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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: #f5f5f5;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.container {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  padding: 40px;
  width: 100%;
  max-width: 500px;
}

.container.wide {
  max-width: 700px;
}

h1 {
  color: #333;
  margin-bottom: 30px;
  text-align: center;
  font-size: 24px;
}

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  color: #555;
  font-weight: 500;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 16px;
  transition: border-color 0.2s;
}

input[type="text"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: #4a90d9;
}

button {
  width: 100%;
  padding: 14px;
  background: #4a90d9;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover {
  background: #3a7bc8;
}

button:disabled {
  background: #ccc;
  cursor: not-allowed;
}

.select-input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 16px;
  background: white;
  cursor: pointer;
  transition: border-color 0.2s;
}

.select-input:focus {
  outline: none;
  border-color: #4a90d9;
}

.error {
  background: #fee;
  color: #c00;
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 20px;
  text-align: center;
}

.drop-zone {
  border: 3px dashed #ccc;
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 20px;
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: #4a90d9;
  background: #f0f7ff;
}

.drop-zone p {
  color: #666;
  margin-bottom: 10px;
}

.drop-zone .hint {
  font-size: 14px;
  color: #999;
}

.file-list {
  list-style: none;
  margin-bottom: 20px;
}

.file-item {
  display: flex;
  align-items: center;
  padding: 12px;
  background: #f9f9f9;
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: grab;
  transition: all 0.2s;
}

.file-item:active {
  cursor: grabbing;
}

.file-item.dragging {
  opacity: 0.5;
  background: #e0e0e0;
}

.file-item .handle {
  color: #999;
  margin-right: 12px;
  font-size: 18px;
}

.file-item .name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-item .size {
  color: #999;
  font-size: 14px;
  margin-left: 12px;
}

.file-item .remove {
  color: #c00;
  cursor: pointer;
  margin-left: 12px;
  font-size: 18px;
}

.file-item .remove:hover {
  color: #f00;
}

.progress-container {
  display: none;
  margin-bottom: 20px;
}

.progress-container.active {
  display: block;
}

.progress-bar {
  height: 8px;
  background: #e0e0e0;
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: #4a90d9;
  width: 0%;
  transition: width 0.3s;
}

.progress-text {
  text-align: center;
  margin-top: 10px;
  color: #666;
  font-size: 14px;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
}

.header h1 {
  margin-bottom: 0;
}

.logout-btn {
  width: auto;
  padding: 8px 16px;
  font-size: 14px;
  background: #666;
}

.logout-btn:hover {
  background: #555;
}