/* ===== DentPlan3D AI Loader - full screen, looping bar ===== */
:root {
    --dp-cyan: #00C2FF;
    --dp-blue: #2E90FA;
    --dp-navy: #0A2540;
}

/* wrapper - keeps the loader markup grouped at the bottom of the page */
#progress_loader_container {
    display: contents;
}

#dp_loader {
    position: fixed;
    inset: 0;
    z-index: 99999;
    background: radial-gradient(circle at 50% 38%, #0e2c45 0%, #081a2b 60%, #050f1a 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    opacity: 1;
    transition: opacity .6s ease;
}

    /* fade-out then removal from layout */
    #dp_loader.dp-fade-out {
        opacity: 0;
    }

    #dp_loader.dp-hidden {
        display: none;
    }

/* ---- 3D rotating crown/tooth scene ---- */
.dp-scene {
    width: 160px;
    height: 160px;
    perspective: 600px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dp-cube {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    animation: dp-rotate 4.5s linear infinite;
}

@keyframes dp-rotate {
    0% {
        transform: rotateX(-18deg) rotateY(0deg);
    }

    100% {
        transform: rotateX(-18deg) rotateY(360deg);
    }
}

/* a stylised 3D tooth built from the emoji on rotating plates for depth */
.dp-face {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120px;
    height: 120px;
    margin: -60px 0 0 -60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 84px;
    filter: drop-shadow(0 0 18px rgba(0,194,255,.55));
}

    .dp-face.f1 {
        transform: rotateY(0deg) translateZ(8px);
    }

    .dp-face.f2 {
        transform: rotateY(120deg) translateZ(8px);
        opacity: .85;
    }

    .dp-face.f3 {
        transform: rotateY(240deg) translateZ(8px);
        opacity: .85;
    }

/* orbiting ring of dots (scanner feel) */
.dp-orbit {
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    border: 2px dashed rgba(0,194,255,.35);
    animation: dp-spin 3s linear infinite;
}

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

/* ---- text ---- */
#dp_loader .dp-msg {
    margin-top: 46px;
    color: #eaf6ff;
    font-size: 20px;
    font-weight: 600;
    min-height: 28px;
    text-align: center;
    padding: 0 30px;
    max-width: 560px;
    letter-spacing: .2px;
    animation: dp-pulse 2.4s ease-in-out infinite;
}

@keyframes dp-pulse {
    0%, 100% {
        opacity: .7;
    }

    50% {
        opacity: 1;
    }
}

#dp_loader .dp-sub {
    margin-top: 10px;
    color: #7fb7d8;
    font-size: 13px;
    letter-spacing: .5px;
    text-transform: uppercase;
}

/* ---- looping progress bar ---- */
#dp_loader .dp-track {
    position: relative;
    width: 320px;
    height: 8px;
    background: rgba(255,255,255,.10);
    border-radius: 8px;
    overflow: hidden;
    margin: 26px auto 0;
    box-shadow: 0 0 0 1px rgba(0,194,255,.15);
}

/* width is driven by JS (dpSetProgress) from the real model loading progress */
#dp_loader .dp-fill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg,var(--dp-blue),var(--dp-cyan));
    border-radius: 8px;
    box-shadow: 0 0 14px rgba(0,194,255,.7);
    transition: width .25s ease;
}