/* =====================================================
   PDF PREVIEW COMPONENT
   Componente reutilizable para previsualizar PDFs
   ===================================================== */

/* Variables CSS para temas */
.pdf-preview-container {
    --pdf-toolbar-bg: #2d2d2d;
    --pdf-toolbar-text: #ffffff;
    --pdf-content-bg: #525659;
    --pdf-btn-hover: #404040;
    --pdf-border-color: #555555;
    --pdf-input-bg: #404040;
    --pdf-canvas-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.pdf-preview--light {
    --pdf-toolbar-bg: #f5f5f5;
    --pdf-toolbar-text: #333333;
    --pdf-content-bg: #e0e0e0;
    --pdf-btn-hover: #e0e0e0;
    --pdf-border-color: #cccccc;
    --pdf-input-bg: #ffffff;
    --pdf-canvas-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

/* Contenedor principal */
.pdf-preview-container {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    background: var(--pdf-toolbar-bg);
    position: relative;
}

    .pdf-preview-container:fullscreen {
        border-radius: 0;
    }

        .pdf-preview-container:fullscreen .pdf-preview-content {
            height: calc(100vh - 52px) !important;
            max-height: none !important;
        }

/* =====================================================
   TOOLBAR
   ===================================================== */

.pdf-preview-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--pdf-toolbar-bg);
    padding: 0.5rem 0.75rem;
    color: var(--pdf-toolbar-text);
    flex-wrap: wrap;
    gap: 0.5rem;
    min-height: 44px;
}

.pdf-preview-toolbar-left,
.pdf-preview-toolbar-center,
.pdf-preview-toolbar-right {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.pdf-preview-toolbar-left {
    flex: 0 1 auto;
    min-width: 0;
}

.pdf-preview-toolbar-center {
    flex: 1 1 auto;
    justify-content: center;
}

.pdf-preview-toolbar-right {
    flex: 0 1 auto;
}

/* Título del documento */
.pdf-preview-title {
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
    margin-left: 0.5rem;
}

/* Separador vertical */
.pdf-preview-separator {
    width: 1px;
    height: 20px;
    background: var(--pdf-border-color);
    margin: 0 0.5rem;
}

/* =====================================================
   BOTONES
   ===================================================== */

.pdf-preview-btn {
    background: none;
    border: none;
    color: var(--pdf-toolbar-text);
    font-size: 0.95rem;
    cursor: pointer;
    padding: 0.4rem 0.5rem;
    border-radius: 4px;
    transition: background 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    min-height: 32px;
    text-decoration: none;
}

    .pdf-preview-btn:hover {
        background: var(--pdf-btn-hover);
    }

    .pdf-preview-btn:active {
        transform: scale(0.95);
    }

    .pdf-preview-btn:disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }

.pdf-preview-btn-secondary {
    background: var(--pdf-btn-hover);
    border: 1px solid var(--pdf-border-color);
    color: var(--pdf-toolbar-text);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

    .pdf-preview-btn-secondary:hover {
        background: var(--pdf-border-color);
    }

/* =====================================================
   NAVEGACIÓN DE PÁGINAS
   ===================================================== */

.pdf-preview-page-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.pdf-preview-page-info {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.85rem;
    margin: 0 0.25rem;
}

.pdf-preview-page-input {
    width: 40px;
    background: var(--pdf-input-bg);
    border: 1px solid var(--pdf-border-color);
    border-radius: 4px;
    color: var(--pdf-toolbar-text);
    text-align: center;
    padding: 0.25rem;
    font-size: 0.85rem;
}

    .pdf-preview-page-input:focus {
        outline: none;
        border-color: #007bff;
    }

/* =====================================================
   CONTROLES DE ZOOM
   ===================================================== */

.pdf-preview-zoom-controls {
    display: flex;
    align-items: center;
    gap: 0.125rem;
}

.pdf-preview-zoom-value {
    background: var(--pdf-input-bg);
    border: 1px solid var(--pdf-border-color);
    border-radius: 4px;
    color: var(--pdf-toolbar-text);
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    min-width: 55px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

    .pdf-preview-zoom-value:hover {
        border-color: #007bff;
    }

/* =====================================================
   MENÚ DE ZOOM
   ===================================================== */

.pdf-preview-zoom-menu {
    position: absolute;
    top: 50px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--pdf-toolbar-bg);
    border: 1px solid var(--pdf-border-color);
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    min-width: 150px;
    padding: 0.25rem 0;
}

    .pdf-preview-zoom-menu button {
        display: block;
        width: 100%;
        padding: 0.5rem 1rem;
        background: none;
        border: none;
        color: var(--pdf-toolbar-text);
        text-align: left;
        cursor: pointer;
        font-size: 0.85rem;
    }

        .pdf-preview-zoom-menu button:hover {
            background: var(--pdf-btn-hover);
        }

    .pdf-preview-zoom-menu hr {
        border: none;
        border-top: 1px solid var(--pdf-border-color);
        margin: 0.25rem 0;
    }

/* =====================================================
   CONTENIDO DEL PDF
   ===================================================== */

.pdf-preview-content {
    background: var(--pdf-content-bg);
    min-height: 300px;
    max-height: 70vh;
    overflow: auto;
    position: relative;
}

.pdf-preview-canvas-wrapper {
    min-height: 100%;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 1rem;
}

.pdf-preview-canvas-container {
    background: white;
    box-shadow: var(--pdf-canvas-shadow);
    line-height: 0;
}

    .pdf-preview-canvas-container canvas {
        display: block;
        max-width: 100%;
    }

/* =====================================================
   ESTADOS: CARGANDO Y ERROR
   ===================================================== */

.pdf-preview-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    color: var(--pdf-toolbar-text);
    padding: 2rem;
    gap: 1rem;
    text-align: center;
}

/* Spinner de carga */
.pdf-preview-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--pdf-border-color);
    border-top-color: #007bff;
    border-radius: 50%;
    animation: pdf-preview-spin 1s linear infinite;
}

@keyframes pdf-preview-spin {
    to {
        transform: rotate(360deg);
    }
}

/* Estado de error */
.pdf-preview-error i {
    font-size: 2.5rem;
    color: #dc3545;
}

.pdf-preview-error-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* =====================================================
   RESPONSIVE
   ===================================================== */

@media (max-width: 768px) {
    .pdf-preview-toolbar {
        padding: 0.4rem 0.5rem;
    }

    .pdf-preview-title {
        max-width: 100px;
        font-size: 0.8rem;
    }

    .pdf-preview-toolbar-center {
        order: 3;
        width: 100%;
        justify-content: center;
        padding-top: 0.25rem;
        border-top: 1px solid var(--pdf-border-color);
        margin-top: 0.25rem;
    }

    .pdf-preview-separator {
        display: none;
    }

    .pdf-preview-btn {
        padding: 0.35rem 0.4rem;
        min-width: 28px;
        min-height: 28px;
        font-size: 0.85rem;
    }

    .pdf-preview-zoom-value {
        min-width: 45px;
        font-size: 0.75rem;
    }

    .pdf-preview-page-input {
        width: 35px;
        font-size: 0.8rem;
    }

    .pdf-preview-content {
        min-height: 250px;
    }

    .pdf-preview-canvas-wrapper {
        padding: 0.5rem;
    }
}

@media (max-width: 480px) {
    .pdf-preview-toolbar-left .pdf-preview-menu-btn {
        display: none;
    }

    .pdf-preview-title {
        max-width: 80px;
    }

    .pdf-preview-more-btn {
        display: inline-flex;
    }

    /* Ocultar algunos botones en móvil */
    .pdf-preview-toolbar-center [data-action="fit-width"],
    .pdf-preview-toolbar-center [data-action="fit-page"],
    .pdf-preview-toolbar-center [data-action="rotate"] {
        display: none;
    }
}

/* =====================================================
   UTILIDADES
   ===================================================== */

.pdf-preview-hidden {
    display: none !important;
}