/* ============================================================
   USNR Modal & Dialog Design System
   Step 20a — shared modal/alert/file-upload language used by
   public, admin, and portal scopes. Loaded after all scope CSS
   so it can layer on top of any palette.

   Components in this file:
     - .usnr-modal              modal shell with role variants
     - .usnr-flash              consolidated flash/alert block
     - .usnr-fileinput          enhanced file input wrapper
     - .usnr-confirm-modal      auto-generated confirmation modal
                                (used by usnr-confirm.js)

   None of these classes touch existing Bootstrap modal/alert
   markup unless the page opts in by adding the class.
   ============================================================ */

:root {
    /* ---- Modal shell ---- */
    --usnr-modal-radius:        12px;
    --usnr-modal-shadow:        0 20px 60px rgba(15, 23, 42, 0.18),
                                0 4px 14px rgba(15, 23, 42, 0.08);
    --usnr-modal-border:        rgba(15, 23, 42, 0.06);
    --usnr-modal-overlay:       rgba(15, 23, 42, 0.55);
    --usnr-modal-bg:            #ffffff;
    --usnr-modal-bg-soft:       #FAFBFC;
    --usnr-modal-ink:           #0F172A;
    --usnr-modal-ink-soft:      #1E293B;
    --usnr-modal-ink-muted:     #64748B;
    --usnr-modal-divider:       rgba(15, 23, 42, 0.06);

    /* ---- Header tile colors per role ---- */
    --usnr-tile-info-bg:    rgba(18, 59, 122, 0.10);
    --usnr-tile-info-ink:   #123B7A;
    --usnr-tile-success-bg: rgba(31, 122, 77, 0.10);
    --usnr-tile-success-ink:#1F7A4D;
    --usnr-tile-warning-bg: rgba(155, 90, 18, 0.10);
    --usnr-tile-warning-ink:#9B5A12;
    --usnr-tile-danger-bg:  rgba(180, 35, 24, 0.10);
    --usnr-tile-danger-ink: #B42318;
    --usnr-tile-secure-bg:  rgba(67, 56, 202, 0.10);
    --usnr-tile-secure-ink: #4338CA;
}

/* ============================================================
   1. MODAL SHELL — apply .usnr-modal to .modal-content
   ============================================================ */

.usnr-modal {
    background: var(--usnr-modal-bg);
    border: 1px solid var(--usnr-modal-border);
    border-radius: var(--usnr-modal-radius);
    box-shadow: var(--usnr-modal-shadow);
    overflow: hidden;
    color: var(--usnr-modal-ink-soft);
}

/* Backdrop — slightly darker than Bootstrap default so the
   modal feels lifted and the page surface dims meaningfully. */
.modal-backdrop.show {
    background-color: var(--usnr-modal-overlay);
    opacity: 1;
}

/* ---- Header ---- */
.usnr-modal__header {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1.25rem 1.5rem 1rem;
    border: none;
}
.usnr-modal__icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    line-height: 1;
    background: var(--usnr-tile-info-bg);
    color: var(--usnr-tile-info-ink);
}
.usnr-modal__title-wrap {
    flex-grow: 1;
    min-width: 0;
    padding-top: 0.125rem;
}
.usnr-modal__title {
    margin: 0;
    font-size: 1.0625rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--usnr-modal-ink);
    letter-spacing: -0.005em;
}
.usnr-modal__subtitle {
    margin: 0.25rem 0 0;
    font-size: 0.875rem;
    line-height: 1.45;
    color: var(--usnr-modal-ink-muted);
}
.usnr-modal__close {
    background: transparent;
    border: 0;
    padding: 0.25rem 0.375rem;
    color: var(--usnr-modal-ink-muted);
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    border-radius: 6px;
    flex-shrink: 0;
    transition: background 0.15s, color 0.15s;
}
.usnr-modal__close:hover,
.usnr-modal__close:focus-visible {
    background: rgba(15, 23, 42, 0.06);
    color: var(--usnr-modal-ink);
    outline: none;
}

/* ---- Body ---- */
.usnr-modal__body {
    padding: 0.5rem 1.5rem 1.25rem;
    color: var(--usnr-modal-ink-soft);
    line-height: 1.55;
    font-size: 0.9375rem;
}
.usnr-modal__body p:last-child { margin-bottom: 0; }

/* "What will happen" callout — used in destructive dialogs */
.usnr-modal__what-will-happen {
    margin-top: 0.875rem;
    padding: 0.75rem 1rem;
    background: var(--usnr-modal-bg-soft);
    border-left: 3px solid var(--usnr-modal-divider);
    border-radius: 0 6px 6px 0;
    font-size: 0.875rem;
}
.usnr-modal__what-will-happen ul {
    margin: 0.375rem 0 0 1.125rem;
    padding: 0;
}
.usnr-modal__what-will-happen ul > li + li {
    margin-top: 0.25rem;
}

/* ---- Footer ---- */
.usnr-modal__footer {
    padding: 1rem 1.5rem 1.25rem;
    border: none;
    border-top: 1px solid var(--usnr-modal-divider);
    background: var(--usnr-modal-bg-soft);
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
    flex-wrap: wrap;
}
.usnr-modal__footer .btn {
    min-width: 96px;
}

/* ============================================================
   2. ROLE VARIANTS — add modifier class to .usnr-modal
   ============================================================ */

.usnr-modal--info    .usnr-modal__icon { background: var(--usnr-tile-info-bg);    color: var(--usnr-tile-info-ink); }
.usnr-modal--success .usnr-modal__icon { background: var(--usnr-tile-success-bg); color: var(--usnr-tile-success-ink); }
.usnr-modal--warning .usnr-modal__icon { background: var(--usnr-tile-warning-bg); color: var(--usnr-tile-warning-ink); }
.usnr-modal--danger  .usnr-modal__icon { background: var(--usnr-tile-danger-bg);  color: var(--usnr-tile-danger-ink); }
.usnr-modal--secure  .usnr-modal__icon { background: var(--usnr-tile-secure-bg);  color: var(--usnr-tile-secure-ink); }

/* ============================================================
   3. MOBILE
   ============================================================ */

@media (max-width: 575.98px) {
    .modal-dialog { margin: 0.75rem; }

    .usnr-modal__header {
        padding: 1rem 1.125rem 0.75rem;
    }
    .usnr-modal__body {
        padding: 0.5rem 1.125rem 1rem;
        font-size: 0.9rem;
    }
    .usnr-modal__footer {
        padding: 0.875rem 1.125rem 1rem;
        flex-direction: column-reverse;
    }
    .usnr-modal__footer .btn {
        width: 100%;
        min-width: 0;
    }
}

/* ============================================================
   4. FLASH / ALERT — replacement for raw .alert markup
   Apply .usnr-flash + role modifier. Optionally include
   .usnr-flash--dismissible to render a close button.
   ============================================================ */

.usnr-flash {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    padding: 0.875rem 1rem;
    border: 1px solid;
    border-radius: 8px;
    line-height: 1.5;
    font-size: 0.9375rem;
    margin-bottom: 1rem;
    position: relative;
}
.usnr-flash__icon {
    flex-shrink: 0;
    font-size: 1.125rem;
    line-height: 1.35;
    padding-top: 0.0625rem;
}
.usnr-flash__body {
    flex-grow: 1;
    min-width: 0;
}
.usnr-flash__title {
    font-weight: 600;
    margin: 0 0 0.125rem;
}
.usnr-flash__close {
    background: transparent;
    border: 0;
    padding: 0.125rem 0.375rem;
    margin: -0.125rem -0.375rem -0.125rem 0;
    color: inherit;
    opacity: 0.55;
    cursor: pointer;
    border-radius: 4px;
    line-height: 1;
    align-self: flex-start;
    flex-shrink: 0;
}
.usnr-flash__close:hover { opacity: 1; }

.usnr-flash--success {
    background: rgba(31, 122, 77, 0.06);
    border-color: rgba(31, 122, 77, 0.20);
    color: #155534;
}
.usnr-flash--danger {
    background: rgba(180, 35, 24, 0.06);
    border-color: rgba(180, 35, 24, 0.20);
    color: #7F1D1D;
}
.usnr-flash--warning {
    background: rgba(155, 90, 18, 0.06);
    border-color: rgba(155, 90, 18, 0.20);
    color: #7A4314;
}
.usnr-flash--info {
    background: rgba(18, 59, 122, 0.06);
    border-color: rgba(18, 59, 122, 0.20);
    color: #1E3A6E;
}

/* ============================================================
   5. ENHANCED FILE INPUT
   Wrap a native <input type="file"> with .usnr-fileinput. JS
   (assets/js/usnr-fileinput.js, optional) updates filename
   text on change. Without JS, the field still works — it just
   shows the hint text and the browser-native button.
   ============================================================ */

.usnr-fileinput {
    display: block;
}
.usnr-fileinput__hint {
    font-size: 0.8125rem;
    color: var(--usnr-modal-ink-muted);
    margin-top: 0.25rem;
    line-height: 1.4;
}
.usnr-fileinput__hint strong { color: var(--usnr-modal-ink-soft); }
.usnr-fileinput__filename {
    font-size: 0.875rem;
    color: var(--usnr-tile-success-ink);
    margin-top: 0.25rem;
    display: none;
    align-items: center;
    gap: 0.375rem;
}
.usnr-fileinput__filename.is-active { display: inline-flex; }
.usnr-fileinput__error {
    font-size: 0.8125rem;
    color: var(--usnr-tile-danger-ink);
    margin-top: 0.25rem;
    display: none;
}
.usnr-fileinput__error.is-active { display: block; }

/* ============================================================
   6. AUTO-GENERATED CONFIRM MODAL
   Built by usnr-confirm.js when a form with
   data-usnr-confirm is submitted. Uses .usnr-modal markup so
   it inherits all of section 1.
   ============================================================ */

#usnrConfirmModal .usnr-modal {
    max-width: 480px;
    margin: auto;
}