/* ==========================================================================
   PREVIEW — Conteneur d'aperçu et bannière d'erreur
   ========================================================================== */

.preview-container {
    flex: 1;
    overflow: auto;
    position: relative;
    background:
        radial-gradient(circle at 1px 1px, var(--border-subtle) 1px, transparent 0);
    background-size: 24px 24px;
    background-color: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--sp-4);
}

.preview {
    transition: transform var(--t-base);
    transform-origin: center center;
    cursor: grab;
    user-select: none;
    display: inline-block;
}

.preview:active { cursor: grabbing; }

.preview svg {
    max-width: 100%;
    height: auto;
    display: block;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.08));
}

[data-theme="dark"] .preview svg {
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.4));
}

/* État de chargement */
.preview.loading {
    opacity: 0.4;
    pointer-events: none;
}

/* Placeholder vide */
.preview-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-4);
    color: var(--text-tertiary);
    text-align: center;
    padding: var(--sp-8);
}

.preview-empty i {
    font-size: 3rem;
    opacity: 0.4;
}

.preview-empty p { margin: 0; font-size: var(--fs-sm); }

/* Bannière d'erreur */
.error-banner {
    position: absolute;
    bottom: var(--sp-4);
    left: var(--sp-4);
    right: var(--sp-4);
    padding: var(--sp-3) var(--sp-4);
    background: var(--danger-soft);
    border: 1px solid var(--danger);
    border-radius: var(--radius-md);
    color: var(--danger);
    display: flex;
    gap: var(--sp-3);
    align-items: flex-start;
    box-shadow: var(--shadow-md);
    max-height: 40%;
    overflow-y: auto;
    animation: slideUp var(--t-slow);
}

.error-banner i {
    font-size: var(--fs-lg);
    margin-top: 2px;
    flex-shrink: 0;
}

.error-banner pre {
    margin: 0;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--text-primary);
    white-space: pre-wrap;
    word-break: break-word;
    flex: 1;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Plein écran */
.preview-container.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 100;
    background-color: var(--bg-secondary);
}

/* Bouton de sortie du plein écran (visible uniquement en plein écran) */
.btn-fullscreen-exit {
    position: absolute;
    top: var(--sp-4);
    right: var(--sp-4);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-default);
    background: var(--surface);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    z-index: 110;
    font-size: var(--fs-lg);
    transition: all var(--t-fast);
}

.btn-fullscreen-exit:hover {
    background: var(--surface-hover);
    transform: scale(1.05);
}

.btn-fullscreen-exit:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}