:root {
  --bg-dark: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-card-hover: rgba(51, 65, 85, 0.8);
  --border-color: rgba(255, 255, 255, 0.1);
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.3);
  --accent: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --glass-blur: blur(16px);
  --radius: 12px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  background: var(--bg-dark);
  background-image: 
    radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
  color: var(--text-main);
  font-family: var(--font-family);
  min-height: 100vh;
  overflow-x: hidden;
}

.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: var(--glass-blur);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1rem;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  margin-bottom: 2rem;
}

.brand-icon {
  font-size: 1.8rem;
  background: linear-gradient(135deg, #3b82f6, #10b981);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
}

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

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 1rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.nav-item:hover {
  background: var(--bg-card-hover);
  color: var(--text-main);
}

.nav-item.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.nav-item .icon {
  font-size: 1.1rem;
}

.sidebar-footer {
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

/* Main Content */
.main-content {
  flex: 1;
  padding: 2rem;
  overflow-y: auto;
}

.top-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.header-title h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.header-title p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.oauth-badges {
  display: flex;
  gap: 1rem;
}

.oauth-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--danger);
}

.oauth-badge.connected .badge-dot {
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}

/* Tabs */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Cards & Glassmorphism */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.card-header h3 {
  font-size: 1.15rem;
  font-weight: 600;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.stat-value.highlight {
  color: #60a5fa;
}

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

/* Progress Bar */
.progress-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.progress-bar-bg {
  width: 100%;
  height: 14px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 7px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #10b981);
  border-radius: 7px;
  transition: width 0.3s ease;
  box-shadow: 0 0 12px var(--primary-glow);
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.data-table th,
.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.data-table tbody tr:hover {
  background: var(--bg-card-hover);
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 2rem !important;
}

/* Forms & Controls */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
}

.form-group input,
.form-group select {
  padding: 0.75rem 1rem;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-main);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
}

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

.mapping-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.folder-picker-box {
  background: rgba(15, 23, 42, 0.6);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
}

.picker-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.selected-folder-info {
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 1rem;
  word-break: break-all;
}

.mapping-arrow {
  font-size: 1.5rem;
}

.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.settings-box {
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.settings-box h4 {
  margin-bottom: 1rem;
  color: #60a5fa;
}

/* Buttons */
.btn {
  padding: 0.65rem 1.25rem;
  border: none;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
}

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

.btn-full {
  width: 100%;
}

.btn-large {
  padding: 0.85rem 2rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
}

/* Badges / Status Pills */
.status-pill {
  padding: 0.25rem 0.65rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.status-pill.COMPLETED {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
}

.status-pill.RUNNING,
.status-pill.TRANSFERRING {
  background: rgba(59, 130, 246, 0.2);
  color: #60a5fa;
}

.status-pill.FAILED {
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
}

.status-pill.PENDING,
.status-pill.CREATED {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 100;
  justify-content: center;
  align-items: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

.modal-body {
  flex: 1;
  overflow-y: auto;
  min-height: 300px;
}

.folder-breadcrumbs {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.folder-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.folder-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
}

.folder-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}