/* Imports */
@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&display=swap');

/* Reset */
html {
  box-sizing: border-box;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

/* Base Styles */
body {
  margin: 0;
  padding: 0 2rem;
  min-height: 100vh;
  font-family: Bebas Neue, sans-serif;
  background: #70e1f5;  /* fallback for old browsers */
  background: -webkit-linear-gradient(to right, #ffd194, #70e1f5);
  background: linear-gradient(to right, #ffd194, #70e1f5);
}

/* Header */
h1 {
  text-align: center;
  margin-top: 25px;
  margin-bottom: 15px;
  font-size: 40px;
  letter-spacing: 5px;
}

/* Loader */
.loader {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;

  background: rgba(255, 255, 255, 0.8);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.loader.show {
  opacity: 1;
}

.loader img {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* Category Buttons */
.category-buttons {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

.category-buttons button {
  background-color: #1f2933;
  color: white;
  border: none;
  border-radius: 0.5rem;
  padding: 0.4rem 0.8rem;
  font-size: 18px;
  cursor: pointer;
}

.category-buttons button:hover {
  background-color: #334155;
  box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.25);
}

.category-buttons button:active {
  transform: translateY(2px);
}

.category-buttons button.selected {
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.8);
  transform: translateY(-7px);
}

/* Image Feed */
.image-container {
  width: 100%;
  max-width: 700px;
  margin: 0 auto;
  padding: 0.5rem 1rem;
}

.image-container img {
  width: 100%;
  margin-top: 5px;
  border-radius: 20px;
  opacity: 0;
  transform: translateX(-10px);
  transition: 
    opacity 0.6s ease,
    transform 0.3s ease-out;
}

.image-container img.display {
  opacity: 1;
  transform: translateX(0);
}

/* Photographer Attribution */
.photographer-text {
  text-align: center;
  margin: 0.4rem 0 1.5rem;
  padding-bottom: 2rem;
  font-size: 25px;
  color: #334155;
}

.photographer-link {
  color: #0077b6;
  text-decoration: none;
}

.photographer-link:hover {
  color: #00bcd4;
  text-decoration: underline;
}

/* Error Overlay */
.error-overlay {
  display: none;
  z-index: 2;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;

  background: rgba(0, 0, 0, 0.7);
}

.error-overlay.active {
  display: flex;
  justify-content: center;
  align-items: center;
}

.error-overlay p {
  max-width: 90vw;
  background-color: #7f1d1d;
  color: #fff7ed;
  padding: 0.75rem 1.25rem;
  border: 2px solid #dc2626;
  border-radius: 0.5rem;
  box-shadow: 0 0.5rem 1.25rem rgba(0, 0, 0, 0.25);
  font-size: 3rem;
}

/* Media Queries */
@media screen and (max-width: 600px) {
  h1 {
    font-size: 25px;
    letter-spacing: 2px;
  }

  .category-buttons {
    gap: 1rem;
  }

  .category-buttons button {
    font-size: 15px;
  }

  .image-container {
    max-width: 500px;
  }

  .photographer-text {
    padding-bottom: 1.2rem;
    font-size: 20px;
  }

  .error-overlay p {
    font-size: 1.2rem;
  }
}