/**
 * Interactive Components Styles
 * Loading states, form feedback, confirmation modals, and other interactive UI elements
 * @version 1.0.0
 */

/* ============================================
   LOADING STATES
   ============================================ */

/* Button Loading State */
.btn--loading {
    position: relative;
    pointer-events: none;
    color: transparent !important;
}

.btn--loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.8s linear infinite;
}

.btn--secondary.btn--loading::after {
    border-color: rgba(0, 0, 0, 0.2);
    border-top-color: var(--color-gray-600);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--color-gray-100) 25%, var(--color-gray-50) 50%, var(--color-gray-100) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-md);
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
}

.skeleton-text--short {
    width: 60%;
}

.skeleton-text--medium {
    width: 80%;
}

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.skeleton-image {
    width: 100%;
    height: 150px;
}

.skeleton-card {
    padding: var(--spacing-4);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-lg);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Page Loading Overlay */
.page-loading {
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-4);
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.page-loading--active {
    opacity: 1;
    pointer-events: auto;
}

.page-loading__spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--theme-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.page-loading__text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* ============================================
   FORM FEEDBACK STATES
   ============================================ */

.form-field {
    margin-bottom: var(--spacing-4);
}

.form-field__input {
    transition: border-color 0.2s, box-shadow 0.2s;
}

/* Error State */
.form-field--error .form-field__input,
.form-input--error {
    border-color: var(--color-red-500) !important;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-field__error {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-1);
    margin-top: var(--spacing-1);
    font-size: var(--font-size-sm);
    color: var(--color-red-500);
}

.form-field__error svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    margin-top: 2px;
}

/* Success State */
.form-field--success .form-field__input,
.form-input--success {
    border-color: var(--color-green-500) !important;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.form-field__success {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    margin-top: var(--spacing-1);
    font-size: var(--font-size-sm);
    color: var(--color-green-600);
}

.form-field__success svg {
    width: 14px;
    height: 14px;
}

/* Character Counter */
.form-field__counter {
    font-size: var(--font-size-xs);
    color: var(--color-gray-400);
    text-align: right;
    margin-top: var(--spacing-1);
}

.form-field__counter--warning {
    color: var(--color-amber-500);
}

.form-field__counter--error {
    color: var(--color-red-500);
}

/* Form Success State */
.form-success {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-8);
}

.form-success__icon {
    width: 64px;
    height: 64px;
    background: var(--color-green-100);
    color: var(--color-green-500);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-4);
    animation: success-bounce 0.5s ease;
}

.form-success__icon svg {
    width: 32px;
    height: 32px;
}

@keyframes success-bounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.form-success__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-2);
}

.form-success__message {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-6);
    max-width: 400px;
}

.form-success__reference {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    font-family: monospace;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-6);
}

/* ============================================
   CONFIRMATION MODAL
   ============================================ */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    padding: var(--spacing-4);
}

.modal-overlay--active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 400px;
    transform: scale(0.9);
    transition: transform 0.2s;
    overflow: hidden;
}

.modal-overlay--active .modal {
    transform: scale(1);
}

.modal__header {
    padding: var(--spacing-5);
    border-bottom: 1px solid var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-gray-900);
}

.modal__close {
    background: none;
    border: none;
    padding: var(--spacing-1);
    cursor: pointer;
    color: var(--color-gray-400);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.modal__close:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-600);
}

.modal__close svg {
    width: 20px;
    height: 20px;
}

.modal__body {
    padding: var(--spacing-5);
}

.modal__body--centered {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.modal__icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-4);
}

.modal__icon svg {
    width: 24px;
    height: 24px;
}

.modal__icon--danger {
    background: var(--color-red-100);
    color: var(--color-red-500);
}

.modal__icon--warning {
    background: var(--color-amber-100);
    color: var(--color-amber-500);
}

.modal__icon--success {
    background: var(--color-green-100);
    color: var(--color-green-500);
}

.modal__icon--info {
    background: var(--color-blue-100);
    color: var(--color-blue-500);
}

.modal__message {
    color: var(--color-gray-600);
    line-height: 1.6;
}

.modal__footer {
    padding: var(--spacing-4) var(--spacing-5);
    border-top: 1px solid var(--color-gray-100);
    display: flex;
    gap: var(--spacing-3);
    justify-content: flex-end;
}

.modal__footer--centered {
    justify-content: center;
}

/* Modal Button Variants */
.btn--danger {
    background: var(--color-red-500);
    color: white;
}

.btn--danger:hover {
    background: var(--color-red-600);
}

/* ============================================
   INTERACTIVE FEEDBACK
   ============================================ */

/* Save indicator */
.save-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.save-indicator--saving {
    color: var(--color-amber-600);
}

.save-indicator--saved {
    color: var(--color-green-600);
}

.save-indicator__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
}

.save-indicator--saving .save-indicator__dot {
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Unsaved changes banner */
.unsaved-banner {
    position: fixed;
    bottom: var(--spacing-4);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-gray-900);
    color: white;
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    transition: transform 0.3s ease;
}

.unsaved-banner--visible {
    transform: translateX(-50%) translateY(0);
}

.unsaved-banner__text {
    font-size: var(--font-size-sm);
}

.unsaved-banner__actions {
    display: flex;
    gap: var(--spacing-2);
}

.unsaved-banner__btn {
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.unsaved-banner__btn--discard {
    background: transparent;
    color: var(--color-gray-400);
}

.unsaved-banner__btn--discard:hover {
    color: white;
}

.unsaved-banner__btn--save {
    background: var(--theme-primary);
    color: white;
}

.unsaved-banner__btn--save:hover {
    background: var(--color-coral-600);
}

/* ============================================
   EMPTY STATES
   ============================================ */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-12) var(--spacing-6);
    color: var(--color-gray-500);
}

.empty-state__icon {
    width: 64px;
    height: 64px;
    background: var(--color-gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-4);
    color: var(--color-gray-400);
}

.empty-state__icon svg {
    width: 32px;
    height: 32px;
}

.empty-state__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-2);
}

.empty-state__message {
    max-width: 300px;
    margin-bottom: var(--spacing-6);
}

/* ============================================
   PROGRESS INDICATORS
   ============================================ */

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar__fill {
    height: 100%;
    background: var(--theme-primary);
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.progress-bar--success .progress-bar__fill {
    background: var(--color-green-500);
}

.progress-bar--warning .progress-bar__fill {
    background: var(--color-amber-500);
}

.progress-bar--danger .progress-bar__fill {
    background: var(--color-red-500);
}

/* Step Progress */
.step-progress {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.step-progress__step {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.step-progress__dot {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-gray-500);
}

.step-progress__step--completed .step-progress__dot {
    background: var(--color-green-500);
    color: white;
}

.step-progress__step--current .step-progress__dot {
    background: var(--theme-primary);
    color: white;
}

.step-progress__line {
    width: 32px;
    height: 2px;
    background: var(--color-gray-200);
}

.step-progress__step--completed + .step-progress__line {
    background: var(--color-green-500);
}

/* ============================================
   TOOLTIP
   ============================================ */

.tooltip {
    position: relative;
}

.tooltip__content {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: var(--color-gray-900);
    color: white;
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    z-index: 1000;
}

.tooltip__content::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--color-gray-900);
}

.tooltip:hover .tooltip__content {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   DROPDOWN ANIMATIONS
   ============================================ */

.dropdown-menu {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s, visibility 0.2s, transform 0.2s;
}

.dropdown-menu--open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ============================================
   ACTION CONFIRMATION (Inline)
   ============================================ */

.action-confirm {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.action-confirm__text {
    color: var(--color-gray-600);
}

.action-confirm__btn {
    padding: var(--spacing-1) var(--spacing-2);
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.action-confirm__btn--cancel {
    background: var(--color-gray-200);
    color: var(--color-gray-600);
}

.action-confirm__btn--cancel:hover {
    background: var(--color-gray-300);
}

.action-confirm__btn--confirm {
    background: var(--color-red-500);
    color: white;
}

.action-confirm__btn--confirm:hover {
    background: var(--color-red-600);
}

/* ============================================
   ITINERARY ACTIVITY ENHANCEMENTS
   ============================================ */

/* Activity action buttons */
.itinerary-activity__btn--danger {
    color: var(--color-red-500);
}

.itinerary-activity__btn--danger:hover {
    background: var(--color-red-50);
    color: var(--color-red-600);
}

/* Activity note container with edit button */
.itinerary-activity__note-container {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
    margin-top: var(--spacing-2);
}

.itinerary-activity__note-container .itinerary-activity__note {
    flex: 1;
    margin: 0;
}

.itinerary-activity__edit-note {
    flex-shrink: 0;
    padding: var(--spacing-1);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-gray-400);
    cursor: pointer;
    opacity: 0;
    transition: all 0.2s;
}

.itinerary-activity__note-container:hover .itinerary-activity__edit-note {
    opacity: 1;
}

.itinerary-activity__edit-note:hover {
    color: var(--theme-primary);
    background: var(--color-gray-100);
}

/* Empty state for itinerary day */
.itinerary-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-12) var(--spacing-8);
    text-align: center;
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--color-gray-200);
    margin-bottom: var(--spacing-4);
}

/* Activity type grid in modal */
.activity-type-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-3);
}

.activity-type-option input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.activity-type-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.2s;
}

.activity-type-card svg {
    width: 24px;
    height: 24px;
    color: var(--color-gray-500);
    transition: color 0.2s;
}

.activity-type-card span {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-600);
}

.activity-type-option input:checked + .activity-type-card {
    border-color: var(--theme-primary);
    background: var(--color-coral-50, #fff5f5);
}

.activity-type-option input:checked + .activity-type-card svg {
    color: var(--theme-primary);
}

.activity-type-option input:checked + .activity-type-card span {
    color: var(--theme-primary);
}

.activity-type-card:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-sm);
}

@media (max-width: 640px) {
    .activity-type-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}