/* Knoppen — vlak, rustig, MySyncFlow-stijl. Max één primary per scherm. */

.btn,
form [type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 88%, white) 0%, var(--accent) 100%);
  color: var(--text-inverse);
  border: 0;
  border-radius: var(--radius-md);
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  line-height: 1.35;
  text-decoration: none;
  box-shadow:
    0 1px 2px rgba(16, 24, 40, 0.10),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
  transition:
    background var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out),
    transform  var(--dur-fast) var(--ease-out);
}

.btn:hover,
form [type="submit"]:hover {
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-strong) 100%);
  text-decoration: none;
  color: var(--text-inverse);
  transform: translateY(-1px);
  box-shadow:
    0 4px 12px var(--accent-glow),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

.btn:active,
form [type="submit"]:active {
  transform: translateY(0);
  box-shadow:
    0 1px 2px rgba(16, 24, 40, 0.10),
    inset 0 1px 2px rgba(16, 24, 40, 0.12);
}

.btn:focus-visible,
form [type="submit"]:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn.secondary,
form [type="submit"].secondary {
  background: var(--surface-1);
  color: var(--text-strong);
  border: 1px solid var(--line-medium);
  box-shadow: var(--shadow-xs);
}

.btn.secondary:hover,
form [type="submit"].secondary:hover {
  background: var(--surface-2);
  color: var(--text-strong);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-sm);
}

.btn.danger,
form [type="submit"].danger {
  background: var(--danger);
  color: #fff;
  box-shadow: var(--shadow-xs);
}

.btn.danger:hover,
form [type="submit"].danger:hover {
  background: color-mix(in srgb, var(--danger) 86%, black);
  color: #fff;
}

.btn:disabled,
form [type="submit"]:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  transform: none;
  box-shadow: var(--shadow-xs);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.btn-danger,
form [type="submit"].btn-danger {
  background: linear-gradient(180deg, color-mix(in srgb, var(--danger) 88%, white) 0%, var(--danger) 100%);
  color: var(--text-inverse);
}

.btn-danger:hover,
form [type="submit"].btn-danger:hover {
  background: linear-gradient(180deg, var(--danger) 0%, color-mix(in srgb, var(--danger) 82%, black) 100%);
  box-shadow:
    0 4px 12px color-mix(in srgb, var(--danger) 30%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

.btn-icon,
form [type="submit"].btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--line-medium);
  border-radius: var(--radius-sm);
  padding: 7px 9px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  box-shadow: none;
  transition:
    background     var(--dur-fast) var(--ease-out),
    color          var(--dur-fast) var(--ease-out),
    border-color   var(--dur-fast) var(--ease-out);
}

.btn-icon:hover,
form [type="submit"].btn-icon:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--line-strong);
}

.btn-icon.danger:hover,
form [type="submit"].btn-icon.danger:hover {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: var(--danger);
}

/* Specifieke submit-knoppen die géén primaire stijl mogen krijgen */
form [type="submit"].panel-add-section {
  background: transparent;
  color: var(--accent);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-sm);
  font-size: 13px;
  padding: 7px 12px;
  box-shadow: none;
}

form [type="submit"].panel-add-section:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 0;
  padding: 3px 0;
  color: var(--text-muted);
  font-size: 13px;
  text-decoration: none;
  cursor: pointer;
  transition: color var(--dur-fast) var(--ease-out);
}

.btn-back:hover {
  color: var(--text-strong);
}