:root {
    --orange: #FF6B2B;
    --orange-light: #FF8F5A;
    --blue: #1A3CFF;
    --blue-light: #4D6FFF;
    --teal: #00C9A7;
    --yellow: #FFD23F;
    --dark: #0D0F1A;
    --dark2: #151726;
    --text: #E8EAF6;
    --muted: #8890B5;
    --white: #ffffff;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body { font-family: 'Outfit', sans-serif; background: var(--dark); color: var(--text); overflow-x: hidden; }

  /* ── ANNOTATION SYSTEM ── */
  .annotation {
    position: absolute; background: #FFD23F; color: #0D0F1A;
    font-size: 11px; font-weight: 600; padding: 4px 10px; border-radius: 20px;
    z-index: 100; white-space: nowrap; box-shadow: 0 2px 12px rgba(255,210,63,0.4);
    pointer-events: none;
  }
  .annotation::before { content: '✏️ '; }
  .section-note {
    background: rgba(255,210,63,0.12); border: 1px dashed rgba(255,210,63,0.4);
    border-radius: 8px; padding: 10px 14px; margin: 10px 20px;
    font-size: 12px; color: #FFD23F; text-align: center; letter-spacing: 0.3px;
  }

  /* ── NAV ── */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 60px; height: 100px;
    background: rgba(13,15,26,0.85); backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
  overflow: visible;
  }
  .nav-logo {
    display: flex; align-items: center; gap: 14px;
  }
  .logo-placeholder {
    width: 48px; height: 48px; border-radius: 10px;
    background: linear-gradient(135deg, var(--orange), var(--blue));
    display: flex; align-items: center; justify-content: center;
    font-family: 'Clash Display', sans-serif; font-size: 18px; font-weight: 700; color: #fff;
    position: relative;
  }
  .logo-label {
    font-family: 'Clash Display', sans-serif; font-size: 20px; font-weight: 700; color: #fff;
    letter-spacing: -0.5px;
  }
  .logo-label span { color: var(--orange); }
  .nav-links { display: flex; gap: 36px; align-items: center; }
  .nav-links a {
    color: #4DD9EC; text-decoration: none; font-size: 18px; font-weight: 500;
    transition: color .2s;
  }
  .nav-links a:hover { color: var(--white); }
  .nav-lang {
    display: flex; background: rgba(255,255,255,0.07); border-radius: 8px; overflow: hidden;
  }
  .lang-btn {
    padding: 6px 12px; font-size: 12px; font-weight: 600; cursor: pointer;
    transition: all .2s; color: var(--muted);
  }
  .lang-btn.active { background: var(--orange); color: #fff; }
  .nav-cta {
    background: var(--orange); color: #fff; border: none; padding: 10px 22px;
    border-radius: 8px; font-size: 14px; font-weight: 600; cursor: pointer;
    font-family: 'Outfit', sans-serif; transition: transform .15s, opacity .15s;
  }
  .nav-cta:hover { transform: translateY(-1px); opacity: .9; }

  /* ── HERO ── */
  .hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: space-between; gap: 30px;
    padding: 120px 60px 80px;
    position: relative; overflow: hidden;
  }
  .hero-bg {
    position: absolute; inset: 0; z-index: 0;
    background: radial-gradient(ellipse 70% 60% at 70% 50%, rgba(26,60,255,0.18) 0%, transparent 70%),
                radial-gradient(ellipse 50% 50% at 20% 80%, rgba(255,107,43,0.15) 0%, transparent 60%),
                radial-gradient(ellipse 40% 40% at 80% 20%, rgba(0,201,167,0.1) 0%, transparent 60%);
  }
  .hero-grid {
    position: absolute; inset: 0; z-index: 0;
    background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
  }
  .hero-content { position: relative; z-index: 1; max-width: 480px; flex-shrink: 0; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255,107,43,0.15); border: 1px solid rgba(255,107,43,0.3);
    border-radius: 30px; padding: 8px 16px; margin-bottom: 28px;
    font-size: 13px; color: var(--orange-light); font-weight: 500;
  }
  .badge-dot { width: 7px; height: 7px; background: var(--orange); border-radius: 50%; animation: pulse 2s infinite; }
  @keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(1.4)} }

  .hero h1 {
    font-family: 'Clash Display', sans-serif; font-size: clamp(30px, 3vw, 48px);
    font-weight: 700; line-height: 1.05; letter-spacing: -2px; margin-bottom: 24px;
  }
  .hero h1 .accent-orange { color: var(--orange); }
  .hero h1 .accent-teal { color: var(--teal); }
  .hero-sub {
    font-size: 18px; color: var(--muted); line-height: 1.7; margin-bottom: 40px; max-width: 540px;
  }
  .hero-stats {
    display: flex; gap: 40px; margin-bottom: 44px;
  }
  .stat { display: flex; flex-direction: column; }
  .stat-num { font-family: 'Clash Display', sans-serif; font-size: 36px; font-weight: 700; color: var(--white); }
  .stat-num span { color: var(--orange); }
  .stat-label { font-size: 12px; color: var(--muted); font-weight: 500; text-transform: uppercase; letter-spacing: 1px; margin-top: 2px; }
  .hero-btns { display: flex; gap: 14px; }
  .btn-primary {
    background: linear-gradient(135deg, var(--orange), #FF3D6B);
    color: #fff; border: none; padding: 14px 28px; border-radius: 10px;
    font-size: 15px; font-weight: 600; cursor: pointer; font-family: 'Outfit', sans-serif;
    transition: transform .15s, box-shadow .15s;
    box-shadow: 0 4px 24px rgba(255,107,43,0.4);
  }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(255,107,43,0.5); }
  .btn-secondary {
    background: rgba(255,255,255,0.07); color: var(--text); border: 1px solid rgba(255,255,255,0.12);
    padding: 14px 28px; border-radius: 10px; font-size: 15px; font-weight: 600;
    cursor: pointer; font-family: 'Outfit', sans-serif; transition: background .15s;
  }
  .btn-secondary:hover { background: rgba(255,255,255,0.12); }

  .hero-visual {
    position: relative;
    width: 480px; height: 360px; z-index: 1; flex-shrink: 0;
    display: flex; align-items: center; gap: 16px;
  }
  .hero-orb {
    width: 360px; height: 360px; border-radius: 50%;
    background: conic-gradient(from 0deg, var(--orange), var(--blue), var(--teal), var(--yellow), var(--orange));
    opacity: 0.12; filter: blur(60px);
    animation: rotate 12s linear infinite;
    position: absolute; right: 0;
  }
  @keyframes rotate { to { transform: rotate(360deg); } }
  .hero-cards {
    display: flex; flex-direction: column; justify-content: center; gap: 20px;
    position: relative; z-index: 3; flex-shrink: 0;
    height: 360px; width: 170px;
  }
  .mini-card {
    background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
    border-radius: 14px; padding: 12px 16px; backdrop-filter: blur(10px);
    font-size: 13px; font-weight: 500; width: 100%;
  }
  .mini-card.c1 { color: var(--orange-light); border-color: rgba(255,107,43,0.3); }
  .mini-card.c2 { color: var(--teal); border-color: rgba(0,201,167,0.3); }
  .mini-card.c3 { color: var(--yellow); border-color: rgba(255,210,63,0.3); }
  .mini-card.c4 { color: var(--blue-light); border-color: rgba(77,111,255,0.3); }

  /* ── SECTIONS COMMON ── */
  section { padding: 100px 60px; position: relative; }
  .section-label {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 2px;
    color: var(--orange); margin-bottom: 16px;
  }
  .section-label::before { content: ''; width: 24px; height: 2px; background: var(--orange); display: block; }
  .section-title {
    font-family: 'Clash Display', sans-serif; font-size: clamp(32px, 4vw, 52px);
    font-weight: 700; letter-spacing: -1px; line-height: 1.1; margin-bottom: 16px;
  }
  .section-sub { font-size: 17px; color: var(--muted); line-height: 1.7; max-width: 560px; }

  /* ── ABOUT ── */
  #about { background: var(--dark2); }
  .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; margin-top: 60px; }
  .about-text p { color: var(--muted); line-height: 1.8; margin-bottom: 16px; font-size: 16px; }
  .about-tags { display: flex; flex-wrap: nowrap; gap: 8px; margin-top: 24px; overflow-x: auto; }
  .tag {
    padding: 6px 12px; border-radius: 30px; font-size: 12px; font-weight: 600;
    border: 1.5px solid; white-space: nowrap;
  }
  .tag-orange { color: #fff;            border-color: var(--orange);      background: var(--orange); }
  .tag-teal   { color: var(--dark);     border-color: var(--teal);        background: var(--teal); }
  .tag-blue   { color: #fff;            border-color: var(--blue-light);  background: var(--blue-light); }
  .tag-yellow { color: var(--dark);     border-color: var(--yellow);      background: var(--yellow); }
  .tag-green  { color: var(--dark);     border-color: #4CAF50;            background: #4CAF50; }
  .about-visual {
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
    border-radius: 20px; padding: 40px; display: flex; flex-direction: column; gap: 20px;
  }
  .kpi-row { display: flex; align-items: center; gap: 16px; }
  .kpi-icon { width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 20px; flex-shrink: 0; }
  .kpi-info { display: flex; flex-direction: column; }
  .kpi-num { font-family: 'Clash Display', sans-serif; font-size: 32px; font-weight: 700; }
  .kpi-desc { font-size: 15px; color: #4DD9EC; }

  /* ── INVENTIONS GRID ── */
  #inventions { background: var(--dark); }
  .filter-bar { display: flex; gap: 10px; margin: 40px 0 36px; flex-wrap: wrap; }
  .filter-btn {
    padding: 8px 20px; border-radius: 30px; font-size: 13px; font-weight: 500; cursor: pointer;
    border: 1px solid rgba(255,255,255,0.12); background: transparent; color: var(--muted);
    font-family: 'Outfit', sans-serif; transition: all .2s;
  }
  .filter-btn.active, .filter-btn:hover { background: var(--orange); color: #fff; border-color: var(--orange); }
  .inventions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .invention-card {
    background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px; overflow: hidden; transition: transform .2s, border-color .2s;
    cursor: pointer;
  }
  .invention-card:hover { transform: translateY(-4px); border-color: rgba(255,107,43,0.4); }
  .card-img {
    height: 180px; display: flex; align-items: center; justify-content: center;
    font-size: 48px; position: relative;
  }
  .card-img.c-orange { background: linear-gradient(135deg, rgba(255,107,43,0.2), rgba(255,107,43,0.05)); }
  .card-img.c-blue   { background: linear-gradient(135deg, rgba(77,111,255,0.2), rgba(77,111,255,0.05)); }
  .card-img.c-teal   { background: linear-gradient(135deg, rgba(0,201,167,0.2), rgba(0,201,167,0.05)); }
  .card-img.c-yellow { background: linear-gradient(135deg, rgba(255,210,63,0.2), rgba(255,210,63,0.05)); }
  .card-badge-brevet {
    position: absolute; top: 12px; right: 12px;
    background: var(--orange); color: #fff; font-size: 10px; font-weight: 700;
    padding: 3px 10px; border-radius: 20px; text-transform: uppercase; letter-spacing: 0.5px;
  }
  .card-body { padding: 20px; }
  .card-body h3 { font-family: 'Clash Display', sans-serif; font-size: 17px; font-weight: 600; margin-bottom: 8px; }
  .card-body p { font-size: 13px; color: var(--muted); line-height: 1.6; margin-bottom: 14px; }
  .card-meta { display: flex; align-items: center; justify-content: space-between; }
  .card-cat { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }
  .card-arrow { color: var(--orange); font-size: 18px; }
  .load-more {
    display: block; margin: 40px auto 0;
    background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12);
    color: var(--text); padding: 14px 36px; border-radius: 10px; font-size: 15px;
    font-weight: 600; cursor: pointer; font-family: 'Outfit', sans-serif;
    transition: background .15s;
  }
  .load-more:hover { background: rgba(255,255,255,0.1); }

  /* ── ECOPRATIK ── */
  #ecopratik {
    background: linear-gradient(135deg, rgba(0,201,167,0.12), rgba(26,60,255,0.1));
    border-top: 1px solid rgba(0,201,167,0.15); border-bottom: 1px solid rgba(0,201,167,0.15);
  }
  .eco-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; margin-top: 60px; }
  .eco-product-card {
    background: rgba(255,255,255,0.05); border: 1px solid rgba(0,201,167,0.25);
    border-radius: 20px; overflow: hidden;
  }
  .eco-product-img {
    height: 220px; background: linear-gradient(135deg, rgba(0,201,167,0.25), rgba(0,201,167,0.05));
    display: flex; align-items: center; justify-content: center; font-size: 72px;
  }
  .eco-product-info { padding: 24px; }
  .eco-badge { display: inline-block; background: var(--teal); color: var(--dark); font-size: 11px; font-weight: 700; padding: 4px 12px; border-radius: 20px; margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
  .eco-product-info h3 { font-family: 'Clash Display', sans-serif; font-size: 22px; font-weight: 700; margin-bottom: 8px; }
  .eco-product-info p { color: var(--muted); font-size: 14px; line-height: 1.7; }
  .eco-cta-wrap { margin-top: 24px; }
  .eco-text .section-title { color: var(--teal); }
  .eco-text p { color: var(--muted); line-height: 1.8; margin-bottom: 16px; }
  .eco-logo-area {
    background: rgba(0,201,167,0.08); border: 1px dashed rgba(0,201,167,0.3);
    border-radius: 12px; padding: 20px; text-align: center; margin-bottom: 24px;
    font-size: 13px; color: var(--teal);
  }

  /* ── PROJETS ── */
  #projets { background: var(--dark2); }
  .projets-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 50px; }
  .projet-card {
    background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px; padding: 28px; position: relative; overflow: hidden;
    transition: border-color .2s, transform .2s;
  }
  .projet-card:hover { transform: translateY(-4px); border-color: rgba(77,111,255,0.5); }
  .projet-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--blue), var(--teal));
  }
  .projet-num { font-family: 'Clash Display', sans-serif; font-size: 48px; font-weight: 700; opacity: 0.08; position: absolute; right: 20px; top: 16px; }
  .projet-icon { font-size: 32px; margin-bottom: 16px; }
  .projet-card h3 { font-family: 'Clash Display', sans-serif; font-size: 19px; font-weight: 600; margin-bottom: 10px; }
  .projet-card p { font-size: 14px; color: var(--muted); line-height: 1.7; margin-bottom: 20px; }
  .projet-tag { display: inline-block; background: rgba(77,111,255,0.15); color: var(--blue-light); border: 1px solid rgba(77,111,255,0.3); border-radius: 20px; font-size: 11px; font-weight: 600; padding: 4px 12px; }
  .partner-callout {
    margin-top: 50px; background: rgba(26,60,255,0.12); border: 1px solid rgba(77,111,255,0.25);
    border-radius: 16px; padding: 30px 36px; display: flex; align-items: center; justify-content: space-between; gap: 30px;
  }
  .partner-callout h3 { font-family: 'Clash Display', sans-serif; font-size: 22px; font-weight: 700; margin-bottom: 6px; }
  .partner-callout p { color: var(--muted); font-size: 14px; }

  /* ── CONTACT ── */
  #contact { background: var(--dark); }
  .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; margin-top: 60px; }
  .contact-form { display: flex; flex-direction: column; gap: 16px; }
  .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
  .form-group { display: flex; flex-direction: column; gap: 6px; }
  .form-label { font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
  .form-input, .form-select, .form-textarea {
    background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px; padding: 12px 16px; color: var(--text);
    font-size: 14px; font-family: 'Outfit', sans-serif; outline: none;
    transition: border-color .2s;
  }
  .form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--orange); }
  .form-select option { background: var(--dark2); }
  .form-textarea { height: 120px; resize: vertical; }
  .form-submit {
    background: linear-gradient(135deg, var(--orange), #FF3D6B); color: #fff;
    border: none; padding: 14px 28px; border-radius: 10px; font-size: 15px; font-weight: 600;
    cursor: pointer; font-family: 'Outfit', sans-serif; margin-top: 8px;
    transition: transform .15s, box-shadow .15s;
    box-shadow: 0 4px 24px rgba(255,107,43,0.3);
  }
  .form-submit:hover { transform: translateY(-2px); }
  .contact-info { display: flex; flex-direction: column; gap: 24px; }
  .contact-info-title { font-family: 'Clash Display', sans-serif; font-size: 26px; font-weight: 700; margin-bottom: 8px; }
  .contact-info p { color: var(--muted); font-size: 15px; line-height: 1.8; }
  .target-list { list-style: none; display: flex; flex-direction: column; gap: 12px; margin-top: 20px; }
  .target-item {
    display: flex; align-items: center; gap: 14px;
    background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px; padding: 14px 18px;
  }
  .target-icon { font-size: 22px; }
  .target-text { font-size: 14px; font-weight: 500; }
  .target-sub { font-size: 12px; color: var(--muted); }

  /* ── FOOTER ── */
  footer {
    background: var(--dark2); border-top: 1px solid rgba(255,255,255,0.06);
    padding: 50px 60px 30px;
  }
  .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 60px; margin-bottom: 40px; }
  .footer-brand p { color: var(--muted); font-size: 14px; line-height: 1.7; margin-top: 12px; max-width: 300px; }
  .footer-col h4 { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: var(--muted); margin-bottom: 14px; }
  .footer-col a { display: block; color: var(--muted); text-decoration: none; font-size: 14px; margin-bottom: 8px; transition: color .2s; }
  .footer-col a:hover { color: var(--white); }
  .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; }
  .footer-bottom p { font-size: 12px; color: var(--muted); }
  .ecopratik-footer { font-family: 'Clash Display', sans-serif; font-weight: 700; color: var(--teal); }

  /* ── SCROLL REVEAL ── */
  .reveal { opacity: 0; transform: translateY(30px); transition: opacity .6s, transform .6s; }
  .reveal.visible { opacity: 1; transform: none; }

  /* ── MOBILE BANNER ── */
  @media (max-width: 900px) {
    nav { padding: 0 20px; }
    section { padding: 70px 20px; }
    .hero { padding: 100px 20px 60px; }
    .hero-visual { display: none; }
    .inventions-grid, .projets-grid { grid-template-columns: 1fr; }
    .about-grid, .eco-grid, .contact-grid, .footer-grid { grid-template-columns: 1fr; gap: 40px; }
    .form-row { grid-template-columns: 1fr; }
    footer { padding: 40px 20px 20px; }
  }