/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 22px; border: 1px solid transparent; border-radius: var(--radius-pill);
  font-weight: 600; font-size: 1rem; line-height: 1; cursor: pointer; text-decoration: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn:hover { text-decoration: none; }
.btn:active { transform: scale(.98); }
.btn[disabled] { opacity: .55; cursor: not-allowed; transform: none; }
.btn-block { width: 100%; }

.btn-primary { background: var(--violet-600); color: #fff; }
.btn-primary:hover:not([disabled]) { background: var(--violet-700); }
.btn-secondary { background: transparent; border-color: var(--line-strong); color: var(--text); }
.btn-secondary:hover:not([disabled]) { background: var(--card-2); }
.btn-danger { background: transparent; border-color: rgba(251, 113, 133, .5); color: var(--danger); }
.btn-danger:hover:not([disabled]) { background: rgba(251, 113, 133, .1); }
.btn-ghost { background: none; border: 0; color: var(--cyan); min-height: 44px; padding: 0 12px; font-weight: 600; cursor: pointer; border-radius: var(--radius-sm); }
.btn[aria-busy="true"]::after {
  content: ""; width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .35); border-top-color: #fff; animation: spin .7s linear infinite;
}

/* ---------- Forms ---------- */
.field { display: grid; gap: 6px; }
.field label { font-size: .875rem; font-weight: 600; color: var(--muted); }
.input {
  width: 100%; min-height: 48px; padding: 12px 14px;
  background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  color: var(--text); transition: border-color var(--dur) var(--ease);
}
textarea.input { min-height: 88px; resize: vertical; }
.input::placeholder { color: var(--faint); }
.input:focus { outline: none; border-color: var(--violet); box-shadow: 0 0 0 3px rgba(139, 92, 246, .25); }
.input[aria-invalid="true"] { border-color: var(--danger); }
.input-wrap { position: relative; }
.input-wrap .input { padding-right: 76px; }
.pw-toggle { position: absolute; right: 4px; top: 2px; min-height: 44px; }
.field-hint { min-height: 1.25em; font-size: .8125rem; color: var(--faint); }
.field-hint[data-kind="error"] { color: var(--danger); }
.field-hint[data-kind="ok"] { color: var(--success); }
.form-error {
  padding: 10px 12px; border-radius: var(--radius-sm); font-size: .9375rem;
  background: rgba(251, 113, 133, .1); border: 1px solid rgba(251, 113, 133, .35); color: #ffc2cb;
}
.form-note {
  padding: 10px 12px; border-radius: var(--radius-sm); font-size: .9375rem;
  background: rgba(34, 211, 238, .08); border: 1px solid rgba(34, 211, 238, .28); color: #bff4fd;
}
form { display: grid; gap: 14px; }

/* ---------- Cards, badges, empty states ---------- */
.card { background: linear-gradient(180deg, var(--card), var(--surface)); border: 1px solid var(--line); border-radius: var(--radius); }
.card-pad { padding: 16px; }
.card h3 { margin-bottom: 4px; }
.card .muted { font-size: .9375rem; }
.card-icon {
  width: 40px; height: 40px; display: grid; place-items: center; margin-bottom: 12px;
  border-radius: 12px; background: var(--card-2); color: var(--cyan);
}

.badge {
  display: inline-flex; align-items: center; padding: 3px 10px; border-radius: var(--radius-pill);
  font-size: .75rem; font-weight: 600; letter-spacing: .02em;
  background: rgba(139, 92, 246, .18); color: #cbb7ff; border: 1px solid rgba(139, 92, 246, .35);
}

.empty { display: grid; justify-items: center; gap: 10px; padding: 48px 20px; text-align: center; }
.empty .card-icon { width: 56px; height: 56px; border-radius: 18px; margin: 0; }
.empty p { color: var(--muted); max-width: 26rem; }

/* ---------- Avatars ---------- */
.avatar {
  flex: none; display: grid; place-items: center; overflow: hidden; border-radius: 50%;
  background: var(--grad); color: #05050a; font-weight: 700; user-select: none;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar-sm { width: 36px; height: 36px; font-size: .875rem; }
.avatar-md { width: 48px; height: 48px; font-size: 1.0625rem; }
.avatar-xl { width: 88px; height: 88px; font-size: 1.75rem; }

/* ---------- Toasts ---------- */
.toasts {
  position: fixed; left: 0; right: 0; z-index: 200; display: grid; justify-items: center; gap: 8px; padding: 0 12px;
  bottom: calc(var(--nav-h) + var(--safe-b) + 12px); pointer-events: none;
}
@media (min-width: 900px) { .toasts { bottom: 20px; } }
.toast {
  pointer-events: auto; display: flex; align-items: center; gap: 12px; max-width: 460px; width: fit-content;
  padding: 12px 16px; border-radius: var(--radius-sm); background: var(--card-2);
  border: 1px solid var(--line-strong); box-shadow: 0 8px 24px rgba(0, 0, 0, .5);
  animation: toast-in var(--dur) var(--ease);
}
.toast.out { opacity: 0; transform: translateY(6px); transition: opacity 160ms, transform 160ms; }
.toast-error { border-color: rgba(251, 113, 133, .55); }
.toast-success { border-color: rgba(52, 211, 153, .5); }
.toast-action { background: none; border: 0; color: var(--cyan); font-weight: 700; cursor: pointer; min-height: 36px; padding: 0 6px; }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } }

/* ---------- Dialog ---------- */
dialog.dialog {
  width: calc(100% - 32px); max-width: 400px; padding: 0; color: var(--text);
  background: var(--card); border: 1px solid var(--line-strong); border-radius: 20px;
}
dialog.dialog::backdrop { background: rgba(0, 0, 0, .7); }
.dialog-body { padding: 20px; gap: 12px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 8px; }

/* ---------- Skeleton ---------- */
.skeleton {
  border-radius: var(--radius-sm); min-height: 16px;
  background: linear-gradient(90deg, var(--card) 0%, var(--card-2) 50%, var(--card) 100%);
  background-size: 200% 100%; animation: shimmer 1.4s linear infinite;
}
@keyframes shimmer { to { background-position: -200% 0; } }