/* ===== CSS Variables ===== */
:root {
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --secondary-color: #8b5cf6;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  --info-color: #3b82f6;

  --bg-dark: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.8);
  --bg-input: rgba(51, 65, 85, 0.6);
  --border-color: rgba(148, 163, 184, 0.2);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --transition: all 0.3s ease;
}

/* ===== Reset & Base ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1e1b4b 50%, #0f172a 100%);
  min-height: 100vh;
  color: var(--text-primary);
  line-height: 1.6;
}

/* ===== Common Components ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(99, 102, 241, 0.5);
}

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

.btn-secondary {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(71, 85, 105, 0.6);
}

.input-field {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 15px;
  transition: var(--transition);
}

.input-field:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.input-field::placeholder {
  color: var(--text-muted);
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

/* ===== Status Tags ===== */
.status-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
}

.status-success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success-color);
}

.status-error {
  background: rgba(239, 68, 68, 0.15);
  color: var(--error-color);
}

.status-processing {
  background: rgba(59, 130, 246, 0.15);
  color: var(--info-color);
}

.status-pending {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning-color);
}

/* Pulse animation for processing status */
.status-processing::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--info-color);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

/* ===== Login Page ===== */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 420px;
  padding: 48px 40px;
}

.login-header {
  text-align: center;
  margin-bottom: 40px;
}

.login-logo {
  font-size: 48px;
  margin-bottom: 16px;
}

.login-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: 15px;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

.login-btn {
  margin-top: 12px;
  padding: 16px;
  font-size: 16px;
}

.login-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--error-color);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  text-align: center;
}

/* ===== Main Layout ===== */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
}

.header-logo-icon {
  font-size: 28px;
}

.header-user {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
}

.user-avatar {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: white;
}

.btn-logout {
  padding: 8px 16px;
  font-size: 14px;
}

/* ===== Main Content ===== */
.main-content {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding: 32px;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

@media (max-width: 1024px) {
  .main-content {
    grid-template-columns: 1fr;
  }
}

/* ===== Create Task Section ===== */
.create-section {
  padding: 32px;
}

.section-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}

.upload-area:hover {
  border-color: var(--primary-color);
  background: rgba(99, 102, 241, 0.05);
}

.upload-area.drag-over {
  border-color: var(--primary-color);
  background: rgba(99, 102, 241, 0.1);
}

.upload-icon {
  font-size: 56px;
  margin-bottom: 16px;
}

.upload-text {
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.upload-hint {
  font-size: 13px;
  color: var(--text-muted);
}

.upload-input {
  display: none;
}

.preview-container {
  position: relative;
  margin-bottom: 24px;
}

.preview-image {
  width: 100%;
  max-height: 300px;
  object-fit: contain;
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, 0.3);
}

.preview-remove {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 32px;
  height: 32px;
  background: rgba(239, 68, 68, 0.9);
  border: none;
  border-radius: 50%;
  color: white;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.preview-remove:hover {
  background: var(--error-color);
  transform: scale(1.1);
}

.prompt-input {
  min-height: 100px;
  resize: vertical;
  margin-bottom: 20px;
}

/* ===== Mode Selector ===== */
.mode-selector {
  margin-bottom: 20px;
}

.mode-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.mode-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.mode-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
}

.mode-option input {
  display: none;
}

.mode-option:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.3);
}

.mode-option.active {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--primary-color);
}

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

.mode-text {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

.submit-btn {
  width: 100%;
  padding: 16px;
  font-size: 16px;
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* ===== Records Section ===== */
.records-section {
  padding: 32px;
  max-height: calc(100vh - 140px);
  overflow-y: auto;
}

.records-section::-webkit-scrollbar {
  width: 6px;
}

.records-section::-webkit-scrollbar-track {
  background: transparent;
}

.records-section::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

/* ===== History List ===== */
.history-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.history-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: rgba(51, 65, 85, 0.4);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.history-item:hover {
  background: rgba(51, 65, 85, 0.55);
}

.history-error {
  border-left: 3px solid var(--error-color);
}

.history-success {
  border-left: 3px solid var(--success-color);
}

.history-processing,
.history-pending {
  border-left: 3px solid var(--info-color);
}

/* 状态图标 */
.history-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.icon-loading {
  width: 22px;
  height: 22px;
  border: 2px solid rgba(59, 130, 246, 0.3);
  border-top-color: var(--info-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* 信息区域 */
.history-info {
  flex: 1;
  min-width: 0;
}

.history-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.history-error .history-title {
  color: var(--error-color);
}

.history-success .history-title {
  color: var(--success-color);
}

.history-msg {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 操作按钮 */
.history-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.btn-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.btn-preview {
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary-color);
}

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

.btn-download {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success-color);
}

.btn-download:hover {
  background: var(--success-color);
  color: white;
}

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-muted);
}

.empty-state .empty-icon {
  font-size: 56px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state p {
  font-size: 15px;
}

.empty-hint {
  font-size: 13px !important;
  margin-top: 8px;
  opacity: 0.7;
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-box {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  max-width: 800px;
  width: 100%;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  font-size: 16px;
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--error-color);
  color: white;
}

.modal-body {
  background: #000;
}

.modal-video {
  width: 100%;
  max-height: 60vh;
  display: block;
}

.modal-footer {
  display: flex;
  justify-content: center;
  gap: 12px;
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
}

/* ===== Loading Spinner ===== */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ===== Fade Animation ===== */
.fade-enter-active,
.fade-leave-active {
  transition: opacity 0.3s ease;
}

.fade-enter,
.fade-leave-to {
  opacity: 0;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .app-header {
    padding: 12px 16px;
  }

  .main-content {
    padding: 16px;
    gap: 16px;
  }

  .create-section,
  .records-section {
    padding: 20px;
  }

  .login-card {
    padding: 32px 24px;
  }

  .history-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .history-actions {
    width: 100%;
    margin-top: 12px;
  }

  .btn-action {
    flex: 1;
    justify-content: center;
  }

  .modal-video {
    max-height: 50vh;
  }
}