/* Custom styles for File Store Manager */

:root {
  --transition-duration: 0.2s;
}

/* Layout and spacing */
body {
  background: linear-gradient(
    135deg,
    var(--form-element-background-color) 0%,
    var(--card-background-color) 100%
  );
  min-height: 100vh;
}

main.container {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
}

header {
  text-align: center;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--muted-color);
}

header h1 {
  margin-bottom: 0.5rem;
}

header p {
  color: var(--muted-color);
  font-size: 1.125rem;
}

/* Article and section styles */
article {
  background: var(--card-background-color);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

section {
  padding: 2rem;
  border-bottom: 1px solid var(--muted-color);
}

section:last-of-type {
  border-bottom: none;
}

section h2 {
  margin-top: 0;
  margin-bottom: 1rem;
  color: var(--form-element-valid-border-color);
}

/* Form styles */
fieldset {
  margin: 0;
  padding: 0;
  border: none;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

input[type='file'],
input[type='number'] {
  margin-top: 0.25rem;
}

small {
  display: block;
  margin-top: 0.25rem;
  color: var(--muted-color);
  font-size: 0.875rem;
}

/* Grid layout for responsive design */
.grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 576px) {
  .grid {
    grid-template-columns: 1fr auto;
  }
}

/* Button styles */
button {
  transition: all var(--transition-duration) ease;
}

button:hover,
button:focus {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

button.outline {
  margin: 0;
}

/* File preview styles */
#filePreview {
  background: var(--form-element-background-color);
  padding: 2rem;
  border-radius: 8px;
  transition: all var(--transition-duration) ease;
}

#previewImage {
  transition: transform var(--transition-duration) ease;
}

#previewImage:hover {
  transform: scale(1.02);
}

#previewInfo {
  margin: 1rem 0 0 0;
}

/* Table styles */
table {
  margin-bottom: 0;
}

table thead th {
  background: var(--form-element-background-color);
  font-weight: 600;
  padding: 1rem;
  text-align: left;
}

table tbody tr {
  border-bottom: 1px solid var(--muted-color);
  transition: background-color var(--transition-duration) ease;
}

table tbody tr:hover {
  background: var(--form-element-background-color);
}

table td {
  padding: 1rem;
  vertical-align: middle;
}

table button {
  margin: 0;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Footer styles */
footer {
  text-align: center;
  padding: 2rem;
  color: var(--muted-color);
  border-top: 1px solid var(--muted-color);
}

footer a {
  color: var(--form-element-valid-border-color);
  text-decoration: none;
  transition: color var(--transition-duration) ease;
}

footer a:hover,
footer a:focus {
  text-decoration: underline;
  color: var(--link-color);
}

/* Responsive adjustments for small screens */
@media (max-width: 575px) {
  main.container {
    margin: 1rem auto;
    padding: 0 0.5rem;
  }

  section {
    padding: 1.5rem 1rem;
  }

  header {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
  }

  header h1 {
    font-size: 1.5rem;
  }

  header p {
    font-size: 1rem;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  button {
    width: 100%;
  }

  table {
    font-size: 0.875rem;
  }

  table thead {
    display: none;
  }

  table tbody,
  table tr,
  table td {
    display: block;
    width: 100%;
  }

  table tr {
    margin-bottom: 1rem;
    border: 1px solid var(--muted-color);
    padding: 0;
  }

  table td {
    text-align: right;
    padding: 0.5rem;
    position: relative;
  }

  table td::before {
    content: attr(data-label);
    position: absolute;
    left: 0.5rem;
    font-weight: 600;
    width: 40%;
  }
}

/* Accessibility improvements */
:focus-visible {
  outline: 2px solid var(--form-element-valid-border-color);
  outline-offset: 2px;
}

/* Loading and state indicators */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* Utility classes */
.text-center {
  text-align: center;
}

.mt-1 {
  margin-top: 0.5rem;
}

.mt-2 {
  margin-top: 1rem;
}

.mt-3 {
  margin-top: 1.5rem;
}