:root {
  --color-primary: #f2637d;
  --color-primary-hover: #d94f68;
  --color-primary-tint: #fdeef1;
  --color-text: #333;
  --color-secondary-text: #666;
  --color-muted: #888;
  --color-faint: #aaa;
  --color-border: #ccc;
  --color-bg: #f5f5f5;
  --color-surface: #fff;
  --radius-sm: 6px;
  --radius-md: 8px;
  --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  font-family: sans-serif;
  margin: 0;
  padding: 0 0 40px;
  background-color: var(--color-bg);
  color: var(--color-text);
}

header {
  position: relative;
  overflow: hidden;
  padding: 40px 20px 32px;
  background: linear-gradient(135deg, #fdeef1 0%, #f5f5f5 70%);
}

header::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(242, 99, 125, 0.15);
}

header::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(242, 99, 125, 0.1);
}

.header-inner {
  position: relative;
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
}

.app-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}

header h1 {
  font-size: 28px;
  margin: 0 0 4px;
}

header p {
  margin: 0;
  color: var(--color-secondary-text);
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  margin-bottom: 40px;
}

section:first-of-type {
  margin-top: 32px;
}

h2 {
  font-size: 20px;
  margin: 0 0 16px;
}

.form-group {
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group label {
  font-weight: bold;
  font-size: 14px;
}

.form-group small {
  color: var(--color-muted);
  font-size: 13px;
}

.form-group input,
.form-group textarea {
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 15px;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-group textarea {
  resize: vertical;
}

.photo-preview-wrap {
  margin-bottom: 16px;
}

.photo-preview-wrap img {
  max-width: 200px;
  max-height: 200px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  display: block;
}

.primary-btn {
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  cursor: pointer;
}

.primary-btn:hover {
  background: var(--color-primary-hover);
}

#entry-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.entry-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  cursor: pointer;
}

.entry-card:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.entry-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
}

.entry-card-body {
  padding: 12px 16px 16px;
}

.entry-date {
  font-size: 12px;
  color: var(--color-faint);
  margin: 0 0 4px;
}

.entry-topic {
  display: inline-block;
  background: var(--color-primary-tint);
  color: var(--color-primary-hover);
  font-size: 12px;
  font-weight: bold;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 6px;
}

.topic-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.topic-chip {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
}

.topic-chip:hover {
  border-color: var(--color-primary);
}

.topic-chip.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.entry-caption {
  font-size: 15px;
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--color-muted);
}

.empty-icon {
  width: 64px;
  height: 64px;
  opacity: 0.6;
  margin-bottom: 12px;
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
}

.lightbox[hidden] {
  display: none;
}

.lightbox-content {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 20px;
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.lightbox-content img {
  width: 100%;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  display: block;
}

.lightbox-date {
  font-size: 12px;
  color: var(--color-faint);
  margin: 0 0 16px;
}

#lightbox-caption {
  font-size: 15px;
  margin: 0 0 8px;
}

.icon-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--color-muted);
  width: 32px;
  height: 32px;
}

.danger-btn {
  background: #fff;
  color: var(--color-primary-hover);
  border: 1px solid var(--color-primary-hover);
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
}

.danger-btn:hover {
  background: var(--color-primary-tint);
}

@media (max-width: 480px) {
  .header-inner {
    gap: 12px;
  }

  .app-icon {
    width: 40px;
    height: 40px;
  }

  header h1 {
    font-size: 24px;
  }
}