.paper-icon-button {
  font-family: var(--font-family);
  background: transparent;
  border: 2px solid var(--ink-black);
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--ink-black);
  font-weight: normal;
  outline: none;
  user-select: none;
  padding: 0;
}

/* Icon button sizes */
.paper-icon-button--small {
  width: 32px;
  height: 32px;
  font-size: var(--font-size-sm);
}

.paper-icon-button--medium {
  width: 40px;
  height: 40px;
  font-size: var(--font-size-base);
}

.paper-icon-button--large {
  width: 48px;
  height: 48px;
  font-size: var(--font-size-lg);
}

/* Icon button variants */
.paper-icon-button--outline {
  background: transparent;
  color: var(--ink-black);
}

.paper-icon-button--primary {
  background: var(--ink-black);
  color: var(--paper-white);
  border-color: var(--ink-black);
}

.paper-icon-button--secondary {
  background: var(--paper-gray);
  color: var(--ink-black);
  border-color: var(--ink-gray);
}

/* Hover states */
.paper-icon-button--outline:hover:not(.paper-icon-button--disabled) {
  background: var(--ink-black);
  color: var(--paper-white);
  transform: scale(1.05);
  box-shadow: var(--shadow-pencil);
}

.paper-icon-button--primary:hover:not(.paper-icon-button--disabled) {
  background: var(--ink-gray);
  border-color: var(--ink-gray);
  transform: scale(1.05);
  box-shadow: var(--shadow-pencil);
}

.paper-icon-button--secondary:hover:not(.paper-icon-button--disabled) {
  background: var(--ink-gray);
  color: var(--paper-white);
  transform: scale(1.05);
  box-shadow: var(--shadow-pencil);
}

/* Active states */
.paper-icon-button:active:not(.paper-icon-button--disabled) {
  transform: scale(0.95);
  box-shadow: var(--shadow-pencil);
}

/* Disabled state */
.paper-icon-button--disabled {
  border-color: var(--pencil-gray);
  color: var(--pencil-gray);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  background: transparent;
}

.paper-icon-button--disabled:hover {
  transform: none;
  box-shadow: none;
  background: transparent;
  color: var(--pencil-gray);
}

/* Icon styles */
.paper-icon-button__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1em;
  width: 100%;
  height: 100%;
}

/* Hand-drawn border effect */
.paper-icon-button::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  bottom: -1px;
  border: 1px solid var(--ink-black);
  border-radius: 50%;
  opacity: 0.3;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.paper-icon-button:hover::before {
  opacity: 0.1;
}

/* Focus state */
.paper-icon-button:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.2);
}

/* Irregular shape variation */
.paper-icon-button--irregular {
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
}

.paper-icon-button--irregular::before {
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
}