:root {
  --bg-color: #ffffff;
  --text-color: #000000;
  --card-bg: #ffffff;
  --card-shadow: rgba(0, 0, 0, 0.1);
  --button-bg: #dddddd;
  --button-text: #000000;
  --button-hover: #cccccc;
  --active-glow: #444;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', sans-serif;
}

body {
  background: var(--bg-color);
  color: var(--text-color);
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: 0.3s ease;
}

.title {
  font-size: 3rem;
  /* margin-bottom: 30px; */
  margin: 0 auto;
}

.container {
  display: flex;
  text-align: center;
  flex-direction: column;
  justify-content: center;
}

/* Digital Clock Box */
.clock-box {
  padding: 40px 60px;
  background: var(--card-bg);
  box-shadow: 0 0 50px var(--card-shadow);
  border-radius: 16px;
  min-width: 300px;
  transition: 0.3s ease;
}

#clock {
  font-size: 4rem;
  font-weight: bold;
  margin-bottom: 10px;
}

#date {
  font-size: 1.5rem;
}

/* Analog Clock */
.clock {
  width: 400px;
  height: 400px;
  position: relative;
  background: radial-gradient(circle, #5454f5, rgb(3, 6, 167));
  box-shadow: 0 0 105px 0px #51b1c2;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}


.number {
  transform: rotate(calc(30deg * var(--n)));
  position: absolute;
  inset: 20px;
  text-align: center;
  font-size: 1.5rem;
  color: #5dffff;
}

.number b {
  transform: rotate(calc(-30deg * var(--n)));
  display: inline-block;
  text-shadow: 0 0 3px #5dffff;
}

.hourhand,
.minutehand,
.secondhand {
  --rotate: 0;
  position: absolute;
  bottom: 50%;
  right: 50%;
  transform: translate(50%) rotate(calc(var(--rotate) * 1deg));
  transform-origin: bottom;
  border-radius: 6px;
}

.hourhand {
  height: 100px;
  width: 8px;
  background: linear-gradient(#ff0000, #0101ff);
}

.minutehand {
  height: 130px;
  width: 6px;
  background: linear-gradient(#ffd000, #0101ff);
}

.secondhand {
  height: 150px;
  width: 4px;
  background: linear-gradient(#e100ff, #0101ff);
}

.centerdot {
  height: 16px;
  width: 16px;
  background-color: #d1ddeb;
  position: absolute;
  border-radius: 50%;
}

/* Buttons */
.theme-buttons {
  margin-top: 30px;
}

.theme-buttons button {
  margin: 0 10px;
  padding: 10px 20px;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  background-color: var(--button-bg);
  color: var(--button-text);
  cursor: pointer;
  transition: 0.3s ease;
}

.theme-buttons button:hover {
  background-color: var(--button-hover);
  color: var(--text-color-hover);
}

.theme-buttons .active {
  outline: 2px solid var(--active-glow);
}


@media (max-width: 768px) {
  .title {
    font-size: 2.2rem;
    margin-bottom: 20px;
  }

  .clock-box {
    padding: 25px 30px;
    min-width: 250px;
  }

  #clock {
    font-size: 2.5rem;
  }

  #date {
    font-size: 1.2rem;
  }

  .clock {
    width: 280px;
    height: 280px;
    margin: 0 auto;
  }

  .number {
    font-size: 1.1rem;
  }

  .hourhand {
    height: 70px;
    width: 6px;
  }

  .minutehand {
    height: 90px;
    width: 4px;
  }

  .secondhand {
    height: 110px;
    width: 2px;
  }

  .centerdot {
    height: 10px;
    width: 10px;
  }

  .theme-buttons button {
    padding: 8px 12px;
    font-size: 0.9rem;
  }
}

@media (min-width: 769px) and (max-width: 1440px) {
  .clock-box {
    padding: 40px 60px;
  }

  #clock {
    font-size: 3.5rem;
  }

  #date {
    font-size: 1.4rem;
  }

  .clock {
    width: 400px;
    height: 400px;
  }
}

@media (min-width: 1920px) {
  .title {
    font-size: 4rem;
  }

  .clock-box {
    padding: 60px 90px;
  }

  #clock {
    font-size: 5rem;
  }

  #date {
    font-size: 2rem;
  }

  .clock {
    width: 550px;
    height: 550px;
  }

  .number {
    font-size: 2rem;
  }

  .hourhand {
    height: 160px;
    width: 10px;
  }

  .minutehand {
    height: 210px;
    width: 8px;
  }

  .secondhand {
    height: 250px;
    width: 6px;
  }

  .centerdot {
    height: 18px;
    width: 18px;
  }

  .theme-buttons button {
    padding: 14px 28px;
    font-size: 1.1rem;
  }
}

.hidden {
  display: none;
}