:root {
      --primary: #6366f1;
      --primary-dark: #4f46e5;
      --purple: #8b5cf6;
      --cyan: #06b6d4;
      --bg-gradient: linear-gradient(135deg, #eef2ff 0%, #f5f3ff 50%, #f0f9ff 100%);
      --text-main: #334155;
      --text-muted: #64748b;
      --border-color: #e0e7ff;
      --card-bg: rgba(255, 255, 255, 0.9);
      --shadow: 0 10px 25px -5px rgba(99, 102, 241, 0.1), 0 8px 10px -6px rgba(99, 102, 241, 0.1);
    }

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

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      background: var(--bg-gradient);
      color: var(--text-main);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    /* Header */
    header {
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 40;
      box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    }

    .header-container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 1rem;
      height: 70px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      cursor: pointer;
      flex-shrink: 0;
    }

    .logo-icon {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      background: #ffffff;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: none;
      border: none;
      transition: transform 0.2s;
    }

    .logo-icon img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    .logo-area:hover .logo-icon {
      transform: scale(1.05);
    }

    .logo-text h1 {
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.025em;
      color: #1e293b;
    }

    .logo-text h1 span {
      background: linear-gradient(to right, var(--primary), var(--purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .logo-text span.sub {
      font-size: 0.6rem;
      font-weight: 700;
      color: #818cf8;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      display: block;
    }

    /* Header Navigation Links */
    .header-nav {
      display: none;
      align-items: center;
      gap: 0.5rem; /* Butonların araları açıldı */
      background: #eef2ff66;
      padding: 0.4rem 0.6rem;
      border-radius: 9999px;
      border: 1px solid var(--border-color);
    }

    @media (min-width: 900px) {
      .header-nav {
        display: flex;
      }
    }

    .nav-link {
      padding: 0.5rem 1.15rem;
      border-radius: 9999px;
      font-size: 0.9rem; /* Font boyutu büyütüldü */
      font-weight: 700;
      color: var(--text-muted);
      text-decoration: none;
      transition: all 0.2s;
      white-space: nowrap;
    }

    .nav-link:hover {
      color: var(--primary);
      background: rgba(255, 255, 255, 0.7);
    }

    .nav-link.active {
      background: linear-gradient(135deg, var(--primary), var(--purple));
      color: white;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    }

    /* Search Bar */
    .search-box {
      position: relative;
      width: 100%;
      max-width: 220px;
      display: none;
    }

    @media (min-width: 640px) {
      .search-box {
        display: block;
      }
    }

    @media (min-width: 1100px) {
      .search-box {
        max-width: 260px;
      }
    }

    .search-box span {
      position: absolute;
      left: 1rem;
      top: 50%;
      transform: translateY(-50%);
      font-size: 0.85rem;
    }

    .search-box input {
      width: 100%;
      padding: 0.6rem 1rem 0.6rem 2.5rem;
      background: #eef2ff66;
      border: 2px solid var(--border-color);
      border-radius: 9999px;
      font-size: 0.85rem;
      color: var(--text-main);
      outline: none;
      transition: all 0.2s;
    }

    .search-box input:focus {
      background: white;
      border-color: var(--purple);
      box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
    }

    .search-box input::placeholder {
      color: #a5b4fc;
    }

    /* Main Wrapper & Layout */
    .main-wrapper {
      max-width: 1280px;
      margin: 0 auto;
      padding: 1rem;
      flex: 1;
      width: 100%;
    }

    @media (min-width: 768px) {
      .main-wrapper {
        padding: 1.5rem;
      }
    }

    .layout-grid {
      display: flex;
      flex-direction: column;
      gap: 1rem;
      align-items: stretch;
    }

    @media (min-width: 768px) {
      .layout-grid {
        flex-direction: row;
        align-items: flex-start;
        gap: 1.5rem;
      }
    }

    /* Desktop Sidebar */
    aside {
      display: none;
      width: 260px;
      flex-shrink: 0;
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      padding: 1rem;
      border-radius: 1.25rem;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow);
      position: sticky;
      top: 90px;
    }

    @media (min-width: 768px) {
      aside {
        display: block;
      }
    }

    .sidebar-title {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      margin-bottom: 0.75rem;
      padding: 0 0.5rem;
    }

    .sidebar-title h2 {
      font-size: 0.7rem;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--text-muted);
    }

    .category-list {
      display: flex;
      flex-direction: column;
      gap: 0.35rem;
    }

    .cat-btn {
      width: 100%;
      display: flex;
      align-items: center;
      gap: 0.65rem;
      padding: 0.6rem 0.85rem;
      border-radius: 0.85rem;
      border: none;
      background: transparent;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
      cursor: pointer;
      transition: all 0.2s;
      text-align: left;
    }

    .cat-btn:hover {
      background: #eef2ffb3;
      color: var(--primary);
    }

    .cat-btn.active {
      background: linear-gradient(135deg, var(--primary), var(--purple));
      color: white;
      font-weight: 700;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    }

    .cat-icon {
      width: 28px;
      height: 28px;
      border-radius: 0.6rem;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--border-color);
      color: var(--primary);
      font-size: 0.85rem;
    }

    .cat-btn.active .cat-icon {
      background: rgba(255, 255, 255, 0.2);
      color: white;
    }

    /* Mobile Category Dropdown */
    .mobile-category-container {
      position: relative;
      display: block;
      margin-bottom: 0.75rem;
    }

    @media (min-width: 768px) {
      .mobile-category-container {
        display: none;
      }
    }

    .mobile-cat-toggle {
      width: 100%;
      height: 52px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 1rem;
      background: white;
      border: 1px solid var(--border-color);
      border-radius: 1rem;
      font-weight: 700;
      font-size: 0.85rem;
      color: var(--primary);
      box-shadow: 0 2px 8px rgba(99, 102, 241, 0.06);
      cursor: pointer;
    }

    .mobile-dropdown-menu {
      position: absolute;
      top: calc(100% + 0.4rem);
      left: 0;
      right: 0;
      background: white;
      border-radius: 1rem;
      border: 1px solid var(--border-color);
      box-shadow: 0 10px 25px rgba(0,0,0,0.1);
      padding: 0.5rem;
      display: none;
      z-index: 30;
    }

    .mobile-dropdown-menu.show {
      display: flex;
      flex-direction: column;
      gap: 0.25rem;
    }

    /* Content Area */
    main {
      flex: 1;
      width: 100%;
      min-width: 0;
    }

    .content-header {
      background: rgba(255, 255, 255, 0.7);
      backdrop-filter: blur(8px);
      padding: 0.5rem 1rem;
      height: 52px;
      border-radius: 1rem;
      border: 1px solid var(--border-color);
      margin-bottom: 1rem;
      box-shadow: 0 2px 8px rgba(99, 102, 241, 0.04);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    @media (min-width: 768px) {
      .content-header {
        height: auto;
        padding: 1.25rem 1.5rem;
        border-radius: 1.25rem;
        margin-bottom: 1.5rem;
      }
    }

    .content-header h1 {
      font-size: 1rem;
      font-weight: 800;
      color: #1e293b;
      display: flex;
      align-items: center;
      gap: 0.4rem;
    }

    @media (min-width: 768px) {
      .content-header h1 {
        font-size: 1.5rem;
        gap: 0.75rem;
      }
    }

    .game-count {
      font-size: 0.65rem;
      font-weight: 700;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 0.25rem;
    }

    @media (min-width: 768px) {
      .game-count {
        font-size: 0.75rem;
        margin-top: 0.25rem;
      }
    }

    /* Games Grid */
    .games-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 0.75rem;
    }

    @media (min-width: 640px) {
      .games-grid {
        gap: 1rem;
      }
    }

    @media (min-width: 1024px) {
      .games-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.25rem;
      }
    }

    /* Game Card */
    .game-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      border-radius: 1rem;
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(99, 102, 241, 0.05);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      text-decoration: none;
      color: inherit;
    }

    .game-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -6px rgba(139, 92, 246, 0.15);
      border-color: #c7d2fe;
    }

    .card-image-wrapper {
      position: relative;
      height: 120px;
      flex-shrink: 0;
      background: #eef2ff;
      overflow: hidden;
    }

    @media (min-width: 640px) {
      .card-image-wrapper {
        height: 150px;
      }
    }

    .card-image-wrapper img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .game-card:hover .card-image-wrapper img {
      transform: scale(1.08);
    }

    .card-badge-category {
      position: absolute;
      top: 0.5rem;
      left: 0.5rem;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(6px);
      color: var(--primary-dark);
      font-size: 0.6rem;
      font-weight: 700;
      padding: 0.2rem 0.5rem;
      border-radius: 9999px;
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      gap: 0.25rem;
    }

    @media (min-width: 640px) {
      .card-badge-category {
        font-size: 0.7rem;
        padding: 0.3rem 0.6rem;
        top: 0.6rem;
        left: 0.6rem;
      }
    }

    .card-badge-new {
      position: absolute;
      bottom: 0.5rem;
      right: 0.5rem;
      background: linear-gradient(135deg, #fbbf24, #f97316);
      color: white;
      font-size: 0.55rem;
      font-weight: 800;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      padding: 0.2rem 0.45rem;
      border-radius: 9999px;
      box-shadow: 0 2px 6px rgba(249, 115, 22, 0.3);
    }

    @media (min-width: 640px) {
      .card-badge-new {
        font-size: 0.65rem;
        padding: 0.25rem 0.55rem;
        bottom: 0.6rem;
        right: 0.6rem;
      }
    }

    .card-body {
      padding: 0.75rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    @media (min-width: 640px) {
      .card-body {
        padding: 1.25rem;
      }
    }

    .card-body h3 {
      font-size: 0.85rem;
      font-weight: 800;
      color: #1e293b;
      margin-bottom: 0.35rem;
      line-height: 1.25;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    @media (min-width: 640px) {
      .card-body h3 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
      }
    }

    .game-card:hover .card-body h3 {
      color: var(--primary);
    }

    .card-body p {
      font-size: 0.68rem;
      color: var(--text-muted);
      line-height: 1.4;
      margin-bottom: 0.85rem;
      flex: 1;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    @media (min-width: 640px) {
      .card-body p {
        font-size: 0.75rem;
        line-height: 1.5;
        margin-bottom: 1.25rem;
      }
    }

    .play-btn {
      width: 100%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.35rem;
      background: linear-gradient(135deg, var(--primary), var(--purple), var(--cyan));
      color: white;
      font-size: 0.7rem;
      font-weight: 800;
      padding: 0.6rem 0.75rem;
      border-radius: 0.75rem;
      box-shadow: 0 3px 10px rgba(99, 102, 241, 0.2);
      transition: all 0.2s;
    }

    @media (min-width: 640px) {
      .play-btn {
        font-size: 0.75rem;
        padding: 0.75rem 1rem;
        border-radius: 0.85rem;
      }
    }

    .game-card:hover .play-btn {
      opacity: 0.95;
      box-shadow: 0 5px 14px rgba(99, 102, 241, 0.35);
    }

    /* Empty State */
    .empty-state {
      display: none;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 3rem 1rem;
      background: rgba(255, 255, 255, 0.8);
      border-radius: 1.25rem;
      border: 2px dashed #c7d2fe;
      text-align: center;
    }

    .empty-icon {
      width: 60px;
      height: 60px;
      border-radius: 50%;
      background: #eef2ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 0.75rem;
    }

    .empty-state h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 0.25rem;
    }

    .empty-state p {
      font-size: 0.8rem;
      color: var(--primary);
    }

    /* Footer */
    footer {
      margin-top: auto;
      padding: 1.5rem 0;
      text-align: center;
      font-size: 0.7rem;
      color: var(--primary);
      font-weight: 600;
    }