/* dropper.css — minimal styles, light/dark mode, responsive */

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

:root {
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --bg-secondary: #f5f5f5;
  --border: #ddd;
  --accent: #2c3e50;
  --accent-hover: #34495e;
  --link: #2980b9;
  --link-hover: #1a5276;
  --error: #c0392b;
  --success: #27ae60;
  --info: #2980b9;
  --muted: #777;
  --radius: 4px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  --touch-min: 44px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a1a;
    --fg: #e0e0e0;
    --bg-secondary: #252525;
    --border: #444;
    --accent: #5dade2;
    --accent-hover: #85c1e9;
    --link: #5dade2;
    --link-hover: #85c1e9;
    --error: #e74c3c;
    --success: #2ecc71;
    --info: #5dade2;
    --muted: #999;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
  }
}

body {
  font-family: var(--font-stack);
  background-color: var(--bg);
  color: var(--fg);
  line-height: 1.5;
  min-height: 100vh;
}

/* --- Buttons --- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-min);
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s, border-color 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

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

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--fg);
}

.btn-secondary:hover {
  background: var(--border);
}

.btn-logout {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
  min-height: 36px;
  padding: 0.25rem 0.75rem;
  font-size: 0.8rem;
}

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

.btn-small {
  min-height: 32px;
  padding: 0.25rem 0.5rem;
  font-size: 0.8rem;
}

/* --- Login Page --- */

.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-form {
  max-width: 360px;
  width: 100%;
  padding: 2rem;
}

.login-title {
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.login-error {
  color: var(--error);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.login-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.login-input {
  width: 100%;
  padding: 0.5rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--fg);
}

.login-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.login-button {
  width: 100%;
  padding: 0.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  cursor: pointer;
  min-height: var(--touch-min);
}

.login-button:hover {
  background: var(--accent-hover);
}

/* --- App Header --- */

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

.app-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.app-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logout-form {
  margin: 0;
}

/* --- App Layout --- */

.app-layout {
  display: flex;
  min-height: calc(100vh - 53px);
}

.sidebar {
  width: 220px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  padding: 1rem;
  background: var(--bg-secondary);
}

.main-content {
  flex: 1;
  padding: 1rem;
  min-width: 0;
}

/* --- Breadcrumbs --- */

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0;
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

.breadcrumb-link {
  color: var(--link);
  text-decoration: none;
  padding: 0.125rem 0.25rem;
  border-radius: var(--radius);
}

.breadcrumb-link:hover {
  color: var(--link-hover);
  background: var(--bg-secondary);
}

.breadcrumb-sep {
  color: var(--muted);
  user-select: none;
}

.breadcrumb-current {
  font-weight: 600;
  padding: 0.125rem 0.25rem;
}

/* --- File List --- */

.filelist-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}

.filelist-count {
  color: var(--muted);
}

.sort-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sort-label {
  color: var(--muted);
}

.sort-btn {
  color: var(--link);
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
}

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

.sort-active {
  font-weight: 600;
}

.filelist {
  list-style: none;
  padding: 0;
}

.filelist-item {
  border-bottom: 1px solid var(--border);
}

.filelist-item:last-child {
  border-bottom: none;
}

.filelist-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.25rem;
  min-height: var(--touch-min);
  text-decoration: none;
  color: var(--fg);
}

a.filelist-link:hover {
  background: var(--bg-secondary);
  border-radius: var(--radius);
}

.filelist-dir-link {
  color: var(--link);
}

.filelist-icon {
  flex-shrink: 0;
  width: 1.5em;
  text-align: center;
}

.filelist-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.filelist-size,
.filelist-date {
  flex-shrink: 0;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: right;
}

.filelist-size {
  min-width: 5em;
}

.filelist-date {
  min-width: 10em;
}

.filelist-file-row {
  cursor: default;
}

.filelist-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-shrink: 0;
  margin-left: 0.5rem;
}

.btn-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-secondary);
  color: var(--fg);
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s, border-color 0.15s;
  line-height: 1;
}

.btn-action:hover {
  background: var(--border);
  border-color: var(--accent);
}

a.btn-action {
  color: var(--fg);
}

a.btn-action:hover {
  color: var(--accent);
}

.btn-delete:hover {
  border-color: var(--error);
  color: var(--error);
}

.filelist-empty {
  padding: 2rem;
  text-align: center;
  color: var(--muted);
  font-style: italic;
}

/* --- Actions Bar --- */

.actions-bar {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  align-items: center;
}

/* --- Drop Zone --- */

.dropzone {
  margin-top: 1.5rem;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  transition: border-color 0.2s, background-color 0.2s;
}

.dropzone.drag-over {
  border-color: var(--accent);
  background: var(--bg-secondary);
}

.dropzone-text {
  color: var(--muted);
  margin-bottom: 1rem;
}

.dropzone-fallback {
  cursor: pointer;
}

.dropzone-input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

/* --- Bookmarks --- */

.bookmarks-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.bookmarks-title {
  font-size: 0.9rem;
  font-weight: 600;
}

.btn-bookmark-add {
  font-size: 1rem;
  font-weight: 700;
  min-height: 32px;
  min-width: 32px;
  padding: 0;
}

.bookmarks-list {
  list-style: none;
  padding: 0;
}

.bookmark-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem;
  padding: 0.25rem 0;
}

.bookmark-link {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--link);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 0.25rem;
  border-radius: var(--radius);
}

.bookmark-link:hover {
  background: var(--bg-secondary);
}

.bookmark-remove {
  flex-shrink: 0;
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.8rem;
  padding: 0.25rem;
  line-height: 1;
}

.bookmark-remove:hover {
  color: var(--error);
}

/* --- Toast Notifications --- */

#toast-container {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  font-size: 0.9rem;
  pointer-events: auto;
  animation: toast-in 0.3s ease-out;
  max-width: 360px;
}

.toast-success {
  background: var(--success);
  color: #fff;
}

.toast-error {
  background: var(--error);
  color: #fff;
}

.toast-info {
  background: var(--info);
  color: #fff;
}

.toast-fade {
  animation: toast-out 0.3s ease-in forwards;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(1rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes toast-out {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(1rem);
  }
}

/* --- Preview Modal --- */

.preview-modal[hidden] {
  display: none;
}

.preview-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
}

.preview-content {
  position: relative;
  background: var(--bg);
  border-radius: var(--radius);
  padding: 1.5rem;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.preview-title {
  font-size: 1rem;
  margin-bottom: 1rem;
}

.preview-image-container {
  margin-bottom: 1rem;
  text-align: center;
}

.preview-image {
  max-width: 100%;
  max-height: 300px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.preview-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
}

/* --- Responsive --- */

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

  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 0.75rem;
  }

  .bookmarks-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .bookmark-item {
    padding: 0;
  }

  .filelist-date {
    display: none;
  }

  .filelist-size {
    min-width: 4em;
  }

  .sort-controls {
    gap: 0.25rem;
  }

  .filelist-actions {
    gap: 0.15rem;
  }

  .btn-action {
    width: 24px;
    height: 24px;
    font-size: 0.75rem;
  }
}

@media (max-width: 480px) {
  .filelist-controls {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .preview-content {
    width: 95%;
    padding: 1rem;
  }
}

/* --- Disk Usage Footer --- */

.disk-usage-footer {
  margin-top: 1.5rem;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.disk-usage-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.disk-usage-text {
  white-space: nowrap;
}

.disk-bar {
  flex: 1;
  height: 0.5rem;
  background: var(--bg-alt);
  border-radius: 0.25rem;
  overflow: hidden;
  max-width: 200px;
}

.disk-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 0.25rem;
  transition: width 0.3s ease;
}

.disk-usage-loading {
  font-style: italic;
}

/* --- Upload Progress Bar --- */

.upload-progress {
  margin-top: 0.75rem;
  height: 0.5rem;
  background: var(--bg-alt);
  border-radius: 0.25rem;
  overflow: hidden;
}

.upload-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 0.25rem;
  transition: width 0.15s ease;
}