.loading_card {
    width: min(92vw, 560px);
    padding: 32px 28px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    text-align: center;
    position: relative;
    z-index: 100;
}

.loading_spinner {
    width: 56px;
    height: 56px;
    margin: 0 auto 18px;
    border-radius: 50%;
    border: 4px solid rgba(148, 163, 184, 0.25);
    border-top-color: var(--accent);
    animation: loading_spin 1s linear infinite;
}

.loading_overlay.open{ 
    display:flex; 
    position: fixed;
    z-index: 999;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    min-width: 100vw;
    background: rgba(0, 0, 0, 0.8);
    top: 0;
}

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

.loading_title {
    font-size: clamp(20px, 4vw, 24px);
    font-weight: 700;
    margin: 0 0 6px;
}

.loading_subtitle {
    font-size: 14px;
    color: var(--muted);
    margin: 0 0 16px;
}

.loading_message {
    font-size: clamp(18px, 3.6vw, 20px);
    font-weight: 600;
    line-height: 1.4;
    min-height: 1.4em;
    margin-top: 6px;
    transition: opacity .35s ease, transform .35s ease;
}

.loading_fade-out { opacity: 0; transform: translateY(4px); }
.loading_fade-in  { opacity: 1; transform: translateY(0); }

.loading_progressLoading {
    position: relative;
    height: 6px;
    background: rgba(148,163,184,0.2);
    border-radius: 999px;
    overflow: hidden;
    margin-top: 18px;
}

.loading_progressLoading::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    width: 40%;
    translate: -100% 0;
    animation: loading_indeterminate 1.4s ease-in-out infinite;
}

@keyframes loading_indeterminate {
    0%   { translate: -100% 0; }
    50%  { translate: 20% 0; }
    100% { translate: 120% 0; }
}

.loading_tips {
    margin-top: 16px;
    font-size: 12px;
    color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
    .loading_spinner { animation: none; border-top-color: var(--muted); }
    .loading_message { transition: none; }
    .loading_progressLoading::before { animation: none; width: 100%; translate: 0 0; }
}