:root {
      --primary-navy: #08111e;
      --navy-card: #ffffff;
      --navy-light: #16263d;
      --accent-gold: #c5a365;
      --accent-gold-soft: #dfc89a;
      --cappuccino: #ece6dc;
      --cappuccino-dark: #8c8071;
      --soft-turquoise: #2a8b88;
      --text-white: #ffffff;
      --text-muted: #60788f;
      --text-dark: #17344e;
      --page-light: #f7fbff;
      --section-blue: #eef3f8;
      --line-blue: #d3dce5;
      --font-title: 'Cinzel', serif;
      --font-body: 'Plus Jakarta Sans', sans-serif;
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      -webkit-tap-highlight-color: transparent;
    }

    body {
      font-family: var(--font-body);
      background-color: var(--page-light);
      color: var(--text-dark);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

    .container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* HEADER */
    header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: color-mix(in srgb, var(--primary-navy) 98%, transparent);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.2);
      box-shadow: 0 8px 25px color-mix(in srgb, var(--primary-navy) 20%, transparent);
    }
    .navbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 10px 0;
    }

    /* 3D LOGO & YAZI */
    .brand-3d-wrapper {
      display: flex;
      align-items: center;
      gap: 12px;
      z-index: 1001;
      cursor: pointer;
    }
    .logo-3d-emblem {
      width: 55px;
      height: 55px;
      background: transparent;
      overflow: hidden;
      box-shadow: 
        -2px -2px 6px rgba(255, 255, 255, 0.08),
        4px 6px 14px rgba(0, 0, 0, 0.85);
      flex-shrink: 0;
      transition: var(--transition);
    }
    .logo-3d-emblem img {
      display: block;
      width: 100%;
      height: 100%;
      object-fit: contain;
    }
    .brand-title-group h1, .brand-heading {
      font-family: var(--font-title);
      font-size: 1.50rem;
      letter-spacing: 1px;
      color: #FFF;
      line-height: 1.1;
    }
    .brand-title-group span {
      font-size: 0.80rem;
      color: var(--accent-gold);
      letter-spacing: 0.5px;
      text-transform: uppercase;
      font-weight: 600;
      display: block;
      margin-top: 2px;
    }
	  
    /* MENÜ */
    .nav-center {
      display: flex;
      align-items: center;
      gap: 15px;
      list-style: none;
    }
    .nav-link {
      font-size: 0.82rem;
      font-weight: 500;
      color: var(--cappuccino);
    }
    .nav-link:hover {
      color: var(--accent-gold);
    }

    .nav-right {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    
    /* 4 DİL SEÇİCİ */
    .lang-switcher {
      display: flex;
      gap: 3px;
      background: rgba(255, 255, 255, 0.05);
      padding: 3px;
      border-radius: 6px;
      border: 1px solid rgba(197, 163, 101, 0.25);
    }
    .lang-btn {
      background: transparent;
      border: none;
      color: var(--cappuccino);
      font-size: 0.68rem;
      font-weight: 700;
      padding: 4px 6px;
      border-radius: 4px;
      cursor: pointer;
    }
    .lang-btn.active, .lang-btn:hover {
      background: var(--accent-gold);
      color: var(--primary-navy);
    }

    .btn-header-quote {
      background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-soft));
      color: var(--primary-navy);
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 0.82rem;
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .mobile-menu-toggle {
      display: none;
      background: transparent;
      border: none;
      color: var(--accent-gold);
      font-size: 1.5rem;
      cursor: pointer;
      z-index: 1001;
    }

    /* HERO */
    .hero {
      position: relative;
      min-height: 80vh;
      display: flex;
      align-items: center;
      background: linear-gradient(90deg, rgba(8, 17, 30, 0.96) 20%, rgba(8, 17, 30, 0.75) 60%, rgba(8, 17, 30, 0.4) 100%),
                  url('/1000002859.jpg') center/cover no-repeat;
      padding: 60px 0;
      border-bottom: 1px solid rgba(197, 163, 101, 0.15);
    }
    .hero-content {
      max-width: 650px;
    }
    .hero-subtitle {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: 2px;
      color: var(--soft-turquoise);
      text-transform: uppercase;
      margin-bottom: 12px;
    }
    .hero-title {
      font-family: var(--font-title);
      font-size: 2.8rem;
      line-height: 1.15;
      margin-bottom: 18px;
      color: #FFF;
    }
    .hero-title span {
      color: var(--accent-gold);
      font-style: italic;
    }
    .hero-desc {
      color: var(--cappuccino);
      font-size: 0.95rem;
      margin-bottom: 28px;
    }
    .hero-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }
    .btn-gold {
      background: var(--accent-gold);
      color: var(--primary-navy);
      padding: 12px 24px;
      border-radius: 30px;
      font-weight: 700;
      font-size: 0.88rem;
      text-align: center;
    }
    .btn-outline {
      border: 1px solid rgba(236, 230, 220, 0.3);
      color: var(--cappuccino);
      padding: 12px 24px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 0.88rem;
      text-align: center;
    }

    /* SAYAÇ */
    .stats-section {
      background: linear-gradient(135deg, var(--primary-navy), var(--navy-light));
      border-bottom: 1px solid rgba(255, 255, 255, 0.2);
      padding: 30px 0;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 15px;
      text-align: center;
    }
    .stat-number {
      font-family: var(--font-title);
      font-size: 2rem;
      color: var(--accent-gold);
      font-weight: 700;
    }
    .stat-label {
      color: #ffffff;
      font-size: 0.8rem;
      text-transform: uppercase;
    }

    /* BÖLÜM VE KART YAPILARI */
    .services-section {
      padding: 65px 0;
      background: #ffffff;
    }
    #completed-projects, #videos { background: var(--section-blue); }
    #ongoing-projects { background: #ffffff; }
    .section-head {
      text-align: center;
      margin-bottom: 40px;
    }
    .section-head h2 {
      font-family: var(--font-title);
      font-size: 2rem;
      color: var(--text-dark);
      margin-bottom: 10px;
    }
    .section-head p {
      color: var(--text-muted);
      font-size: 0.9rem;
    }
    .services-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }
    .service-card {
      background: var(--navy-card);
      border: 1px solid var(--line-blue);
      border-radius: 14px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
      cursor: pointer;
      box-shadow: 0 12px 32px rgba(23, 86, 133, 0.09);
    }
    .service-open {
      appearance: none;
      display: block;
      width: 100%;
      padding: 0;
      border: 0;
      background: transparent;
      color: inherit;
      cursor: pointer;
      text-align: left;
    }
    .service-card:hover {
      transform: translateY(-4px);
      border-color: var(--navy-light);
      box-shadow: 0 18px 38px rgba(23, 86, 133, 0.16);
    }
    .service-thumb {
      height: 180px;
      background-position: center;
      background-size: cover;
      position: relative;
    }
    .service-thumb img {
      display: block;
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .service-thumb::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 45%, rgba(13,84,140,0.34) 100%);
    }
    .service-body {
      padding: 16px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-body h3 {
      font-size: 0.95rem;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .service-body p {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }
    .service-tag {
      font-size: 0.7rem;
      color: var(--primary-navy);
      font-weight: 700;
      text-transform: uppercase;
    }

    /* ROZETLER */
    .tag-completed {
      color: #58C5C1;
      border: 1px solid rgba(42, 139, 136, 0.4);
      padding: 2px 8px;
      border-radius: 12px;
      background: rgba(42, 139, 136, 0.1);
      display: inline-block;
    }
    .tag-ongoing {
      color: #E5C378;
      border: 1px solid rgba(197, 163, 101, 0.4);
      padding: 2px 8px;
      border-radius: 12px;
      background: rgba(197, 163, 101, 0.1);
      display: inline-block;
    }

    /* VİDEO KATEGORİSİ */
    .video-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .video-card {
      background: var(--navy-card);
      border: 1px solid var(--line-blue);
      border-radius: 14px;
      overflow: hidden;
      box-shadow: 0 12px 32px rgba(23, 86, 133, 0.09);
    }
    .video-container {
      position: relative;
      padding-bottom: 56.25%; /* 16:9 oran */
      height: 0;
    }
    .video-container iframe {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      border: none;
    }
    .video-info {
      padding: 15px;
    }
    .video-info h3 {
      font-size: 0.95rem;
      color: var(--text-dark);
      margin-bottom: 6px;
    }

    /* MODAL GALERİ */
    .modal-overlay {
      position: fixed;
      inset: 0;
      background: color-mix(in srgb, var(--primary-navy) 90%, transparent);
      backdrop-filter: blur(8px);
      z-index: 2000;
      display: none;
      align-items: center;
      justify-content: center;
      padding: 20px;
    }
    .modal-overlay.active {
      display: flex;
    }
    .modal-content {
      background: #ffffff;
      border: 1px solid var(--line-blue);
      border-radius: 12px;
      max-width: 800px;
      width: 100%;
      padding: 30px;
      position: relative;
      max-height: 90vh;
      overflow-y: auto;
    }
    .modal-close {
      position: absolute;
      top: 15px;
      right: 20px;
      background: transparent;
      border: none;
      color: var(--primary-navy);
      font-size: 1.8rem;
      cursor: pointer;
    }
    .modal-title {
      font-family: var(--font-title);
      font-size: 1.4rem;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .modal-desc {
      color: var(--text-muted);
      font-size: 0.88rem;
      margin-bottom: 20px;
    }
    .modal-gallery-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
    }
    .modal-gallery-img {
      height: 220px;
      background-position: center;
      background-size: cover;
      border-radius: 8px;
      border: 1px solid rgba(197, 163, 101, 0.2);
    }
    .modal-gallery-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .detail-link {
      display: inline-block;
      margin-top: 12px;
      color: var(--primary-navy);
      font-size: .76rem;
      font-weight: 700;
    }

    .video-card video {
      display: block;
      width: 100%;
      aspect-ratio: 16 / 9;
      object-fit: cover;
      background: #050a12;
    }

    .content-detail {
      padding: 70px 0;
      min-height: 65vh;
    }
    .content-detail-card {
      background: #ffffff;
      border: 1px solid var(--line-blue);
      border-radius: 14px;
      padding: 30px;
      box-shadow: 0 14px 36px rgba(23, 86, 133, 0.1);
    }
    .content-detail-card h1 { font-family: var(--font-title); margin-bottom: 14px; }
    .content-detail-card p { color: var(--text-muted); margin-bottom: 18px; }
    .breadcrumb { color: var(--text-muted); font-size: .8rem; margin-bottom: 20px; }
    .detail-gallery { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-top:24px; }
    .detail-gallery img { width:100%; height:230px; object-fit:cover; border-radius:8px; }

    /* YETKİLİLER */
    .team-section {
      background: linear-gradient(135deg, var(--section-blue), #ffffff);
      padding: 60px 0;
      border-top: 1px solid rgba(197, 163, 101, 0.1);
      border-bottom: 1px solid rgba(197, 163, 101, 0.1);
    }
    .team-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
      max-width: 800px;
      margin: 0 auto;
    }
    .team-box {
      background: #ffffff;
      border: 1px solid var(--line-blue);
      border-radius: 14px;
      padding: 20px;
      display: flex;
      align-items: center;
      gap: 16px;
      box-shadow: 0 10px 28px rgba(23, 86, 133, 0.09);
    }
    .team-icon-circle {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      border: 2px solid var(--accent-gold);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: var(--primary-navy);
      flex-shrink: 0;
    }
    .team-icon-circle img { width:100%; height:100%; object-fit:cover; border-radius:50%; }
    .team-info h3, .team-info h4 {
      font-size: 1.05rem;
      color: var(--text-dark);
    }
    .team-info span {
      font-size: 0.75rem;
      color: var(--primary-navy);
      display: block;
      margin-bottom: 4px;
      font-weight: 600;
    }
    .team-info a {
      font-size: 0.82rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* TEKLİF FORMU */
    .contact-block {
      padding: 60px 0;
    }
    .contact-card {
      background: #ffffff;
      border: 1px solid var(--line-blue);
      border-radius: 16px;
      padding: 30px;
      max-width: 700px;
      margin: 0 auto;
      box-shadow: 0 16px 40px rgba(23, 86, 133, 0.1);
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 14px;
    }
    .form-group {
      margin-bottom: 14px;
    }
    .form-group label {
      display: block;
      font-size: 0.8rem;
      color: var(--text-dark);
      margin-bottom: 4px;
    }
    .form-input {
      width: 100%;
      background: #f5faff;
      border: 1px solid var(--line-blue);
      border-radius: 6px;
      padding: 10px 12px;
      color: var(--text-dark);
      font-family: inherit;
      font-size: 0.85rem;
      outline: none;
    }
    .hp-field { position:absolute !important; left:-10000px !important; width:1px; height:1px; overflow:hidden; }
    .notice { padding:12px 14px; border-radius:8px; margin:0 0 16px; font-size:.86rem; }
    .notice.success { background:rgba(42,139,136,.18); border:1px solid #2a8b88; }
    .notice.error { background:rgba(190,70,70,.16); border:1px solid #be4646; }
    .form-submit-btn {
      width: 100%;
      padding: 12px;
      background: var(--accent-gold);
      color: var(--primary-navy);
      font-weight: 700;
      border: none;
      border-radius: 6px;
      cursor: pointer;
    }

    /* FOOTER */
    footer {
      background: linear-gradient(135deg, var(--primary-navy), var(--navy-light));
      border-top: 1px solid rgba(255, 255, 255, 0.2);
      padding: 50px 0 20px;
      color: #ffffff;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
      gap: 30px;
      margin-bottom: 35px;
    }
    .footer-col h2, .footer-col h3, .footer-col h5 {
      color: #FFF;
      font-size: 0.9rem;
      margin-bottom: 14px;
      border-bottom: 1px solid rgba(197, 163, 101, 0.2);
      padding-bottom: 5px;
    }
    .footer-col p {
      font-size: 0.82rem;
      color: #dceefa;
    }
    .social-links { display:flex; gap:10px; margin-top:14px; flex-wrap:wrap; }
    .social-links a { color:var(--accent-gold); font-size:.82rem; }
    .footer-links-list {
      list-style: none;
    }
    .footer-links-list li {
      margin-bottom: 6px;
      font-size: 0.82rem;
    }
    .contact-details-list {
      list-style: none;
    }
    .contact-details-list li {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      margin-bottom: 10px;
      font-size: 0.82rem;
      color: #eaf5ff;
    }
    .contact-details-list li i {
      color: var(--accent-gold);
      margin-top: 3px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 15px;
      text-align: center;
      font-size: 0.72rem;
      color: #c2dff2;
    }

    .mobile-float-call {
      position: fixed;
      bottom: 20px;
      right: 20px;
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: #25D366;
      color: #FFF;
      display: none;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      z-index: 999;
      box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    }

    /* MOBİL VE TABLET UYUMLULUK */
    @media (max-width: 992px) {
      .services-grid, .video-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .nav-center {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        height: 100vh;
        background: var(--primary-navy);
        flex-direction: column;
        justify-content: center;
        gap: 20px;
        transition: 0.4s ease;
        border-left: 1px solid rgba(197, 163, 101, 0.2);
        box-shadow: -10px 0 20px rgba(0,0,0,0.6);
      }
      .nav-center.open {
        right: 0;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .btn-header-quote {
        display: none;
      }
      .mobile-float-call {
        display: flex;
      }
    }

    @media (max-width: 600px) {
      .brand-3d-wrapper {
        gap: 8px;
      }
      .logo-3d-emblem {
        width: 42px;
        height: 42px;
      }
      .brand-title-group h1 {
        font-size: 1.1rem;
      }
      .brand-title-group span {
        font-size: 0.52rem;
      }
      .hero {
        min-height: 70vh;
        padding: 40px 0;
      }
      .hero-title {
        font-size: 1.9rem;
      }
      .hero-actions a {
        width: 100%;
      }
      .services-grid, .video-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .contact-card {
        padding: 20px 16px;
      }
      .modal-gallery-grid {
        grid-template-columns: 1fr;
      }
      .detail-gallery { grid-template-columns: 1fr; }
    }