:root {
    --bg: #ffffff;
    --text: #1a1a1a;
    --line: #1a1a1a; 
    --accent: #000000;
}

/* 1. FORCE FONT CONSISTENCY EVERYWHERE */
*, *::before, *::after {
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif !important;
}

body {
    background: var(--bg);
    color: var(--text);
    display: flex;
    justify-content: center;
    padding: 80px 20px;
    margin: 0;
    -webkit-font-smoothing: antialiased; /* Smoother rendering on Mac */
}

.app-container {
    width: 100%;
    max-width: 900px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.3rem;
    font-weight: 500;
    margin-bottom: 40px;
    opacity: 0.3;
    text-align: center;
}
/* Minimalist Random Button Alignment */
.btn-field {
    display: flex;
    align-items: flex-end; /* Aligns the button with the bottom of the input boxes */
}

/* Button Styling */
.minimal-btn {
    background: transparent;
    border: 1px solid #ddd;
    border-radius: 6px;
    color: #666;
    padding: 0 14px;
    height: 34px; /* Adjust this to perfectly match your input field heights */
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}
#termCount{
    margin-top: 20px;
    margin-bottom: 0;
}
/* Hover and Click States */
.minimal-btn:hover {
    background: #f8f9fa;
    color: #111;
    border-color: #bbb;
}

.minimal-btn:active {
    transform: scale(0.95);
}
/* INPUTS */
.input-group { 
    display: flex; 
    gap: 80px; 
    margin-bottom: 100px; 
    align-items: center;
}

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

label { 
    font-size: 0.6rem; 
    font-weight: 700; 
    opacity: 0.4; 
    text-transform: uppercase; 
    letter-spacing: 0.15rem;
}

input { 
    border: none; 
    border-bottom: 1px solid #eee; 
    font-size: 2.2rem; 
    width: 140px; 
    text-align: center; 
    outline: none; 
    font-weight: 300; /* Match the fraction numbers */
    color: var(--accent);
    background: transparent;
    transition: all 0.3s ease;
}

input:focus { 
    border-bottom-color: var(--accent);
    transform: translateY(-2px);
}

/* FRACTION GRAPHIC */
#fractionDisplay {
    display: inline-block;
}

.fraction-grid {
    display: inline-grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    align-items: start;
}

.a-plus-cell {
    grid-column: 1;
    grid-row: 2;
    padding-right: 18px;
    font-size: 1.8rem;
    font-weight: 200; 
    /* Precise alignment for Inter font */
    transform: translateY(-56%); 
    white-space: nowrap;
    color: var(--text);
    min-width: 60px;
    text-align: right;
}

.numerator-cell {
    grid-column: 2;
    grid-row: 1;
    text-align: center;
    padding: 0 25px 12px 25px;
    font-size: 1.6rem;
    font-weight: 300; /* Matching input weight */
}

.denominator-cell {
    grid-column: 2;
    grid-row: 2;
    border-top: 1px solid var(--text);
    padding-top: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.terminal-dots {
    display: block; /* Switched from flex to block for better text alignment */
    text-align: center;
    padding: 20px 0;
    font-size: 1.5rem; /* Slightly larger so they match the visual weight better */
    letter-spacing: 12px;
    opacity: 0.7; /* Increased from 0.15 for much better visibility */
    
    /* The Magic Fix for horizontal alignment: */
    /* This pushes the text slightly right to balance the letter-spacing on the right */
    text-indent: 12px; 
    margin-top: -12px;
}

footer {
    margin-top: 100px;
    padding-bottom: 50px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.decimal-display {
    font-family: 'JetBrains Mono', 'Courier New', monospace !important;
    font-size: 1.1rem;
    font-weight: 300;
    color: var(--text);
    opacity: 0.5; /* Keeps it subtle */
    letter-spacing: 2px;
}

/* Optional: Add a subtle fade-in for the result */
#decimalValue {
    transition: opacity 0.2s ease;
}

.equation-wrapper {
    display: flex;
    align-items: center; /* Centers the = and formula vertically against the fraction */
    justify-content: center;
    gap: 40px;
    min-height: 300px;
}

.exact-container {
    display: flex;
    align-items: center;
    gap: 40px;
    transition: all 0.5s ease;
    /* Removed margin-top and column direction */
}

.equals-sign {
    font-size: 2.5rem;
    font-weight: 200;
    opacity: 0.2;
}

.exact-formula {
    font-family: 'Inter', sans-serif;
    font-size: 1.8rem; /* Increased to match .a-plus-cell size */
    font-weight: 200;
    width: max-content;
}

/* Hide the 'Exact Value' label or keep it very subtle above the formula */
.exact-label {
    display: none; /* Removed to keep the equation clean */
}

.fraction-line-wrapper {
    display: inline-flex;
    flex-direction: column;
    align-items: center; /* This centers the num and den relative to each other */
    vertical-align: middle;
}

.num {
    /* Remove the fixed 15px side padding if it's causing unevenness */
    padding: 0 5px 5px 5px; 
    border-bottom: 1px solid var(--text);
   text-align: center;
    width: 100%; /* Ensures the border-bottom spans the full width of the content */
}
sub {
    font-size: 0.6em;
    vertical-align: sub;
    line-height: 0; /* Prevents the subscript from adding height to the line */
}

/* Optional: Make the Bessel 'I' look more mathematical */
i {
    font-family: "Times New Roman", serif;
    padding-right: 1px;
}
.den {
    padding-top: 5px;
    text-align: center;
    width: 100%;
}
/* Container to group the SVG parens and the fraction */
.paren-group {
    display: inline-flex;
    align-items: stretch; /* Forces the SVGs to stretch exactly to the fraction's height */
    margin-left: 4px;
}

/* The SVG parentheses */
.paren-svg {
    width: 7px; /* Fixed width so they stay thin */
    flex-shrink: 0;
}

/* Wrapper for the fraction */
.paren-content {
    display: flex;
    align-items: center;
    /* This padding gives the fraction breathing room so the parentheses are slightly taller than the fraction itself */
    padding: 4px 2px; 
}
.subtitle {
    font-size: 0.85em;
    color: #888; /* Soft, muted gray */
    margin-top: -10px; /* Pulls it up closer to the h1 */
    margin-bottom: 64px; /* Gives breathing room before the inputs */
    font-weight: 300;
    letter-spacing: 0.5px;
    text-align: center; /* Assuming your header text is centered */
}

/* Optional: Make the "n" look a bit more mathematical */
.subtitle i {
    font-family: serif;
    font-size: 1.1em;
}
/* Custom Square Root Styling */
.sqrt-tick {
    width: 12px;
    height: 1.5em; /* Slightly taller to ensure the 'tick' clears the number */
    flex-shrink: 0;
    margin-right: -1px; /* Tiny overlap to prevent a white gap */
    /* This ensures the 2px stroke doesn't scale with the SVG size */
    vector-effect: non-scaling-stroke; 
    shape-rendering: geometricPrecision;
}
.math-row {
    display: flex;
    align-items: center;
    justify-content: center;
}
.radicand {
    /* Use an integer (2px) to match the SVG stroke-width exactly */
    border-top: 1px solid var(--text); 
    padding: 2px 4px 0 2px;
    font-weight: 300;
    line-height: 1.1;
    display: inline-block;
}

.sqrt-wrapper {
    display: inline-flex;
    align-items: flex-start; /* Keeps the top of the tick and the line perfectly flush */
    transform: translateY(2px); /* Nudges the whole radical down to align with the '+' */
}


.exact-integer {
    font-size: 2.2rem;
    font-weight: 200;
    padding-left: 10px;
}


.view-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* The switch container */
.switch {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 20px;
}

.switch input { opacity: 0; width: 0; height: 0; }

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 20px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 14px; width: 14px;
    left: 3px; bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider { background-color: #2196F3; }
input:checked + .slider:before { transform: translateX(20px); }

#toggleLabel { font-size: 0.9rem; color: #888; }

/* Styling the substituted term count */
.n-val {
    color: #3182ce; /* Vibrant blue */
    font-family: 'Courier New', Courier, monospace; /* Makes numbers look "calculated" */
}

/* Ensure the fraction cells don't collapse with the new spans */
.a-plus-cell, .numerator-cell {
    white-space: nowrap;
}

/* Typography & Alignments */
.math-serif { font-family: serif; }
.flex-row { display: flex; align-items: center; }
.inline-flex-row { display: inline-flex; align-items: center; }

/* Spacing Utilities */
.gap-2 { gap: 2px; }
.gap-4 { gap: 4px; }
.gap-6 { gap: 6px; }
.gap-8 { gap: 8px; }
.pr-2 { padding-right: 2px; }
.pt-1 { padding-top: 1px; }
.ml-1 { margin-left: 1px; }

/* Fraction & Math Scaling */
.text-sm { font-size: 0.7em; }
.scale-80 { transform: scale(0.8); }
.inner-num { padding: 0 2px; border-bottom: 1px solid currentColor; }
.sup-adjust { align-self: flex-start; margin-top: 2px; margin-left: 2px; font-size: 0.85em; }

/* Square Root Utilities */
.relative { position: relative; }
.sqrt-index { position: absolute; font-size: 0.5em; top: -2px; left: -1px; }

/* Additional Spacing & Flex */
.flex { display: flex; }
.ml-2 { margin-left: 2px; }

/* Transforms */
.translate-y-half { transform: translateY(-0.5em); }

/* Custom Alignments & Margins */
.mb-20 { margin-bottom: 20px; }
.ml-n2 { margin-left: -2px; }

/* Font Scaling & Positioning */
.text-85 { font-size: 0.85em; }
.cube-root-idx { font-size: 0.6em; position: absolute; left: -4px; top: 2px; }
/* Flex Alignments */
.justify-center { justify-content: center; }
/* Flex Direction & Alignments */
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }

/* Padding Utilities */
.px-2 { padding: 0 2px; }
.px-4 { padding: 0 4px; }

/* Structural */
.fraction-line { height: 1px; width: 100%; background: currentColor; }

/* Font Sizes & Specific Spacing */
.text-12 { font-size: 1.2em; }
.text-11 { font-size: 1.1em; }
.text-07 { font-size: 0.7em; }
.lh-0 { line-height: 0; }
.mb-25 { margin-bottom: 25px; }
.ml-2 { margin-left: 2px; }

/* --- MOBILE RESPONSIVENESS --- */
@media (max-width: 768px) {
    /* 1. Reduce overall page padding */
    body {
        padding: 40px 15px;
    }

    /* 2. Allow inputs to sit closer together and wrap if necessary */
    .input-group {
        gap: 20px;
        margin-bottom: 50px;
        flex-wrap: wrap;
        justify-content: center;
    }

    /* 3. Scale down the input boxes slightly */
    input {
        width: 100px;
        font-size: 1.8rem;
    }

    /* 4. Center the randomize button */
    .btn-field {
        align-items: center;
        width: 100%;
        margin-top: 10px;
    }

    /* 5. Stack the fraction and the exact formula vertically */
    .equation-wrapper {
        flex-direction: column;
        gap: 30px;
        width: 100%;
        min-height: auto;
        /* Allow horizontal scrolling if a fraction gets wildly deep */
        overflow-x: auto; 
        padding-bottom: 20px;
        -webkit-overflow-scrolling: touch;
    }

    /* 6. Stack the equals sign above the exact formula */
    .exact-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    /* 7. Slightly scale down the fraction text so it fits better */
    .a-plus-cell {
        font-size: 1.4rem;
        padding-right: 12px;
        min-width: 40px;
    }

    .numerator-cell {
        font-size: 1.3rem;
        padding: 0 15px 8px 15px;
    }
    .fraction-grid {
        /* THE FIX: Forbids the grid from shrinking below its natural width */
        min-width: max-content; 
    }

    .denominator-cell {
        /* Ensures nested fractions also refuse to compress */
        min-width: max-content;
    }
    /* 8. Adjust footer margins */
    footer {
        margin-top: 60px;
    }
    #fractionDisplay {
        /* Ensure the fraction container itself handles the scrolling */
        max-width: 100%;
        overflow-x: auto;
        /* Adds a little breathing room so the scrollbar doesn't clip the bottom */
        padding-bottom: 20px; 
    }
}
/* Container for the pills */
.pill-container {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    display: flex;
    flex-direction: row; /* Lay them out horizontally */
    gap: 6px;
    z-index: 10;
    overflow-x: auto; /* Allow horizontal scrolling */
    padding-bottom: 4px; /* Breathing room */
    
    /* Hide scrollbar for a totally clean UI */
    scrollbar-width: thin; /* Firefox: makes it less chunky */
    scrollbar-color: #d4d4d8 transparent;
}

.pill-container::-webkit-scrollbar {
    display: block; /* Overrides your 'none' */
    height: 5px;    /* Horizontal scrollbar height */
}
.pill-container::-webkit-scrollbar-thumb {
    background: #d4d4d8; 
    border-radius: 10px;
}

.pill-container::-webkit-scrollbar-track {
    background: transparent;
}
/* The Minimalist Pill */
.suggestion-pill {
    flex: 0 0 auto; /* Prevent pills from squishing; forces scroll */
    max-width: 90%; /* Prevent a single giant pill from taking the whole screen */
    background: #f4f4f5;
    color: #52525b;
    border: 1px solid #e4e4e7;
    border-radius: 12px;
    padding: 3px 12px;
    font-size: 0.75rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.suggestion-pill:hover {
    background: #e4e4e7;
    color: #18181b;
    transform: translateY(-1px);
}