/* =============================================
   FRACTION CALCULATOR — fraction.css
   Tool-specific styles only.
   Common styles are in tool.css
   ============================================= */

.frac-calc { width: 100%; display: flex; flex-direction: column; gap: 24px; }

/* Section card */
.frac-section {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    box-shadow: var(--shadow);
}
.frac-section-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--teal);
    display: inline-block;
}

/* Fraction input row */
.frac-row {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}
.frac-row-mixed { gap: 12px; }

/* Stacked fraction input */
.frac-input-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}
.frac-num, .frac-den {
    width: 70px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 16px;
    font-family: var(--font-mono);
    color: var(--text);
    background: var(--white);
    outline: none;
    text-align: center;
    transition: border-color 0.2s;
    box-sizing: border-box;
}
.frac-num:focus, .frac-den:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(0,201,167,0.1); }
.frac-line {
    width: 100%;
    height: 2px;
    background: var(--navy);
    border-radius: 2px;
    margin: 2px 0;
}

/* Whole number for mixed */
.frac-mixed-group { display: flex; align-items: center; gap: 8px; }
.frac-whole {
    width: 60px;
    padding: 8px 8px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 16px;
    font-family: var(--font-mono);
    color: var(--text);
    background: var(--white);
    outline: none;
    text-align: center;
    transition: border-color 0.2s;
    box-sizing: border-box;
}
.frac-whole:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(0,201,167,0.1); }

/* Operator select */
.frac-op-select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 18px;
    font-family: var(--font-main);
    color: var(--navy);
    background: var(--white);
    outline: none;
    cursor: pointer;
    font-weight: 700;
    transition: border-color 0.2s;
}
.frac-op-select:focus { border-color: var(--teal); }

/* Equals + question marks */
.frac-equals { font-size: 22px; font-weight: 700; color: var(--navy); }
.frac-result-group { opacity: 0.4; }
.frac-question { font-size: 20px; font-weight: 700; color: var(--muted); }

/* Decimal input */
.frac-decimal-input {
    width: 160px;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 16px;
    font-family: var(--font-mono);
    color: var(--text);
    background: var(--white);
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
}
.frac-decimal-input:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(0,201,167,0.1); }

/* Result box */
.frac-result-box {
    margin-top: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.frac-result-header {
    background: #16a34a;
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    padding: 8px 16px;
}

/* Answer row */
.frac-ans-row {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 16px 16px 8px;
    flex-wrap: wrap;
}
.frac-ans-whole {
    font-size: 28px;
    font-weight: 700;
    color: var(--navy);
    font-family: var(--font-mono);
}
.frac-ans-stack {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    vertical-align: middle;
}
.frac-ans-num {
    font-size: 20px;
    font-weight: 700;
    color: var(--navy);
    font-family: var(--font-mono);
    line-height: 1;
}
.frac-ans-line {
    width: 100%;
    height: 2px;
    background: var(--navy);
    min-width: 30px;
}
.frac-ans-den {
    font-size: 20px;
    font-weight: 700;
    color: var(--navy);
    font-family: var(--font-mono);
    line-height: 1;
}
.frac-ans-decimal {
    font-size: 14px;
    color: var(--text2);
}
.frac-ans-decimal strong { color: var(--teal); font-size: 16px; }

/* Pie chart */
.frac-pie-wrap {
    padding: 4px 16px 12px;
    display: flex;
    gap: 12px;
    align-items: center;
}

/* Steps */
.frac-steps {
    padding: 12px 16px 16px;
    border-top: 1px solid var(--border);
    background: var(--light);
}
.frac-steps-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 8px;
}
.frac-step {
    font-size: 14px;
    color: var(--text2);
    font-family: var(--font-mono);
    padding: 3px 0;
    line-height: 1.6;
}
.frac-step strong { color: var(--navy); }

@media (max-width: 600px) {
    .frac-row { gap: 10px; }
    .frac-num, .frac-den { width: 55px; }
    .frac-whole { width: 50px; }
}