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

/* Spinner Circular */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

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

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 16px;
    height: 16px;
    border-width: 2px;
}

.spinner-lg {
    width: 32px;
    height: 32px;
    border-width: 4px;
}

.spinner-white {
    border-color: rgba(255, 255, 255, 0.2);
    border-top-color: white;
}

/* Loading Skeleton */
.skeleton {
    background: linear-gradient(90deg, var(--secondary) 0%, var(--secondary-dark) 50%, var(--secondary) 100%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-md);
}

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

/* Button Loading States */
.btn {
    position: relative;
    transition: all 0.2s ease;
}

.btn:disabled {
    opacity: 0.65;
    cursor: not-allowed;
    pointer-events: none;
}

.btn.loading {
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    height: 18px;
    margin: -9px 0 0 -9px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Specific Button Loading */
.btn-login.loading {
    color: transparent;
}

.btn-login.loading::after {
    border-color: rgba(255, 255, 255, 0.3);
    border-top-color: white;
}

.btn-primary.loading::after {
    border-color: rgba(0, 113, 227, 0.2);
    border-top-color: var(--primary);
}

.btn-secondary.loading::after {
    border-color: rgba(0, 0, 0, 0.1);
    border-top-color: var(--text-primary);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

.loading-spinner-container {
    text-align: center;
}

.loading-spinner-container .spinner {
    width: 48px;
    height: 48px;
    border-width: 4px;
    border-color: rgba(255, 255, 255, 0.2);
    border-top-color: white;
    margin-bottom: 16px;
}

.loading-spinner-container p {
    color: white;
    font-size: 14px;
    font-weight: 500;
    margin: 0;
}

/* Loading Placeholder for Lists */
.loading-list-item {
    padding: 16px;
    margin-bottom: 12px;
    border-radius: var(--radius-md);
    background: var(--secondary);
}

.loading-list-item .skeleton {
    height: 20px;
    margin-bottom: 8px;
}

.loading-list-item .skeleton:last-child {
    margin-bottom: 0;
}

/* Loading Badge */
.loading-badge {
    display: inline-block;
    background: var(--secondary);
    border-radius: 20px;
    padding: 6px 12px;
    font-size: 12px;
    color: var(--text-light);
    animation: pulse 1.5s ease-in-out infinite;
}

/* Content Loading State */
.content-loading {
    pointer-events: none;
    opacity: 0.6;
}

/* Fade Loading */
@keyframes fadeLoading {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.fade-loading {
    animation: fadeLoading 1.5s ease-in-out infinite;
}

/* Form Input Loading */
input:disabled,
textarea:disabled,
select:disabled {
    background-color: var(--secondary);
    color: var(--text-secondary);
    cursor: not-allowed;
}

/* Progress Bar */
.progress-bar {
    height: 3px;
    background: var(--primary);
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    z-index: 9999;
    transition: width 0.2s ease;
}

.progress-bar.active {
    animation: progressBar 2s ease;
}

@keyframes progressBar {
    0% { width: 10%; }
    50% { width: 80%; }
    100% { width: 95%; }
}

/* Toast Loading */
.toast-loading {
    display: flex;
    align-items: center;
    gap: 12px;
}

.toast-loading .spinner {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

/* Loading Text */
.loading-text {
    color: var(--text-secondary);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.loading-text .spinner {
    width: 14px;
    height: 14px;
    border-width: 2px;
}

/* Card Loading */
.card.loading {
    opacity: 0.6;
    pointer-events: none;
}

.card-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    z-index: 10;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease;
}

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

/* Button Group Loading */
.btn-group.loading {
    opacity: 0.6;
}

.btn-group.loading button {
    pointer-events: none;
}

/* Responsive Spinner */
@media (max-width: 768px) {
    .spinner {
        width: 18px;
        height: 18px;
        border-width: 2px;
    }

    .loading-overlay {
        background: rgba(0, 0, 0, 0.5);
    }

    .loading-spinner-container .spinner {
        width: 40px;
        height: 40px;
        border-width: 3px;
    }
}

/* Dark Mode Loading Styles */
[data-theme="dark"] .skeleton {
    background: linear-gradient(90deg, var(--secondary) 0%, var(--secondary-dark) 50%, var(--secondary) 100%);
}

[data-theme="dark"] .loading-badge {
    background: var(--secondary);
    color: var(--text-light);
}

[data-theme="dark"] .loading-overlay {
    background: rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] input:disabled,
[data-theme="dark"] textarea:disabled,
[data-theme="dark"] select:disabled {
    background-color: var(--secondary);
    color: var(--text-secondary);
}

/* Toast Customization */
.swal-toast-custom {
    padding: 12px 16px !important;
    border-radius: 12px !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
}

.swal-toast-custom .swal2-title {
    font-size: 14px !important;
    font-weight: 500 !important;
    margin: 0 !important;
}

.swal-toast-custom .swal2-icon {
    width: 28px !important;
    height: 28px !important;
    margin-right: 12px !important;
}

.swal-toast-custom .swal2-timer-progress-bar {
    background: var(--primary) !important;
    height: 3px !important;
}