/**
 * Invitation Page Loader Styles
 * Version: 1.0.0
 * Description: Clean and secure page loader styles
 */

/* Base Loader Styles */
.invitation-page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999999;
    display: flex;
    justify-content: center;
    align-items: center;
}

.invitation-page-loader .loader-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.3s ease;
}

.invitation-page-loader .loader {
    display: inline-block;
    width: 40px;
    height: 40px;
    position: relative;
    border: 4px solid;
    animation: invitation-loader-rotate 2s infinite ease;
    z-index: 1000000;
}

.invitation-page-loader .loader-inner {
    vertical-align: top;
    display: inline-block;
    width: 100%;
    animation: invitation-loader-scale 2s infinite ease-in;
}

/* Animation Keyframes */
@keyframes invitation-loader-rotate {
    0% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(180deg);
    }
    50% {
        transform: rotate(180deg);
    }
    75% {
        transform: rotate(360deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes invitation-loader-scale {
    0% {
        height: 0%;
    }
    25% {
        height: 0%;
    }
    50% {
        height: 100%;
    }
    75% {
        height: 100%;
    }
    100% {
        height: 0%;
    }
}

/* Hide Animation */
.invitation-page-loader.hide-loader {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

/* ============================================
   Style 2: Circular Spinner
   ============================================ */
.invitation-page-loader.style-2 .loader {
    border-radius: 50%;
    border-top-color: transparent;
    animation: invitation-loader-spin 1s linear infinite;
}

.invitation-page-loader.style-2 .loader-inner {
    display: none;
}

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

/* ============================================
   Style 3: Pulse Bar
   ============================================ */
.invitation-page-loader.style-3 .loader {
    border: none;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.invitation-page-loader.style-3 .loader-inner {
    height: 100%;
    width: 30px;
    background-color: currentColor;
    animation: invitation-loader-pulse 1s infinite ease-in-out;
}

@keyframes invitation-loader-pulse {
    0%, 100% {
        transform: scaleY(0.2);
        opacity: 0.3;
    }
    50% {
        transform: scaleY(1);
        opacity: 1;
    }
}

/* ============================================
   Style 4: Bouncing Dots
   ============================================ */
.invitation-page-loader.style-4 .loader {
    border: none;
    width: 70px;
    display: flex;
    justify-content: space-between;
}

.invitation-page-loader.style-4 .loader-inner {
    display: none;
}

.invitation-page-loader.style-4 .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: currentColor;
    animation: invitation-loader-bounce 1.4s infinite ease-in-out both;
}

.invitation-page-loader.style-4 .dot:nth-child(1) {
    animation-delay: -0.32s;
}

.invitation-page-loader.style-4 .dot:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes invitation-loader-bounce {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.3;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ============================================
   Style 5: Ripple Effect
   ============================================ */
.invitation-page-loader.style-5 .loader {
    border: none;
    width: 50px;
    height: 50px;
}

.invitation-page-loader.style-5 .loader-inner {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: transparent;
    animation: invitation-loader-ripple 1s ease-out infinite;
}

@keyframes invitation-loader-ripple {
    0% {
        transform: scale(0);
        opacity: 1;
        box-shadow: 0 0 0 0 currentColor;
    }
    100% {
        transform: scale(1);
        opacity: 0;
        box-shadow: 0 0 0 20px currentColor;
    }
}

/* Responsive Styles */
@media (max-width: 768px) {
    .invitation-page-loader .loader {
        width: 30px;
        height: 30px;
        border-width: 3px;
    }
    
    .invitation-page-loader.style-3 .loader {
        width: 40px;
        height: 40px;
    }
    
    .invitation-page-loader.style-4 .loader {
        width: 50px;
    }
    
    .invitation-page-loader.style-4 .dot {
        width: 8px;
        height: 8px;
    }
}

/* Print Styles - Hide loader when printing */
@media print {
    .invitation-page-loader {
        display: none !important;
    }
}

/* Accessibility - Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    .invitation-page-loader .loader,
    .invitation-page-loader .loader-inner,
    .invitation-page-loader.style-2 .loader,
    .invitation-page-loader.style-3 .loader-inner,
    .invitation-page-loader.style-4 .dot,
    .invitation-page-loader.style-5 .loader-inner {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}