/* ============================================
   ADF System - Global Loading Indicator
   Top progress bar (AJAX/background) + full
   overlay (page navigation / heavy actions)
   Same design as the karimunjawa-explore system.
   ============================================ */

#adf-loader-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: linear-gradient(90deg, #6366f1, #0ea5e9, #22d3ee);
    background-size: 200% 100%;
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.7), 0 0 3px rgba(14, 165, 233, 0.9);
    z-index: 2147483647;
    opacity: 0;
    transition: width 0.25s ease-out, opacity 0.2s ease-in-out;
    animation: adf-loader-bar-flow 1.4s linear infinite;
    pointer-events: none;
}

#adf-loader-bar.adf-active {
    opacity: 1;
}

@keyframes adf-loader-bar-flow {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 0%; }
}

#adf-loader-overlay {
    position: fixed;
    inset: 0;
    z-index: 2147483646;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease-in-out;
}

#adf-loader-overlay.adf-active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.adf-loader-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    padding: 28px 36px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 20px 45px -12px rgba(15, 23, 42, 0.45);
    transform: translateY(6px) scale(0.96);
    transition: transform 0.25s cubic-bezier(.34, 1.56, .64, 1);
}

#adf-loader-overlay.adf-active .adf-loader-box {
    transform: translateY(0) scale(1);
}

.adf-loader-spinner {
    position: relative;
    width: 68px;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.adf-loader-spinner::before,
.adf-loader-spinner::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 3px solid transparent;
}

.adf-loader-spinner::before {
    border-top-color: #6366f1;
    border-right-color: #6366f1;
    animation: adf-loader-spin 0.9s linear infinite;
}

.adf-loader-spinner::after {
    inset: 6px;
    border-bottom-color: #0ea5e9;
    animation: adf-loader-spin 1.3s linear infinite reverse;
}

@keyframes adf-loader-spin {
    to { transform: rotate(360deg); }
}

.adf-loader-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: 8px;
    animation: adf-loader-pulse 1.6s ease-in-out infinite;
    /* Force the logo to render gold, regardless of its original PNG colors:
       brightness(0) flattens it to a black silhouette (keeps transparency),
       the rest re-tints that silhouette to a gold tone (~#D4AF37). */
    filter: brightness(0) saturate(100%) invert(72%) sepia(46%) saturate(923%) hue-rotate(1deg) brightness(101%) contrast(92%);
}

@keyframes adf-loader-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(0.9); opacity: 0.75; }
}

.adf-loader-text {
    font-family: 'Inter', 'Poppins', system-ui, sans-serif;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: #334155;
}

@media (prefers-reduced-motion: reduce) {
    .adf-loader-spinner::before,
    .adf-loader-spinner::after,
    .adf-loader-logo,
    #adf-loader-bar {
        animation: none !important;
    }
}