/* --- Variables --- */

:root,
:root.dark,
:root.light {
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --bg: #000000;
  --surface: #0a0a0a;
  --surface-header: #0f0f0f;
  --surface-input: #0d0d0d;
  --surface-hover: #141414;
  --border: #1a1a1a;
  --border-focus: #0a04c9;
  --text-primary: #ffffff;
  --text-secondary: #909090;
  --text-muted: #555555;
  --accent: #0a04c9;
  --accent-hover: #0803a6;
  --accent-active: #060285;
  --accent-link: #5c8aff;
  --success: #10b981;
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.1);
  --radius: 6px;
  --radius-lg: 8px;
}

/* --- Reset --- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: none !important;
  animation: none !important;
  font-family: var(--font-family);
}

html, body {
  background-color: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.modal-open {
  overflow: hidden;
}

/* --- App Layout --- */

.app-layout {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 18px 80px;
}

/* --- Header & Brand --- */

.app-header {
  margin-bottom: 28px;
}

.brand-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}

.brand-title {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin: 0;
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
}

.brand-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  letter-spacing: -0.01em;
  line-height: 1.5;
  margin: 0;
}

.app-version {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  padding: 2px 7px;
  background-color: #111111;
  border: 1px solid var(--border);
  border-radius: 4px;
}

/* --- Boxes & Panels --- */

.box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 18px;
}

.box-error {
  border-color: var(--danger);
  background: var(--danger-bg);
  color: var(--danger);
  font-size: 14px;
  font-weight: 500;
}

.box-connecting {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* --- Password Gate Card --- */

.password-card {
  max-width: 480px;
  margin: 30px auto;
  text-align: left;
}

.card-heading {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}

.card-subtext {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.input-error-msg {
  color: var(--danger);
  font-size: 12px;
  margin-top: 6px;
}

/* --- Main Transfer Panel --- */

.transfer-panel {
  padding: 24px;
}

#transfer-div.drag-over {
  border-color: var(--accent) !important;
  background-color: rgba(10, 4, 201, 0.06) !important;
  border-style: dashed !important;
}

.share-section {
  display: flex;
  gap: 20px;
  align-items: center;
  margin-bottom: 24px;
}

@media (max-width: 580px) {
  .share-section {
    flex-direction: column;
    align-items: stretch;
  }
  .qr-frame {
    margin: 0 auto 12px;
  }
}

.qr-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000000;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  flex-shrink: 0;
}

.qr-frame canvas {
  width: 140px;
  height: 140px;
  display: block;
}

.share-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.status-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
}

.status-waiting {
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.status-connected {
  color: var(--success);
}

.badge-protected {
  color: var(--accent-link);
  font-size: 12px;
  font-weight: 600;
}

.share-hint {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

/* --- Input Groups & URL Display --- */

.input-group {
  display: flex;
  align-items: stretch;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--surface-input);
}

.input-group:focus-within {
  border-color: var(--border-focus);
}

.form-control {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 13px;
  padding: 10px 14px;
  outline: none;
}

.form-control::placeholder {
  color: var(--text-muted);
}

.url-display {
  color: var(--accent-link);
  font-size: 13px;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.input-group-text,
.copy-btn,
.copied-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  background-color: #141414;
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 600;
  border: none;
  border-left: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
}

.input-group-text:hover,
.copy-btn:hover {
  background-color: #1e1e1e;
}

.copied-btn {
  color: var(--accent-link);
}

.input-btn-toggle {
  background-color: #141414 !important;
  color: var(--text-secondary) !important;
  border: none !important;
  border-left: 1px solid var(--border) !important;
  padding: 0 14px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  border-radius: 0 !important;
}

.input-btn-toggle:hover {
  background-color: #1c1c1c !important;
  color: #ffffff !important;
}

/* --- Buttons --- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  height: 38px;
  padding: 0 18px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  user-select: none;
  text-decoration: none;
}

.btn-block {
  width: 100%;
  margin-top: 14px;
}

.btn-primary {
  background-color: var(--accent) !important;
  border-color: var(--accent) !important;
  color: #ffffff !important;
}

.btn-primary:hover {
  background-color: var(--accent-hover) !important;
  border-color: var(--accent-hover) !important;
}

.btn-primary:active {
  background-color: var(--accent-active) !important;
  border-color: var(--accent-active) !important;
}

.btn-secondary {
  background-color: #141414 !important;
  border-color: var(--border) !important;
  color: #cccccc !important;
}

.btn-secondary:hover {
  background-color: #1c1c1c !important;
  color: #ffffff !important;
}

.btn-danger {
  background-color: #2b0d10 !important;
  border-color: #4c1d22 !important;
  color: #f87171 !important;
}

.btn-danger:hover {
  background-color: #3b1115 !important;
  color: #fca5a5 !important;
}

.btn-sm {
  height: 26px !important;
  padding: 0 10px !important;
  font-size: 11px !important;
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 16px;
  cursor: pointer;
  padding: 4px 8px;
  line-height: 1;
}

.btn-close:hover {
  color: #ffffff;
}

.actions-row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 4px;
}

/* --- Cards & Lists --- */

.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 16px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  background-color: var(--surface-header);
  border-bottom: 1px solid var(--border);
}

.card-header-left {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.card-title {
  font-size: 13px;
  font-weight: 600;
  color: #ffffff;
}

.card-counter {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 400;
}

.card-header-action {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
}

.card-header-action:hover {
  color: #ffffff;
}

.list-group {
  list-style: none;
  padding: 0;
  margin: 0;
}

.list-group-item {
  display: block;
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-primary);
}

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

.empty-state {
  color: var(--text-muted);
  text-align: center;
  padding: 24px 18px;
  font-size: 13px;
}

.host-badge {
  color: var(--accent-link);
  font-size: 11px;
  font-weight: 600;
  margin-right: 6px;
}

/* --- Spinners & Progress --- */

.spinner-border {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  vertical-align: -0.125em;
  border: 0.15em solid currentColor;
  border-right-color: transparent !important;
  border-radius: 50%;
  animation: 0.75s linear infinite spinner-border !important;
}

.spinner-border-sm {
  width: 0.85rem;
  height: 0.85rem;
  border-width: 0.12em;
}

@keyframes spinner-border {
  to {
    transform: rotate(360deg);
  }
}

.progress {
  display: flex;
  height: 6px;
  overflow: hidden;
  background-color: #141414;
  border-radius: 3px;
  margin-top: 10px;
}

.progress-bar {
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  color: #fff;
  text-align: center;
  white-space: nowrap;
  background-color: var(--accent);
}

.progress-bar.bg-success {
  background-color: var(--success) !important;
}

.progress-bar.bg-danger {
  background-color: var(--danger) !important;
}

.progress-status-text {
  font-size: 13px;
  margin-bottom: 6px;
}

.progress-percent {
  font-weight: 600;
  color: var(--accent-link);
}

.error-text {
  color: var(--danger);
  font-size: 12px;
  margin-top: 8px;
}

/* --- Modals --- */

.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1050;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-dialog {
  width: 100%;
  max-width: 480px;
  margin: auto;
}

.modal-dialog.modal-lg {
  max-width: 600px;
}

.modal-content {
  background-color: #0d0d0d;
  border: 1px solid #242424;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  margin: 0;
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  background-color: #080808;
}

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.modal-empty-state {
  text-align: center;
  padding: 24px 0;
  color: var(--text-muted);
  font-size: 13px;
}

.table-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 16px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.table th {
  padding: 10px 14px;
  background-color: #0f0f0f;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  font-weight: 600;
  text-align: left;
}

.table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}

.modal-actions-right {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* --- Toast Notification --- */

.toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  z-index: 9999;
  pointer-events: none;
  opacity: 0;
}

.toast-body {
  display: flex;
  align-items: center;
  padding: 10px 20px;
  background-color: #111111;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  color: #ffffff;
  pointer-events: auto;
}

/* --- App Footer --- */

.app-footer {
  text-align: center;
  padding-top: 36px;
  font-size: 12px;
  color: var(--text-muted);
}

/* --- Helper classes for dynamic user.js elements --- */

.row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.align-items-center {
  align-items: center;
}

.col {
  flex: 1;
  min-width: 0;
}

.col-auto {
  flex: 0 0 auto;
}

.d-flex {
  display: flex;
}

.flex-column {
  flex-direction: column;
}

.text-end {
  text-align: right;
}

.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 14px;
}

.alert-danger {
  background-color: var(--danger-bg);
  border: 1px solid var(--danger);
  color: var(--danger);
}

.alert-dismissible {
  display: flex;
  align-items: center;
  justify-content: space-between;
}