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

      body {
          font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
          background: #1a1a1a;
          color: #ffffff;
          padding-top: 70px;
          padding-bottom: 70px;
          min-height: 100%;
      }

      html,
      body {
          height: 100%;
      }

      /* Header Styles */
      .site-header {
          position: fixed;
          top: 0;
          left: 0;
          right: 0;
          background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
          border-bottom: 2px solid #FFD700;
          box-shadow: 0 4px 20px rgba(255, 215, 0, 0.2);
          z-index: 1000;
          height: 70px;
      }

      .container1 {
          max-width: 1400px;
          margin: 0 auto;
          padding: 0 20px;
          display: flex;
          align-items: center;
          justify-content: space-between;
          height: 100%;
      }

      .user-avatar {
          width: 35px;
          height: 35px;
          border-radius: 50%;
          object-fit: cover;
          margin-left: 8px;
      }

      .brand {
          font-size: 1.8em;
          font-weight: 800;
          background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
          -webkit-background-clip: text;
          -webkit-text-fill-color: transparent;
          background-clip: text;
          text-decoration: none;
          letter-spacing: 1px;
          transition: all 0.3s ease;
      }

      .brand:hover {
          transform: scale(1.05);
      }

      .user-info {
          display: flex;
          align-items: center;
          gap: 15px;
          color: #ffffff;
          font-size: 1em;
      }

      .user-info a {
          color: #FFD700;
          text-decoration: none;
          padding: 8px 20px;
          border: 2px solid #FFD700;
          border-radius: 25px;
          transition: all 0.3s ease;
          font-weight: bold;
      }

      .user-info a:hover {
          background: #FFD700;
          color: #000000;
          transform: scale(1.05);
      }

      .mobile-menu-toggle {
          display: none;
          background: #FFD700;
          color: #000000;
          border: none;
          font-size: 1.8em;
          width: 45px;
          height: 45px;
          border-radius: 10px;
          cursor: pointer;
          transition: all 0.3s ease;
          font-weight: bold;
      }

      .mobile-menu-toggle:hover {
          background: #FFA500;
          transform: rotate(90deg);
      }

      /* Desktop Navigation */
      nav#mobileNav {
          display: flex;
          gap: 5px;
          align-items: center;
          position: absolute;
          left: 50%;
          transform: translateX(-50%);
      }

      nav#mobileNav a {
          color: #ffffff;
          text-decoration: none;
          padding: 10px 20px;
          border-radius: 10px;
          transition: all 0.3s ease;
          font-weight: 600;
          font-size: 0.95em;
          white-space: nowrap;
      }

      nav#mobileNav a:hover {
          background: #FFD700;
          color: #000000;
          transform: translateY(-2px);
      }

      /* Mobile Bottom Navigation (Instagram-style) */
      .mobile-bottom-nav {
          display: none;
          position: fixed;
          bottom: 0;
          left: 0;
          right: 0;
          background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
          border-top: 2px solid #FFD700;
          padding: 10px 0;
          z-index: 1000;
          box-shadow: 0 -4px 20px rgba(255, 215, 0, 0.2);
      }

      .mobile-bottom-nav {
          display: flex;
          justify-content: space-evenly;
          align-items: center;
          max-width: 100%;
          padding: 8px 5px;
      }

      .mobile-bottom-nav a {
          display: flex;
          flex-direction: column;
          align-items: center;
          justify-content: center;
          gap: 4px;
          color: #888888;
          text-decoration: none;
          transition: all 0.3s ease;
          padding: 8px 10px;
          border-radius: 12px;
          flex: 1;
          max-width: 70px;
          min-height: 60px;
      }

      .mobile-bottom-nav a span {
          font-size: 0.75em;
          font-weight: 600;
      }

      .mobile-bottom-nav a:before {
          content: '';
          font-family: 'Font Awesome 6 Free';
          font-weight: 900;
          font-size: 1.5em;
      }

      .mobile-bottom-nav a:nth-child(1):before {
          content: '\f015';
          /* home */
      }

      .mobile-bottom-nav a:nth-child(2):before {
          content: '\f067';
          /* plus */
      }

      .mobile-bottom-nav a:nth-child(3):before {
          content: '\f002';
          /* search */
      }

      .mobile-bottom-nav a:nth-child(4):before {
          content: '\f007';
          /* user */
      }

      .mobile-bottom-nav a:nth-child(5):before {
          content: '\f0c9';
          /* bars */
      }

      .mobile-bottom-nav a.active,
      .mobile-bottom-nav a:hover {
          color: #FFD700;
          transform: scale(1.1);
      }

      /* Mobile Overlay */
      .mobile-overlay {
          display: none;
          position: fixed;
          top: 0;
          left: 0;
          right: 0;
          bottom: 0;
          background: rgba(0, 0, 0, 0.9);
          z-index: 999;
          opacity: 0;
          transition: opacity 0.3s ease;
      }

      .mobile-overlay.active {
          display: block;
          opacity: 1;
      }

      /* Flash Messages */
      .flash-message {
          position: fixed;
          top: 90px;
          right: 20px;
          left: auto;
          max-width: 400px;
          padding: 18px 25px;
          border-radius: 12px;
          font-size: 1em;
          font-weight: bold;
          z-index: 1001;
          box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
          animation: slideIn 0.5s ease, slideOut 0.5s ease 4.5s;
          display: none;
      }

      .flash-message.show {
          display: block;
      }

      @keyframes slideIn {
          from {
              transform: translateX(400px);
              opacity: 0;
          }

          to {
              transform: translateX(0);
              opacity: 1;
          }
      }

      @keyframes slideOut {
          from {
              transform: translateX(0);
              opacity: 1;
          }

          to {
              transform: translateX(400px);
              opacity: 0;
          }
      }

      .alert-success {
          background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
          border: 2px solid #FFD700;
          color: #FFD700;
      }

      .alert-danger {
          background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
          border: 2px solid #ff4444;
          color: #ff4444;
      }

      /* Content Area (Demo) */
      .content {
          max-width: 1400px;
          margin: 30px auto;
          padding: 20px;
      }

      .welcome-card {
          background: #000000;
          border: 2px solid #FFD700;
          border-radius: 20px;
          padding: 50px 40px;
          text-align: center;
          box-shadow: 0 10px 40px rgba(255, 215, 0, 0.2);
          max-width: 900px;
          margin: 0 auto;
      }

      .welcome-card h1 {
          background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
          -webkit-background-clip: text;
          -webkit-text-fill-color: transparent;
          background-clip: text;
          font-size: 2.5em;
          margin-bottom: 25px;
          line-height: 1.3;
      }

      .welcome-card p {
          color: #888888;
          font-size: 1.2em;
          line-height: 1.8;
          margin-bottom: 15px;
      }

      .welcome-card p:last-child {
          margin-bottom: 0;
      }

      /* Mobile Responsive */
      @media (max-width: 768px) {
          body {
              padding-top: 70px;
              padding-bottom: 75px;
          }

          .container1 {
              display: flex;
              justify-content: space-between;
              padding: 0 15px;
          }

          .mobile-menu-toggle {
              display: block;
          }

          .user-info {
              display: none;
          }

          nav#mobileNav {
              display: none;
              position: fixed;
              top: 70px;
              left: 0;
              right: 0;
              background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
              flex-direction: column;
              padding: 15px;
              gap: 8px;
              border-bottom: 2px solid #FFD700;
              box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
              transform: translateY(-100%);
              transition: transform 0.3s ease;
              z-index: 998;
              max-height: calc(100% - 145px);
              overflow-y: auto;
          }

          nav#mobileNav.active {
              display: flex;
              transform: translateY(0);
          }

          nav#mobileNav a {
              width: 100%;
              text-align: center;
              padding: 14px 20px;
              background: #1a1a1a;
              border: 2px solid #FFD700;
              border-radius: 10px;
              font-size: 1em;
          }

          .mobile-bottom-nav {
              display: flex;
          }

          .brand {
              font-size: 1.3em;
          }

          .content {
              padding: 15px;
          }

          .welcome-card {
              padding: 30px 20px;
          }

          .welcome-card h1 {
              font-size: 1.8em;
          }

          .welcome-card p {
              font-size: 1em;
          }

          .flash-message {
              right: 10px;
              left: 10px;
              top: 80px;
              padding: 15px 20px;
              font-size: 0.95em;
              max-width: none;
          }
      }

      @media (max-width: 480px) {
          .brand {
              font-size: 1.1em;
          }

          .mobile-menu-toggle {
              width: 40px;
              height: 40px;
              font-size: 1.5em;
          }

          .mobile-bottom-nav a span {
              font-size: 0.7em;
          }

          .mobile-bottom-nav a:before {
              font-size: 1.3em;
          }

          .welcome-card {
              padding: 20px;
          }

          .welcome-card h1 {
              font-size: 1.5em;
          }
      }

      /* Desktop - Center navigation better */
      @media (min-width: 1200px) {
          nav#mobileNav {
              gap: 15px;
          }

          nav#mobileNav a {
              padding: 12px 25px;
              font-size: 1em;
          }
      }