/* === Buttons, Inputs, Avatars, Badges, Modals === */

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}
.btn-secondary:hover { background: var(--hover-strong); }
.btn-danger {
  background: var(--danger);
  color: #FFFFFF;
}
.btn-danger:hover { background: var(--danger-hover); }
.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.btn-icon:hover { background: var(--hover); color: var(--text-primary); }
.btn-icon.active { background: var(--accent); color: var(--accent-text); }

/* === Inputs === */
.input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  outline: none;
  transition: border-color var(--transition);
}
.input:focus { border-color: var(--accent); }
.input::placeholder { color: var(--text-tertiary); }

.textarea {
  resize: none;
  min-height: 60px;
  max-height: 200px;
}

/* === Avatar === */
.avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  object-fit: cover;
  background: var(--bg-tertiary);
  flex-shrink: 0;
}
.avatar-sm { width: 28px; height: 28px; }
.avatar-lg { width: 64px; height: 64px; }
.avatar-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--text-tertiary);
  color: var(--bg-primary);
  font-weight: 600;
  font-size: 1rem;
  user-select: none;
}

/* === Badge === */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-text);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

/* === Modal === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.modal-box {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 480px;
  max-height: 80vh;
  overflow-y: auto;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: var(--font-size-lg); font-weight: 600; }
.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-close:hover { background: var(--hover); color: var(--text-primary); }
#modal-body { padding: 20px; }

/* === Toast === */
#toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  padding: 12px 24px;
  border-radius: var(--radius);
  background: var(--accent);
  color: var(--accent-text);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-lg);
  animation: toast-in 300ms ease, toast-out 300ms ease 2.5s forwards;
  pointer-events: auto;
}
.toast.error { background: var(--danger); }
@keyframes toast-in { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toast-out { from { opacity: 1; } to { opacity: 0; } }

/* === Loading Spinner === */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 600ms linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === Divider === */
.divider {
  height: 1px;
  background: var(--border);
  margin: 12px 0;
}

/* === Form Group === */
.form-group {
  margin-bottom: 16px;
}
.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}