/* PDF Viewer Pro – Frontend-Styles */

.pvp-viewer {
    position: relative;
    display: flex;
    flex-direction: column;
    background: #525659;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
    max-width: 100%;
    box-sizing: border-box;
    outline: none;
}

.pvp-viewer * {
    box-sizing: border-box;
}

/* Werkzeugleiste */
.pvp-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    background: var(--pvp-toolbar-bg, #2c3338);
    color: var(--pvp-toolbar-text, #fff);
    padding: 6px 10px;
    flex-shrink: 0;
    flex-wrap: nowrap;
    z-index: 3;
}

.pvp-toolbar-group {
    display: flex;
    align-items: center;
    gap: 4px;
}

.pvp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--pvp-toolbar-text, #fff);
    width: 36px;
    height: 36px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.15s ease;
    padding: 0;
}

.pvp-btn:hover:not(:disabled) {
    background: var(--pvp-toolbar-hover, rgba(255,255,255,0.15));
}

.pvp-btn:disabled {
    opacity: 0.35;
    cursor: default;
}

.pvp-page-info {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    white-space: nowrap;
}

.pvp-page-input {
    width: 42px;
    text-align: center;
    border-radius: 4px;
    border: 1px solid var(--pvp-toolbar-hover, rgba(255,255,255,0.3));
    background: var(--pvp-toolbar-hover, rgba(255,255,255,0.08));
    color: var(--pvp-toolbar-text, #fff);
    padding: 4px 2px;
    font-size: 13px;
    -moz-appearance: textfield;
}

.pvp-page-input::-webkit-outer-spin-button,
.pvp-page-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.pvp-page-input:focus {
    outline: none;
    border-color: var(--pvp-accent, #2271b1);
    box-shadow: 0 0 0 2px var(--pvp-accent, #2271b1);
}

.pvp-of-label {
    opacity: 0.85;
}

.pvp-zoom-level {
    font-size: 12px;
    min-width: 42px;
    text-align: center;
    opacity: 0.9;
}

/* Anzeigebereich */
.pvp-viewport {
    position: relative;
    flex: 1;
    overflow: auto;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 16px;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-y;
    min-height: 0;
}

.pvp-canvas-wrap {
    margin: auto;
    box-shadow: 0 2px 10px rgba(0,0,0,0.35);
    line-height: 0;
    background: #fff;
}

.pvp-canvas {
    display: block;
    max-width: none;
}

/* Lade-/Fehlerzustand */
.pvp-overlay,
.pvp-loading {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: #fff;
    background: #525659;
    font-size: 14px;
    z-index: 2;
}

.pvp-spinner {
    width: 34px;
    height: 34px;
    border: 3px solid rgba(255,255,255,0.25);
    border-top-color: #fff;
    border-radius: 50%;
    animation: pvp-spin 0.8s linear infinite;
}

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

.pvp-error {
    color: #ffb4b4;
    font-size: 14px;
    max-width: 80%;
    text-align: center;
}

/* Swipe-Hinweise (mobil) */
.pvp-swipe-hint {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(0,0,0,0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    z-index: 4;
}

.pvp-swipe-hint.pvp-visible {
    opacity: 1;
    animation: pvp-swipe-nudge 1.1s ease-in-out infinite;
}

.pvp-swipe-hint-left { left: 10px; }
.pvp-swipe-hint-right { right: 10px; }

.pvp-swipe-hint::before {
    content: '';
    width: 10px;
    height: 10px;
    border-top: 2px solid #fff;
    border-right: 2px solid #fff;
}

.pvp-swipe-hint-left::before { transform: rotate(-135deg) translate(2px, -2px); }
.pvp-swipe-hint-right::before { transform: rotate(45deg); }

@keyframes pvp-swipe-nudge {
    0%, 100% { transform: translateY(-50%) translateX(0); }
    50% { transform: translateY(-50%) translateX(6px); }
}

.pvp-swipe-hint-left.pvp-visible {
    animation-name: pvp-swipe-nudge-left;
}
@keyframes pvp-swipe-nudge-left {
    0%, 100% { transform: translateY(-50%) translateX(0); }
    50% { transform: translateY(-50%) translateX(-6px); }
}

/* Vollbildmodus */
.pvp-viewer:fullscreen,
.pvp-viewer.pvp-fullscreen-fallback {
    border-radius: 0;
    width: 100vw !important;
    height: 100vh !important;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100000;
}

.pvp-viewer:fullscreen .pvp-viewport,
.pvp-viewer.pvp-fullscreen-fallback .pvp-viewport {
    padding: 24px;
}

/* --------------------------------------- */
/* Mobile Optimierung                       */
/* --------------------------------------- */
@media (max-width: 782px) {
    .pvp-viewer {
        border-radius: 6px;
    }

    .pvp-toolbar {
        padding: 6px 4px;
        gap: 2px;
    }

    .pvp-btn {
        width: 40px;
        height: 40px;
    }

    .pvp-toolbar-group.pvp-toolbar-center {
        order: 3;
        width: 100%;
        justify-content: center;
        border-top: 1px solid var(--pvp-toolbar-hover, rgba(255,255,255,0.12));
        margin-top: 4px;
        padding-top: 4px;
    }

    .pvp-toolbar {
        flex-wrap: wrap;
    }

    .pvp-toolbar-left,
    .pvp-toolbar-right {
        flex: 1;
    }

    .pvp-toolbar-right {
        justify-content: flex-end;
    }

    .pvp-page-input {
        width: 36px;
        font-size: 14px;
    }

    .pvp-viewport {
        padding: 8px;
    }

    .pvp-of-label {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .pvp-toolbar-right .pvp-btn[data-action="download"],
    .pvp-toolbar-right .pvp-btn[data-action="print"] {
        display: none; /* Platz sparen auf sehr kleinen Screens; per CSS überschreibbar */
    }
}

/* Reduzierte Bewegung berücksichtigen */
@media (prefers-reduced-motion: reduce) {
    .pvp-spinner,
    .pvp-swipe-hint.pvp-visible {
        animation: none;
    }
}