/* ── NidhiBook Confirm/Prompt Modals ── */
.nb-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    z-index: 99990;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.18s ease;
    padding: 16px;
}

.nb-modal-backdrop.nb-modal-open { opacity: 1; }

.nb-modal {
    background: var(--nb-card-bg, #fff);
    color: var(--nb-text-1, #1a1a1a);
    border: 1px solid var(--nb-card-bdr, #e5e7eb);
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
    width: 100%;
    max-width: 440px;
    overflow: hidden;
    transform: translateY(-20px) scale(0.95);
    transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

.nb-modal-backdrop.nb-modal-open .nb-modal { transform: translateY(0) scale(1); }

.nb-modal-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 22px 14px;
    border-bottom: 1px solid var(--nb-card-bdr, #e5e7eb);
}

.nb-modal-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.nb-modal-confirm .nb-modal-icon { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.nb-modal-danger  .nb-modal-icon { background: rgba(220, 38, 38, 0.15); color: #dc2626; }
.nb-modal-info    .nb-modal-icon { background: rgba(14, 165, 233, 0.15); color: #0ea5e9; }
.nb-modal-success .nb-modal-icon { background: rgba(22, 163, 74, 0.15); color: #16a34a; }

.nb-modal-title {
    font-size: 16px;
    font-weight: 700;
    margin: 0;
    flex: 1;
}

.nb-modal-body {
    padding: 18px 22px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--nb-text-2, #374151);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.nb-modal-input {
    width: 100%;
    margin-top: 12px;
    padding: 10px 12px;
    border: 1px solid var(--nb-card-bdr, #d1d5db);
    border-radius: 6px;
    background: var(--nb-bg, #fff);
    color: var(--nb-text-1, #1a1a1a);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.nb-modal-input:focus {
    border-color: var(--nb-accent, #f26522);
    box-shadow: 0 0 0 3px rgba(242, 101, 34, 0.15);
}

.nb-modal-footer {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    padding: 14px 22px 18px;
    border-top: 1px solid var(--nb-card-bdr, #e5e7eb);
    background: var(--nb-s-bg, #f9fafb);
}

.nb-modal-btn {
    padding: 8px 18px;
    border-radius: 6px;
    border: 1px solid transparent;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    font-family: inherit;
    min-width: 90px;
}

.nb-modal-btn-cancel {
    background: var(--nb-card-bg, #fff);
    color: var(--nb-text-2, #374151);
    border-color: var(--nb-card-bdr, #d1d5db);
}

.nb-modal-btn-cancel:hover {
    background: var(--nb-s-hover-bg, #f3f4f6);
}

.nb-modal-btn-ok {
    background: var(--nb-accent, #f26522);
    color: #fff;
    border-color: var(--nb-accent, #f26522);
}

.nb-modal-btn-ok:hover { filter: brightness(0.92); }

.nb-modal-danger .nb-modal-btn-ok {
    background: #dc2626;
    border-color: #dc2626;
}

.nb-modal-btn:focus { outline: 2px solid var(--nb-accent, #f26522); outline-offset: 2px; }

@media (max-width: 480px) {
    .nb-modal-footer { flex-direction: column-reverse; }
    .nb-modal-btn { width: 100%; }
}