/* ==========================================================================
   Modal & Toast
   ========================================================================== */

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    background: var(--surface-overlay);
    backdrop-filter: blur(2px);
    animation: modalOverlayIn var(--duration-base) var(--ease-out);
}
.modal-overlay.hidden { display: none !important; }

.modal {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 560px;
    max-height: min(86vh, 800px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    background: var(--surface-raised);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: modalIn var(--duration-base) var(--ease-out);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    flex-shrink: 0;
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
}

.modal-title {
    font-size: var(--fs-16);
    font-weight: var(--fw-semibold);
    color: var(--text-primary);
}

.modal-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border-radius: var(--radius-sm);
    background: none;
    border: 0;
    color: var(--text-muted);
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    transition: background-color var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
}
.modal-close:hover {
    background: var(--surface-sunken);
    color: var(--text-primary);
}

.modal-body {
    flex: 1;
    min-height: 0;
    padding: var(--space-5);
    overflow-y: auto;
    color: var(--text-secondary);
    font-size: var(--fs-14);
    line-height: var(--lh-normal);
}
.modal-body p + p { margin-top: var(--space-3); }
.modal-body-flush { padding: 0; }

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-2);
    flex-shrink: 0;
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border-subtle);
    background: var(--surface-base);
}
.modal-footer:empty { display: none; }

.modal-lg { max-width: 860px; }
.modal-sm { max-width: 420px; }

@keyframes modalOverlayIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes modalIn {
    from { opacity: 0; transform: translateY(8px) scale(0.985); }
    to   { opacity: 1; transform: none; }
}

@media (max-width: 640px) {
    .modal-overlay { padding: var(--space-3); align-items: flex-end; }
    .modal { max-height: 92vh; }
    .modal-header,
    .modal-footer { padding: var(--space-3) var(--space-4); }
    .modal-body { padding: var(--space-4); }
}

/* ==========================================================================
   File-Preview (Lightbox) — liegt über dem Modal
   ========================================================================== */

.file-preview {
    position: fixed;
    inset: 0;
    z-index: var(--z-lightbox);
    display: flex;
    flex-direction: column;
    background: rgba(0, 0, 0, 0.82);
    backdrop-filter: blur(2px);
    animation: modalOverlayIn var(--duration-base) var(--ease-out);
}
.file-preview.hidden { display: none !important; }

.file-preview-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    flex-shrink: 0;
    padding: var(--space-3) var(--space-4);
    background: var(--surface-raised);
    border-bottom: 1px solid var(--border-subtle);
}

.file-preview-name {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: var(--fs-14);
    font-weight: var(--fw-medium);
    color: var(--text-primary);
}

.file-preview-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}
.file-preview-count {
    font-size: var(--fs-12);
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

.file-preview-stage {
    flex: 1;
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
}

.file-preview-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    background: var(--surface-raised);
}

.file-preview-frame {
    width: 100%;
    height: 100%;
    border: 0;
    border-radius: var(--radius-md);
    background: var(--surface-raised);
}

.file-preview-fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-8) var(--space-10);
    border-radius: var(--radius-lg);
    background: var(--surface-raised);
    color: var(--text-secondary);
    text-align: center;
}
.file-preview-ext {
    font-size: var(--fs-20, 20px);
    font-weight: var(--fw-semibold);
    letter-spacing: 0.06em;
    color: var(--text-muted);
}

body.has-file-preview { overflow: hidden; }

/* ==========================================================================
   Toast
   ========================================================================== */

.toast-container {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-width: 300px;
    max-width: 420px;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--border-subtle);
    border-left: 3px solid var(--border-strong);
    border-radius: var(--radius-md);
    background: var(--surface-raised);
    box-shadow: var(--shadow-md);
    color: var(--text-primary);
    font-size: var(--fs-14);
    pointer-events: auto;
    animation: toastIn var(--duration-slow) var(--ease-out);
}

.toast-text {
    flex: 1;
    min-width: 0;
    line-height: var(--lh-snug);
    word-break: break-word;
    /* Mehrzeilige Validierungsfehler (ein Feld pro Zeile) sollen umbrechen. */
    white-space: pre-line;
}

.toast-copy {
    flex-shrink: 0;
    padding: 3px var(--space-2);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xs);
    background: none;
    color: var(--text-muted);
    font-size: var(--fs-11);
    white-space: nowrap;
    cursor: pointer;
    transition: border-color var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
}
.toast-copy:hover {
    border-color: var(--border-strong);
    color: var(--text-primary);
}

.toast-success { border-left-color: var(--success); }
.toast-error   { border-left-color: var(--danger); }
.toast-info    { border-left-color: var(--info); }
.toast-warning { border-left-color: var(--warning); }

@keyframes toastIn {
    from { opacity: 0; transform: translateX(16px); }
    to   { opacity: 1; transform: none; }
}

@media (max-width: 640px) {
    .toast-container {
        top: auto;
        bottom: var(--space-4);
        left: var(--space-3);
        right: var(--space-3);
    }
    .toast { min-width: 0; max-width: none; }
}