:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --success: #16a34a;
  --success-light: #dcfce7;
  --warning: #d97706;
  --warning-light: #fef3c7;
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --card-bg: rgba(255, 255, 255, 0.92);
  --border-color: rgba(226, 232, 240, 0.8);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
}

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

body {
  font-family: 'Plus Jakarta Sans', 'Noto Sans Gujarati', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: #f8fafc;
  color: var(--text-main);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.5;
}

/* Background gradient blobs */
.background-decor {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
}

.blob-1 {
  top: -10%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: #bfdbfe;
}

.blob-2 {
  bottom: -15%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: #fed7aa;
}

.blob-3 {
  top: 35%;
  right: 15%;
  width: 400px;
  height: 400px;
  background: #e9d5ff;
}

/* Container */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

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

.logo-icon {
  font-size: 28px;
  background: #ffffff;
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.app-header h1 {
  font-size: 22px;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.5px;
}

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

.header-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #ffffff;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: #334155;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: #16a34a;
  border-radius: 50%;
  display: inline-block;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(22, 163, 74, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(22, 163, 74, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(22, 163, 74, 0); }
}

/* Glass Card */
.glass-card {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-lg);
  margin-bottom: 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* Tabs Navigation */
.tabs-nav {
  display: flex;
  background: #e2e8f0;
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 20px;
  gap: 4px;
}

.tab-btn {
  flex: 1;
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.tab-btn:hover {
  color: var(--text-main);
}

.tab-btn.active {
  background: #ffffff;
  color: #0f172a;
  box-shadow: var(--shadow-sm);
}

.tab-pane {
  display: none;
}

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

/* Forms & Inputs */
.form-group {
  margin-bottom: 16px;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #334155;
  margin-bottom: 6px;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.custom-input {
  width: 100%;
  padding: 12px 14px;
  font-size: 14px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #ffffff;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  font-family: inherit;
}

.custom-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.select-input {
  cursor: pointer;
}

.btn-clear {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  font-size: 14px;
  color: #94a3b8;
  cursor: pointer;
  padding: 4px;
}

.btn-clear:hover {
  color: #475569;
}

.hint-text {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 600px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

/* Token Collapsible */
.token-collapsible {
  margin-bottom: 18px;
}

.token-toggle {
  background: none;
  border: none;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0;
}

.token-box {
  margin-top: 8px;
}

/* Action Buttons */
.action-row {
  display: flex;
  gap: 10px;
}

button {
  font-family: inherit;
}

.btn-primary {
  flex: 1;
  background: var(--primary);
  color: #ffffff;
  border: none;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 700;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}

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

.btn-primary:active {
  transform: translateY(1px);
}

.btn-secondary {
  background: #ffffff;
  color: #334155;
  border: 1px solid #cbd5e1;
  padding: 12px 18px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.btn-secondary:hover {
  background: #f1f5f9;
  border-color: #94a3b8;
}

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.alert-success {
  background: var(--success-light);
  color: #166534;
  border: 1px solid #bbf7d0;
}

.alert-error {
  background: var(--danger-light);
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-info {
  background: var(--primary-light);
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

/* Loader */
.loader-container {
  text-align: center;
  padding: 24px 0;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 4px solid #e2e8f0;
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 10px;
}

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

/* Results Area */
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid #f1f5f9;
  margin-bottom: 16px;
}

.results-header h2 {
  font-size: 18px;
  font-weight: 800;
  color: #0f172a;
}

.count-badge {
  display: inline-block;
  background: #dcfce7;
  color: #166534;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 6px;
  margin-top: 4px;
}

.batch-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-zip {
  background: #16a34a;
  color: #ffffff;
  border: none;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 700;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 2px 4px rgba(22, 163, 74, 0.2);
  transition: background 0.15s;
}

.btn-zip:hover {
  background: #15803d;
}

.btn-browser-batch {
  background: #2563eb;
  color: #ffffff;
  border: none;
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: background 0.15s;
}

.btn-browser-batch:hover {
  background: #1d4ed8;
}

.btn-copy-links {
  background: #ffffff;
  color: #475569;
  border: 1px solid #cbd5e1;
  padding: 10px 12px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-copy-links:hover {
  background: #f1f5f9;
}

/* Progress bar */
.progress-container {
  margin: 12px 0 16px;
  background: #e2e8f0;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  height: 20px;
}

.progress-bar {
  width: 0%;
  height: 100%;
  background: #2563eb;
  transition: width 0.2s ease;
}

.progress-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 10px;
  font-weight: 700;
  color: #ffffff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

/* PDF List Grid */
.pdf-grid {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pdf-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  gap: 12px;
  transition: transform 0.15s, box-shadow 0.15s;
}

.pdf-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  border-color: #cbd5e1;
}

.pdf-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
}

.pdf-num {
  font-size: 12px;
  font-weight: 700;
  color: #64748b;
  min-width: 28px;
}

.pdf-icon-badge {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: #fee2e2;
  color: #dc2626;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  flex-shrink: 0;
}

.pdf-details {
  flex: 1;
  min-width: 0;
}

.pdf-title {
  font-size: 14px;
  font-weight: 600;
  color: #1e293b;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pdf-meta {
  font-size: 11px;
  color: #94a3b8;
  margin-top: 2px;
}

.btn-item-download {
  background: #eff6ff;
  color: #2563eb;
  border: 1px solid #bfdbfe;
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 700;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  transition: all 0.15s;
}

.btn-item-download:hover {
  background: #2563eb;
  color: #ffffff;
  border-color: #2563eb;
}

/* Footer */
.app-footer {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 20px;
}