/**
 * Shelton Beach Resort Loading System
 * Ocean-inspired loading animations with beach resort theme
 */

:root {
    /* Shelton Beach Resort Brand Colors */
    --sbh-aqua: #7ab4a1;
    --sbh-orange: #e08f5f;
    --sbh-pink: #e19985;
    --sbh-black: #1a1a1a;
    --sbh-white: #ffffff;
    --sbh-light-gray: #f8f9fa;
    --sbh-medium-gray: #6c757d;
    --sbh-dark-gray: #495057;
    
    /* Loading specific colors */
    --loading-primary: var(--sbh-aqua);
    --loading-secondary: var(--sbh-orange);
    --loading-accent: var(--sbh-pink);
    --loading-bg: rgba(26, 26, 26, 0.85);
    --loading-text: var(--sbh-white);
    --loading-glass: rgba(122, 180, 161, 0.1);
    
    /* Typography */
    --sbh-font-primary: "Playfair Display", serif;
    --sbh-font-body: "Roboto", sans-serif;
}

/* Global Loading Overlay - Ocean Theme */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(26, 26, 26, 0.9) 0%, 
        rgba(122, 180, 161, 0.1) 25%,
        rgba(224, 143, 95, 0.1) 50%,
        rgba(225, 153, 133, 0.1) 75%,
        rgba(26, 26, 26, 0.9) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Ocean Wave Loading Spinner */
.loading-spinner {
    width: 80px;
    height: 80px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-spinner::before {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    border: 3px solid transparent;
    border-top: 3px solid var(--loading-primary);
    border-right: 3px solid var(--loading-secondary);
    border-radius: 50%;
    animation: oceanSpin 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

.loading-spinner::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    border: 2px solid transparent;
    border-bottom: 2px solid var(--loading-accent);
    border-left: 2px solid var(--loading-primary);
    border-radius: 50%;
    animation: oceanSpin 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite reverse;
}

/* Wave Animation */
@keyframes oceanSpin {
    0% { 
        transform: rotate(0deg) scale(1);
        opacity: 1;
    }
    50% { 
        transform: rotate(180deg) scale(1.1);
        opacity: 0.8;
    }
    100% { 
        transform: rotate(360deg) scale(1);
        opacity: 1;
    }
}

/* Beach Wave Effect */
.loading-waves {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 20px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--loading-primary) 25%, 
        var(--loading-secondary) 50%, 
        var(--loading-accent) 75%, 
        transparent 100%);
    border-radius: 50px;
    animation: beachWaves 2s ease-in-out infinite;
}

@keyframes beachWaves {
    0%, 100% { 
        transform: translateX(-50%) scaleX(1);
        opacity: 0.6;
    }
    50% { 
        transform: translateX(-50%) scaleX(1.2);
        opacity: 1;
    }
}

/* Beach Resort Loading Text */
.loading-text {
    color: var(--loading-text);
    font-family: var(--sbh-font-primary);
    font-size: 18px;
    font-weight: 600;
    margin-top: 30px;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    animation: beachPulse 2s ease-in-out infinite;
    letter-spacing: 0.5px;
}

@keyframes beachPulse {
    0%, 100% { 
        opacity: 0.8;
        transform: translateY(0);
    }
    50% { 
        opacity: 1;
        transform: translateY(-2px);
    }
}

/* Ocean Wave Progress Bar */
.loading-progress {
    width: 320px;
    height: 8px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    overflow: hidden;
    margin-top: 25px;
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.loading-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, 
        var(--loading-primary) 0%, 
        var(--loading-secondary) 25%, 
        var(--loading-accent) 50%, 
        var(--loading-secondary) 75%, 
        var(--loading-primary) 100%);
    background-size: 200% 100%;
    animation: oceanProgress 2.5s ease-in-out infinite;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}

.loading-progress-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.4) 50%, 
        transparent 100%);
    animation: shimmer 1.5s infinite;
}

@keyframes oceanProgress {
    0% { 
        background-position: 200% 0;
        width: 0%;
    }
    50% { 
        width: 75%;
    }
    100% { 
        background-position: -200% 0;
        width: 100%;
    }
}

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

/* Beach Resort Button Loading States */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.8;
    background: linear-gradient(135deg, var(--loading-primary), var(--loading-secondary)) !important;
    border: none !important;
    color: var(--sbh-white) !important;
    box-shadow: 0 4px 15px rgba(122, 180, 161, 0.3) !important;
    transform: scale(0.98);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-loading .btn-text {
    opacity: 0;
    transform: translateY(-2px);
}

.btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    height: 18px;
    margin: -9px 0 0 -9px;
    border: 2px solid transparent;
    border-top: 2px solid var(--sbh-white);
    border-right: 2px solid var(--sbh-white);
    border-radius: 50%;
    animation: beachSpin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

@keyframes beachSpin {
    0% { 
        transform: rotate(0deg) scale(1);
    }
    50% { 
        transform: rotate(180deg) scale(1.1);
    }
    100% { 
        transform: rotate(360deg) scale(1);
    }
}

/* Beach Resort Form Loading States */
.form-loading {
    position: relative;
    pointer-events: none;
    border-radius: var(--sbh-radius-lg);
    overflow: hidden;
}

.form-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(122, 180, 161, 0.1) 0%, 
        rgba(224, 143, 95, 0.1) 50%,
        rgba(225, 153, 133, 0.1) 100%);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: var(--sbh-radius-lg);
}

.form-loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 28px;
    height: 28px;
    margin: -14px 0 0 -14px;
    border: 3px solid transparent;
    border-top: 3px solid var(--loading-primary);
    border-right: 3px solid var(--loading-secondary);
    border-radius: 50%;
    animation: beachSpin 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
    z-index: 11;
}

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

.table-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.table-loading::before {
    content: 'Loading data...';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #6b7280;
    font-size: 14px;
    z-index: 11;
}

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

.card-loading::after {
    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;
}

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

/* Modal Loading States */
.modal-loading .modal-content {
    position: relative;
}

.modal-loading .modal-content::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 .modal-content::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 32px;
    height: 32px;
    margin: -16px 0 0 -16px;
    border: 4px solid rgba(59, 130, 246, 0.3);
    border-top: 4px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 11;
}

/* Beach Resort Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, 
        rgba(122, 180, 161, 0.1) 25%, 
        rgba(224, 143, 95, 0.2) 50%, 
        rgba(225, 153, 133, 0.1) 75%);
    background-size: 200% 100%;
    animation: beachSkeleton 2s ease-in-out infinite;
    border-radius: var(--sbh-radius-md);
    position: relative;
    overflow: hidden;
}

.skeleton::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.3) 50%, 
        transparent 100%);
    animation: skeletonShimmer 1.5s infinite;
}

@keyframes beachSkeleton {
    0% { 
        background-position: 200% 0;
        opacity: 0.8;
    }
    50% { 
        opacity: 1;
    }
    100% { 
        background-position: -200% 0;
        opacity: 0.8;
    }
}

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

.skeleton-text {
    height: 16px;
    margin-bottom: 8px;
}

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

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

.skeleton-text.long {
    width: 100%;
}

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

.skeleton-button {
    height: 36px;
    width: 100px;
    border-radius: 4px;
}

/* Inline Loading States */
.inline-loading {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #6b7280;
    font-size: 14px;
}

.inline-loading .spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(107, 114, 128, 0.3);
    border-top: 2px solid #6b7280;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Beach Resort Success/Error States */
.loading-success {
    color: var(--loading-primary);
    font-family: var(--sbh-font-primary);
    font-size: 18px;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    animation: successPulse 1s ease-in-out;
}

.loading-error {
    color: #e74c3c;
    font-family: var(--sbh-font-primary);
    font-size: 18px;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    animation: errorShake 0.5s ease-in-out;
}

@keyframes successPulse {
    0% { 
        transform: scale(1);
        opacity: 0.8;
    }
    50% { 
        transform: scale(1.05);
        opacity: 1;
    }
    100% { 
        transform: scale(1);
        opacity: 0.8;
    }
}

@keyframes errorShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Responsive Loading */
@media (max-width: 768px) {
    .loading-spinner {
        width: 50px;
        height: 50px;
        border-width: 3px;
    }
    
    .loading-text {
        font-size: 14px;
    }
    
    .loading-progress {
        width: 250px;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .loading-overlay {
        background: rgba(0, 0, 0, 0.8);
    }
    
    .form-loading::after,
    .table-loading::after,
    .modal-loading .modal-content::after {
        background: rgba(0, 0, 0, 0.8);
    }
    
    .skeleton {
        background: linear-gradient(90deg, #374151 25%, #4b5563 50%, #374151 75%);
    }
}

/* Special Beach Resort Loading Animations */
.loading-beach-waves {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--loading-primary) 20%, 
        var(--loading-secondary) 40%, 
        var(--loading-accent) 60%, 
        var(--loading-secondary) 80%, 
        transparent 100%);
    animation: beachWaveFlow 3s ease-in-out infinite;
    opacity: 0.6;
}

@keyframes beachWaveFlow {
    0%, 100% { 
        transform: translateX(-100%);
        opacity: 0.4;
    }
    50% { 
        transform: translateX(100%);
        opacity: 0.8;
    }
}

/* Floating Beach Elements */
.loading-floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

.loading-floating-elements::before,
.loading-floating-elements::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--loading-accent);
    border-radius: 50%;
    animation: floatUp 4s ease-in-out infinite;
}

.loading-floating-elements::before {
    left: 20%;
    animation-delay: 0s;
}

.loading-floating-elements::after {
    right: 20%;
    animation-delay: 2s;
}

@keyframes floatUp {
    0% { 
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% { 
        opacity: 1;
    }
    90% { 
        opacity: 1;
    }
    100% { 
        transform: translateY(-100px) scale(1);
        opacity: 0;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .loading-spinner,
    .loading-spinner::after,
    .btn-loading::after,
    .form-loading::before,
    .modal-loading .modal-content::before,
    .inline-loading .spinner {
        animation: none;
    }
    
    .loading-progress-bar {
        animation: none;
        width: 100%;
    }
    
    .skeleton,
    .card-loading::after,
    .loading-beach-waves,
    .loading-floating-elements::before,
    .loading-floating-elements::after {
        animation: none;
    }
}