/* Universal Loading States CSS */
/* This file provides reusable loading components for the entire website */

/* Base Loading Container */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 0;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.loading-state.fade-out {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    height: 0;
    padding: 0;
    overflow: hidden;
}

/* Loading Spinner */
.loading-spinner {
    position: relative;
    width: 60px;
    height: 60px;
    margin-bottom: 1rem;
}

/* Large Spinner for full-page loading */
.loading-spinner.large {
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
}

/* Small Spinner for inline loading */
.loading-spinner.small {
    width: 40px;
    height: 40px;
    margin-bottom: 0.5rem;
}

/* Spinner Rings */
.spinner-ring {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 2px solid transparent;
    border-top: 2px solid #fd5631;
    border-radius: 50%;
    animation: spin 1.5s linear infinite;
}

.spinner-ring:nth-child(2) {
    width: 75%;
    height: 75%;
    top: 12.5%;
    left: 12.5%;
    border-top-color: #ffc107;
    animation-duration: 1.2s;
    animation-direction: reverse;
}

.spinner-ring:nth-child(3) {
    width: 50%;
    height: 50%;
    top: 25%;
    left: 25%;
    border-top-color: #28a745;
    animation-duration: 0.9s;
}

/* Large Spinner Rings */
.loading-spinner.large .spinner-ring {
    border-width: 3px;
}

.loading-spinner.large .spinner-ring:nth-child(2) {
    border-width: 3px;
}

.loading-spinner.large .spinner-ring:nth-child(3) {
    border-width: 3px;
}

/* Small Spinner Rings */
.loading-spinner.small .spinner-ring {
    border-width: 1.5px;
}

.loading-spinner.small .spinner-ring:nth-child(2) {
    border-width: 1.5px;
}

.loading-spinner.small .spinner-ring:nth-child(3) {
    border-width: 1.5px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Loading Labels */
.loading-label {
    color: #6c757d;
    font-size: 0.9rem;
    font-weight: 500;
    margin: 0;
    letter-spacing: 0.5px;
}

.loading-label.large {
    font-size: 1.1rem;
    font-weight: 600;
}

.loading-label.small {
    font-size: 0.8rem;
    font-weight: 400;
}

/* Content Container */
.content-container {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.content-container.fade-in {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
}

.content-container.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

/* Smooth loading transition states */
.content-container.loading-hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.content-container.loading-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Full Page Loading Overlay */
.page-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    visibility: visible;
    transition: all 0.5s ease;
}

.page-loading-overlay.fade-out {
    opacity: 0;
    visibility: hidden;
}

.page-loading-overlay .loading-spinner {
    width: 80px;
    height: 80px;
    margin-bottom: 2rem;
}

.page-loading-overlay .loading-label {
    font-size: 1.1rem;
    font-weight: 600;
    color: #495057;
}

/* Section Loading (for specific sections) */
.section-loading {
    position: relative;
    min-height: 200px;
}

.section-loading .loading-state {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    z-index: 100;
}

/* Button Loading States */
.btn-loading {
    position: relative;
    pointer-events: none;
}

.btn-loading .loading-spinner {
    width: 16px;
    height: 16px;
    margin: 0 8px 0 0;
    display: inline-block;
}

.btn-loading .loading-spinner .spinner-ring {
    border-width: 1px;
}

/* Card Loading States */
.card-loading {
    position: relative;
    overflow: hidden;
}

.card-loading::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    animation: shimmer 1.5s infinite;
    z-index: 1;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Table Loading States */
.table-loading {
    position: relative;
}

.table-loading tbody tr {
    opacity: 0.5;
    pointer-events: none;
}

.table-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

/* Modal Loading States */
.modal-loading .modal-body {
    position: relative;
    min-height: 200px;
}

.modal-loading .loading-state {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    z-index: 1000;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .loading-spinner {
        width: 50px;
        height: 50px;
    }

    .loading-spinner.large {
        width: 70px;
        height: 70px;
    }

    .loading-label {
        font-size: 0.8rem;
    }

    .loading-state {
        padding: 2rem 0;
    }
}

/* Dark Theme Support */
@media (prefers-color-scheme: dark) {
    .loading-label {
        color: #adb5bd;
    }

    .page-loading-overlay {
        background: rgba(33, 37, 41, 0.95);
    }

    .page-loading-overlay .loading-label {
        color: #adb5bd;
    }

    .section-loading .loading-state {
        background: rgba(33, 37, 41, 0.9);
    }
}