/**
 * Custom Loading Spinner
 * Matches the original OG Met App loading animation
 */

/* ========================================
   CUSTOM LOADING SPINNER
   ======================================== */
._dash-loading-callback {
    display: none;
}

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

/* Fade in animation */
@keyframes fadein {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

/* ========================================
   LOADING OVERLAY (Optional)
   ======================================== */
._dash-loading {
    position: relative;
}

._dash-loading::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.1);
    z-index: 98999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

._dash-loading._dash-loading-callback::before {
    opacity: 1;
    pointer-events: all;
}

/* ========================================
   ALTERNATIVE SPINNER STYLES (Optional)
   ======================================== */

/* Small spinner for inline loading */
.spinner-small {
    border: 4px solid #f3f3f3;
    border-radius: 50%;
    border-top: 4px solid var(--trendline-logo-blue2);
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin: 0 auto;
}

/* Medium spinner */
.spinner-medium {
    border: 8px solid #f3f3f3;
    border-radius: 50%;
    border-top: 8px solid var(--trendline-logo-blue2);
    width: 60px;
    height: 60px;
    animation: spin 1.2s linear infinite;
    display: inline-block;
    margin: 0 auto;
}

/* ========================================
   LOADING TEXT
   ======================================== */
.loading-text {
    position: fixed;
    top: calc(50% + 80px);
    left: 50%;
    transform: translateX(-50%);
    color: var(--trendline-logo-blue2);
    font-size: 18px;
    font-weight: 400;
    z-index: 99001;
    opacity: 0;
    animation: fadein 1s linear forwards;
    animation-delay: 1s;
}

/* ========================================
   LOADING STATES FOR COMPONENTS
   ======================================== */

/* Button loading state */
.button-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.button-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-radius: 50%;
    border-top: 2px solid currentColor;
    animation: spin 0.8s linear infinite;
}

/* Card loading state */
[data-mantine-color-scheme="dark"] .card-loading {
    position: relative;
    min-height: 200px;
    opacity: 0.5;
    pointer-events: none;
}

[data-mantine-color-scheme="dark"] .card-loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin-left: -20px;
    margin-top: -20px;
    border: 4px solid #f3f3f3;
    border-radius: 50%;
    border-top: 4px solid var(--trendline-logo-blue2);
    animation: spin 1s linear infinite;
}

[data-mantine-color-scheme="light"] .card-loading {
    position: relative;
    min-height: 200px;
    opacity: 0.5;
    pointer-events: none;
}

[data-mantine-color-scheme="light"] .card-loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin-left: -20px;
    margin-top: -20px;
    border: 4px solid #e0e0e0;
    border-radius: 50%;
    border-top: 4px solid var(--trendline-logo-blue);
    animation: spin 1s linear infinite;
}

/* ========================================
   SKELETON LOADING (Alternative)
   ======================================== */
@keyframes skeleton-loading {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

[data-mantine-color-scheme="dark"] .skeleton {
    background-color: rgba(255, 255, 255, 0.05);
    background-image: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.05) 0px,
        rgba(255, 255, 255, 0.15) 40px,
        rgba(255, 255, 255, 0.05) 80px
    );
    background-size: 200px 100%;
    background-repeat: no-repeat;
    border-radius: var(--card-border-radius);
    display: inline-block;
    line-height: 1;
    width: 100%;
    animation: skeleton-loading 1.2s ease-in-out infinite;
}

[data-mantine-color-scheme="light"] .skeleton {
    background-color: #e0e0e0;
    background-image: linear-gradient(
        90deg,
        #e0e0e0 0px,
        #f0f0f0 40px,
        #e0e0e0 80px
    );
    background-size: 200px 100%;
    background-repeat: no-repeat;
    border-radius: var(--card-border-radius);
    display: inline-block;
    line-height: 1;
    width: 100%;
    animation: skeleton-loading 1.2s ease-in-out infinite;
}

/* ========================================
   PULSE LOADING EFFECT
   ======================================== */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.pulse-loading {
    animation: pulse 2s ease-in-out infinite;
}