82rem; color: var(--muted); line-height: 1.6;
    }

    /* fade edges */
    .detail-panel::before, .detail-panel::after {
      content: ''; position: absolute; left: 0; right: 0; z-index: 2;
      pointer-events: none; height: 36px;
    }
    .detail-panel::before { top: 0; background: linear-gradient(to bottom, rgba(200,240,238,0.5), transparent); }
    .detail-panel::after  { bottom: 0; background: linear-gradient(to top,   rgba(180,230,228,0.5), transparent); }

    /* close button */
    .close-btn {
      display: none;
      position: absolute; top: 12px; right: 14px;
      background: none; border: none; cursor: pointer;
      font-size: 1rem; color: var(--muted);
      transition: color .2s;
    }
    .close-btn:hover { color: var(--deep); }
    .close-btn.visible { display: block; }