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

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #141414;
  --bg-tertiary: #1a1a1a;
  --bg-hover: #252525;
  --text-primary: #e7e9ea;
  --text-secondary: #71767b;
  --accent: #1d9bf0;
  --accent-hover: #1a8cd8;
  --border: #2f3336;
  --success: #00ba7c;
  --error: #f4212e;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

.search-input {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 10px 20px;
  color: var(--text-primary);
  font-size: 14px;
  width: 300px;
  transition: border-color 0.15s;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent);
}

.search-input::placeholder {
  color: var(--text-secondary);
}

.main {
  display: flex;
  flex: 1;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.sidebar {
  width: 240px;
  padding: 24px;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 32px;
  position: sticky;
  top: 73px;
  height: calc(100vh - 73px);
}

.filters {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s;
  text-align: left;
}

.filter-btn:hover {
  background: var(--bg-hover);
}

.filter-btn.active {
  background: var(--bg-tertiary);
  font-weight: 600;
}

.filter-icon {
  font-size: 18px;
}

.filter-count {
  margin-left: auto;
  background: var(--bg-tertiary);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 12px;
  color: var(--text-secondary);
}

.filter-btn.active .filter-count {
  background: var(--bg-hover);
}

.user-section {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.user-section label {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.user-input {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text-primary);
  font-size: 13px;
  font-family: monospace;
}

.user-input:focus {
  outline: none;
  border-color: var(--accent);
}

.load-btn {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.load-btn:hover {
  background: var(--accent-hover);
}

.content {
  flex: 1;
  padding: 24px;
}

.content-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.content-header h2 {
  font-size: 20px;
  font-weight: 600;
}

.item-count {
  color: var(--text-secondary);
  font-size: 14px;
}

.saves-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.save-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.15s;
}

.save-card:hover {
  border-color: var(--text-secondary);
  transform: translateY(-2px);
}

.card-screenshot {
  width: 100%;
  height: 160px;
  object-fit: cover;
  background: var(--bg-tertiary);
}

.card-screenshot-placeholder {
  width: 100%;
  height: 160px;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  opacity: 0.3;
}

.card-body {
  padding: 16px;
}

.card-type {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-url {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-note {
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg-tertiary);
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-secondary);
}

.card-date {
  display: flex;
  align-items: center;
  gap: 4px;
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 20px;
}

.empty-icon {
  font-size: 64px;
  margin-bottom: 16px;
}

.empty-state h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.empty-state p {
  color: var(--text-secondary);
  font-size: 14px;
}

.loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 20px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  margin: 0 auto 16px;
  animation: spin 0.8s linear infinite;
}

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

.hidden {
  display: none !important;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
}

.modal-content {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  max-width: 700px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--bg-tertiary);
  border: none;
  color: var(--text-primary);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.modal-close:hover {
  background: var(--bg-hover);
}

.modal-screenshot {
  width: 100%;
  max-height: 300px;
  object-fit: cover;
}

.modal-body-content {
  padding: 24px;
}

.modal-type {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.modal-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.modal-url {
  color: var(--accent);
  font-size: 14px;
  margin-bottom: 20px;
  word-break: break-all;
}

.modal-url a {
  color: inherit;
  text-decoration: none;
}

.modal-url a:hover {
  text-decoration: underline;
}

.modal-section {
  margin-bottom: 20px;
}

.modal-section-title {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.modal-note {
  background: var(--bg-tertiary);
  padding: 16px;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.5;
}

.modal-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.modal-meta-item {
  font-size: 13px;
}

.modal-meta-item span {
  color: var(--text-secondary);
  display: block;
  margin-bottom: 4px;
}

.modal-data {
  background: var(--bg-tertiary);
  padding: 16px;
  border-radius: 8px;
  font-family: monospace;
  font-size: 12px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

@media (max-width: 768px) {
  .main {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .filters {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .filter-btn {
    flex: 1;
    min-width: 100px;
    justify-content: center;
  }

  .user-section {
    margin-top: 16px;
  }

  .search-input {
    width: 200px;
  }

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