/* fonc_quad.css — styles for the quadratic function widget
 * All rules are scoped to .fonc_quad to avoid collisions with the host site.
 */

.fonc_quad {
    font-family: "Segoe UI", Arial, sans-serif;
    background: #ffffff;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.09);
    max-width: 860px;
    margin: 28px auto;
    line-height: 1.5;
}

/* ── headings ────────────────────────────────────────────────── */

.fonc_quad h2 {
    text-align: center;
    margin: 0 0 18px;
    font-size: 1.25rem;
}

.fonc_quad h3 {
    margin: 18px 0 8px;
    font-size: 1rem;
    color: #444;
}

/* ── coefficient inputs ──────────────────────────────────────── */

.fonc_quad .fq-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
    margin-bottom: 4px;
}

.fonc_quad .fq-controls label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
}

.fonc_quad .fq-controls input {
    width: 68px;
    padding: 5px 8px;
    text-align: center;
    border: 1px solid #bbc;
    border-radius: 5px;
    font-size: 0.95rem;
    background: #f8f9fc;
    transition: border-color 0.15s;
}

.fonc_quad .fq-controls input:focus {
    outline: none;
    border-color: #3498db;
    background: #fff;
}

/* ── info boxes ──────────────────────────────────────────────── */

.fonc_quad .fq-form-box {
    background: #f4f7ff;
    padding: 14px 16px;
    border-radius: 8px;
    margin-bottom: 14px;
    line-height: 1.7;
    transition: background 0.2s;
}

.fonc_quad .fq-form-box:hover {
    background: #eaf0ff;
}

.fonc_quad .fq-form-box:empty {
    display: none;
}

/* ── chart ───────────────────────────────────────────────────── */

.fonc_quad .fq-chart-wrapper {
    max-width: 700px;
    margin: 16px auto 0;
}

/* ── colour helpers ──────────────────────────────────────────── */

.fonc_quad .fq-orange { color: #e67e22; font-weight: 700; }
.fonc_quad .fq-green  { color: #27ae60; font-weight: 700; }
.fonc_quad .fq-red    { color: #e74c3c; font-weight: 700; }
.fonc_quad .fq-muted  { opacity: 0.65; }

/* ── characteristic-points paragraph ────────────────────────── */

.fonc_quad #fq-points {
    margin: 4px 0 0;
    line-height: 2;
}