body {
      min-height: 100vh;
      background: #0a0e14;
      color: #e0e7ff;
      font-family: system-ui, sans-serif;
      
      display: flex;
      justify-content: center;
      align-items: center;
    }

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

.error-message {
      color: #f85149;
      font-size: 0.95rem;
      margin-top: 1rem;
      min-height: 1.2rem;
      display: none;
    }

.input-group {
      position: relative;
      margin-bottom: 1.2rem;
    }

.icon {
      position: absolute;
      left: 1rem;
      top: 50%;
      transform: translateY(-50%);
      width: 20px;
      height: 20px;
      color: #8b949e;
      pointer-events: none;
    }

input {
      width: 100%;
      height: 44px;
      padding: 0 1rem 0 2.8rem;
      background: #0d1117;
      border: 1px solid #30363d;
      border-radius: 6px;
      color: #e6edf3;
      font-size: 1rem;
      line-height: 1.4;
    }

button {
      width: 100%;
      padding: 0.95rem;
      background: #238636;
      color: white;
      border: none;
      border-radius: 6px;
      font-size: 1.05rem;
      cursor: pointer;
      margin-top: 0.8rem;
    }