/* ==========================================================================
   PaddleOCR Pipeline Web UI Stylesheet (Vanilla CSS)
   ========================================================================== */

:root {
  --bg-base: #0b0f19;
  --bg-card: rgba(18, 24, 38, 0.75);
  --bg-card-hover: rgba(24, 32, 50, 0.85);
  --bg-input: rgba(13, 17, 28, 0.6);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(99, 102, 241, 0.35);

  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.05);
  --shadow-glow: 0 0 25px -5px rgba(99, 102, 241, 0.35);
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-base);
  background-image: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.12) 0px, transparent 50%),
    radial-gradient(at 50% 50%, rgba(15, 23, 42, 0.5) 0px, transparent 100%);
  background-attachment: fixed;
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* App Container */
.app-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 20px 48px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* Header & Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, #fff, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: block;
}

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

.server-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
}

/* Cards & Layout */
.main-layout {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.card-header {
  margin-bottom: 22px;
}

.card-header.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.01em;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: block;
  margin-top: 4px;
}

/* Drop Zone */
.drop-zone {
  position: relative;
  border: 2px dashed rgba(99, 102, 241, 0.3);
  background: var(--bg-input);
  border-radius: var(--radius-md);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.05);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.15);
}

.file-input-hidden {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  z-index: 5;
}

.upload-icon-anim {
  color: var(--accent-primary);
  margin-bottom: 14px;
  transition: var(--transition);
}

.drop-zone:hover .upload-icon-anim {
  transform: translateY(-4px);
  color: var(--accent-cyan);
}

.drop-prompt {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-main);
  margin-bottom: 6px;
}

.browse-link {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.drop-hint {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* File Selected Badge */
.file-badge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  margin-top: 8px;
  animation: fadeIn 0.3s ease;
  position: relative;
  z-index: 10;
}

.file-badge-info {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--accent-cyan);
}

.file-meta {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.file-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  max-width: 500px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-size {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.btn-icon.remove-file {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
  transition: var(--transition);
}

.btn-icon.remove-file:hover {
  color: var(--accent-rose);
}

/* Advanced Options */
.advanced-options {
  margin: 18px 0;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.advanced-summary {
  padding: 12px 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  font-weight: 500;
}

.advanced-summary:hover {
  color: var(--text-main);
}

.advanced-body {
  padding: 16px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.text-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 0.85rem;
  font-family: 'JetBrains Mono', monospace;
  outline: none;
  transition: var(--transition);
}

.text-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.form-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.checkbox-input {
  accent-color: var(--accent-primary);
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-primary-hover));
  color: #fff;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-subtle);
  color: var(--text-main);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-success {
  background: linear-gradient(135deg, var(--accent-emerald), #059669);
  color: #fff;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

.btn-block {
  width: 100%;
}

/* Active Running Job Widget */
.active-job-container {
  margin-bottom: 24px;
}

.active-job-card {
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.9), rgba(15, 23, 42, 0.9));
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-glow);
}

.active-job-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.pulse-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.7); }
  70% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(6, 182, 212, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(6, 182, 212, 0); }
}

.active-job-title-group {
  flex: 1;
  min-width: 0;
}

.active-job-filename {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.active-job-id {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
}

.badge {
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-processing {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.badge-completed {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-queued {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-failed {
  background: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

/* Progress Bar */
.progress-bar-container {
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 12px;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-cyan));
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.5);
}

.active-job-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.active-timer {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent-cyan);
  font-weight: 600;
}

/* Jobs History List */
.jobs-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.job-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: var(--transition);
}

.job-item:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
}

.job-item-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  flex: 1;
}

.job-item-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.job-item-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.job-item-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.empty-jobs {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal {
  max-width: 640px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid var(--border-highlight);
  box-shadow: var(--shadow-glow);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.close-modal {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.6rem;
  cursor: pointer;
}

.close-modal:hover {
  color: #fff;
}

.modal-intro {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.api-doc-section {
  margin-bottom: 22px;
}

.api-endpoint-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.method-post {
  background: rgba(99, 102, 241, 0.2);
  color: var(--accent-primary);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-family: 'JetBrains Mono', monospace;
}

.method-get {
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-emerald);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-family: 'JetBrains Mono', monospace;
}

.api-doc-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.code-box {
  background: #060911;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: #38bdf8;
  overflow-x: auto;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  margin-top: 24px;
}

/* Footer */
.app-footer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-dim);
  padding-top: 12px;
}

/* Utilities */
.hidden {
  display: none !important;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 640px) {
  .navbar { flex-direction: column; align-items: flex-start; gap: 14px; }
  .header-actions { width: 100%; justify-content: space-between; }
  .job-item { flex-direction: column; align-items: flex-start; }
}