:root {
    --tool-btn-bg: #fff;
    --tool-btn-color: #000000;
    --primary-color: #4361ee;
    --secondary-color: #3a0ca3;
    --accent-color: #7209b7;
    --light-bg: #f8f9fa;
    --dark-text: #2b2d42;
    --light-text: #f8f9fa;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

#pdf-container {
    /* max-width: 900px; */
    width: 100%;
    margin: 2rem auto;
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

#pdf-loader {
    font-size: .9rem;
    text-align: center;
    margin: 20px 0;
    direction: rtl;
    animation: fadeInScale 1.5s ease-out infinite;
}

#slc_page {
    padding: 0 0.5rem;
    margin: 0.3rem 0rem;
    height: 1rem;
    min-height: 2rem;
    text-align: center;
    background: #eceffd;
    font-size: .8rem;
    width: auto;
    border-width: 1px;
    border-color: #aeaeae;
}

@keyframes fadeInScale {
    0% {
        opacity: .2;
        transform: scale(0.90);
    }

    100% {
        opacity: 1;
        transform: scale(1.02);
    }
}

/* نوار ابزار شیشه‌ای */
.glass-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    flex-wrap: nowrap;
    flex-direction: row;
    direction: ltr;
    gap: .3rem;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 0.2rem;
}

/* دکمه‌های ابزار */
.tool-btn {
    background: var(--tool-btn-bg);
    color: var(--tool-btn-color);
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 2rem;
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tool-btn:hover {
    /* background: var(--secondary-color); */
}

.tool-btn:active {
    /* transform: translateY(0); */
}

.circle-btn {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    padding: 0;
    justify-content: center;
}

/* نشانگر صفحه */
.page-indicator {
    background: rgba(67, 97, 238, 0.1);
    padding: 0.1rem .5rem;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--dark-text);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.separator {
    opacity: 0.6;
}

.zoom-level {
    min-width: 3rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--dark-text);
}

#pdf-viewer {
    /* border: 1px solid #ccc; */
    /* height: 600px; */
    overflow: auto;
    text-align: center;
    position: relative;
    cursor: grab;
    white-space: nowrap;
    /* اضافه می‌کنه تا canvas کنار نره */
}

#pdf-viewer canvas {
    display: inline-block;
    margin: 0 auto;
    max-width: unset !important;
    /* اجازه میده canvas بزرگ شه */
}

/* افکت‌های تعاملی */
.tool-btn span {
    transition: var(--transition);
}

.tool-btn:hover span {
    transform: scale(1.2);
}

/* حالت رسپانسیو */
@media (max-width: 768px) {
    /* .glass-toolbar {
        flex-direction: column-reverse;
        padding: 0.8rem;
    }

    .toolbar-group {
        width: 100%;
        justify-content: space-between;
    }

    .page-indicator {
        order: -1;
        width: 95%;
        justify-content: center;
    }

    #pdf-viewer {
        height: 60vh;
        padding: 1rem;
    } */
}

@media (max-width: 480px) {
    .page-indicator {
        padding: 0.1rem 0.5rem;
        font-size: 0.9rem;
    }

    .tool-btn {
        padding: 0.1rem 0.5rem;
        font-size: 1.4rem;
    }

    .circle-btn {
        width: 2rem;
        height: 2rem;
    }
}