.sub-modal-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    padding: 24px;
}
.sub-modal-backdrop.open {
    display: flex;
    animation: subModalFadeIn 0.22s ease forwards;
}
@keyframes subModalFadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.sub-modal-card {
    background: #ffffff;
    border-radius: 20px;
    max-width: 820px;
    width: 100%;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.22);
    position: relative;
    overflow: hidden;
    animation: subModalSlideUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
@keyframes subModalSlideUp {
    from { opacity: 0; transform: translateY(28px) scale(0.96); }
    to   { opacity: 1; transform: translateY(0)   scale(1);    }
}

/* ── Two-column layout ── */
.sub-modal-layout {
    display: grid;
    grid-template-columns: 1fr 1.35fr;
    min-height: 480px;
}

/* ── Left column ── */
.sub-modal-left {
    background: linear-gradient(150deg, #4f46e5 0%, #7c3aed 60%, #6d28d9 100%);
    padding: 40px 32px;
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
    overflow: hidden;
}
.sub-modal-left::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
}
.sub-modal-left::after {
    content: '';
    position: absolute;
    bottom: -40px;
    left: -40px;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
}

.sub-modal-left-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: rgba(255,255,255,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    border: 1px solid rgba(255,255,255,0.2);
}
.sub-modal-left-icon svg { width: 24px; height: 24px; color: #fff; }

.sub-modal-left-heading {
    font-size: 1.55rem;
    font-weight: 800;
    color: #fff;
    margin: 0 0 6px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.2;
}
.sub-modal-left-sub {
    font-size: 0.84rem;
    color: rgba(255,255,255,0.7);
    margin: 0 0 28px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Plan display block */
.sub-modal-plan-display {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 14px;
    padding: 20px;
    margin-bottom: 24px;
    backdrop-filter: blur(4px);
}
.sub-modal-plan-display-name {
    font-size: 0.72rem;
    font-weight: 700;
    color: rgba(255,255,255,0.6);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 4px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
.sub-modal-plan-display-value {
    font-size: 1.15rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
.sub-modal-plan-display-price {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
.sub-modal-plan-display-price span {
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255,255,255,0.65);
    margin-left: 2px;
}

/* Features list */
.sub-modal-left-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: auto;
}
.sub-modal-left-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.83rem;
    color: rgba(255,255,255,0.88);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
.sub-modal-left-feature-check {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: rgba(255,255,255,0.18);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.sub-modal-left-feature-check svg { width: 10px; height: 10px; color: #fff; }

/* ── Right column ── */
.sub-modal-right {
    padding: 36px 32px 32px;
    display: flex;
    flex-direction: column;
    position: relative;
}

.sub-modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 32px;
    height: 32px;
    border: none;
    background: #f1f5f9;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
    padding: 0;
    z-index: 10;
}
.sub-modal-close:hover { background: #e2e8f0; }
.sub-modal-close svg { width: 14px; height: 14px; color: #64748b; }

.sub-modal-right-heading {
    font-size: 1.1rem;
    font-weight: 800;
    color: #0f172a;
    margin: 0 0 4px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
.sub-modal-right-sub {
    font-size: 0.8rem;
    color: #94a3b8;
    margin: 0 0 22px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

.sub-modal-fields { display: flex; flex-direction: column; gap: 14px; margin-bottom: 24px; }

.sub-modal-field { display: flex; flex-direction: column; gap: 5px; }
.sub-modal-label {
    font-size: 0.72rem;
    font-weight: 700;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
.sub-modal-value {
    font-size: 0.92rem;
    font-weight: 600;
    color: #0f172a;
    background: #f8fafc;
    border: 1.5px solid #e2e8f0;
    border-radius: 10px;
    padding: 10px 13px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 42px;
    word-break: break-all;
}
.sub-modal-value svg { width: 14px; height: 14px; color: #94a3b8; flex-shrink: 0; }
.sub-modal-value span { color: #0f172a; }
.sub-modal-value.empty span { color: #94a3b8; font-weight: 400; font-style: italic; }

.sub-modal-divider {
    height: 1px;
    background: #f1f5f9;
    margin: 4px 0 20px;
}

.sub-modal-btn-primary {
    width: 100%;
    padding: 13px 24px;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s, box-shadow 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.sub-modal-btn-primary:hover {
    opacity: 0.92;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}
.sub-modal-btn-primary:active { transform: scale(0.98); }
.sub-modal-btn-primary svg { width: 16px; height: 16px; }

.sub-modal-trust {
    text-align: center;
    font-size: 0.72rem;
    color: #94a3b8;
    margin-top: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
.sub-modal-trust svg { width: 11px; height: 11px; }

.sub-modal-loading {
    text-align: center;
    padding: 40px 0;
    color: #94a3b8;
    font-size: 0.88rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
.sub-modal-spinner {
    width: 28px;
    height: 28px;
    border: 3px solid #e2e8f0;
    border-top-color: #6366f1;
    border-radius: 50%;
    animation: subSpin 0.8s linear infinite;
    margin: 0 auto 10px;
}
@keyframes subSpin { to { transform: rotate(360deg); } }

/* ── Mobile: stack to single column ── */
@media (max-width: 600px) {
    .sub-modal-backdrop { padding: 12px; }
    .sub-modal-card { border-radius: 12px; max-height: 90vh; overflow-y: auto; }
    .sub-modal-layout { grid-template-columns: 1fr; min-height: auto; }
    .sub-modal-left {
        padding: 20px 16px 16px;
        border-radius: 0;
    }
    .sub-modal-left-icon { width: 36px; height: 36px; margin-bottom: 12px; }
    .sub-modal-left-icon svg { width: 18px; height: 18px; }
    .sub-modal-left-heading { font-size: 1.25rem; }
    .sub-modal-left-sub { margin: 0 0 16px; font-size: 0.75rem; }
    .sub-modal-plan-display { padding: 12px; margin-bottom: 12px; }
    .sub-modal-plan-display-price { font-size: 1.35rem; }
    .sub-modal-left-feature { font-size: 0.75rem; gap: 8px; }
    .sub-modal-right { padding: 16px 16px 20px; }
    .sub-modal-left-features { margin-top: 12px; gap: 6px; }
    .sub-modal-fields { gap: 10px; margin-bottom: 16px; }
    .sub-modal-value { padding: 8px 10px; min-height: 36px; font-size: 0.85rem; }
    .sub-modal-divider { margin: 4px 0 16px; }
    .sub-modal-btn-primary { padding: 10px 16px; font-size: 0.85rem; }
}