:root {
    --epaper-primary: #e61a22;
    --epaper-dark: #1a1a1a;
    --epaper-light-bg: #f5f6f8;
    --epaper-border: #dcdcdc;
    --header-height: 70px;
    --sidebar-width: 260px;
}

body { margin: 0; padding: 0; }

.epaper-wrapper {
    display: flex;
    flex-direction: column;
    height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--epaper-light-bg);
    overflow: hidden;
}

/* प्रीमियम हेडर डिजाइन */
.epaper-header {
    height: var(--header-height);
    background: #ffffff;
    border-bottom: 1px solid var(--epaper-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 100;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.epaper-header-left, .epaper-header-center, .epaper-header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.epaper-brand {
    border-left: 3px solid var(--epaper-primary);
    padding-left: 12px;
}

.epaper-title {
    font-size: 18px;
    font-weight: 700;
    margin: 0;
    color: var(--epaper-dark);
}

.epaper-meta {
    font-size: 11px;
    color: #666;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 2px;
}

/* कस्टमाइज्ड कैलेंडर इनपुट स्टाइल */
.epaper-date-input {
    border: 1px solid var(--epaper-border);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: bold;
    color: var(--epaper-dark);
    background-color: #fff;
    cursor: pointer;
}

.epaper-date-input:focus {
    outline: none;
    border-color: var(--epaper-primary);
}

/* टूलबार बटन्स यूटिलिटी */
.epaper-btn {
    background: #fff; border: 1px solid var(--epaper-border);
    padding: 8px 14px; border-radius: 4px; cursor: pointer;
    display: inline-flex; align-items: center; gap: 6px; font-weight: 500;
}

.epaper-btn:hover, .epaper-btn-secondary:hover { background: var(--epaper-light-bg); }

.epaper-btn-secondary {
    background: transparent; border: 1px solid transparent;
    padding: 6px 10px; font-size: 13px; cursor: pointer; color: #555;
}

.epaper-btn-icon {
    background: none; border: none; cursor: pointer; padding: 8px; color: #555;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
}

.epaper-btn-icon:hover { background: var(--epaper-light-bg); color: var(--epaper-primary); }

.epaper-btn-nav {
    background: var(--epaper-primary); color: white; border: none;
    font-size: 20px; width: 32px; height: 32px; border-radius: 50%; cursor: pointer;
}

.epaper-select { padding: 4px 8px; font-size: 14px; border-radius: 4px; border: 1px solid var(--epaper-border); }
.zoom-display { font-size: 13px; font-weight: bold; min-width: 45px; text-align: center; }
.divider { color: var(--epaper-border); }

/* मुख्य स्प्लिट व्यू फ्रेमवर्क */
.epaper-body-container { display: flex; flex: 1; height: calc(100vh - var(--header-height)); overflow: hidden; position: relative; }

/* थंबनेल साइडबार रेंडरर */
.epaper-sidebar {
    width: var(--sidebar-width); background: #ffffff; border-right: 1px solid var(--epaper-border);
    display: flex; flex-direction: column; transition: transform 0.3s ease;
}

.epaper-sidebar.collapsed { transform: translateX(calc(-1 * var(--sidebar-width))); position: absolute; height: 100%; z-index: 90; }
.sidebar-header { padding: 15px; font-weight: bold; background: var(--epaper-light-bg); border-bottom: 1px solid var(--epaper-border); }
.thumbnail-list { flex: 1; overflow-y: auto; padding: 15px; display: flex; flex-direction: column; gap: 15px; }

.thumb-wrapper { border: 2px solid transparent; padding: 4px; cursor: pointer; background: #fff; box-shadow: 0 2px 4px rgba(0,0,0,0.08); text-align: center; }
.thumb-wrapper:hover { box-shadow: 0 4px 8px rgba(0,0,0,0.15); }
.thumb-wrapper.active { border-color: var(--epaper-primary); }
.thumb-wrapper canvas { max-width: 100% !important; height: auto !important; }
.thumb-label { font-size: 12px; margin-top: 4px; display: block; color: #444; }

/* मुख्य कैनवास स्क्रॉलस्पेस */
.epaper-viewer-pane { flex: 1; overflow: hidden; position: relative; display: flex; justify-content: center; align-items: flex-start; }
.canvas-scroll-container { width: 100%; height: 100%; overflow: auto; display: flex; justify-content: center; align-items: flex-start; padding: 20px; cursor: grab; }
.canvas-scroll-container:active { cursor: grabbing; }
#epaper-canvas { background: #ffffff; box-shadow: 0 4px 20px rgba(0,0,0,0.15); transform-origin: top center; }

/* स्पिनर कंपोनेंट */
.epaper-spinner { position: absolute; top:0; left:0; right:0; bottom:0; background: rgba(255,255,255,0.9); display: flex; flex-direction: column; justify-content: center; align-items: center; z-index: 10; }
.spinner { width: 40px; height: 40px; border: 4px solid var(--epaper-border); border-top: 4px solid var(--epaper-primary); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
.no-paper-alert { padding: 40px; text-align: center; font-size: 16px; color: #666; font-weight: 500; background: #fff; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }

.epaper-mobile-footer { display: none; }

/* रिस्पॉन्सिव मीडिया क्वेरी ओवरराइड्स (मोबाइल यूआई) */
@media (max-width: 768px) {
    .lbl-desktop, .epaper-header-right .epaper-btn-secondary, .epaper-header-right .divider, .epaper-header-center { display: none; }
    .epaper-header { padding: 0 10px; }
    .epaper-sidebar { position: absolute; z-index: 999; height: 100%; transform: translateX(-100%); }
    .epaper-sidebar.active-mobile { transform: translateX(0); }

    .epaper-mobile-footer {
        display: flex; height: 60px; background: #ffffff; border-top: 1px solid var(--epaper-border);
        justify-content: space-around; align-items: center; z-index: 101; position: relative;
    }
    .m-footer-item { display: flex; flex-direction: column; align-items: center; background: none; border: none; color: #444; font-size: 11px; cursor: pointer; }
    .m-footer-item .icon { font-size: 18px; margin-bottom: 2px; }
    .status-box { font-weight: bold; font-size: 13px; background: var(--epaper-light-bg); padding: 6px 12px; border-radius: 20px; }
    .m-date-picker-input { border: 1px solid var(--epaper-border); padding: 4px; border-radius: 4px; font-size: 11px; max-width: 95px; font-weight: bold; }
}

/* ऊपर बाईं तरफ वाले तीन लाइन (मेनू बटन) को हटाने के लिए */
#toggle-sidebar-btn {
    display: none !important;
}