.paper-date-picker {
  font-family: var(--font-family);
  position: relative;
  display: inline-block;
  width: 100%;
  max-width: 300px;
}

.paper-date-picker__input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  border: 2px solid var(--ink-black);
  border-radius: 8px;
  background: var(--paper-white);
  transition: all var(--transition-normal);
}

.paper-date-picker__input-wrapper:hover {
  border-color: var(--ink-gray);
  box-shadow: var(--shadow-pencil);
}

.paper-date-picker__input-wrapper:focus-within {
  border-color: var(--ink-black);
  border-style: dashed;
  border-width: 3px;
  box-shadow: var(--shadow-pencil);
}

.paper-date-picker__input {
  flex: 1;
  border: none;
  background: transparent;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--ink-black);
  outline: none;
  cursor: pointer;
}

.paper-date-picker__input:disabled {
  color: var(--pencil-gray);
  cursor: not-allowed;
}

.paper-date-picker__input::placeholder {
  color: var(--ink-light);
}

.paper-date-picker__trigger {
  border: none;
  background: transparent;
  margin-right: var(--spacing-xs);
}

.paper-date-picker__clear {
  border: none;
  background: transparent;
  margin-right: var(--spacing-xs);
}

/* Modal customization */
.paper-date-picker__modal .paper-modal__content {
  padding: 0;
  overflow: visible;
}

.paper-date-picker__calendar {
  padding: var(--spacing-lg);
  background: var(--paper-white);
  border-radius: 8px;
  position: relative;
}

/* Header */
.paper-date-picker__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--ink-black);
}

.paper-date-picker__current-month {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

.paper-date-picker__month {
  font-size: var(--font-size-lg);
  font-weight: bold;
  color: var(--ink-black);
}

.paper-date-picker__year {
  font-size: var(--font-size-sm);
  color: var(--ink-gray);
}

/* Weekdays */
.paper-date-picker__weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.paper-date-picker__week-number-header {
  font-size: var(--font-size-xs);
  color: var(--ink-light);
  text-align: center;
  font-weight: bold;
}

.paper-date-picker__weekday {
  font-size: var(--font-size-sm);
  color: var(--ink-gray);
  text-align: center;
  font-weight: bold;
  padding: var(--spacing-xs);
}

/* Calendar grid */
.paper-date-picker__grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}

.paper-date-picker__day {
  position: relative;
  width: 36px;
  height: 36px;
  border: 2px solid transparent;
  border-radius: 50%;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--ink-black);
  cursor: pointer;
  transition: all var(--transition-normal);
  outline: none;
}

.paper-date-picker__day:hover:not(:disabled) {
  background: var(--paper-gray);
  border-color: var(--ink-black);
  transform: scale(1.1);
}

.paper-date-picker__day--current-month {
  color: var(--ink-black);
}

.paper-date-picker__day--other-month {
  color: var(--ink-light);
}

.paper-date-picker__day--today {
  border-color: var(--ink-black);
  background: var(--paper-gray);
  font-weight: bold;
}

.paper-date-picker__day--selected {
  background: var(--ink-black);
  color: var(--paper-white);
  border-color: var(--ink-black);
  font-weight: bold;
}

.paper-date-picker__day--selected:hover {
  background: var(--ink-gray);
  border-color: var(--ink-gray);
}

.paper-date-picker__day--disabled {
  color: var(--pencil-gray);
  cursor: not-allowed;
  background: transparent;
}

.paper-date-picker__day--disabled:hover {
  background: transparent;
  border-color: transparent;
  transform: none;
}

.paper-date-picker__day--hovered {
  background: var(--ink-light);
  border-color: var(--ink-black);
}

.paper-date-picker__day-number {
  position: relative;
  z-index: 1;
}

.paper-date-picker__week-number {
  position: absolute;
  top: -8px;
  left: -8px;
  font-size: var(--font-size-xs);
  color: var(--ink-light);
  background: var(--paper-white);
  border-radius: 50%;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

/* Footer */
.paper-date-picker__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-md);
  border-top: 2px solid var(--ink-black);
}

.paper-date-picker__actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* Time picker */
.paper-date-picker__time {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 2px solid var(--ink-black);
}

.paper-date-picker__time-label {
  font-size: var(--font-size-sm);
  font-weight: bold;
  color: var(--ink-black);
  margin-bottom: var(--spacing-sm);
}

.paper-date-picker__time-inputs {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.paper-date-picker__time-select {
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  border: 2px solid var(--ink-black);
  border-radius: 4px;
  background: var(--paper-white);
  color: var(--ink-black);
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  outline: none;
  transition: all var(--transition-normal);
}

.paper-date-picker__time-select:hover {
  border-color: var(--ink-gray);
  background: var(--paper-gray);
}

.paper-date-picker__time-select:focus {
  border-color: var(--ink-black);
  border-style: dashed;
  box-shadow: var(--shadow-pencil);
}

.paper-date-picker__time-separator {
  font-size: var(--font-size-base);
  color: var(--ink-black);
  font-weight: bold;
}

/* Hand-drawn border effects */
.paper-date-picker__input-wrapper::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  bottom: -1px;
  border: 1px solid var(--ink-black);
  border-radius: 9px;
  opacity: 0.3;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.paper-date-picker__input-wrapper:hover::before {
  opacity: 0.1;
}

.paper-date-picker__day::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-date-picker__day:hover::before {
  opacity: 0.1;
}

/* Animations */
.paper-date-picker__calendar {
  animation: datePickerSlideIn 0.3s ease-out;
}

@keyframes datePickerSlideIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.paper-date-picker__day {
  animation: dayAppear 0.2s ease-out;
}

@keyframes dayAppear {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Responsive design */
@media (max-width: 768px) {
  .paper-date-picker {
    max-width: 100%;
  }
  
  .paper-date-picker__calendar {
    padding: var(--spacing-md);
  }
  
  .paper-date-picker__day {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-xs);
  }
  
  .paper-date-picker__header {
    margin-bottom: var(--spacing-md);
  }
  
  .paper-date-picker__month {
    font-size: var(--font-size-base);
  }
  
  .paper-date-picker__year {
    font-size: var(--font-size-xs);
  }
  
  .paper-date-picker__footer {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: stretch;
  }
  
  .paper-date-picker__actions {
    justify-content: center;
  }
}

/* Print styles */
@media print {
  .paper-date-picker__input-wrapper {
    border: 1px solid var(--ink-black);
  }
  
  .paper-date-picker__day {
    border: 1px solid var(--ink-black);
  }
}