======================================
           TOP NAVIGATION PANEL & LANGUAGE DROPDOWN
           ========================================================================= */
                .top-nav-panel {
            width: 100%;
            background-color: #1a4240;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            box-sizing: border-box;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
            position: absolute;
            top: 0;
            left: 0;
            z-index: 500;
        }

        .top-nav-left {
            display: flex;
            align-items: center;
        }

        .top-nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .top-nav-btn {
            background: transparent;
            border: none;
            color: #ffffff;
            font-size: 13.5px;
            font-weight: 700;
            font-family: inherit;
            padding: 4px 8px;
            border-radius: 4px;
            transition: opacity 0.2s;
        }

        .top-nav-btn.disabled {
            cursor: not-allowed !important;
            opacity: 0.75;
        }

        .top-nav-btn.disabled:hover {
            opacity: 0.75;
        }

        /* Language Dropdown Container */
        .lang-dropdown-container {
            position: relative;
            display: inline-block;
        }

        .lang-dropdown-trigger {
            background: transparent;
            border: none;
            color: #ffffff;
            font-size: 13.5px;
            font-weight: 700;
            font-family: inherit;
            display: flex;
            align-items: center;
            gap: 5px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 4px;
            transition: background 0.15s;
        }

        .lang-dropdown-trigger:hover {
            background: rgba(255, 255, 255, 0.18);
        }

        .dropdown-arrow {
            font-size: 10px;
            color: #ffffff;
            margin-left: 2px;
        }

        /* Speech-Bubble / Popover Menu */
        .lang-popover-menu {
            display: none;
            position: absolute;
            top: calc(100% + 8px);
            right: -6px;
            background: #ffffff;
            border-radius: 6px;
            box-shadow: 0 6px 22px rgba(0, 0, 0, 0.18);
            min-width: 125px;
            padding: 5px 0;
            z-index: 9999;
            animation: fadeInPopover 0.15s ease-out;
        }

        .lang-popover-menu.show {
            display: block;
        }

        @keyframes fadeInPopover {
            from { opacity: 0; transform: translateY(-6px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* Popover Top Arrow Pointer */
        .popover-arrow {
            position: absolute;
            top: -6px;
            right: 16px;
            width: 0;
            height: 0;
            border-left: 6px solid transparent;
            border-right: 6px solid transparent;
            border-bottom: 6px solid #ffffff;
        }

        .popover-item {
            display: flex;
            align-items: center;
            justify-content: flex-start;
            padding: 7px 14px;
            cursor: pointer;
            transition: background 0.15s;
            color: #1e293b;
            font-size: 13px;
            font-weight: 600;
        }

        .popover-item:hover {
            background-color: #f1f5f9;
            color: #0f172a;
        }

        .popover-item.active {
            font-weight: 700;
            color: #286b67;
            background-color: #f8fafc;
        }

        .popover-item.disabled {
            cursor: not-allowed;
            opacity: 0.6;
        }

        .popover-item.disabled:hover {
            background-color: transparent;
            color: #1e293b;
        }

        /* Sign In Page & Card */
        #page-signin {
            width: 100%;
            height: 100%;
            background-color: var(--bg-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .signin-wrapper {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.65), rgba(30, 41, 59, 0.75));
            backdrop-filter: blur(6px);
            padding: 20px;
            box-sizing: border-box;
        }

        .signin-card {
            background: #ffffff;
            border-radius: 16px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
            width: 100%;
            max-width: 440px;
            padding: 36px 36px 28px 36px;
            box-sizing: border-box;
            text-align: center;
            position: relative;
            animation: fadeInCard 0.3s ease-out;
        }

        @keyframes fadeInCard {
            from { opacity: 0; transform: translateY(12px) scale(0.98); }
            to { opacity: 1; transform: translateY(0) scale(1); }
        }

        .signin-logo {
            max-width: 220px;
            height: auto;
            margin-bottom: 20px;
            object-fit: contain;
        }

        .signin-title {
            margin: 0 0 6px 0;
            font-size: 22px;
            font-weight: 700;
            color: #0f172a;
        }

        .signin-subtitle {
            margin: 0 0 22px 0;
            font-size: 13px;
            color: #64748b;
            font-weight: 500;
        }

        .signin-form-group {
            text-align: left;
            margin-bottom: 16px;
        }

        .signin-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: #334155;
            margin-bottom: 6px;
        }

        .signin-input {
            width: 100%;
            padding: 11px 14px;
            border: 1.5px solid #cbd5e1;
            border-radius: 8px;
            font-size: 14px;
            color: #0f172a;
            box-sizing: border-box;
            transition: border-color 0.2s, box-shadow 0.2s;
            outline: none;
            font-family: inherit;
        }

        .signin-input:focus {
            border-color: #286b67;
            box-shadow: 0 0 0 3px rgba(40, 107, 103, 0.15);
        }

        .signin-error {
            display: none;
            background: #fef2f2;
            border: 1px solid #fecaca;
            color: #dc2626;
            padding: 10px 12px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
            text-align: left;
        }

        .signin-submit-btn {
            width: 100%;
            padding: 12px;
            background-color: #286b67;
            color: #ffffff;
            border: none;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: background-color 0.2s, transform 0.1s;
            box-shadow: 0 4px 12px rgba(40, 107, 103, 0.3);
            font-family: inherit;
        }

        .signin-submit-btn:hover {
            background-color: #1e524f;
        }

        .signin-submit-btn:active {
            transform: scale(0.99);
        }

        .signin-demo-note {
            margin-top: 18px;
            font-size: 12px;
            color: #64748b;
            background: #f8fafc;
            padding: 8px 12px;
            border-radius: 6px;
            border: 1px dashed #cbd5e1;
        }

        /* Profile Dropdown Styling */
        .profile-dropdown-container {
            position: relative;
            display: inline-block;
        }

        .profile-dropdown-trigger {
            background: transparent;
            border: none;
            color: #ffffff;
            font-size: 13.5px;
            font-weight: 700;
            font-family: inherit;
            display: flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 4px;
            transition: background 0.15s;
        }

        .profile-dropdown-trigger:hover {
            background: rgba(255, 255, 255, 0.18);
        }

        .profile-icon-wrapper {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
        }

        .profile-icon-wrapper svg {
            width: 14px;
            height: 14px;
            fill: #0f172a;
        }

        .card-column {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }

        .get-started-btn {
            background-color: #ffffff;
            color: #000000;
            border: 1px solid var(--border-light);
            border-radius: 4px;
            width: 140px;
            height: 34px;
            font-size: 15px;
            font-weight: bold;
            cursor: pointer;
            transition: background-color 0.2s, border-color 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
        }

        .get-started-btn:hover {
            background-color: #fafafa;
            border-color: #777777;
        }

        /* ===================================

/* Formal Top Navigation Panel - Left & Right Layout */
.top-nav-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    background-color: #16403d;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    width: 100%;
    box-sizing: border-box;
}

.top-nav-left {
    display: flex;
    align-items: center;
}

.top-nav-back-btn {
    background-color: rgba(255, 255, 255, 0.14);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 6px;
    padding: 6px 14px;
    font-family: "Inter", -apple-system, sans-serif;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.15s ease-in-out;
    outline: none;
}

.top-nav-back-btn:hover {
    background-color: #ffffff;
    color: #0f172a;
    border-color: #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}