/*
 * PTG Page Loader (60-loader.css)
 * لودر برند صدیقی — مرجع قطعی: saddiqi-loader-live-demo.html
 * فقط transform/opacity انیمیت می‌شوند (GPU-friendly). بدون کارت، سایه سنگین یا گرادیان.
 */

.ptg-loader {
    --ptg-loader-bg: #FCFCFC;
    --ptg-loader-track: #E8EAED;
    --ptg-loader-red: #E2232A;
    --ptg-loader-green: #14915D;

    position: fixed;
    inset: 0;
    z-index: 4000;
    display: grid;
    place-items: center;
    background: var(--ptg-loader-bg);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity .18s cubic-bezier(.2, .8, .2, 1), visibility 0s linear .18s;
}

.ptg-loader.is-active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: opacity .18s cubic-bezier(.2, .8, .2, 1);
}

/* دسکتاپ: فقط ناحیهٔ محتوا پوشانده می‌شود؛ سایدبار دیده می‌ماند.
   inset-inline-start در RTL به right و در LTR به left نگاشت می‌شود. */
@media (min-width: 1200px) {
    body.app-shell-authenticated .ptg-loader {
        inset-inline-start: var(--layout-sidebar, 304px);
    }

    body.app-shell-authenticated.is-sidebar-collapsed .ptg-loader {
        inset-inline-start: var(--layout-sidebar-mini, 56px);
    }
}

.ptg-loader__box {
    position: relative;
    width: 148px;
    height: 148px;
    transform: translateY(-40px);
}

.ptg-loader__stage {
    position: absolute;
    inset: 0;
}

.ptg-loader.is-active .ptg-loader__stage {
    animation: ptg-loader-enter .18s cubic-bezier(.2, .8, .2, 1) both;
}

.ptg-loader__ring {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    overflow: visible;
}

.ptg-loader__track {
    fill: none;
    stroke: var(--ptg-loader-track);
    stroke-width: 1.4;
}

.ptg-loader__arc {
    fill: none;
    stroke-linecap: round;
    transform-box: view-box;
    transform-origin: 74px 74px;
    will-change: transform;
}

.ptg-loader__arc--red {
    stroke: var(--ptg-loader-red);
    stroke-width: 3.1;
    stroke-dasharray: 78 248;
    animation: ptg-loader-spin 1.25s linear infinite;
}

.ptg-loader__arc--red-soft {
    stroke: var(--ptg-loader-red);
    stroke-width: 2.2;
    stroke-opacity: .42;
    stroke-dasharray: 34 292;
    transform: rotate(155deg);
    animation: ptg-loader-spin 1.65s linear infinite;
}

.ptg-loader__arc--green {
    stroke: var(--ptg-loader-green);
    stroke-width: 3.1;
    stroke-dasharray: 62 203;
    animation: ptg-loader-spin-rev 2.1s linear infinite;
}

.ptg-loader__arc--green-soft {
    stroke: var(--ptg-loader-green);
    stroke-width: 2.1;
    stroke-opacity: .4;
    stroke-dasharray: 29 236;
    transform: rotate(145deg);
    animation: ptg-loader-spin-rev 2.45s linear infinite;
}

.ptg-loader__halo {
    position: absolute;
    inset: 26px;
    width: 96px;
    height: 96px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(226, 35, 42, .08), rgba(20, 145, 93, .035) 48%, transparent 72%);
    filter: blur(8px);
    animation: ptg-loader-halo 1.8s ease-in-out infinite;
}

.ptg-loader__brand {
    position: absolute;
    left: 35px;
    top: 35px;
    width: 78px;
    height: 78px;
    object-fit: contain;
    transform-origin: center;
    filter: drop-shadow(0 8px 14px rgba(37, 42, 48, .08));
    animation: ptg-loader-breathe 1.8s ease-in-out infinite;
    user-select: none;
    pointer-events: none;
}

.ptg-loader__sr {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

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

@keyframes ptg-loader-breathe {
    0%, 100% { transform: scale(.985); }
    50% { transform: scale(1.018); }
}

@keyframes ptg-loader-halo {
    0%, 100% { transform: scale(.95); opacity: .45; }
    50% { transform: scale(1.08); opacity: .8; }
}

@keyframes ptg-loader-enter {
    from { opacity: 0; transform: scale(.965); }
    to { opacity: 1; transform: scale(1); }
}

@media (max-width: 640px) {
    .ptg-loader__box {
        width: 128px;
        height: 128px;
        transform: none;
    }

    .ptg-loader__ring {
        transform: scale(.865);
        transform-origin: top left;
    }

    .ptg-loader__halo {
        inset: 22px;
        width: 84px;
        height: 84px;
    }

    .ptg-loader__brand {
        left: 31px;
        top: 31px;
        width: 66px;
        height: 66px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .ptg-loader__arc { animation: none; }
    .ptg-loader__brand,
    .ptg-loader__halo { animation-duration: 2.8s; }
    .ptg-loader.is-active .ptg-loader__stage { animation: none; }
}

@media print {
    .ptg-loader { display: none !important; }
}

/* ---------------------------------------------------------------------------
 * نوار پیشرفت ناوبری (SPA) — جدا از لودر لوگو.
 * فقط transform/opacity انیمیت می‌شود (GPU-friendly). ارتفاع 3px، بدون overlay.
 * ------------------------------------------------------------------------- */
.ptg-nav-progress {
    position: fixed;
    top: 0;
    inset-inline: 0;
    height: 3px;
    z-index: 4100;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity .18s ease;
}

.ptg-nav-progress__bar {
    width: 100%;
    height: 100%;
    transform: scaleX(0);
    transform-origin: left center;
    background: linear-gradient(90deg, var(--ptg-loader-red, #E2232A), var(--ptg-loader-green, #14915D));
    box-shadow: 0 0 8px rgba(226, 35, 42, .35);
    will-change: transform;
}

[dir="rtl"] .ptg-nav-progress__bar {
    transform-origin: right center;
}

.ptg-nav-progress.is-active {
    opacity: 1;
    visibility: visible;
}

/* رشد آهسته تا 90% وقتی پاسخ سرور دیر می‌آید (بدون توقف مصنوعی). */
.ptg-nav-progress.is-active .ptg-nav-progress__bar {
    transform: scaleX(.9);
    transition: transform 8s cubic-bezier(.1, .7, .1, 1);
}

/* پایان: سریع کامل و محو. */
.ptg-nav-progress.is-done {
    opacity: 0;
    transition: opacity .2s ease .05s;
}

.ptg-nav-progress.is-done .ptg-nav-progress__bar {
    transform: scaleX(1);
    transition: transform .15s ease;
}

@media (prefers-reduced-motion: reduce) {
    .ptg-nav-progress.is-active .ptg-nav-progress__bar { transition: none; }
}

@media print {
    .ptg-nav-progress { display: none !important; }
}