:root {
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --secondary-color: #f8fafc;
  --background-color: #ffffff;
  --text-color: #1e293b;
  --text-secondary: #64748b;
  --header-bg: #ffffff;
  --table-header-bg: #f1f5f9;
  --button-bg: #f1f5f9;
  --button-hover-bg: #e2e8f0;
  --border-color: #e2e8f0;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark {
  --primary-color: #818cf8;
  --primary-hover: #6366f1;
  --secondary-color: #1e293b;
  --background-color: #0f172a;
  --text-color: #f1f5f9;
  --text-secondary: #94a3b8;
  --header-bg: #1e293b;
  --table-header-bg: #334155;
  --button-bg: #334155;
  --button-hover-bg: #475569;
  --border-color: #334155;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--background-color) 100%);
  color: var(--text-color);
  line-height: 1.6;
  transition: var(--transition);
  min-height: 100vh;
}

header {
  background-color: var(--header-bg);
  padding: 1.25rem 2rem;
  box-shadow: var(--shadow);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}

.title {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.win-logo {
  font-size: 1.75rem;
  filter: saturate(1.2);
}

header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Modern Theme Toggle */
.theme-toggle {
  position: relative;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 12px;
  background: var(--button-bg);
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.theme-toggle:hover {
  background: var(--button-hover-bg);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.theme-toggle:active {
  transform: translateY(0);
}

.theme-toggle.animating {
  animation: themePulse 0.3s ease;
}

@keyframes themePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(0.95); }
}

.theme-icon {
  position: relative;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-icon svg {
  width: 20px;
  height: 20px;
  position: absolute;
  transition: var(--transition);
  stroke: currentColor;
}

.sun-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.moon-icon {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

body.dark .sun-icon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

body.dark .moon-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.container {
  max-width: 100%;
  margin: 0;
  padding: 0;
  background-color: var(--background-color);
  transition: var(--transition);
  min-height: calc(100vh - 80px);
}

.full-width {
  width: 100%;
}

.content {
  padding: 2rem;
  max-width: 1600px;
  margin: 0 auto;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.breadcrumbs .crumb {
  padding: 0.5rem 0.875rem;
  border-radius: 8px;
  background: var(--secondary-color);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-color);
  border: 1px solid transparent;
}

.breadcrumbs .crumb:hover {
  background: var(--button-bg);
  border-color: var(--border-color);
}

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

.toolbar-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.toolbar-actions button {
  padding: 0.625rem 1rem;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.875rem;
  transition: var(--transition);
}

.separator {
  width: 1px;
  height: 24px;
  background: var(--border-color);
  margin: 0 0.25rem;
}

/* Upload Section */
.upload-section {
  margin-bottom: 2rem;
}

.upload-button-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
}

.upload-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  background: var(--primary-color);
  color: #fff;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-weight: 500;
  font-size: 0.9375rem;
}

.upload-button:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.upload-button:active {
  transform: translateY(0);
}

.upload-button.hidden {
  display: none;
}

/* Upload Progress Container */
.upload-progress-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
  padding: 1.25rem 2rem;
  background: var(--background-color);
  border-radius: var(--border-radius);
  border: 2px solid var(--border-color);
  transition: var(--transition);
}

.upload-progress-container.hidden {
  display: none;
}

.upload-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

#uploadFileName {
  font-weight: 600;
  color: var(--text-color);
  font-size: 0.9375rem;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cancel-btn {
  padding: 0.5rem 1rem;
  background: #ef4444;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.875rem;
  transition: var(--transition);
  white-space: nowrap;
}

.cancel-btn:hover {
  background: #dc2626;
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.cancel-btn:active {
  transform: translateY(0);
}

.upload-progress-bar-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

#uploadProgress {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  border: none;
  overflow: hidden;
}

#uploadProgress::-webkit-progress-bar {
  background-color: var(--secondary-color);
  border-radius: 4px;
}

#uploadProgress::-webkit-progress-value {
  background: var(--primary-color);
  border-radius: 4px;
  transition: width 0.3s ease;
}

#uploadProgress::-moz-progress-bar {
  background: var(--primary-color);
  border-radius: 4px;
}

.upload-progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
}

#uploadPercent,
#uploadSpeed {
  white-space: nowrap;
}

.drop-wrapper {
  border: 3px dashed var(--primary-color);
  border-radius: var(--border-radius);
  padding: 3rem 2rem;
  text-align: center;
  color: var(--primary-color);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(99, 102, 241, 0.02) 100%);
  margin-bottom: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.drop-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.7;
  transition: var(--transition);
}

.drop-wrapper:hover .drop-icon {
  opacity: 1;
  transform: scale(1.1);
}

.drop-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
  transition: left 0.5s;
}

.drop-wrapper.dragover {
  background: rgba(99, 102, 241, 0.05);
  border-color: var(--primary-hover);
  transform: scale(1.02);
}

.drop-wrapper.dragover::before {
  left: 100%;
}

.drop-hint {
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

#selectedFiles {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  min-height: 1.2em;
}

.progress-container {
  display: none;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--secondary-color);
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
}

#uploadProgressContainer.show {
  display: flex;
}

/* Action Toolbar */
.action-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  background: var(--secondary-color);
  border-radius: var(--border-radius);
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-color);
  gap: 1rem;
  flex-wrap: wrap;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toolbar-btn {
  padding: 0.625rem 1rem;
  border: none;
  border-radius: 8px;
  background: var(--button-bg);
  color: var(--text-color);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

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

.toolbar-btn:disabled:hover {
  transform: none;
  box-shadow: none;
}

.toolbar-btn:hover {
  background: var(--button-hover-bg);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

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

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

.toolbar-btn.success {
  background: #10b981;
  color: #fff;
}

.toolbar-btn.success:hover {
  background: #059669;
}

.toolbar-separator {
  width: 1px;
  height: 24px;
  background: var(--border-color);
  margin: 0 0.25rem;
}

.folder-input-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--background-color);
  padding: 0.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  animation: slideIn 0.2s ease;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.folder-input-group input {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--background-color);
  color: var(--text-color);
  font-size: 0.875rem;
  min-width: 200px;
  transition: var(--transition);
}

.folder-input-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

#uploadProgress {
  flex-grow: 1;
  height: 8px;
  border-radius: 4px;
  border: none;
}

#uploadProgress::-webkit-progress-bar {
  background-color: var(--button-bg);
  border-radius: 4px;
}

#uploadProgress::-webkit-progress-value {
  background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
  border-radius: 4px;
  transition: width 0.3s ease;
}

#uploadProgress::-moz-progress-bar {
  background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
  border-radius: 4px;
}

#uploadPercent,
#uploadSpeed {
  white-space: nowrap;
  font-weight: 600;
  color: var(--text-color);
  font-size: 0.875rem;
}

.grid-header {
  display: grid;
  grid-template-columns: 2.5fr 1fr 1fr 1.2fr 200px;
  gap: 0.5rem;
  margin: 0.5rem 0 0.75rem;
}

.grid-header .col {
  text-align: left;
  background: var(--table-header-bg);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.875rem;
  transition: var(--transition);
  border: 1px solid transparent;
  color: var(--text-color);
}

.grid-header .col:hover {
  background: var(--button-hover-bg);
  border-color: var(--border-color);
}

.col-actions {
  text-align: right;
}

.table-container {
  overflow-x: auto;
  border-radius: var(--border-radius);
}

table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  transition: var(--transition);
  font-size: 0.9375rem;
}

tr {
  transition: var(--transition);
}

tr:hover {
  background-color: var(--secondary-color);
}

#fileTable tr > td:nth-child(1) {
  width: 40%;
}

#fileTable tr > td:nth-child(2) {
  width: 15%;
}

#fileTable tr > td:nth-child(3) {
  width: 15%;
}

#fileTable tr > td:nth-child(4) {
  width: 20%;
}

#fileTable tr > td:nth-child(5) {
  width: 10%;
  text-align: right;
}

.action-btn {
  padding: 0.375rem 0.625rem;
  font-size: 0.8125rem;
  margin-left: 0.25rem;
  min-width: auto;
}

.name-cell {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
  max-width: 100%;
}

.name-cell .name-text {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  display: inline-block;
  min-width: 0;
}


input[type="text"] {
  padding: 0.625rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--background-color);
  color: var(--text-color);
  transition: var(--transition);
  font-size: 0.9375rem;
  flex: 1;
}

input[type="text"]::placeholder {
  color: var(--text-secondary);
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

button {
  padding: 0.625rem 1rem;
  border: none;
  border-radius: 8px;
  background-color: var(--button-bg);
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-color);
  font-size: 0.9375rem;
  font-weight: 500;
}

button:hover {
  background-color: var(--button-hover-bg);
  transform: translateY(-1px);
}

button.primary {
  background-color: var(--primary-color);
  color: #fff;
}

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

button.danger {
  background-color: #ef4444;
  color: white;
}

button.danger:hover {
  background-color: #dc2626;
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.modal.hidden {
  display: none;
}

.modal-content {
  background-color: var(--background-color);
  color: var(--text-color);
  padding: 2rem;
  border-radius: var(--border-radius);
  max-width: 400px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-actions {
  margin-top: 1.5rem;
  display: flex;
  justify-content: center;
  gap: 0.75rem;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--secondary-color);
}

::-webkit-scrollbar-thumb {
  background: var(--button-bg);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--button-hover-bg);
}

/* Responsive */
@media (max-width: 768px) {
  header {
    padding: 1rem 1.5rem;
  }

  .content {
    padding: 1rem;
  }

  .grid-header {
    grid-template-columns: 2fr 0.8fr 0.8fr 1fr 120px;
    font-size: 0.75rem;
  }

  .drop-wrapper {
    padding: 2rem 1rem;
  }

  .drop-icon {
    font-size: 3rem;
  }
}