/* ================================================================
   ThinkingBottle Abstract Review — Premium Dark Glassmorphism Theme
   ================================================================ */

/* ---------- Design Tokens ---------- */
:root {
  /* Palette */
  --bg-deep: #0a0e17;
  --bg-surface: #111827;
  --bg-card: rgba(17, 24, 39, 0.65);
  --bg-card-hover: rgba(30, 41, 59, 0.7);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-glass-hover: rgba(255, 255, 255, 0.07);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-active: rgba(255, 255, 255, 0.15);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  --accent-primary: #6366f1;
  --accent-primary-glow: rgba(99, 102, 241, 0.35);
  --accent-hover: #818cf8;
  --accent-success: #10b981;
  --accent-success-glow: rgba(16, 185, 129, 0.3);
  --accent-warning: #f59e0b;
  --accent-warning-glow: rgba(245, 158, 11, 0.3);
  --accent-danger: #ef4444;
  --accent-danger-glow: rgba(239, 68, 68, 0.3);
  --accent-maybe: #8b5cf6;
  --accent-maybe-glow: rgba(139, 92, 246, 0.3);
  --accent-info: #06b6d4;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);
  --shadow-glow-primary: 0 0 30px var(--accent-primary-glow);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --fs-xs: 0.75rem;
  --fs-sm: 0.8125rem;
  --fs-base: 0.9375rem;
  --fs-md: 1.0625rem;
  --fs-lg: 1.25rem;
  --fs-xl: 1.5rem;
  --fs-2xl: 1.875rem;
  --fs-3xl: 2.25rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  /* Radii */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --navbar-height: 4rem;
  --max-width: 1280px;
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  color: var(--text-primary);
  background: var(--bg-deep);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Gradient Background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(99,102,241,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(139,92,246,0.08) 0%, transparent 50%),
    radial-gradient(ellipse 50% 40% at 50% 50%, rgba(6,182,212,0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

a { color: var(--accent-hover); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

button { cursor: pointer; font-family: inherit; }

input, select, textarea, button { font-size: inherit; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.12);
  border-radius: 100px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* Firefox */
* { scrollbar-width: thin; scrollbar-color: rgba(255,255,255,0.12) transparent; }

/* ---------- Utility ---------- */
.hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}
.text-muted { color: var(--text-muted); font-size: var(--fs-sm); }
.text-secondary { color: var(--text-secondary); }
.text-warning { color: var(--accent-warning); }
.text-center { text-align: center; }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.gap-4 { gap: var(--space-4); }

/* ---------- App Loader ---------- */
.app-loader {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-deep);
  z-index: 9999;
  transition: opacity var(--transition-slow);
}
.app-loader.fade-out { opacity: 0; pointer-events: none; }

.loader-content { text-align: center; }

.loader-spinner {
  width: 48px; height: 48px;
  margin: 0 auto var(--space-6);
  border: 3px solid rgba(255,255,255,0.08);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loader-text {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  letter-spacing: 0.5px;
}

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

/* ---------- Toast ---------- */
.toast-container {
  position: fixed;
  top: calc(var(--navbar-height) + var(--space-4));
  right: var(--space-4);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-lg);
  font-size: var(--fs-sm);
  color: var(--text-primary);
  max-width: 420px;
  animation: toastIn var(--transition-base) ease forwards;
  backdrop-filter: blur(16px);
}
.toast.toast-out { animation: toastOut var(--transition-base) ease forwards; }

.toast-icon { font-size: 1.25rem; flex-shrink: 0; }
.toast-message { flex: 1; }

.toast-success { border-left: 3px solid var(--accent-success); }
.toast-error   { border-left: 3px solid var(--accent-danger); }
.toast-info    { border-left: 3px solid var(--accent-info); }
.toast-maybe   { border-left: 3px solid var(--accent-maybe); }

.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0 var(--space-1);
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-base);
  line-height: 1;
}
.toast-close:hover {
  color: var(--text-primary);
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(40px); }
}

/* ---------- Navbar ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--navbar-height);
  background: rgba(10, 14, 23, 0.8);
  backdrop-filter: blur(20px) saturate(1.3);
  border-bottom: 1px solid var(--border-glass);
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: var(--fs-lg);
  color: var(--text-primary) !important;
  text-decoration: none !important;
}
.brand-icon { font-size: 1.5rem; }
.brand-text {
  background: linear-gradient(135deg, var(--text-primary), var(--accent-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-link {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-secondary) !important;
  text-decoration: none !important;
  transition: all var(--transition-fast);
}
.nav-link:hover {
  color: var(--text-primary) !important;
  background: var(--bg-glass-hover);
}
.nav-link.active {
  color: var(--text-primary) !important;
  background: var(--bg-glass-hover);
}

.navbar-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.user-avatar {
  width: 34px; height: 34px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-maybe));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--fs-sm);
  color: white;
  flex-shrink: 0;
}

.user-email {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-role-badge {
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--accent-primary-glow);
  color: var(--accent-hover);
}

/* ---------- Main Content ---------- */
.main-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
  min-height: calc(100vh - var(--navbar-height));
}

/* ---------- Glass Card ---------- */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(24px) saturate(1.2);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}
.glass-card:hover {
  border-color: var(--border-glass-active);
}
.glass-card.no-hover:hover {
  border-color: var(--border-glass);
}

/* ---------- Page Header ---------- */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}
.page-title {
  font-size: var(--fs-2xl);
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.2;
}
.page-subtitle {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  margin-top: var(--space-2);
}

/* ---------- Section ---------- */
.section-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: var(--space-6);
}
.section-subtitle {
  font-size: var(--fs-base);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--text-secondary);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--fs-sm);
  line-height: 1.4;
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), #7c3aed);
  color: white;
  box-shadow: 0 2px 12px var(--accent-primary-glow);
}
.btn-primary:hover:not(:disabled) {
  box-shadow: 0 4px 20px var(--accent-primary-glow);
  transform: translateY(-1px);
}

.btn-success {
  background: linear-gradient(135deg, var(--accent-success), #059669);
  color: white;
  box-shadow: 0 2px 12px var(--accent-success-glow);
}
.btn-success:hover:not(:disabled) {
  box-shadow: 0 4px 20px var(--accent-success-glow);
  transform: translateY(-1px);
}

.btn-danger {
  background: linear-gradient(135deg, var(--accent-danger), #dc2626);
  color: white;
  box-shadow: 0 2px 12px var(--accent-danger-glow);
}
.btn-danger:hover:not(:disabled) {
  box-shadow: 0 4px 20px var(--accent-danger-glow);
  transform: translateY(-1px);
}

.btn-warning {
  background: linear-gradient(135deg, var(--accent-warning), #d97706);
  color: var(--text-inverse);
  box-shadow: 0 2px 12px var(--accent-warning-glow);
}
.btn-warning:hover:not(:disabled) {
  box-shadow: 0 4px 20px var(--accent-warning-glow);
  transform: translateY(-1px);
}

.btn-maybe {
  background: linear-gradient(135deg, var(--accent-maybe), #7c3aed);
  color: white;
  box-shadow: 0 2px 12px var(--accent-maybe-glow);
}
.btn-maybe:hover:not(:disabled) {
  box-shadow: 0 4px 20px var(--accent-maybe-glow);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-glass);
}
.btn-ghost:hover:not(:disabled) {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
  border-color: var(--border-glass-active);
}

.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--fs-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--fs-base);
  border-radius: var(--radius-lg);
}

.btn-icon {
  width: 36px; height: 36px;
  padding: 0;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* ---------- Form Elements ---------- */
.form-group {
  margin-bottom: var(--space-5);
}
.form-group label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}
.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  transition: all var(--transition-fast);
}
.form-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-glow);
}
.form-input::placeholder { color: var(--text-muted); }

select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8'%3E%3Cpath d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* Toggle Switch */
.toggle-label {
  display: flex !important;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  font-size: var(--fs-sm);
  color: var(--text-primary) !important;
}
.toggle-input { display: none; }
.toggle-switch {
  position: relative;
  width: 44px; height: 24px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
  flex-shrink: 0;
}
.toggle-switch::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  background: white;
  border-radius: 50%;
  transition: transform var(--transition-fast);
}
.toggle-input:checked + .toggle-switch {
  background: var(--accent-primary);
}
.toggle-input:checked + .toggle-switch::after {
  transform: translateX(20px);
}

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  animation: fadeIn var(--transition-fast) ease;
}

.modal {
  width: 100%;
  padding: var(--space-6) var(--space-8);
  animation: modalIn var(--transition-base) ease;
  max-height: 85vh;
  overflow-y: auto;
}
.modal-sm { max-width: 480px; }
.modal-md { max-width: 600px; }
.modal-lg { max-width: 860px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}
.modal-header h2 {
  font-size: var(--fs-xl);
  font-weight: 700;
}
.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  line-height: 1;
  padding: var(--space-1);
  transition: color var(--transition-fast);
}
.modal-close:hover { color: var(--text-primary); }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* ---------- Project Cards Grid ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-6);
}

.project-card {
  padding: var(--space-6);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-maybe));
  opacity: 0;
  transition: opacity var(--transition-base);
}
.project-card:hover::before { opacity: 1; }
.project-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.project-card-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.project-card-desc {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  margin-bottom: var(--space-5);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- Progress Bar ---------- */
.progress-bar-wrapper {
  margin-bottom: var(--space-3);
}
.progress-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}
.progress-bar-track {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-maybe));
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}
.progress-bar-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 2s infinite;
}
@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.progress-bar-fill.success { background: linear-gradient(90deg, var(--accent-success), #34d399); }
.progress-bar-fill.warning { background: linear-gradient(90deg, var(--accent-warning), #fbbf24); }
.progress-bar-fill.danger  { background: linear-gradient(90deg, var(--accent-danger), #f87171); }

/* ---------- Stats Cards ---------- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}
.stat-card {
  padding: var(--space-5);
  text-align: center;
}
.stat-value {
  font-size: var(--fs-3xl);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.1;
}
.stat-value.primary { color: var(--accent-hover); }
.stat-value.success { color: var(--accent-success); }
.stat-value.danger  { color: var(--accent-danger); }
.stat-value.warning { color: var(--accent-warning); }
.stat-value.maybe   { color: var(--accent-maybe); }

.stat-label {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: var(--space-2);
  font-weight: 600;
}

/* ---------- Tabs ---------- */
.tabs {
  display: flex;
  gap: var(--space-1);
  background: var(--bg-glass);
  border-radius: var(--radius-lg);
  padding: var(--space-1);
  margin-bottom: var(--space-8);
  border: 1px solid var(--border-glass);
  overflow-x: auto;
}
.tab-btn {
  flex: 1;
  padding: var(--space-3) var(--space-5);
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: var(--fs-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.tab-btn:hover {
  color: var(--text-primary);
  background: var(--bg-glass-hover);
}
.tab-btn.active {
  background: var(--accent-primary);
  color: white;
  box-shadow: 0 2px 8px var(--accent-primary-glow);
}

/* ---------- Review Card ---------- */
.review-container {
  max-width: 780px;
  margin: 0 auto;
}

.review-progress-bar {
  margin-bottom: var(--space-6);
}

.review-card {
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
}
.review-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-info), var(--accent-maybe));
}

.review-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}
.review-meta-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  color: var(--text-secondary);
}
.review-meta-chip strong {
  color: var(--text-primary);
  font-weight: 600;
}

.review-title {
  font-size: var(--fs-xl);
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: var(--space-4);
}

.review-authors {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  line-height: 1.5;
}

.review-abstract-label {
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}
.review-abstract {
  font-size: var(--fs-base);
  line-height: 1.8;
  color: var(--text-secondary);
}

.review-existing-decision {
  margin-top: var(--space-6);
  padding: var(--space-4);
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
}
.review-existing-decision .decision-label {
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.review-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
  flex-wrap: wrap;
}
.review-actions .btn {
  min-width: 140px;
}

.review-shortcuts {
  margin-top: var(--space-6);
  text-align: center;
  font-size: var(--fs-xs);
  color: var(--text-muted);
}
.review-shortcuts kbd {
  display: inline-block;
  padding: 2px 6px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-glass);
  border-radius: 4px;
  font-family: inherit;
  font-size: var(--fs-xs);
  color: var(--text-secondary);
}

.review-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-6);
}

.review-empty {
  text-align: center;
  padding: var(--space-12) var(--space-8);
}
.review-empty-icon { font-size: 3rem; margin-bottom: var(--space-4); }
.review-empty-title { font-size: var(--fs-xl); font-weight: 700; margin-bottom: var(--space-2); }
.review-empty-text { color: var(--text-secondary); }

/* ---------- Articles Table ---------- */
.articles-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  align-items: center;
}
.articles-toolbar .form-input {
  max-width: 260px;
}
.filter-pills {
  display: flex;
  gap: var(--space-2);
}
.filter-pill {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-glass);
  background: transparent;
  color: var(--text-secondary);
  font-size: var(--fs-xs);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.filter-pill:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}
.filter-pill.active {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glass);
}
.data-table {
  width: 100%;
  border-collapse: collapse;
}
.data-table th,
.data-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--border-glass);
  font-size: var(--fs-sm);
}
.data-table th {
  background: rgba(255,255,255,0.03);
  color: var(--text-muted);
  font-weight: 600;
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td {
  background: rgba(255,255,255,0.02);
}
.data-table .truncate {
  max-width: 350px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.decision-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 600;
}
.decision-badge.include {
  background: var(--accent-success-glow);
  color: var(--accent-success);
}
.decision-badge.exclude {
  background: var(--accent-danger-glow);
  color: var(--accent-danger);
}
.decision-badge.maybe {
  background: var(--accent-maybe-glow);
  color: var(--accent-maybe);
}
.decision-badge.conflict {
  background: var(--accent-warning-glow);
  color: var(--accent-warning);
}
.decision-badge.unreviewed {
  background: var(--bg-glass);
  color: var(--text-muted);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
}
.pagination-btn {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  background: transparent;
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  transition: all var(--transition-fast);
}
.pagination-btn:hover:not(:disabled) {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}
.pagination-btn.active {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}
.pagination-btn:disabled { opacity: 0.3; cursor: not-allowed; }

.pagination-info {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  padding: 0 var(--space-3);
}

/* ---------- Dropzone ---------- */
.dropzone {
  border: 2px dashed var(--border-glass);
  border-radius: var(--radius-xl);
  padding: var(--space-12) var(--space-8);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
}
.dropzone:hover,
.dropzone.drag-over {
  border-color: var(--accent-primary);
  background: var(--accent-primary-glow);
}
.dropzone-icon { font-size: 3rem; margin-bottom: var(--space-4); }
.dropzone-text { font-size: var(--fs-base); font-weight: 500; color: var(--text-primary); }
.dropzone-sub { font-size: var(--fs-sm); color: var(--text-muted); margin-top: var(--space-2); }
.dropzone-link {
  color: var(--accent-hover);
  cursor: pointer;
  text-decoration: underline;
}

.csv-file-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  margin-bottom: var(--space-5);
}

.column-mapping-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}
.column-mapping-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
}
.column-mapping-item .col-name {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  min-width: 100px;
}
.column-mapping-item select {
  flex: 1;
  min-width: 0;
}

/* ---------- Settings Panel ---------- */
.settings-section {
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}
.settings-section-title {
  font-size: var(--fs-md);
  font-weight: 700;
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-glass);
}
.settings-row:last-child { border-bottom: none; }

.reviewer-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
}
.reviewer-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* ---------- Admin Panel ---------- */
.admin-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glass);
}

/* ---------- Inline Spinner ---------- */
.inline-spinner {
  display: inline-block;
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.1);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}

.page-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-12);
}

/* ---------- Empty States ---------- */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-8);
}
.empty-state-icon { font-size: 3rem; margin-bottom: var(--space-4); opacity: 0.7; }
.empty-state-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.empty-state-text {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  margin-bottom: var(--space-6);
}

/* ---------- Animations ---------- */
.fade-in {
  animation: fadeIn var(--transition-base) ease;
}
.slide-up {
  animation: slideUp var(--transition-base) ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .navbar-inner { padding: 0 var(--space-4); }
  .main-content { padding: var(--space-4); }
  .projects-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .review-actions .btn { min-width: 100px; }
  .column-mapping-grid { grid-template-columns: 1fr; }
  .page-header { flex-direction: column; }
  .user-email { display: none; }
  .modal { padding: var(--space-4); }
  .articles-toolbar { flex-direction: column; align-items: stretch; }
  .articles-toolbar .form-input { max-width: none; }
}

/* ---------- Credentials Login Screen ---------- */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  width: 100%;
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at center, #1e1b4b 0%, #09090b 100%);
  z-index: 9999;
  padding: var(--space-4);
  box-sizing: border-box;
}

.login-card {
  width: 100%;
  max-width: 400px;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  animation: slideUp var(--transition-base) ease;
}

.login-header {
  text-align: center;
  margin-bottom: var(--space-6);
}

.login-logo {
  display: inline-block;
  font-size: 3.5rem;
  margin-bottom: var(--space-3);
  filter: drop-shadow(0 0 10px rgba(129, 140, 248, 0.4));
  animation: logoGlow 3s ease-in-out infinite alternate;
}

@keyframes logoGlow {
  0% { transform: scale(1); filter: drop-shadow(0 0 5px rgba(129,140,248,0.2)); }
  100% { transform: scale(1.05); filter: drop-shadow(0 0 20px rgba(129,140,248,0.6)); }
}

.login-header h1 {
  font-size: var(--fs-2xl);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin: 0;
  color: var(--text-primary);
}

.login-subtitle {
  color: var(--text-muted);
  font-size: var(--fs-sm);
  margin-top: var(--space-1);
}

.login-form .form-group {
  margin-bottom: var(--space-4);
}

.login-error-message {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  margin-bottom: var(--space-4);
  text-align: center;
  font-weight: 500;
}

.login-footer {
  text-align: center;
  margin-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: var(--space-4);
}

.login-footer p {
  font-size: var(--fs-xs);
  margin: 0;
}

.login-card .form-input {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.08);
}
.login-card .form-input:focus {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-hover);
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.15);
}

.admin-header-actions {
  display: flex;
  justify-content: flex-end;
  margin-bottom: var(--space-4);
}