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

/* =========================
BODY
========================= */
body{
    background:#f8fafc;
    color:#0f172a;
    font-family:'Inter', sans-serif;
    overflow-x:hidden;
}

/* =========================
HEADER
========================= */
header{
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;

    padding:20px;
    background:#ffffff;
    border-bottom:1px solid #e2e8f0;
}

header h1{
    font-size:28px;
    font-weight:600;
}

.flow{ color:#f59e0b; }
.two{ color:#a855f7; }
.code{ color:#22c55e; }

header p{
    font-size:14px;
    color:#64748b;
}

/* =========================
MAIN FLEX LAYOUT
========================= */
main{
    max-width:1200px;
    margin:auto;
    padding:30px 15px;

    display:flex;
    flex-direction:column;
    gap:30px;
}

/* =========================
SECTION CARD
========================= */
section{
    width:100%;
    max-width:100%;
    overflow:hidden;

    background:#ffffff;
    border-radius:12px;
    padding:20px;

    display:flex;
    flex-direction:column;
    gap:15px;

    border:1px solid #e2e8f0;
    transition:0.3s;
}

section:hover{
    box-shadow:0 10px 25px rgba(0,0,0,0.06);
}

/* prevent child overflow */
section *{
    max-width:100%;
    box-sizing:border-box;
}

/* =========================
TITLE
========================= */
h2{
    font-size:18px;
    font-weight:600;
    color:#0ea5e9;
}

/* =========================
🔥 DOUBLE SCROLL TRACER
========================= */

/* OUTER BOX */
.codecheck_tracer{
    width:100%;
    max-width:850px;
    margin:auto;

    background:#f1f5f9;
    border-radius:10px;
    border:1px solid #e2e8f0;

    padding:10px;

    overflow-x:auto;   /* first scroll */
    overflow-y:hidden;

    text-align:left;
}

/* INNER WRAPPER */
.codecheck_tracer > div{
    width:max-content;
    min-width:700px;  /* 🔥 discipline width */

    overflow-x:auto;  /* second scroll */
}

/* =========================
TRACE ELEMENT FIX
========================= */
.codecheck_tracer canvas,
.codecheck_tracer svg{
    display:block;
    max-width:none !important;
}

/* =========================
CODE BLOCK FIX
========================= */
.codecheck_tracer pre{
    min-width:600px;
    white-space:pre;
    font-size:14px;
    color:#0f172a;
}

/* =========================
🔥 START BUTTON FIX
========================= */
.codecheck_tracer button{
    max-width:100%;
    width:auto;

    display:inline-block;
    margin:10px auto;

    white-space:normal;
    word-break:break-word;

    padding:8px 14px;
    border-radius:8px;

    background:#0ea5e9;
    color:#fff;
    border:none;

    cursor:pointer;
    transition:0.3s;
}

.codecheck_tracer button:hover{
    background:#0284c7;
}

/* =========================
FOOTER
========================= */
footer{
    text-align:center;
    padding:20px;
    font-size:13px;
    color:#64748b;
    border-top:1px solid #e2e8f0;
    background:#ffffff;
}

/* =========================
SCROLLBAR (DUAL)
========================= */
.codecheck_tracer::-webkit-scrollbar,
.codecheck_tracer > div::-webkit-scrollbar{
    height:6px;
}

.codecheck_tracer::-webkit-scrollbar-thumb,
.codecheck_tracer > div::-webkit-scrollbar-thumb{
    background:#94a3b8;
    border-radius:10px;
}

/* =========================
MOBILE FIX
========================= */
@media(max-width:768px){

    body{
        overflow-x:hidden;
    }

    main{
        padding:20px 10px;
    }

    header h1{
        font-size:22px;
    }

    section{
        padding:15px;
    }

    .codecheck_tracer{
        max-width:100%;
        padding:8px;
    }

    .codecheck_tracer > div{
        min-width:600px; /* tighter mobile */
    }

}