/* ============================================================
   Buttons · icon buttons · user menu
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.1s var(--ease), opacity 0.2s var(--ease);
  font-family: inherit;
  line-height: 1;
  white-space: nowrap;
}
.btn:hover:not(:disabled) { background: var(--surface-hov); border-color: var(--border-strong); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn:focus-visible { outline: 2px solid var(--accent-blue); outline-offset: 2px; }

.btn--primary {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
  font-weight: 600;
}
.btn--primary:hover:not(:disabled) { background: #fff; border-color: #fff; }

.btn--danger {
  color: var(--danger);
  border-color: rgba(224,104,104,0.32);
  background: rgba(224,104,104,0.06);
}
.btn--danger:hover:not(:disabled) {
  background: rgba(224,104,104,0.12);
  border-color: rgba(224,104,104,0.5);
}

.btn--block { width: 100%; padding: 12px 14px; font-size: 14px; }

/* ---------- Icon-only buttons ---------- */
.iconbtn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--ink-dim);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--r-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s var(--ease), background 0.15s var(--ease), border-color 0.15s var(--ease);
}
.iconbtn:hover { color: var(--ink); background: var(--surface-hov); }
.iconbtn:focus-visible { outline: 2px solid var(--accent-blue); outline-offset: 2px; }

.iconbtn--md {
  padding: 9px;
  border-color: var(--border);
  background: var(--surface);
  border-radius: var(--r-md);
}
.iconbtn--md:hover { border-color: var(--border-strong); }

/* ---------- User menu ---------- */
.user { position: relative; }

.user-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 2px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.user-btn:hover { border-color: var(--border-strong); background: var(--surface); }

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'Instrument Serif', serif;
  font-size: 17px;
  background: linear-gradient(135deg, #5a78b8 0%, #3a5292 100%);
  color: #fff;
  letter-spacing: 0;
}

.user-pop {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 220px;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 6px;
  box-shadow: var(--shadow-lg);
  z-index: 50;
  animation: popIn 0.14s var(--ease);
}
.user-pop[hidden] { display: none; }

.user-pop-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 10px 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}
.user-pop-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Instrument Serif', serif;
  font-size: 17px;
  background: linear-gradient(135deg, #5a78b8, #3a5292);
  color: #fff;
}
.user-pop-name { font-size: 13px; font-weight: 500; color: var(--ink); }
.user-pop-meta {
  font-size: 11px; color: var(--ink-mute);
  font-family: 'Geist Mono', ui-monospace, monospace;
}

.user-pop-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border: none;
  background: transparent;
  color: var(--ink);
  font-size: 13px;
  text-align: left;
  border-radius: 7px;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.12s var(--ease), color 0.12s var(--ease);
}
.user-pop-item:hover { background: var(--surface-hov); }
.user-pop-item svg { color: var(--ink-dim); flex-shrink: 0; }

.user-pop-item--danger { color: var(--danger); }
.user-pop-item--danger svg { color: var(--danger); opacity: 0.8; }
.user-pop-item--danger:hover { background: rgba(224,104,104,0.1); }

.user-pop-sep {
  height: 1px;
  background: var(--border);
  margin: 4px 0;
}

@keyframes popIn {
  from { opacity: 0; transform: translateY(-4px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}