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

body {
  font-family: 'Inter', sans-serif;
  background-color: hsl(0, 0%, 98%);
  color: hsl(0, 0%, 5%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.container {
  width: 100%;
  max-width: 896px;
}

.heading {
  font-size: clamp(48px, 8vw, 72px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.05em;
  margin-bottom: 24px;
}

.gradient-text {
  display: inline-block;
  padding-right: 4px;
  background: linear-gradient(90deg, #ec4899, #a855f7, #06b6d4);
  background-size: 200% auto;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient-glow 3s ease infinite;
}

@keyframes gradient-glow {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.description {
  font-size: clamp(18px, 2.5vw, 20px);
  line-height: 1.6;
  color: hsl(0, 0%, 40%);
  max-width: 768px;
  margin-bottom: 24px;
}

.form {
  max-width: 448px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 16px;
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  background-color: white;
  border: 1px solid hsl(0, 0%, 90%);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-group input {
  height: 56px;
}

.form-group textarea {
  min-height: 60px;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: hsl(0, 0%, 40%);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: hsl(0, 0%, 5%);
  box-shadow: 0 0 0 1px hsl(0, 0%, 5%);
}

button[type="submit"] {
  width: 100%;
  height: 56px;
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 500;
  background-color: hsl(0, 0%, 5%);
  color: hsl(0, 0%, 98%);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.15s;
}

button[type="submit"]:hover {
  background-color: hsl(0, 0%, 15%);
}

button[type="submit"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 16px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
  z-index: 1000;
}

.toast.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.toast.success {
  background-color: hsl(142, 76%, 36%);
  color: white;
}

.toast.error {
  background-color: hsl(0, 84%, 60%);
  color: white;
}

.mtop20 {
  margin-top: 20px;
}