/* ============================================================================
   AI QA — /ai-call-quality
   Page-specific layer on top of style.css. Uses the site tokens only.
   ========================================================================== */

/* ---- Hero --------------------------------------------------------------- */
.qa-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: center;
}
.qa-hero__title { font-size: clamp(38px, 5vw, 68px); }
.qa-hero .lede { margin-bottom: 28px; }
.qa-note {
    margin: 24px 0 0;
    max-width: 52ch;
    font-family: var(--mono);
    font-size: 12px;
    line-height: 1.7;
    color: var(--dim);
}

/* ---- Screenshot frames (light product UI inside a dark window) --------- */
.qa-shot {
    position: relative;
    margin: 0;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg-2);
    border: 1px solid var(--line-strong);
    box-shadow: var(--shadow-2), 0 0 60px rgba(255,107,91,0.05);
}
.qa-shot img { display: block; width: 100%; height: auto; background: #fff; }
.qa-shot figcaption {
    padding: 10px 14px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--dim);
    border-top: 1px solid var(--line);
}
.qa-shot__bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    border-bottom: 1px solid var(--line);
    background: var(--bg-3);
}
.qa-shot__bar span { width: 9px; height: 9px; border-radius: 50%; background: var(--bg-4); }
.qa-shot__bar span:first-child { background: var(--coral); }
.qa-shot__bar em {
    margin-left: 10px;
    font-style: normal;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    color: var(--dim);
}
.qa-shot--hero::before {
    content: '';
    position: absolute; left: 0; right: 0; top: 0; height: 1px; z-index: 1;
    background: linear-gradient(90deg, transparent, var(--coral), transparent);
    opacity: 0.6;
}
.qa-shot--wide { max-width: 1040px; margin-inline: auto; }
.qa-stack { display: grid; gap: 20px; }

/* ---- Proof strip --------------------------------------------------------- */
.qa-proof {
    padding: 28px 0 32px;
    border-block: 1px solid var(--line);
    background: var(--bg-1);
}
.qa-proof__row {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
}
.qa-proof__row li {
    padding: 6px 20px;
    border-left: 1px solid var(--line);
}
.qa-proof__row li:first-child { border-left: 0; padding-left: 0; }
.qa-proof__num {
    display: block;
    font-weight: 700;
    font-size: clamp(30px, 3.4vw, 44px);
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--text);
}
.qa-proof__label {
    display: block;
    margin-top: 6px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--coral);
}
.qa-proof__note {
    margin: 18px 0 0;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--dim);
}

/* ---- Section helpers ----------------------------------------------------- */
.qa-centered { text-align: center; margin-inline: auto; }
.qa-centered .section__lede { margin-inline: auto; }
.qa-cols-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.qa-cols-4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.qa-caveat {
    margin: 18px 0 0;
    max-width: 80ch;
    font-size: 13px;
    line-height: 1.65;
    color: var(--dim);
}
.qa-kicker {
    display: block;
    margin-bottom: 10px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--coral);
}
.qa-split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: center;
}
.qa-split--top { align-items: start; }

.qa-check { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 10px; }
.qa-check li {
    position: relative;
    padding-left: 26px;
    color: var(--muted);
    font-size: 14.5px;
    line-height: 1.55;
}
.qa-check li::before {
    content: '';
    position: absolute; left: 2px; top: 6px;
    width: 12px; height: 7px;
    border-left: 2px solid var(--coral);
    border-bottom: 2px solid var(--coral);
    transform: rotate(-45deg);
}

/* ---- How it works — 4-step flow (extends .voip-pipeline) ---------------- */
.qa-flow { grid-template-columns: repeat(4, 1fr); }
.qa-flow .voip-pipeline__node { display: flex; flex-direction: column; }
.qa-flow__tag {
    margin-top: auto;
    padding-top: 16px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    line-height: 1.5;
    color: var(--coral-light);
}

/* ---- Feature rows -------------------------------------------------------- */
.qa-feature {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: center;
    padding: clamp(32px, 4vw, 48px) 0;
    border-top: 1px solid var(--line);
}
.qa-feature:first-of-type { border-top: 0; padding-top: 0; }
.qa-feature--rev { grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr); }
.qa-feature--rev .qa-feature__copy { order: 2; }
.qa-feature__copy h3 {
    margin: 0 0 12px;
    font-size: clamp(22px, 2.2vw, 30px);
    font-weight: 600;
    letter-spacing: -0.015em;
    line-height: 1.15;
}
.qa-feature__copy p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.65; }

/* ---- Compliance rule card ----------------------------------------------- */
.qa-rules {
    padding: clamp(22px, 3vw, 32px);
    background: linear-gradient(180deg, rgba(255,107,91,0.05), transparent 70%), var(--bg-2);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2);
}
.qa-rules__example {
    margin: 0 0 24px;
    padding: 18px 20px;
    border-left: 3px solid var(--coral);
    border-radius: var(--radius-sm);
    background: var(--coral-soft);
    font-size: clamp(18px, 1.8vw, 22px);
    font-weight: 500;
    line-height: 1.4;
    color: var(--text);
}
.qa-rules__example span {
    display: block;
    margin-top: 8px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.06em;
    font-weight: 400;
    color: var(--dim);
}
.qa-rules__list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.qa-rules__list li {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid rgba(255,107,91,0.35);
    background: rgba(255,107,91,0.06);
    font-family: var(--mono);
    font-size: 12px;
    color: var(--coral-light);
}
.qa-rules__list li::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--coral); }
.qa-rules__list li.is-own { border-color: var(--line-strong); background: transparent; color: var(--text); }
.qa-rules__list li.is-own::before { background: var(--muted); }
.qa-rules__foot { margin: 18px 0 0; color: var(--muted); font-size: 13.5px; line-height: 1.6; }

.qa-flagstats { margin-top: clamp(40px, 5vw, 64px); }

/* ---- TO CONFIRM markers --------------------------------------------------- */
.qa-tbc {
    padding: 0 4px;
    border-radius: 3px;
    border-bottom: 2px dashed #F0C24A;
    background: rgba(240, 194, 74, 0.12);
    color: #FFE3A3;
}
.qa-tbc-banner {
    margin: 0 0 24px;
    padding: 12px 16px;
    border: 1px solid rgba(240, 194, 74, 0.4);
    border-radius: 10px;
    background: rgba(240, 194, 74, 0.08);
    color: #FFE3A3;
    font-family: var(--mono);
    font-size: 12.5px;
    line-height: 1.55;
}
.qa-tbc-banner strong { letter-spacing: 0.12em; }

/* ---- Pricing cards ------------------------------------------------------- */
.qa-prices {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    align-items: stretch;
}
.qa-price {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 28px 24px;
    background: linear-gradient(180deg, rgba(255,107,91,0.04), transparent 60%), var(--bg-2);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
}
.qa-price.is-feat {
    border-color: rgba(255,107,91,0.45);
    box-shadow: var(--shadow-coral);
}
.qa-price__badge {
    position: absolute; top: -12px; left: 24px;
    padding: 4px 12px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--coral-light), var(--coral) 60%, var(--coral-deep));
    color: #0A0A0C;
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.qa-price h3 { margin: 0; font-size: 22px; font-weight: 600; }
.qa-price__hours {
    margin-top: 6px;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.04em;
    color: var(--muted);
}
.qa-price__amount { margin: 22px 0 0; font-size: clamp(34px, 3.4vw, 44px); font-weight: 700; letter-spacing: -0.02em; line-height: 1; }
.qa-price__per { font-family: var(--mono); font-size: 13px; font-weight: 400; letter-spacing: 0; color: var(--muted); }
.qa-price__extra { margin: 10px 0 0; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.qa-price__best { margin: 18px 0 0; color: var(--muted); font-size: 14px; line-height: 1.55; }
.qa-price__best strong { color: var(--text); font-weight: 600; }
.qa-price .qa-check { margin-bottom: 26px; }
.qa-price .btn { margin-top: auto; width: 100%; }

/* ---- Calculator ---------------------------------------------------------- */
.qa-calc {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    gap: 20px;
    padding: 24px;
    background: var(--bg-2);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2);
}
.qa-calc__inputs { display: grid; gap: 22px; align-content: start; }
.qa-calc__field label {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 10px;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
}
.qa-calc__field output { font-family: var(--display); font-size: 20px; font-weight: 600; letter-spacing: 0; text-transform: none; color: var(--text); }
.qa-calc__field input[type=range] {
    width: 100%;
    height: 4px;
    margin: 0;
    -webkit-appearance: none;
    appearance: none;
    border-radius: 4px;
    background: var(--bg-4);
    accent-color: var(--coral);
}
.qa-calc__field input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px; height: 20px;
    border-radius: 50%;
    background: var(--coral);
    border: 3px solid var(--bg-2);
    box-shadow: 0 0 0 1px var(--coral), 0 0 16px var(--coral-glow);
    cursor: pointer;
}
.qa-calc__field input[type=range]::-moz-range-thumb {
    width: 16px; height: 16px;
    border-radius: 50%;
    background: var(--coral);
    border: 3px solid var(--bg-2);
    box-shadow: 0 0 0 1px var(--coral);
    cursor: pointer;
}
.qa-calc__note { margin: 0; color: var(--dim); font-size: 12.5px; line-height: 1.55; }
.qa-calc__result {
    padding: 22px;
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(255,107,91,0.08), transparent 70%), var(--bg-1);
    border: 1px solid var(--line);
}
.qa-calc__hours { margin: 0; font-size: 44px; font-weight: 700; line-height: 1; letter-spacing: -0.02em; }
.qa-calc__hours span + span { font-size: 16px; font-weight: 400; color: var(--muted); }
.qa-calc__calls { margin: 6px 0 0; font-family: var(--mono); font-size: 12px; color: var(--dim); }
.qa-calc__block { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); }
.qa-calc__block .qa-kicker { margin-bottom: 4px; }
.qa-calc__block strong { display: block; font-size: 22px; font-weight: 600; }
.qa-calc__sub { display: block; margin-top: 4px; font-size: 12.5px; line-height: 1.5; color: var(--muted); }
.qa-calc__result .btn { width: 100%; margin-top: 22px; white-space: normal; text-align: center; }

/* ---- FAQ ----------------------------------------------------------------- */
.qa-faq { display: grid; gap: 10px; }
.qa-faq details {
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    transition: border-color 0.25s var(--ease);
}
.qa-faq details[open] { border-color: rgba(255,107,91,0.35); }
.qa-faq summary {
    position: relative;
    padding: 18px 48px 18px 20px;
    cursor: pointer;
    list-style: none;
    font-size: 16px;
    font-weight: 600;
}
.qa-faq summary::-webkit-details-marker { display: none; }
.qa-faq summary::after {
    content: '+';
    position: absolute; right: 20px; top: 50%;
    transform: translateY(-50%);
    font-family: var(--mono);
    font-size: 18px;
    color: var(--coral);
}
.qa-faq details[open] summary::after { content: '−'; }
.qa-faq details p { margin: 0; padding: 0 20px 20px; color: var(--muted); font-size: 15px; line-height: 1.65; }

/* ---- Demo form ----------------------------------------------------------- */
#demo .form__footer { grid-column: 1 / -1; }

/* ---- Responsive ---------------------------------------------------------- */
@media (max-width: 1024px) {
    .qa-hero__grid,
    .qa-split,
    .qa-feature,
    .qa-feature--rev { grid-template-columns: 1fr; }
    .qa-feature--rev .qa-feature__copy { order: 0; }
    .qa-flow { grid-template-columns: repeat(2, 1fr); }
    .qa-prices { grid-template-columns: 1fr; max-width: 560px; }
    .qa-proof__row { grid-template-columns: repeat(3, 1fr); row-gap: 20px; }
    .qa-proof__row li:nth-child(4) { border-left: 0; padding-left: 0; }
}
@media (max-width: 820px) {
    .contact__grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .qa-calc { grid-template-columns: 1fr; padding: 16px; }
    .qa-proof__row { grid-template-columns: repeat(2, 1fr); }
    .qa-proof__row li { padding-left: 0; border-left: 0; }
    #demo .form { grid-template-columns: 1fr; padding: 20px; }
    .qa-shot__bar em { display: none; }
}
@media (max-width: 520px) {
    .qa-flow { grid-template-columns: 1fr; }
}

/* ---- Screenshot lightbox ------------------------------------------------- */
.qa-shot img { cursor: zoom-in; }
.qa-shot img:focus-visible { outline: 2px solid var(--coral); outline-offset: -2px; }
.qa-lightbox-open { overflow: hidden; }
.qa-lightbox {
    width: 100vw; height: 100vh;
    max-width: none; max-height: none;
    margin: 0; padding: 0;
    border: 0;
    background: transparent;
    color: var(--text);
}
.qa-lightbox::backdrop { background: rgba(6, 6, 8, 0.92); backdrop-filter: blur(4px); }
.qa-lightbox__fig {
    margin: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 56px 72px 28px;
    cursor: zoom-out;
}
.qa-lightbox__fig img {
    display: block;
    max-width: 100%;
    max-height: calc(100vh - 130px);
    width: auto; height: auto;
    border-radius: var(--radius);
    border: 1px solid var(--line-strong);
    background: #fff;
    box-shadow: var(--shadow-2);
    cursor: default;
}
.qa-lightbox__fig figcaption {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.04em;
    color: var(--muted);
    text-align: center;
}
.qa-lightbox__close,
.qa-lightbox__nav {
    position: fixed;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px; height: 44px;
    border-radius: 50%;
    border: 1px solid var(--line-strong);
    background: var(--bg-2);
    color: var(--text);
    font-family: var(--display);
    font-size: 26px;
    line-height: 1;
    cursor: pointer;
    transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.qa-lightbox__close:hover,
.qa-lightbox__nav:hover { border-color: var(--coral); color: var(--coral); }
.qa-lightbox__close { top: 12px; right: 16px; }
.qa-lightbox__nav { top: 50%; transform: translateY(-50%); }
.qa-lightbox__nav--prev { left: 14px; }
.qa-lightbox__nav--next { right: 14px; }
@media (max-width: 640px) {
    .qa-lightbox__fig { padding: 60px 8px 76px; }
    .qa-lightbox__nav { top: auto; bottom: 16px; transform: none; }
    .qa-lightbox__nav--prev { left: calc(50% - 56px); }
    .qa-lightbox__nav--next { right: calc(50% - 56px); }
}