/* ========================================================
           READER VIEW (DOOM-SCROLL 100% FIT WIDTH, 1:3 ASPECT RATIO)
           ======================================================== */
        #readerView {
            display: none;
            width: 100%;
            min-height: 100vh;
            background-color: #180914;
        }

        .reader-nav {
            position: fixed;
            top: 14px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 9999;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(36, 12, 30, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 0.35rem 0.65rem;
            border-radius: 9999px;
            border: 1px solid var(--primary-border);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 20px var(--accent-glow);
            max-width: calc(100vw - 20px);
            box-sizing: border-box;
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
        }

        .reader-nav.nav-hidden {
            opacity: 0 !important;
            visibility: hidden !important;
            pointer-events: none !important;
            transform: translateX(-50%) translateY(-24px) !important;
        }

        .nav-back-btn {
            background: rgba(255, 255, 255, 0.12);
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.2);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 0.35rem 0.75rem;
            border-radius: 9999px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            transition: all 0.15s ease;
            flex-shrink: 0;
            white-space: nowrap;
        }

        .nav-back-btn:hover {
            background: var(--primary);
            border-color: var(--primary-light);
        }

        .nav-icon-btn {
            background: rgba(255, 255, 255, 0.12);
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.2);
            font-size: 0.82rem;
            font-weight: 700;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all 0.15s ease;
            flex-shrink: 0;
        }

        .nav-icon-btn:hover {
            background: var(--primary);
            border-color: var(--primary-light);
            transform: scale(1.08);
        }

        .nav-title-text {
            font-size: 0.84rem;
            font-weight: 700;
            color: #FFFFFF;
            max-width: 140px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        @media (min-width: 600px) {
            .nav-title-text {
                max-width: 220px;
            }
        }

        .nav-picker-btn {
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #FFFFFF;
            font-size: 0.76rem;
            font-weight: 600;
            padding: 0.35rem 0.75rem;
            border-radius: 9999px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: all 0.15s ease;
            max-width: 320px;
            white-space: nowrap;
        }

        .nav-picker-btn span:first-child {
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .nav-picker-btn:hover, .nav-picker-btn.active {
            background: var(--primary);
        }

        /* COMPACT & LIGHTWEIGHT ARTICLE PICKER DROPDOWN (NO HEAVY THUMBNAILS) */
        .nav-picker-dropdown {
            position: absolute;
            top: calc(100% + 10px);
            left: 50%;
            transform: translateX(-50%) scale(0.96);
            width: 440px;
            max-width: 92vw;
            max-height: 60vh;
            background: rgba(36, 12, 30, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--primary-border);
            border-radius: 16px;
            padding: 0.75rem;
            box-shadow: 0 20px 45px rgba(0,0,0,0.7), 0 0 25px var(--accent-glow);
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
            z-index: 10000;
            overflow: hidden;
        }

        .nav-picker-dropdown.is-open {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transform: translateX(-50%) scale(1);
        }

        .picker-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.25rem 0.5rem 0.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 0.74rem;
            color: #E2E8F0;
            font-weight: 700;
            font-family: var(--font-mono);
            letter-spacing: 0.05em;
        }

        .picker-list {
            overflow-y: auto;
            max-height: calc(60vh - 60px);
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
            padding-right: 4px;
            scrollbar-width: thin;
        }

        .picker-item {
            display: flex;
            align-items: flex-start;
            gap: 0.65rem;
            padding: 0.55rem 0.75rem;
            border-radius: 8px;
            color: #CBD5E1;
            font-size: 0.82rem;
            cursor: pointer;
            transition: all 0.15s ease;
            text-align: left;
            user-select: none;
        }

        .picker-item-num {
            font-family: var(--font-mono);
            font-size: 0.75rem;
            font-weight: 700;
            opacity: 0.75;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .picker-item-content {
            min-width: 0;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .picker-item-title {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            font-weight: 600;
            color: #F8FAFC;
        }

        .picker-item-sub {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            font-size: 0.72rem;
            color: #94A3B8;
            line-height: 1.25;
        }

        .picker-item:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #FFFFFF;
        }

        .picker-item:hover .picker-item-title {
            color: #FFFFFF;
        }

        .picker-item:hover .picker-item-sub {
            color: #E2E8F0;
        }

        .picker-item.active {
            background: var(--primary);
            color: #FFFFFF;
            font-weight: 700;
            box-shadow: 0 2px 10px var(--accent-glow);
        }

        .picker-item.active .picker-item-title {
            color: #FFFFFF;
        }

        .picker-item.active .picker-item-sub {
            color: rgba(255, 255, 255, 0.9);
        }