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

    body {
      font-family: 'Nunito', sans-serif;
      height: 100vh;
      overflow: hidden;
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      transition: background 1.5s ease;
      background: linear-gradient(to top, #1e3c72, #2a5298);
    }

    .background {
      position: absolute;
      width: 100%;
      height: 100%;
      overflow: hidden;
      top: 0;
      left: 0;
      z-index: -2;
      pointer-events: none;
    }

    .weather-particle {
      position: absolute;
      background: rgba(255, 255, 255, 0.8);
      border-radius: 50%;
    }

    .rain {
      width: 2px;
      height: 15px;
      background: rgba(174, 194, 224, 0.5);
      border-radius: 50%;
      animation: fall linear infinite;
    }

    .snow {
      width: 8px;
      height: 8px;
      background: rgba(255, 255, 255, 0.9);
      border-radius: 50%;
      animation: snowfall linear infinite;
    }

    .cloud {
      position: absolute;
      border-radius: 100px;
      animation: drift linear infinite;
    }

    @keyframes fall {
      0% {
        transform: translateY(-100px);
        opacity: 1;
      }
      100% {
        transform: translateY(100vh);
        opacity: 0.3;
      }
    }

    @keyframes snowfall {
      0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 1;
      }
      100% {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0.5;
      }
    }

    @keyframes drift {
      0% {
        transform: translateX(-100px);
      }
      100% {
        transform: translateX(120vw);
      }
    }

    .sun {
      position: absolute;
      width: 120px;
      height: 120px;
      background: radial-gradient(circle, #ffd700, #ffed4e);
      border-radius: 50%;
      top: 10%;
      right: 15%;
      box-shadow: 0 0 60px rgba(255, 215, 0, 0.6);
      animation: pulse 3s ease-in-out infinite;
    }

    @keyframes pulse {
      0%, 100% {
        transform: scale(1);
        opacity: 1;
      }
      50% {
        transform: scale(1.05);
        opacity: 0.9;
      }
    }

    .moon {
      position: absolute;
      width: 100px;
      height: 100px;
      background: radial-gradient(circle, #f4f4f4, #d4d4d4);
      border-radius: 50%;
      top: 10%;
      right: 15%;
      box-shadow: 0 0 40px rgba(244, 244, 244, 0.5);
    }

    .stars {
      position: absolute;
      width: 2px;
      height: 2px;
      background: white;
      border-radius: 50%;
      box-shadow: 0 0 3px white;
      animation: twinkle 2s ease-in-out infinite;
    }

    @keyframes twinkle {
      0%, 100% {
        opacity: 1;
      }
      50% {
        opacity: 0.3;
      }
    }

    .container {
      background: rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(15px);
      padding: 30px;
      border-radius: 20px;
      width: 90%;
      max-width: 400px;
      text-align: center;
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
      animation: fadeIn 1.5s ease;
      position: relative;
      z-index: 1;
    }

    @keyframes fadeIn {
      from {
        opacity: 0;
        transform: scale(0.95);
      }
      to {
        opacity: 1;
        transform: scale(1);
      }
    }

    h1 {
      font-size: 26px;
      margin-bottom: 10px;
    }

    .time-display {
      font-size: 18px;
      margin-bottom: 20px;
      opacity: 0.9;
    }

    .search {
      display: flex;
      gap: 10px;
      margin-bottom: 20px;
    }

    .search input {
      flex: 1;
      padding: 12px;
      border: none;
      border-radius: 8px;
      font-size: 16px;
      outline: none;
      background: rgba(255, 255, 255, 0.9);
      color: #333;
    }

    .search button {
      padding: 12px 18px;
      background: linear-gradient(to right, #0072ff, #00c6ff);
      color: #fff;
      border: none;
      border-radius: 8px;
      font-weight: bold;
      cursor: pointer;
      transition: transform 0.2s, background 0.3s;
    }

    .search button:hover {
      transform: scale(1.05);
    }

    .weather-info {
      font-size: 18px;
      line-height: 1.6;
    }

    .forecast {
      margin-top: 25px;
      display: flex;
      justify-content: space-between;
      gap: 10px;
      flex-wrap: wrap;
    }

    .day {
      background: rgba(255, 255, 255, 0.2);
      border-radius: 12px;
      padding: 10px;
      width: 60px;
      font-size: 14px;
      text-align: center;
      backdrop-filter: blur(5px);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }

    .day img {
      width: 40px;
      height: 40px;
    }

    .loading {
      font-style: italic;
    }

    .error {
      color: #ff6b6b;
      font-weight: bold;
    }

    .theme-toggle {
      margin-top: 15px;
    }

    .theme-toggle select {
      padding: 8px;
      border-radius: 6px;
      border: none;
      font-size: 14px;
      background: rgba(255, 255, 255, 0.9);
      color: #333;
    }

    @media (max-width: 500px) {
      h1 {
        font-size: 22px;
      }

      .search {
        flex-direction: column;
      }

      .search input,
      .search button {
        width: 100%;
      }

      .forecast {
        justify-content: center;
      }
    }