@font-face {
  font-family: "Roboto", sans-serif;
  src: local("Roboto Regular"), url(assets/fonts/Roboto-Regular.ttf);
  font-weight: 400;
}

@font-face {
  font-family: "Roboto", sans-serif;
  src: local("Roboto Bold"), url(assets/fonts/Roboto-Bold.ttf);
  font-weight: 700;
}

:root {
  /* Colors */
  --clr-primary: hsl(4, 100%, 67%);

  /* Neutral Colors */
  --clr-blue-800: hsl(234, 29%, 20%);
  --clr-blue-700: hsl(235, 18%, 26%);
  --clr-grey: hsl(0, 0%, 58%);
  --clr-white: hsl(0, 0%, 100%);

  /* Typography */
  --ff-primary: Roboto, sans-serif;
  --fw-regular: 400;
  --fw-bold: 700;
  --fs-base: 1rem; /* 16px */
  --fs-small: 0.8rem; /* 12px */

  /* Spacing */
  --spacing-xs: 0.5rem; /* 8px */
  --spacing-sm: 1rem; /* 16px */
  --spacing-md: 1.5rem; /* 24px */
  --spacing-lg: 2rem; /* 32px */
  --spacing-xl: 2.5rem; /* 40px */

  /* Border Radius */
  --border-radius-sm: 0.25rem; /* 4px */
  --border-radius-md: 0.5rem; /* 8px */
  --border-radius-lg: 1rem; /* 16px */

  /* Transitions */
  --transition-base: 0.3s ease;

  /* Animation Variables */
  --animation-timing: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --bounce-timing: 0.5s cubic-bezier(0.36, 0, 0.66, -0.56);
  --scale-bounce: 0.98;
}

/* Reset default styles */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

ul {
  list-style: none;
}

body {
  display: grid;
  min-height: 100vh;
  place-content: center;
  font-family: var(--ff-primary);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: 1.5;
  background-color: var(--clr-blue-700);
}

.newsletter-container {
  background-color: var(--clr-white);
  border-radius: 2rem;
  animation: slideUp var(--animation-timing);
}

.newsletter-container img {
  display: block;
  margin-inline: auto;
}

.newsletter-container .newsletter-content {
  padding: var(--spacing-md);
  display: grid;
  gap: var(--spacing-sm);
}

.newsletter-content h1 {
  font-size: 4rem;
  font-weight: var(--fw-bold);
  color: var(--clr-blue-800);
}

.newsletter-content p {
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: 150%;
  color: var(--clr-blue-800);
}

.checkmark {
  display: grid;
  gap: 0.5rem;
}

.checkmark li {
  display: grid;
  grid-template-columns: 2rem auto;
}

.checkmark li:before {
  content: url(assets/images/icon-list.svg);
}

.form-group {
  display: grid;
  gap: 0.5rem;
  position: relative;
}

.form-group label {
  font-size: var(--fs-small);
  font-weight: var(--fw-bold);
  color: var(--clr-blue-800);
}

.form-group input {
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--clr-grey);
  font-size: var(--fs-base);
  margin-bottom: var(--spacing-md);
  transition: all var(--animation-timing);
}

input::placeholder {
  color: var(--clr-grey);
}

.form-group input:focus {
  transform: translateY(-1px);
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
}

.form-group input.error {
  background-color: rgba(255, 98, 87, 0.15);
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  animation: shake 0.4s ease-in-out;
}

.form-group input.error::placeholder {
  color: var(--clr-primary);
}

.error-message {
  color: var(--clr-primary);
  font-size: var(--fs-small);
  font-weight: var(--fw-bold);
  display: none;
  position: absolute;
  right: 0;
  top: 0;
}

.submit-button {
  background-color: var(--clr-blue-800);
  color: var(--clr-white);
  padding: 1rem 2.2rem;
  width: 100%;
  border-radius: var(--border-radius-md);
  border: none;
  font-size: 1rem;
  font-weight: var(--fw-bold);
  line-height: 150%;
  cursor: pointer;
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.2);
  transition: transform var(--animation-timing), all var(--animation-timing),
    box-shadow var(--animation-timing);
}

.submit-button:hover,
.submit-button:focus-visible {
  background: linear-gradient(90deg, hsl(15, 100%, 61%), hsl(346, 100%, 66%));
  transform: translateY(-2px);
  box-shadow: 0 15px 20px rgba(0, 0, 0, 0.15);
}

.submit-button:active {
  transform: scale(var(--scale-bounce));
}

@media (min-width: 768px) {
  .newsletter-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin-inline: 1rem;
    padding: var(--spacing-md);
  }

  .newsletter-container .newsletter-content {
    grid-column: 1;
    grid-row: 1;
  }
}

/* Mobile styles */
@media (max-width: 500px) {
  .newsletter-container {
    margin: 0;
    border-radius: 0;
    min-height: 100vh;
  }

  .newsletter-content h1 {
    margin-top: 2.5rem;
    font-size: 2rem;
  }

  .newsletter-container img {
    width: 100%;
    height: auto;
    object-fit: cover;
  }

  .newsletter-container .newsletter-content {
    padding: var(--spacing-sm);
  }

  .form-group input {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
  }

  .submit-button {
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

/* styles for success message */
.newsletter-success {
  background-color: var(--clr-white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  max-width: 450px;
  display: none;
  gap: var(--spacing-md);
  animation: fadeIn var(--animation-timing);
}

.newsletter-success h2 {
  font-size: 2.5rem;
  color: var(--clr-blue-800);
  font-weight: var(--fw-bold);
  animation: slideUp var(--animation-timing) 0.1s forwards;
}

.newsletter-success p {
  color: var(--clr-blue-800);
  line-height: 150%;
  animation: slideUp var(--animation-timing) 0.2s forwards;
}

.newsletter-success p span {
  font-weight: var(--fw-bold);
}

.checkmark-icon {
  margin-bottom: var(--spacing-sm);
  animation: slideUp var(--animation-timing) forwards;
}

.dismiss-button {
  background-color: var(--clr-blue-800);
  color: var(--clr-white);
  padding: var(--spacing-md);
  width: 100%;
  border: none;
  border-radius: var(--border-radius-md);
  font-weight: var(--fw-bold);
  cursor: pointer;
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.2);
  margin-top: var(--spacing-md);
  animation: slideUp var(--animation-timing) 0.3s forwards;
  transition: transform var(--animation-timing), all var(--animation-timing),
    box-shadow var(--animation-timing);
}

.dismiss-button:hover,
.dismiss-button:focus-visible {
  background: linear-gradient(90deg, hsl(15, 100%, 61%), hsl(346, 100%, 66%));
  transform: translateY(-2px);
  box-shadow: 0 15px 20px rgba(0, 0, 0, 0.15);
}

.dismiss-button:active {
  transform: scale(var(--scale-bounce));
}

/* Mobile styles for success message */
@media (max-width: 500px) {
  .newsletter-success {
    min-height: 100vh;
    max-width: 100%;
    margin: 0;
    border-radius: 0;
    padding: var(--spacing-lg);
    display: grid;
    align-content: center;
    gap: var(--spacing-md);
  }

  .newsletter-success h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
  }

  .newsletter-success p {
    margin-bottom: var(--spacing-md);
  }

  .checkmark-icon {
    margin-bottom: var(--spacing-md);
  }

  .dismiss-button {
    margin-top: 20rem;
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

/* Animation styles */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  75% {
    transform: translateX(5px);
  }
}

/* Accessibility considerations */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}