/* ===== LOADER OVERLAY ===== */
#loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;

    z-index: 99999;

    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.5),
        rgba(245, 237, 255, 0.4)
    );

    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);

    opacity: 0;
    visibility: hidden;
    pointer-events: none;

    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

#loader-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
    animation: fadeInLoader 0.5s ease-out;
}

@keyframes fadeInLoader {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ===== TRUE VIEWPORT CENTER (TRANSFORM SAFE) ===== */
.loader-wrapper {
    position: fixed;

    /* viewport-based centering */
    top: 50vh;
    left: 50vw;
    transform: translate(-50%, -50%);

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    gap: 2rem;
    padding: 2rem;

    will-change: transform;
}

/* ===== ANIMATED PAW CONTAINER ===== */
.loader-container {
    position: relative;
    width: 120px;
    height: 120px;

    display: flex;
    align-items: center;
    justify-content: center;
}

.loader-paw {
    position: relative;
    z-index: 3;
    font-size: 2.5rem;
    color: #7c3aed;
    animation: pawBeat 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
    filter: drop-shadow(0 0 4px rgba(124, 58, 237, 0.3));
}

.loader-ring {
    position: absolute;
    inset: 0;
    border: 3px solid transparent;
    border-top-color: rgba(124, 58, 237, 0.4);
    border-right-color: rgba(124, 58, 237, 0.2);
    border-bottom-color: rgba(124, 58, 237, 0.1);
    border-radius: 50%;
    animation: rotate 2.5s linear infinite;
    box-shadow: inset 0 0 8px rgba(124, 58, 237, 0.1);
}

.loader-ring-inner {
    position: absolute;
    inset: 10%;
    border: 3px solid transparent;
    border-top-color: #a78bfa;
    border-right-color: #7c3aed;
    border-bottom-color: rgba(124, 58, 237, 0.2);
    border-radius: 50%;
    animation: rotateReverse 1.8s linear infinite;
    box-shadow: 0 0 12px rgba(124, 58, 237, 0.3);
}

/* ===== LOADING TEXT WITH DOTS ===== */
.loader-text {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-align: center;
}

.loader-message {
    font-size: 1rem;
    font-weight: 500;
    color: #5b21b6;
    letter-spacing: 0.5px;
}

.loader-dots {
    display: inline-flex;
    gap: 0.3rem;
    height: 1rem;
    align-items: flex-end;
}

.loader-dots .dot {
    width: 0.4rem;
    height: 0.4rem;
    background: #7c3aed;
    border-radius: 50%;
    animation: bounce 1.4s infinite;
}

.loader-dots .dot:nth-child(2) { animation-delay: 0.2s; }
.loader-dots .dot:nth-child(3) { animation-delay: 0.4s; }

/* ===== PROGRESS BAR ===== */
.loader-progress {
    width: 200px;
    height: 4px;
    background: rgba(124, 58, 237, 0.12);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 0 8px rgba(124, 58, 237, 0.1);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #7c3aed, #a78bfa, #ec4899, #7c3aed);
    background-size: 200% 100%;
    animation: progress 3.5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    box-shadow: 0 0 12px rgba(124, 58, 237, 0.6);
    border-radius: 10px;
}

/* ===== ANIMATIONS ===== */
@keyframes pawBeat {
    0%,100% { transform: scale(1) translateY(0); }
    50% { transform: scale(1.2) translateY(-10px); }
}

@keyframes rotate {
    to { transform: rotate(360deg); }
}

@keyframes rotateReverse {
    to { transform: rotate(-360deg); }
}

@keyframes bounce {
    0%,100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(-6px); opacity: 0.7; }
}

@keyframes progress {
    0% {
        width: 0%;
        opacity: 0.2;
        background-position: 200% 0;
    }
    25% {
        opacity: 0.8;
    }
    50% {
        width: 100%;
        opacity: 1;
        background-position: 100% 0;
    }
    75% {
        opacity: 0.8;
    }
    100% {
        width: 0%;
        opacity: 0.2;
        background-position: 0% 0;
    }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 480px) {
    .loader-wrapper {
        gap: 1.5rem;
        padding: 1rem;
    }

    .loader-container {
        width: 100px;
        height: 100px;
    }

    .loader-paw {
        font-size: 2rem;
    }

    .loader-message {
        font-size: 0.9rem;
    }

    .loader-progress {
        width: 150px;
    }
}