body {
      background: #e5e5e5;
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
      font-family: Arial, sans-serif;
    }

    /* Frame HP */
    .mobile-preview {
      position: relative;
      width: 390px;
      height: 800px;
      border-radius: 40px;
      background: #fff;
      overflow: hidden;
      box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    }

    /* Warna frame */
    .frame-metallic {
      border: 10px solid #b0b0b0;
      box-shadow: inset 0 0 5px rgba(255,255,255,0.5),
                  inset 0 0 10px rgba(0,0,0,0.2),
                  0 10px 40px rgba(0,0,0,0.4);
    }

    /* Tombol samping */
    .btn-power {
      position: absolute;
      right: -6px;
      top: 200px;
      width: 6px;
      height: 60px;
      background: #555;
      border-radius: 3px;
    }

    .btn-volume {
      position: absolute;
      left: -6px;
      top: 150px;
      width: 6px;
      height: 90px;
      background: #555;
      border-radius: 3px;
    }

    /* Notch */
    .notch {
      position: absolute;
      top: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 180px;
      height: 30px;
      background: #000;
      border-bottom-left-radius: 15px;
      border-bottom-right-radius: 15px;
      z-index: 5;
    }

    .camera {
      position: absolute;
      top: 8px;
      left: 50%;
      transform: translateX(-60px);
      width: 14px;
      height: 14px;
      background: #111;
      border-radius: 50%;
    }

    .speaker {
      position: absolute;
      top: 12px;
      left: 50%;
      transform: translateX(10px);
      width: 60px;
      height: 6px;
      background: #222;
      border-radius: 3px;
    }

    /* Isi layar */
    .screen {
      width: 100%;
      height: 100%;
      padding: 50px 20px 20px 20px;
      box-sizing: border-box;
      overflow-y: auto;
    }
    
    /* Silver */
.frame-silver {
  border: 10px solid #c0c0c0;
  box-shadow: inset 0 0 6px rgba(255,255,255,0.6),
              inset 0 0 12px rgba(0,0,0,0.25),
              0 12px 35px rgba(192,192,192,0.7);
}

/* Space Gray */
.frame-spacegray {
  border: 10px solid #4a4a4a;
  box-shadow: inset 0 0 6px rgba(255,255,255,0.4),
              inset 0 0 12px rgba(0,0,0,0.3),
              0 12px 35px rgba(74,74,74,0.7);
}

/* Gold */
.frame-gold {
  border: 10px solid #d4af37;
  box-shadow: inset 0 0 6px rgba(255,255,255,0.7),
              inset 0 0 12px rgba(0,0,0,0.3),
              0 12px 35px rgba(212,175,55,0.6);
}

/* Biru Laut */
.frame-blue-sea {
  border: 10px solid #1e3a8a;
  box-shadow: inset 0 0 6px rgba(255,255,255,0.5),
              inset 0 0 12px rgba(0,0,0,0.3),
              0 12px 35px rgba(30,58,138,0.7);
}

/* Biru Langit */
.frame-blue-sky {
  border: 10px solid #87ceeb;
  box-shadow: inset 0 0 6px rgba(255,255,255,0.6),
              inset 0 0 12px rgba(0,0,0,0.25),
              0 12px 35px rgba(135,206,235,0.7);
}

/* Merah */
.frame-red {
  border: 10px solid #dc2626;
  box-shadow: inset 0 0 6px rgba(255,255,255,0.5),
              inset 0 0 12px rgba(0,0,0,0.3),
              0 12px 35px rgba(220,38,38,0.6);
}

/* Ungu */
.frame-purple {
  border: 10px solid #7e22ce;
  box-shadow: inset 0 0 6px rgba(255,255,255,0.6),
              inset 0 0 12px rgba(0,0,0,0.3),
              0 12px 35px rgba(126,34,206,0.7);
}

/* Hijau */
.frame-green {
  border: 10px solid #16a34a;
  box-shadow: inset 0 0 6px rgba(255,255,255,0.5),
              inset 0 0 12px rgba(0,0,0,0.3),
              0 12px 35px rgba(22,163,74,0.7);
}