/* =========================================================
   QCAASNET — IBM CIRCUIT CUTTING PAPER
   IBM-only components layered on top of the shared Google-style
   paper system loaded by index.html.
   ========================================================= */


/* =========================================================
   IBM PAPER PAGE
   GOOGLE-MATCHED PAPER SYSTEM
   ========================================================= */

.paper-page {
    padding: 42px 0 90px;
}


/* =========================================================
   BREADCRUMBS
   ========================================================= */

.paper-breadcrumbs {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 48px;

    color: #71849a;
    font-size: 11px;
    letter-spacing: .04em;
}

.paper-breadcrumbs a {
    color: #91a5bb;
    text-decoration: none;
}

.paper-breadcrumbs span:last-child {
    color: #4e6379;
}


/* =========================================================
   HERO
   ========================================================= */

.paper-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(420px, .9fr);
    gap: 70px;
    align-items: center;

    padding: 20px 0 80px;

    border-bottom: 1px solid var(--line);
}

.paper-hero-copy {
    max-width: 760px;
}

.paper-hero .eyebrow {
    margin-bottom: 22px;
}

.paper-hero h1 {
    margin: 0;

    font-size: clamp(48px, 5vw, 78px);
    line-height: .98;
    letter-spacing: -.045em;
    color: #f2f5f8;
}

.paper-hero h1 span {
    color: #10c8c8;
}

.paper-lead {
    max-width: 690px;
    margin: 30px 0 28px;

    color: #9eb1c6;
    font-size: 18px;
    line-height: 1.7;
}

.paper-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 22px;

    color: #10c8c8;
    font-family: monospace;
    font-size: 11px;
    letter-spacing: .08em;
}

.paper-meta span + span {
    color: #8295aa;
}


.paper-hero-image {
    width: 100%;
    overflow: hidden;

    border: 1px solid var(--line);
    border-radius: 12px;

    background: #07111e;
}

.paper-hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* =========================================================
   METRIC STRIPS
   ========================================================= */

.metric-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;

    margin: 42px 0 0;

    border: 1px solid var(--line);
    background: var(--line);
}

.metric-strip.two {
    grid-template-columns: repeat(2, 1fr);
}

.metric-strip > div {
    min-height: 130px;
    padding: 24px;

    background: #07111e;
}

.metric-strip span {
    display: block;

    margin-bottom: 12px;

    color: #70869d;
    font-family: monospace;
    font-size: 10px;
    letter-spacing: .12em;
}

.metric-strip strong {
    display: block;

    color: #10c8c8;
    font-family: Georgia, serif;
    font-size: 34px;
}

.metric-strip small {
    display: block;

    margin-top: 8px;

    color: #71859c;
    font-size: 12px;
}


/* =========================================================
   CARD FORMULAS
   ========================================================= */

.card-formula {
    margin-top: 22px;
    padding-top: 16px;

    border-top: 1px solid var(--line);

    color: #10c8c8;
    font-family: monospace;
    font-size: 10px;
    letter-spacing: .08em;
}


/* =========================================================
   PROCESS FLOW
   ========================================================= */

.process-flow {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
    align-items: center;

    margin: 42px 0;
}

.process-step {
    min-height: 120px;
    padding: 20px;

    border: 1px solid var(--line);
    border-radius: 9px;

    background: #07111e;
}

.process-step.highlighted {
    border-color: #155b7b;
}

.process-step span {
    display: block;

    margin-bottom: 14px;

    color: #10c8c8;
    font-family: monospace;
    font-size: 10px;
}

.process-step strong {
    display: block;

    color: #edf3f8;
    font-size: 13px;
}

.process-step em {
    display: block;

    margin-top: 8px;

    color: #71859c;
    font-size: 12px;
    font-style: normal;
}

.process-line {
    width: 28px;
    height: 1px;

    background: #155b7b;
}


/* =========================================================
   COMPARISON BOX
   ========================================================= */

.comparison-box {
    margin: 40px 0 0;

    border: 1px solid var(--line);
}

.comparison-row {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;

    border-top: 1px solid var(--line);
}

.comparison-row:first-child {
    border-top: 0;
}

.comparison-row > * {
    padding: 18px 20px;
}

.comparison-row span,
.comparison-row strong {
    color: #a7b8c9;
}

.header-row {
    color: #70869d;
    font-family: monospace;
    font-size: 10px;
    letter-spacing: .1em;
}

.header-row span {
    color: #70869d;
}

.accent-value {
    color: #10c8c8 !important;
}


/* =========================================================
   RESULT CARDS
   ========================================================= */

.results-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;

    margin-top: 42px;
}

.result-card {
    padding: 28px;

    border: 1px solid var(--line);
    border-radius: 10px;

    background: rgba(7,17,30,.68);
}

.result-top {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 20px;
}

.result-top span {
    color: #70869d;
    font-family: monospace;
    font-size: 10px;
    letter-spacing: .12em;
}

.result-top strong {
    color: #10c8c8;
    font-family: Georgia, serif;
    font-size: 32px;
}

.result-card h3 {
    margin: 18px 0 10px;

    color: #edf3f8;
    font-size: 22px;
}

.result-card p {
    margin: 0 0 28px !important;
}

.execution-bar {
    margin-top: 16px;
}

.execution-bar > div:first-child {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 7px;
}

.execution-bar span {
    color: #71859c;
    font-family: monospace;
    font-size: 9px;
    letter-spacing: .1em;
}

.execution-bar strong {
    color: #dfeaf2;
    font-family: monospace;
    font-size: 12px;
}

.bar-track {
    height: 5px;

    border-radius: 10px;

    background: #102334;
    overflow: hidden;
}

.bar-track i {
    display: block;

    height: 100%;

    border-radius: inherit;

    background: #10c8c8;
}

.result-card > small {
    display: block;

    margin-top: 26px;

    color: #71859c;
    font-size: 12px;
    line-height: 1.6;
}

.research-note,
.caution-box {
    margin-top: 32px;
    padding: 24px;

    border-left: 2px solid #10c8c8;

    background: rgba(6,23,38,.58);
}

.research-note strong,
.caution-box strong {
    color: #10c8c8;
    font-family: monospace;
    font-size: 10px;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.research-note p,
.caution-box p {
    margin-bottom: 0 !important;
}


/* =========================================================
   BENCHMARK TABLE
   ========================================================= */

.benchmark-table-wrap {
    margin-top: 40px;

    border: 1px solid var(--line);
    overflow-x: auto;
}

.benchmark-table {
    width: 100%;
    min-width: 720px;

    border-collapse: collapse;
}

.benchmark-table th,
.benchmark-table td {
    padding: 14px 16px;

    border-bottom: 1px solid var(--line);

    text-align: left;
}

.benchmark-table th {
    color: #70869d;
    font-family: monospace;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;

    background: #07111e;
}

.benchmark-table td {
    color: #9eb1c6;
    font-size: 13px;
}

.benchmark-table td:not(:first-child) {
    font-family: monospace;
}

.benchmark-table tr:last-child td {
    border-bottom: 0;
}

.benchmark-table .warning-row td {
    background: rgba(94,60,20,.18);
}

.benchmark-table .warning-row td:last-child {
    color: #10c8c8;
}


/* =========================================================
   SIMULATED ANNEALING
   ========================================================= */

.annealing-flow {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
    align-items: center;

    margin: 42px 0;
}

.annealing-node {
    min-height: 120px;
    padding: 20px;

    border: 1px solid var(--line);
    border-radius: 9px;

    background: #07111e;
}

.annealing-node.active {
    border-color: #155b7b;
    box-shadow: 0 0 28px rgba(16,200,200,.045);
}

.annealing-node span {
    display: block;

    color: #10c8c8;
    font-family: monospace;
    font-size: 10px;
}

.annealing-node strong {
    display: block;

    margin-top: 12px;

    color: #edf3f8;
    font-size: 13px;
}

.annealing-node em {
    display: block;

    margin-top: 7px;

    color: #71859c;
    font-size: 11px;
    font-style: normal;
}

.annealing-arrow {
    padding: 0 10px;

    color: #155b7b;
    font-size: 18px;
}


/* =========================================================
   OBSERVABLE RESULTS
   ========================================================= */

.observable-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;

    margin-top: 40px;
}

.observable-grid article {
    padding: 26px;

    border: 1px solid var(--line);
    border-radius: 9px;

    background: rgba(7,17,30,.68);
}

.observable-grid span {
    display: block;

    color: #70869d;
    font-family: monospace;
    font-size: 10px;
    letter-spacing: .1em;
}

.observable-grid strong {
    display: block;

    margin-top: 20px;

    color: #10c8c8;
    font-family: Georgia, serif;
    font-size: 28px;
}

.observable-grid small {
    display: block;

    margin-top: 7px;

    color: #71859c;
    font-size: 11px;
}


/* =========================================================
   CAUTION
   ========================================================= */

.paper-caution {
    max-width: 900px;
}

.paper-caution > h2 {
    max-width: 800px;
}


/* =========================================================
   TAKEAWAY
   ========================================================= */

.paper-takeaway {
    max-width: 900px;
}

.paper-takeaway .section-label .brand-accent {
    color: #10c8c8;
}

.paper-takeaway p {
    font-size: 18px;
}

.takeaway-statement {
    margin-top: 42px;
    padding: 32px;

    border: 1px solid #155b7b;
    border-radius: 10px;

    background: rgba(6,23,38,.62);
}

.takeaway-statement span {
    display: block;

    margin-bottom: 15px;

    color: #10c8c8;
    font-family: monospace;
    font-size: 10px;
    letter-spacing: .12em;
}

.takeaway-statement strong {
    display: block;

    color: #edf3f8;
    font-size: clamp(22px, 3vw, 32px);
    line-height: 1.25;
    letter-spacing: -.02em;
}


/* =========================================================
   ORIGINAL RESEARCH
   ========================================================= */

.paper-source {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;

    margin: 20px auto 30px;
    padding: 40px;

    width: min(1050px, calc(100% - 48px));
    box-sizing: border-box;

    border: 1px solid #155b7b;
    border-radius: 12px;

    background: rgba(7,17,30,.75);
}

.paper-source h2 {
    margin: 0 0 12px;

    color: #f2f5f8;
    font-size: 30px;
    line-height: 1.15;
}

.paper-source p {
    margin: 0 0 10px;

    color: #8fa5ba;
}

.paper-source .source-details {
    color: #71859c;
    font-family: monospace;
    font-size: 11px;
}

.source-actions {
    display: flex;
    flex-direction: column;
    gap: 9px;

    flex: 0 0 auto;
}

.source-actions a {
    display: inline-flex;
    justify-content: space-between;
    gap: 18px;

    min-width: 150px;

    padding: 13px 16px;

    border: 1px solid #155b7b;
    border-radius: 7px;

    color: #10c8c8;
    font-family: monospace;
    font-size: 10px;
    text-decoration: none;
    letter-spacing: .08em;

    transition:
        border-color .2s ease,
        background .2s ease,
        color .2s ease;
}

.source-actions a:hover {
    border-color: #10c8c8;
    background: rgba(16,200,200,.05);
}

.source-actions a span {
    margin-left: auto;
}


/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 1000px) {

    .ibm-paper-hero {
        grid-template-columns: 1fr;
        gap: 42px;
    }

    .circuit-hero-visual {
        min-height: auto;
    }

    .process-flow,
    .annealing-flow {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .process-line {
        width: 1px;
        height: 24px;
        margin: 0 auto;
    }

    .annealing-arrow {
        padding: 4px 0;
        text-align: center;
    }

    .results-grid {
        grid-template-columns: 1fr;
    }

    .paper-source {
        flex-direction: column;
        align-items: flex-start;
    }

    .source-actions {
        width: 100%;
    }

    .source-actions a {
        width: 100%;
        box-sizing: border-box;
    }
}


@media (max-width: 720px) {

    .ibm-paper-hero {
        padding-top: 45px;
        padding-bottom: 40px;
    }

    .paper-hero-copy h1 {
        font-size: clamp(40px, 12vw, 58px);
    }

    .paper-hero-description {
        font-size: 16px;
    }

    .circuit-hero-visual {
        padding: 20px;
    }

    .metric-strip,
    .metric-strip.two,
    .observable-grid {
        grid-template-columns: 1fr;
    }

    .comparison-row {
        grid-template-columns: 1.2fr 1fr 1fr;
    }

    .comparison-row > * {
        padding: 14px 12px;
        font-size: 12px;
    }

    .takeaway-statement {
        padding: 24px;
    }

}