* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background: #f4f6fa;
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', sans-serif;
            line-height: 1.5;
            color: #1e293b;
        }

        /* main hub container */
        .hub-app {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        /* ========== HEADER ========== */
        .hub-header {
            background: #ffffff;
            border-bottom: 1px solid #e9edf2;
            position: sticky;
            top: 0;
            z-index: 10;
            backdrop-filter: blur(0px);
            box-shadow: 0 1px 2px rgba(0,0,0,0.02);
        }

        .header-inner {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0.9rem 2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
        }

        /* logo area (spot for logo) */
        .logo-area {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            cursor: pointer;
            transition: opacity 0.2s;
        }
        .logo-area:hover {
            opacity: 0.85;
        }
        .logo-placeholder {
            display: flex;
            align-items: center;
            gap: 10px;
            background: transparent;
        }
        .logo-svg {
            width: 38px;
            height: 38px;
            display: block;
        }
        .logo-text {
            font-weight: 600;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
            color: #0f2b2d;
        }
        .logo-text span {
            font-weight: 500;
            color: #2c7a4d;
        }
        .header-title {
            display: flex;
            align-items: baseline;
            gap: 0.65rem;
            flex-wrap: wrap;
        }
        .header-title h1 {
            font-size: 1.6rem;
            font-weight: 600;
            letter-spacing: -0.3px;
            background: linear-gradient(135deg, #1e4620, #2c7a4d);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
        }
        .badge {
            background: #eef2ff;
            color: #2c5f2d;
            font-size: 0.7rem;
            font-weight: 500;
            padding: 0.2rem 0.65rem;
            border-radius: 30px;
            letter-spacing: 0.2px;
        }
        .header-profile {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .greeting {
            font-size: 0.9rem;
            font-weight: 450;
            color: #475569;
            background: #f1f5f9;
            padding: 0.3rem 1rem;
            border-radius: 40px;
        }

        /* main content */
        .hub-main {
            flex: 1;
            max-width: 1280px;
            margin: 0 auto;
            padding: 2rem 2rem 1rem;
            width: 100%;
        }

        /* hero section */
        .hero-section {
            margin-bottom: 2.5rem;
        }
        .hero-text h2 {
            font-size: 1.8rem;
            font-weight: 600;
            color: #0f172a;
            letter-spacing: -0.2px;
        }
        .hero-text p {
            font-size: 1rem;
            color: #475569;
            margin-top: 0.5rem;
        }

        /* section headers */
        .section-header {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            flex-wrap: wrap;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid #e2e8f0;
            padding-bottom: 0.6rem;
        }
        .section-header h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #0f172a;
        }
        .tools-count, .expand-badge {
            font-size: 0.75rem;
            background: #eef2ff;
            padding: 0.2rem 0.8rem;
            border-radius: 30px;
            color: #2d6a4f;
            font-weight: 500;
        }

        /* Tools Grid = 4 email template makers */
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.6rem;
            margin-bottom: 3rem;
        }

        .tool-card {
            background: #ffffff;
            border-radius: 20px;
            padding: 1.5rem;
            transition: all 0.2s ease;
            border: 1px solid #eef2f6;
            box-shadow: 0 1px 3px rgba(0,0,0,0.02);
            display: flex;
            flex-direction: column;
        }
        .tool-card:hover {
            transform: translateY(-3px);
            border-color: #cbdde6;
            box-shadow: 0 12px 20px -12px rgba(0, 0, 0, 0.08);
        }
        .tool-icon {
            margin-bottom: 1rem;
        }
        .icon-bg {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 18px;
            background: #f0f9f4;
            color: #2c7a4d;
        }
        .email-icon-1, .email-icon-2, .email-icon-3, .email-icon-4 {
            background: #eef6ef;
            color: #236b48;
        }
        .tool-info h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 0.4rem;
            color: #0f172a;
        }
        .tool-info p {
            font-size: 0.85rem;
            color: #5b6e8c;
            line-height: 1.4;
            margin-bottom: 1.2rem;
        }
        .tool-link {
            margin-top: auto;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.9rem;
            color: #2c7a4d;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: gap 0.2s;
        }
        .tool-link:hover {
            gap: 0.5rem;
            color: #1a5a3a;
            text-decoration: underline;
        }

        /* extra section (photo upload + future) */
        .extra-section {
            margin: 2rem 0 1.5rem;
        }
        .extra-cards {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-top: 1rem;
        }
        .upload-card {
            background: #ffffff;
            border-radius: 20px;
            padding: 1.5rem;
            flex: 2;
            min-width: 260px;
            border: 1px solid #eef2f6;
            display: flex;
            flex-direction: column;
            transition: box-shadow 0.2s;
        }
        .upload-icon {
            background: #eef2ff;
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 20px;
            color: #2d6a4f;
            margin-bottom: 1rem;
        }
        .upload-text h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
        }
        .upload-text p {
            color: #5b6e8c;
            font-size: 0.85rem;
            margin-bottom: 1rem;
        }
        .upload-link {
            text-decoration: none;
            font-weight: 500;
            color: #2c7a4d;
            align-self: flex-start;
            margin-top: 0.4rem;
            font-size: 0.9rem;
            border-bottom: 1px dashed #b9d8c1;
        }
        .upload-link:hover {
            color: #1a5a3a;
            border-bottom-style: solid;
        }
        .coming-soon-note {
            font-size: 0.7rem;
            color: #8196b0;
            margin-top: 0.7rem;
            background: #f8fafc;
            display: inline-block;
            padding: 0.2rem 0.6rem;
            border-radius: 40px;
            align-self: flex-start;
        }
        .future-tool {
            background: #f9fbfd;
            border: 1px dashed #ccdbe8;
            border-radius: 20px;
            padding: 1.5rem;
            flex: 1;
            min-width: 200px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            transition: background 0.2s;
            cursor: pointer;
        }
        .future-tool:hover {
            background: #f1f5f9;
            border-color: #b9cfdd;
        }
        .future-icon {
            color: #5f7f6b;
            margin-bottom: 0.8rem;
        }
        .future-tool h4 {
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 0.2rem;
        }
        .future-tool p {
            font-size: 0.75rem;
            color: #6f7f94;
        }

        /* footer */
        .hub-footer {
            margin-top: 3rem;
            border-top: 1px solid #e2e8f0;
            padding: 1.2rem 0;
            text-align: center;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.8rem;
            font-size: 0.75rem;
            color: #5b6e8c;
        }
        .footer-links a {
            text-decoration: none;
            color: #2c7a4d;
            margin-left: 1rem;
        }
        .footer-links a:hover {
            text-decoration: underline;
        }

        /* stub toast notification (clean modern) */
        .stub-toast {
            position: fixed;
            bottom: 28px;
            left: 50%;
            transform: translateX(-50%);
            background: #1e293b;
            color: white;
            padding: 0.7rem 1.5rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            z-index: 1000;
            box-shadow: 0 8px 20px rgba(0,0,0,0.12);
            backdrop-filter: blur(4px);
            background: #0f172ae6;
            font-family: system-ui, sans-serif;
            pointer-events: none;
            animation: toastFadeIn 0.2s ease;
        }
        .stub-toast-fadeout {
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        @keyframes toastFadeIn {
            from { opacity: 0; bottom: 10px; }
            to { opacity: 1; bottom: 28px; }
        }

        /* responsive adjustments */
        @media (max-width: 720px) {
            .header-inner {
                padding: 0.8rem 1.2rem;
            }
            .hub-main {
                padding: 1.5rem 1.2rem;
            }
            .header-title h1 {
                font-size: 1.3rem;
            }
            .logo-text {
                font-size: 1.1rem;
            }
            .tools-grid {
                gap: 1rem;
            }
        }
        /* remove any avatars — we excluded all avatar icons / profile images */
        .avatar-icon {
            display: none;
        }
        /* ensure no avatar appears anywhere */
        .header-profile .avatar-icon {
            display: none;
        }