/* ============================================================
   Number Switcher — Premium Dark Theme
   ============================================================ */

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

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(18, 18, 28, 0.7);
  --bg-card-hover: rgba(24, 24, 38, 0.8);
  --bg-input: rgba(255, 255, 255, 0.04);
  --bg-input-focus: rgba(255, 255, 255, 0.08);

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-medium: rgba(255, 255, 255, 0.1);
  --border-accent: rgba(99, 102, 241, 0.4);

  --text-primary: #f1f1f6;
  --text-secondary: #8b8b9e;
  --text-muted: #55556a;

  --accent-primary: #6366f1;
  --accent-secondary: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.25);

  --success: #22c55e;
  --success-bg: rgba(34, 197, 94, 0.12);
  --success-border: rgba(34, 197, 94, 0.3);

  --error: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.12);
  --error-border: rgba(239, 68, 68, 0.3);

  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px var(--accent-glow);

  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  font-size: 16px;
}

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

/* ── Animated Background Orbs ── */
.bg-effects {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.15;
  animation: float 20s ease-in-out infinite;
}

.orb-1 {
  width: 500px; height: 500px;
  background: var(--accent-primary);
  top: -10%; left: -5%;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px; height: 400px;
  background: #a855f7;
  bottom: -10%; right: -5%;
  animation-delay: -7s;
}

.orb-3 {
  width: 350px; height: 350px;
  background: #06b6d4;
  top: 40%; left: 50%;
  animation-delay: -14s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -40px) scale(1.05); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(40px, 30px) scale(1.02); }
}

/* ── App Container ── */
.app-container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header ── */
.header {
  padding: 24px 0;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 32px;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-icon {
  position: relative;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent-primary), #a855f7);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-glow);
}

.logo-icon svg {
  width: 24px;
  height: 24px;
}

.logo-pulse {
  position: absolute;
  inset: -3px;
  border-radius: var(--radius-md);
  border: 2px solid var(--accent-primary);
  opacity: 0;
  animation: pulse-ring 2s ease-out infinite;
}

@keyframes pulse-ring {
  0% { opacity: 0.6; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.3); }
}

.header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 2px;
}

.header-stats {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.stat-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-size: 0.8rem;
}

.stat-label {
  color: var(--text-muted);
  font-weight: 400;
}

.stat-value {
  color: var(--text-primary);
  font-weight: 600;
}

.status-pill {
  gap: 6px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--warning);
  animation: blink 1.5s ease-in-out infinite;
}

.status-dot.connected {
  background: var(--success);
  animation: none;
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.5);
}

.status-dot.error {
  background: var(--error);
  animation: none;
}

/* ── Queue Status Pill ── */
.queue-pill {
  border-color: rgba(245, 158, 11, 0.4);
  color: var(--warning);
  font-weight: 600;
  gap: 6px;
  animation: slideUp 0.3s ease-out;
}

.queue-pill.paused {
  border-color: rgba(239, 68, 68, 0.4);
  color: var(--error);
  animation: pulse-border 1.5s ease-in-out infinite;
}

@keyframes pulse-border {
  0%, 100% { border-color: rgba(239, 68, 68, 0.4); }
  50% { border-color: rgba(239, 68, 68, 0.8); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

#statusText {
  color: var(--text-secondary);
  font-weight: 500;
}

/* ── Grid Layout ── */
.main-content {
  padding-bottom: 48px;
}

.grid-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 860px) {
  .grid-layout {
    grid-template-columns: 1fr;
  }
}

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: var(--border-medium);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.card-header h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.card-header .icon {
  width: 18px;
  height: 18px;
  color: var(--accent-secondary);
}

.card-body {
  padding: 24px;
}

.badge {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success-border);
}

/* ── Form Elements ── */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.label-icon {
  width: 14px;
  height: 14px;
  color: var(--accent-secondary);
}

.select-wrapper {
  position: relative;
}

.select-wrapper select {
  width: 100%;
  padding: 12px 44px 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  appearance: none;
  transition: all var(--transition);
  outline: none;
}

.select-wrapper select:focus {
  background: var(--bg-input-focus);
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.select-wrapper select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.select-arrow {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-muted);
}

.select-arrow svg {
  width: 16px;
  height: 16px;
}

/* ── Number Display ── */
.number-display {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(168, 85, 247, 0.05));
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  margin-bottom: 20px;
  animation: slideUp 0.3s ease-out;
}

.number-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-secondary);
  margin-bottom: 6px;
}

.number-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.number-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── Inventory Info ── */
.inventory-info {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  animation: slideUp 0.3s ease-out;
}

.inventory-info .icon-sm {
  width: 16px;
  height: 16px;
  color: var(--accent-secondary);
  flex-shrink: 0;
}

.inventory-info span {
  font-weight: 600;
  color: var(--accent-secondary);
}

/* ── Switch Button ── */
.btn-switch {
  width: 100%;
  padding: 16px 24px;
  background: linear-gradient(135deg, var(--accent-primary), #7c3aed);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-switch::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn-switch:hover:not(:disabled)::before {
  opacity: 1;
}

.btn-switch:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.35);
}

.btn-switch:active:not(:disabled) {
  transform: translateY(0);
}

.btn-switch:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn-icon {
  width: 18px;
  height: 18px;
}

.btn-loader {
  display: flex;
  align-items: center;
  gap: 10px;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* ── Result Area ── */
.result-area {
  border-top: 1px solid var(--border-subtle);
  padding: 20px 24px;
  animation: slideUp 0.3s ease-out;
}

.result-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.result-success {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  border-radius: var(--radius-md);
}

.result-success .result-icon {
  width: 20px;
  height: 20px;
  color: var(--success);
  flex-shrink: 0;
  margin-top: 2px;
}

.result-error {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  border-radius: var(--radius-md);
}

.result-error .result-icon {
  width: 20px;
  height: 20px;
  color: var(--error);
  flex-shrink: 0;
  margin-top: 2px;
}

.result-text h4 {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.result-text p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.number-swap-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 12px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}

.number-swap-display .old-num {
  color: var(--text-muted);
  text-decoration: line-through;
}

.number-swap-display .arrow {
  color: var(--accent-secondary);
  font-weight: 700;
}

.number-swap-display .new-num {
  color: var(--success);
  font-weight: 700;
}

/* ── Deletion Status Badge ── */
.deletion-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 600;
  animation: slideUp 0.4s ease-out;
}

.deletion-badge.success {
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  color: var(--success);
}

.deletion-badge.warning {
  background: var(--warning-bg);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--warning);
}

/* ── History ── */
.history-card {
  display: flex;
  flex-direction: column;
}

.history-body {
  padding: 0;
  flex: 1;
  max-height: 500px;
  overflow-y: auto;
}

.history-body::-webkit-scrollbar {
  width: 4px;
}

.history-body::-webkit-scrollbar-track {
  background: transparent;
}

.history-body::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: 4px;
}

.history-list {
  display: flex;
  flex-direction: column;
}

.history-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition);
}

.history-item:hover {
  background: var(--bg-card-hover);
}

.history-item:last-child {
  border-bottom: none;
}

.history-icon-wrap {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.history-icon-wrap.success {
  background: var(--success-bg);
  color: var(--success);
}

.history-icon-wrap.error {
  background: var(--error-bg);
  color: var(--error);
}

.history-icon-wrap svg {
  width: 14px;
  height: 14px;
}

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

.history-agent {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.history-numbers {
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
  font-variant-numeric: tabular-nums;
}

.history-numbers .arrow {
  color: var(--accent-secondary);
}

.history-time {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.history-error-msg {
  font-size: 0.72rem;
  color: var(--error);
  margin-top: 2px;
}

.history-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  color: var(--text-muted);
  text-align: center;
}

.empty-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 12px;
  opacity: 0.4;
}

.history-empty p {
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--text-secondary);
}

.history-empty span {
  font-size: 0.75rem;
}

.btn-refresh {
  width: 32px;
  height: 32px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.btn-refresh svg {
  width: 14px;
  height: 14px;
}

.btn-refresh:hover {
  background: var(--bg-input-focus);
  color: var(--accent-secondary);
  border-color: var(--border-accent);
}

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
  animation: fadeIn 0.2s ease-out;
}

.modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 32px;
  max-width: 420px;
  width: 100%;
  text-align: center;
  animation: modalIn 0.3s ease-out;
  box-shadow: var(--shadow-lg);
}

.modal-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--warning-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--warning);
}

.modal-icon svg {
  width: 26px;
  height: 26px;
}

.modal-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.modal-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
}

.confirm-details {
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-bottom: 24px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-align: left;
}

.confirm-details .detail-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
}

.confirm-details .detail-label {
  color: var(--text-muted);
}

.confirm-details .detail-value {
  color: var(--text-primary);
  font-weight: 600;
}

.modal-actions {
  display: flex;
  gap: 12px;
}

.btn-cancel {
  flex: 1;
  padding: 12px 20px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-cancel:hover {
  background: var(--bg-input-focus);
  color: var(--text-primary);
}

.btn-confirm {
  flex: 1;
  padding: 12px 20px;
  background: linear-gradient(135deg, var(--accent-primary), #7c3aed);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all var(--transition);
}

.btn-confirm:hover {
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
  transform: translateY(-1px);
}

.btn-icon-sm {
  width: 16px;
  height: 16px;
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* ── Select option styles for dark theme ── */
.select-wrapper select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 8px;
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-stats {
    width: 100%;
    justify-content: flex-start;
  }

  .number-value {
    font-size: 1.3rem;
  }

  .modal-card {
    padding: 24px;
  }
}