:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-color: #0284c7;
  --border-color: #334155;
  --error-color: #ef4444;
  --success-color: #10b981;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  background-color: var(--bg-secondary);
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.main-content {
  flex: 1;
  padding: 1rem;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

.spinner {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
}

.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.btn {
  background-color: var(--accent-color);
  color: white;
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  transition: opacity 0.2s;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.form-group input {
  width: 100%;
  padding: 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-primary);
}
.gallery-photo {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--bg-primary);
  cursor: zoom-in;
}

.gallery-photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.2s ease;
}

.gallery-photo:hover img {
  transform: scale(1.03);
}

.photo-viewer-open {
  overflow: hidden;
}

.photo-viewer {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3.5rem 1rem 1rem;
  background: rgba(0, 0, 0, 0.92);
  cursor: zoom-out;
}

.photo-viewer-image {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 4.5rem);
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 4px;
  cursor: default;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.45);
}

.photo-viewer-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.55);
  color: white;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
}

.photo-viewer-close:hover {
  background: rgba(255, 255, 255, 0.15);
}

@media (max-width: 600px) {
  .photo-viewer {
    padding: 3.5rem 0.5rem 0.5rem;
  }

  .photo-viewer-image {
    max-height: calc(100vh - 4rem);
    border-radius: 0;
  }
}