:root {
            --primary: #6366f1;
            --primary-soft: rgba(99, 102, 241, 0.1);
            --bg-body: #f8fafc;
            --sidebar-bg: #ffffff;
            --card-bg: #ffffff;
            --text-main: #0f172a;
            --border-color: #e2e8f0;
            --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        [data-bs-theme="dark"] {
            --bg-body: #0b0f1a;
            --sidebar-bg: #111827;
            --card-bg: #111827;
            --text-main: #f1f5f9;
            --border-color: #1e293b;
        }

        body { 
            font-family: 'Plus Jakarta Sans', 'Hind Siliguri', sans-serif; 
            background-color: var(--bg-body); 
            color: var(--text-main);
            transition: var(--transition);
            min-height: 100vh;
            display: flex; flex-direction: column;
        }

        /* Sidebar */
        .sidebar { 
            background: var(--sidebar-bg); height: 100vh; position: fixed;
            left: 0; top: 0; width: 260px; padding: 100px 15px 30px;
            transition: var(--transition); z-index: 1040;
            border-right: 1px solid var(--border-color);
            display: flex; flex-direction: column;
        }

        .sidebar-link {
            display: flex; align-items: center; gap: 12px; padding: 14px;
            border-radius: 14px; color: #64748b; text-decoration: none;
            margin-bottom: 8px; font-weight: 600; transition: 0.2s;
            position: relative; cursor: pointer;
        }

        .sidebar-link:hover, .sidebar-link.active {
            background: var(--primary-soft); color: var(--primary);
        }

        @media (min-width: 993px) {
            body.sidebar-collapsed .sidebar { width: 85px; padding: 100px 10px; }
            body.sidebar-collapsed .sidebar-link span { display: none; }
            body.sidebar-collapsed .sidebar-link { justify-content: center; width: 50px; height: 50px; margin: 12px auto; }
            
            body.sidebar-collapsed .sidebar-link::after {
                content: attr(data-title);
                position: absolute; left: 70px; top: 50%;
                transform: translateY(-50%) translateX(10px);
                background: #0f172a; color: #fff;
                padding: 8px 15px; border-radius: 10px; font-size: 13px;
                opacity: 0; visibility: hidden; transition: 0.3s;
                white-space: nowrap; pointer-events: none; z-index: 9999;
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
            }
            body.sidebar-collapsed .sidebar-link:hover::after {
                opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0);
            }
            body.sidebar-collapsed .wrapper, body.sidebar-collapsed .admin-footer { margin-left: 85px; }
        }

        .top-nav {
            background: rgba(255,255,255,0.8); backdrop-filter: blur(15px);
            border-bottom: 1px solid var(--border-color); padding: 20px 30px;
            position: sticky; top: 0; z-index: 1050;
        }
        [data-bs-theme="dark"] .top-nav { background: rgba(17, 24, 39, 0.8); }

        .wrapper { margin-left: 260px; padding: 23px; transition: var(--transition); flex: 1; }
        
        .premium-card {
            background: var(--card-bg); border-radius: 32px; padding: 33px;
            border: 1px solid var(--border-color); box-shadow: 0 20px 60px rgba(0,0,0,0.03);
        }
        
                /* ১. স্লিম হেডার বর্ডার ও র্যাপার */
        .header-slim-border {
            border-bottom: 1px solid rgba(0, 0, 0, 0.08) !important;
            position: relative;
            width: 100%;
        }
        
        [data-bs-theme="dark"] .header-slim-border {
            border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
        }
        
        /* ২. টাইটেল ও আইকন স্টাইল */
        .gradient-text-primary {
            background: linear-gradient(45deg, #0d6efd, #0dcaf0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 900;
        }
        
        .icon-box-sm {
            background: linear-gradient(135deg, #0d6efd 0%, #0b5ed7 100%);
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(13, 110, 253, 0.25);
        }
        
        .badge-mini {
            background: rgba(13, 110, 253, 0.1);
            color: #0d6efd;
            font-size: 9px;
            padding: 1px 7px;
            border-radius: 5px;
            font-weight: 800;
        }
        
        .extra-small { font-size: 9px; letter-spacing: 0.5px; opacity: 0.7; }
        
        /* ৩. কম্প্যাক্ট প্রোভাইডার ব্যাজ */
        .provider-badge-slim {
            display: inline-flex;
            align-items: center;
            background: var(--bs-tertiary-bg);
            padding: 5px 15px;
            border-radius: 10px;
            border: 1px solid rgba(0,0,0,0.05);
        }
        
        .label-mini {
            font-size: 8px;
            font-weight: 800;
            color: #64748b;
            margin-bottom: -3px;
            text-transform: uppercase;
            text-align:center;
        }
        
        .provider-name {
            font-size: 13px;
            font-weight: 800;
            color: var(--bs-primary);
        }
        
        /* ৪. ডটের ফ্ল্যাশ বা পিং অ্যানিমেশন */
        .status-dot-wrapper {
            position: relative;
            width: 8px;
            height: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .status-dot {
            width: 8px;
            height: 8px;
            background-color: #10b981;
            border-radius: 50%;
            position: relative;
            z-index: 2;
        }
        
        .status-ping {
            position: absolute;
            width: 100%;
            height: 100%;
            background-color: #10b981;
            border-radius: 50%;
            z-index: 1;
            animation: ping-flash 1.8s cubic-bezier(0, 0, 0.2, 1) infinite;
        }
        
        @keyframes ping-flash {
            0% { transform: scale(1); opacity: 0.8; }
            80%, 100% { transform: scale(3.5); opacity: 0; }
        }
        
        /* ৫. লোডিং ট্রানজিশন ফিক্স (FOUC বন্ধ করতে) */
        .is-collapsed .sidebar, 
        .is-collapsed .wrapper {
            transition: none !important;
        }
        
        /* মোবাইল রেসপন্সিভ ফিক্স */
    @media (max-width: 767.98px) {
        .header-slim-border {
            padding-bottom: 1.5rem !important; /* মোবাইলে একটু বেশি প্যাডিং */
        }
        
        .provider-badge-slim {
            width: 100%; /* মোবাইলে বাটনটি পুরো চওড়া হতে পারে বা বামে সুন্দর করে বসবে */
            justify-content: flex-start;
            padding: 8px 15px;
        }
        
        .icon-box-sm {
            width: 36px; /* মোবাইলে আইকন বক্স একটু ছোট */
            height: 36px;
        }
    
        .gradient-text-primary {
            font-size: 1.25rem; /* মোবাইলে টাইটেল একটু ছোট */
        }
    }


        .form-select-lg {
            border: 2px solid var(--border-color); background: var(--bg-body);
            border-radius: 18px; padding: 11px 20px; color: var(--text-main);
            appearance: none; background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%236366f1' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
            background-repeat: no-repeat; background-position: right 1.25rem center; background-size: 16px 12px;
        }

        .ai-input-box {
            border: 2px solid var(--border-color); background: var(--bg-body);
            border-radius: 22px; padding: 25px; color: var(--text-main);
            transition: var(--transition); resize: none; width: 100%;
        }

        .btn-generate {
            background: linear-gradient(135deg, #6366f1, #4f46e5); color: white;
            border: none; padding: 18px; border-radius: 18px; font-weight: 700; width: 100%;
            display: flex; align-items: center; justify-content: center; gap: 10px;
            box-shadow: 0 10px 25px rgba(99, 102, 241, 0.4); transition: 0.3s;
        }
        .btn-generate:hover:not(:disabled) { 
            transform: translateY(-3px); 
            box-shadow: 0 15px 30px rgba(99, 102, 241, 0.5); 
            color: white; 
        }
        .btn-generate:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }

        .btn-push-premium {
            background: linear-gradient(135deg, #10b981, #059669); color: white;
            border: none; padding: 9px 13px; border-radius: 7px; font-weight: 700;
            display: inline-flex; align-items: center; gap: 8px; transition: 0.3s;
            box-shadow: 0 8px 20px rgba(16, 185, 129, 0.2);
        }
        .btn-push-premium:hover:not(:disabled) { 
            transform: scale(1.05); 
            color: white; 
            box-shadow: 0 12px 25px rgba(16, 185, 129, 0.3); 
        }
        .btn-push-premium:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }

        .preview-pane {
            background: var(--bg-body); border-radius: 24px; padding: 30px;
            border: 2px dashed var(--border-color); min-height: 440px;
            max-height: 600px;
            overflow-y: auto;
        }

        .preview-pane::-webkit-scrollbar {
            width: 8px;
        }
        .preview-pane::-webkit-scrollbar-track {
            background: var(--bg-body);
        }
        .preview-pane::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
        }

        .loader {
            border: 3px solid var(--border-color);
            border-top: 3px solid var(--primary);
            border-radius: 50%;
            width: 40px;
            height: 40px;
            animation: spin 1s linear infinite;
            margin: 0 auto;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .admin-footer {
            margin-left: 260px; padding: 20px 40px; background: var(--card-bg);
            border-top: 1px solid var(--border-color); transition: var(--transition);
            font-size: 13px; font-weight: 600; color: #64748b;
        }

        .modal-content { border-radius: 30px; border: none; overflow: hidden; }
        .config-input { 
            border: 2px solid var(--border-color); 
            border-radius: 14px; 
            padding: 12px 18px; 
            margin-bottom: 12px; 
            width: 100%; 
            background: var(--bg-body);
            color: var(--text-main);
        }

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 700;
        }
        .status-badge.success {
            background: rgba(16, 185, 129, 0.1);
            color: #10b981;
        }
        .status-badge.warning {
            background: rgba(251, 191, 36, 0.1);
            color: #fbbf24;
        }

        .api-provider-card {
            border: 2px solid var(--border-color);
            border-radius: 16px;
            padding: 20px;
            transition: 0.3s;
            cursor: pointer;
            background: var(--bg-body);
        }
        .api-provider-card:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .api-provider-card.active {
            border-color: var(--primary);
            background: var(--primary-soft);
        }
        .api-provider-card .provider-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 12px;
        }

        @media (max-width: 992px) {
            .sidebar { left: -280px; }
            .sidebar.active { left: 0; }
            .wrapper, .admin-footer { margin-left: 0; padding: 20px; }
        }