@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;800&family=JetBrains+Mono:wght@500&display=swap');

        :root {
            --bg: #09090b;
            --surface: #18181b;
            --primary: #3b82f6;
            --primary-glow: rgba(59, 130, 246, 0.5);
            --border: #27272a;
            --text-high: #fafafa;
            --text-low: #a1a1aa;
        }

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

        body {
            font-family: 'Plus Jakarta Sans', sans-serif;
            background-color: var(--bg);
            color: var(--text-high);
            padding: 40px 20px;
            line-height: 1.6;
        }

        .app-container {
            max-width: 1100px;
            margin: 0 auto;
        }

        /* --- UI HEADER --- */
        .h1_tage_header {
            text-align: center;
            margin-bottom: 50px;
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(to bottom right, #fff, #71717a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* --- INSTRUCTIONS BOX --- */
        .instruction-card {
            background: rgba(59, 130, 246, 0.05);
            border: 1px dashed var(--primary);
            border-radius: 16px;
            padding: 20px;
            margin-bottom: 40px;
            display: flex;
            gap: 15px;
            align-items: flex-start;
        }

        .instruction-card span { font-size: 1.5rem; }
        .instruction-card p { font-size: 0.9rem; color: var(--text-low); }
        .instruction-card strong { color: var(--primary); }

        /* --- MODERN FORM DESIGN --- */
        form {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 40px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.4);
        }

        .form-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            margin-bottom: 30px;
        }

        .input-box { display: flex; flex-direction: column; gap: 8px; }
        .input-box label { font-size: 0.8rem; font-weight: 600; color: var(--text-low); text-transform: uppercase; }

        input {
            background: #09090b;
            border: 1px solid var(--border);
            padding: 14px 18px;
            border-radius: 12px;
            color: white;
            font-size: 1rem;
            transition: all 0.3s;
        }

        input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px var(--primary-glow);
        }

        .submit-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 16px;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    width: 30%;
    font-size: 1rem;
    transition: 0.3s;

    display: block;
    margin: 0 auto;   /* CENTER BUTTON */
}

.submit-btn:hover {
    background: #2563eb;
    transform: translateY(-2px);
}


        /* --- OUTPUT SECTION --- */
        #buttons_div { margin-top: 60px; display: none; }

        .toolbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
        }

        .tool-btns { display: flex; gap: 12px; }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-high);
            padding: 8px 16px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 0.85rem;
            font-weight: 600;
            transition: 0.2s;
        }

        .btn-outline:hover { background: var(--border); }

        /* --- TABLE DESIGN --- */
        .results-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 30px;
        }

        .table-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
        }

        .table-header {
            background: var(--primary);
            padding: 15px;
            text-align: center;
            font-weight: 800;
            font-size: 1.1rem;
        }

        .table-sub-header {
            display: grid;
            grid-template-columns: 1fr 1fr;
            background: #27272a;
            padding: 8px;
            font-size: 0.75rem;
            text-transform: uppercase;
            text-align: center;
            color: var(--text-low);
        }

        .table-body { padding: 10px; font-family: 'JetBrains Mono', monospace; }

        .table-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            padding: 8px 0;
            border-bottom: 1px solid #27272a;
            text-align: center;
            font-size: 0.95rem;
        }

        .table-row:last-child { border: none; }
        .table-row span:last-child { color: var(--primary); font-weight: 600; }

      

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .form-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    button {
        width: 100%;
        padding: 12px;
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
    }

    .toolbar {
        flex-direction: column;
        gap: 20px;
    }

    .toolbar button {
        width: 100%;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .toolbar {
        flex-wrap: wrap;
        gap: 16px;
    }

    button {
        padding: 12px 18px;
    }
}

@media (min-width: 1025px) and (max-width: 1366px) {
    .form-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .toolbar {
        gap: 16px;
    }
}

@media (min-width: 1367px) {
    .form-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .toolbar {
        justify-content: space-between;
    }
}

@media (min-width: 1920px) {
    .container {
        max-width: 1800px;
        margin: auto;
    }

    .form-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}