@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", sans-serif;
}

:root {
  --fs-small: clamp(11px, 1.2vw, 13px);
  --fs-normal: clamp(13px, 1.5vw, 15px);
  --fs-medium: clamp(15px, 2vw, 18px);
  --fs-large: clamp(18px, 2.5vw, 22px);
}

body {
  min-height: 100vh;
  background: radial-gradient(circle at top, #0f172a, #020617);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #e2e8f0;
}

.title {
  text-align: center;
  font-size: var(--fs-large);
  font-weight: 600;
  margin-bottom: 15px;
}

.section_title {
  font-size: var(--fs-small);
  opacity: 0.7;
  margin-top: 15px;
  margin-bottom: 6px;
  text-align: left;
}

/* Main Card */
.main_container {
  width: 95%;
  max-width: 420px;
  padding: 22px;
  border-radius: 18px;
  background: rgb(15, 23, 42);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(20px);
}

/* Gradient Preview */
#main_div {
  height: 190px;
  border-radius: 14px;
  position: relative;
  margin-bottom: 18px;
  overflow: hidden;
  background-color: transparent;
  /* box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.4); */
}

/* Color Buttons */
#leftButton,
#rightButton {
  font-size: clamp(8px, 1vw, 11px);
  position: absolute;
  bottom: 12px;
  width: 55px;
  height: 55px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.3);
  font-size: 10px;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  transition: all 0.25s ease;
}

#leftButton {
  left: 12px;
}

#rightButton {
  right: 12px;
}

#leftButton:hover,
#rightButton:hover {
  transform: scale(1.1);
  border-color: #fff;
}

/* Generate Button */
#genGradButton {
  width: 100%;
  padding: 13px;
  border-radius: 12px;
  border: none;
  font-weight: 600;
  background: linear-gradient(135deg, #6366f1, #7c3aed);
  color: #fff;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: var(--fs-normal);
}

#genGradButton:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(124, 58, 237, 0.5);
}

/* Headings */
p {
  font-size: var(--fs-small);
  margin: 14px 0 6px;
  opacity: 0.75;
}

/* Angle Buttons */
.gradAngle {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.gradAngle button {
  padding: 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  color: #cbd5f5;
  cursor: pointer;
  transition: 0.25s ease;
}

.gradAngle button:hover {
  background: #6366f1;
  color: #fff;
  transform: translateY(-2px);
}

/* Copy Box */
#copyClipBoard {
  font-size: var(--fs-small);
  margin-top: 12px;
  padding: 14px;
  border-radius: 10px;
  font-size: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  cursor: pointer;
  transition: 0.2s;
}

#copyClipBoard:hover {
  background: rgba(99, 102, 241, 0.15);
}

/* Toast Message */
.toastMsg {
  position: fixed;
  top: 0;
  right: 20px;
  background: #22c55e;
  color: #fff;
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 13px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  animation: fadeInOut 2.5s ease forwards;
}

@keyframes fadeInOut {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  10% {
    opacity: 1;
    transform: translateY(0);
  }
  90% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateY(20px);
  }
}

/* Mobile Optimization */
@media (max-width: 480px) {
  .main_container {
    padding: 18px;
  }

  #main_div {
    height: 160px;
  }

  #leftButton,
  #rightButton {
    width: 45px;
    height: 45px;
    font-size: 9px;
  }
}