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

:root {
  --bg: #0f1119;
  --bg-card: #161a25;
  --bg-card-hover: #1c2130;
  --bg-input: #1a1e2b;
  --border: #252a38;
  --border-focus: #4f6ef7;
  --text: #e2e4eb;
  --text-dim: #7b8191;
  --text-muted: #545a6b;
  --accent: #4f6ef7;
  --accent-soft: rgba(79, 110, 247, 0.12);
  --accent-glow: rgba(79, 110, 247, 0.25);
  --danger: #f74f5a;
  --danger-soft: rgba(247, 79, 90, 0.12);
  --success: #3dd68c;
  --success-soft: rgba(61, 214, 140, 0.12);
  --radius: 14px;
  --radius-sm: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
  --transition: 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Telegram theme overrides ─── */
body.tg-dark, body {
  --bg: var(--tg-theme-bg-color, #0f1119);
  --text: var(--tg-theme-text-color, #e2e4eb);
  --text-dim: var(--tg-theme-hint-color, #7b8191);
  --accent: var(--tg-theme-button-color, #4f6ef7);
  --accent-soft: color-mix(in srgb, var(--accent) 12%, transparent);
  --bg-card: var(--tg-theme-secondary-bg-color, #161a25);
  --border: color-mix(in srgb, var(--text) 10%, transparent);
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ─── Layout ─── */
.app {
  max-width: 480px;
  margin: 0 auto;
  padding: 18px 16px 40px;
}

/* ─── Header ─── */
.header {
  margin-bottom: 20px;
}

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

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

.logo svg {
  color: var(--accent);
}

.logo h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.header-sub {
  color: var(--text-dim);
  font-size: 0.875rem;
  margin-top: 4px;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: none;
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 9px 16px;
  transition: background var(--transition), transform var(--transition), opacity var(--transition);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.97);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 50%;
}

.btn-ghost {
  background: transparent;
  color: var(--text-dim);
}

.btn-ghost:hover {
  background: var(--accent-soft);
  color: var(--text);
}

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

.btn-accent:hover {
  filter: brightness(1.12);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-danger {
  background: var(--danger-soft);
  color: var(--danger);
}

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

.btn-full {
  width: 100%;
  padding: 12px 16px;
}

.btn-small {
  padding: 4px 8px;
  font-size: 0.8rem;
}

.btn:disabled {
  opacity: 0.45;
  pointer-events: none;
}

.btn-spinner svg {
  animation: spin 0.9s linear infinite;
}

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

/* ─── Status bar ─── */
.status-bar {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 16px;
  display: none;
}

.status-bar.error {
  display: block;
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid rgba(247, 79, 90, 0.2);
}

.status-bar.info {
  display: block;
  background: var(--success-soft);
  color: var(--success);
  border: 1px solid rgba(61, 214, 140, 0.2);
}

/* ─── Profile cards ─── */
.profile-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.empty-state {
  text-align: center;
  padding: 48px 16px;
  color: var(--text-dim);
}

.empty-state p {
  margin-top: 14px;
  font-size: 1rem;
  font-weight: 600;
}

.empty-state span {
  display: block;
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
}

.card.expanded {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
}

.card-icon {
  color: var(--accent);
  flex-shrink: 0;
}

.card-title-block {
  flex: 1;
  min-width: 0;
}

.card-name {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-endpoint {
  display: block;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-menu-btn {
  flex-shrink: 0;
}

/* ─── Card body / details ─── */
.card-body {
  padding: 0 16px 16px;
  border-top: 1px solid var(--border);
  animation: slideDown 200ms ease-out;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.detail-row {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.detail-row:last-of-type {
  border-bottom: none;
}

.detail-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.detail-value {
  font-size: 0.875rem;
  word-break: break-all;
  color: var(--text-dim);
}

code.detail-value.pubkey {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--bg-input);
  padding: 2px 6px;
  border-radius: 5px;
  display: inline-block;
  max-width: 100%;
}

.copy-row {
  display: flex;
  align-items: flex-start;
  gap: 6px;
}

.copy-row code {
  flex: 1;
}

.copy-btn {
  flex-shrink: 0;
  margin-top: 1px;
}

.update-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.update-row input {
  flex: 1;
}

/* ─── Card actions ─── */
.card-actions {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

.card-actions .btn {
  flex: 1;
}

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

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 6px;
}

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

input[type="text"] {
  width: 100%;
  padding: 11px 14px;
  font-family: var(--font);
  font-size: 0.925rem;
  color: var(--text);
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--transition);
}

input[type="text"]:focus {
  border-color: var(--border-focus);
}

input[type="text"]::placeholder {
  color: var(--text-muted);
}

/* ─── Modal ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 150ms ease-out;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
  width: 100%;
  max-width: 480px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 20px 20px 28px;
  animation: slideUp 250ms ease-out;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-header h2 {
  font-size: 1.15rem;
  font-weight: 700;
}

/* ─── Toast ─── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 20px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
  z-index: 200;
  animation: toastIn 250ms ease-out;
  white-space: nowrap;
}

.toast.success {
  border-color: var(--success);
  color: var(--success);
}

.toast.error {
  border-color: var(--danger);
  color: var(--danger);
}

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

@keyframes slideUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}