html {
  font-size: 16px;
}

:root {
  --page-card-max-width: 735px;
}

body {
  margin: 0;
  padding: 0 1rem;
  font-family: "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  color: #1f2933;
  background: #ffffff;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

header,
main,
footer {
  width: 100%;
  margin: 0 auto;
}

.header {
  padding: 2rem 0 1rem;
  text-align: center;
}

.header h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.04em;
}

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 1rem 0 2rem;
}

.row {
  width: 100%;
  justify-content: center;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

footer {
  padding: 2rem 0;
  text-align: center;
}

.surface {
  background: #fcfdff;
  border: 1px solid #e5ebf1;
  border-radius: 18px;
  box-shadow: 0 10px 28px rgba(31, 41, 51, 0.08);
}

.auth-panel,
#gallery-browser-component,
#image-display-component,
#add-image-component {
  width: min(100%, var(--page-card-max-width));
  max-width: var(--page-card-max-width);
  margin-left: auto;
  margin-right: auto;
  box-sizing: border-box;
}

.auth-panel {
  margin: 1.25rem auto 0;
  padding: 1.15rem;
  text-align: left;
}

.auth-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.auth-launch-actions {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.auth-form {
  display: grid;
  gap: 0.85rem;
  padding: 1.15rem;
  background: #fcfdff;
  border: 1px solid #e5ebf1;
  border-radius: 18px;
  box-shadow: 0 10px 28px rgba(31, 41, 51, 0.08);
}

.auth-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.15rem;
}

.auth-actions > button {
  flex: 1 1 9rem;
}

.current-user-status {
  margin: 0;
  font-weight: 700;
  color: #475467;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  margin: 0 0 0.95rem;
}

.section-header p {
  margin: 0;
  font-weight: 700;
  color: #475467;
}

.selected-gallery-summary {
  margin: 0;
  font-weight: 700;
  color: #475467;
}

#image-display-component,
#add-image-component {
  flex: 0 0 auto;
  align-self: center;
  padding: 1.35rem;
}

#gallery-browser-component {
  flex: 0 0 auto;
  align-self: center;
  padding: 1.15rem;
}

#image-display-component {
  overflow: hidden;
}

#credit-button {
  color: #1f2933;
  text-decoration: none;
  font-weight: 700;
}

#credit-button:hover {
  text-decoration: underline;
}

/* Credits page refinements */
.header .site-title-link,
.header .site-title-link:visited,
.header .site-title-link:hover,
.header .site-title-link:active,
.header .site-title-link:focus {
  color: inherit;
  text-decoration: none;
}

.credits-main {
  padding-top: 1rem;
}

.credits-row {
  justify-content: center;
  row-gap: 1rem;
  column-gap: 0;
}

.credits-card {
  min-width: 0;
  padding: 1.35rem 1.6rem;
  box-sizing: border-box;
}

.credits-card h2 {
  margin: 0 0 0.85rem;
  padding-left: 0.35rem;
}

.credits-card ul {
  margin: 0;
  padding-left: 1.65rem;
}

.credits-card li {
  max-width: 100%;
}

.credits-card a {
  overflow-wrap: anywhere;
  word-break: break-word;
}

@media (max-width: 576px) {
  .credits-card {
    padding: 1rem 1.1rem;
  }

  .credits-card h2 {
    padding-left: 0.2rem;
  }

  .credits-card ul {
    padding-left: 1.35rem;
  }
}

[hidden] {
  display: none !important;
}

.loading-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 1rem 0;
}

.operation-status {
  margin: 0.75rem 0 0;
  font-size: 0.95rem;
  font-weight: 600;
}

.operation-status[data-kind="error"] {
  color: #b42318;
}

.operation-status[data-kind="success"] {
  color: #067647;
}

.operation-status[data-kind="info"] {
  color: #475467;
}

.comment-view-note {
  margin: 0.75rem 0 0;
  color: #667085;
  font-style: italic;
}

.loading-spinner {
  width: 1rem;
  height: 1rem;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: loading-spin 0.8s linear infinite;
}

@keyframes loading-spin {
  to {
    transform: rotate(360deg);
  }
}