/* ═══════════════════════════════════════════════════════
   style_how.css  —  styles specific to how.html
   Requires: style_common.css
   ═══════════════════════════════════════════════════════ */

html { scroll-padding-top: 6rem; }

/* ── HERO overrides ── */
.hero {
    min-height: 50vh;
    justify-content: flex-end;
    padding: 10rem 3rem 5rem;
}

.hero::before {
    background:
        radial-gradient(ellipse 45% 65% at 75% 30%, rgba(0,200,212,0.08) 0%, transparent 65%),
        radial-gradient(ellipse 40% 50% at 20% 70%, rgba(59,158,255,0.07) 0%, transparent 60%);
}

.hero h1 {
    font-size: clamp(2.4rem, 5vw, 4.5rem);
    max-width: 20ch;
}

.hero-sub { max-width: 52ch; }

/* ── CONTENT GRID ── */
.content-grid {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 0;
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 3rem 6rem;
    align-items: start;
}

/* ── SIDEBAR NAV ── */
.content-nav {
    position: sticky;
    top: 5.5rem;
    background: var(--mid);
    border: 1px solid var(--border2);
    padding: 1.5rem;
    margin-right: 3rem;
}

.content-nav-title {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 1rem;
}

.content-nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.content-nav a {
    display: block;
    font-size: 0.82rem;
    color: var(--muted);
    text-decoration: none;
    font-weight: 400;
    padding: 0.5rem 0 0.5rem 0.9rem;
    border-left: 2px solid transparent;
    transition: color 0.2s, border-left-color 0.2s;
    line-height: 1.4;
}

.content-nav a:hover {
    color: var(--white);
    border-left-color: var(--border);
}

/* ── MAIN CONTENT ── */
.content-body {
    min-width: 0;
}

/* ── SECTION BLOCKS ── */
.section-block {
    padding: 3rem 0;
    border-bottom: 1px solid var(--border2);
}

.section-block:first-child { padding-top: 0; }
.section-block:last-child  { border-bottom: none; }

.section-block .section-label { margin-bottom: 0.6rem; }

.section-block h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 1.25rem;
}

.section-block p {
    color: var(--accent2);
    font-size: 0.97rem;
    font-weight: 300;
    line-height: 1.8;
    max-width: 62ch;
    margin-bottom: 1rem;
}

.section-block p:last-child { margin-bottom: 0; }

.section-block p strong {
    color: var(--white);
    font-weight: 600;
}

/* ── PULL QUOTE ── */
.pull-quote {
    border-left: 3px solid var(--accent);
    background: rgba(59,158,255,0.05);
    padding: 1.25rem 1.5rem;
    margin: 1.75rem 0;
}

.pull-quote p {
    color: var(--white) !important;
    font-size: 0.97rem !important;
    font-style: italic;
    font-weight: 400 !important;
    margin: 0 !important;
}

/* ── RESULT CALLOUT ── */
.result-callout {
    background: var(--mid);
    border: 1px solid var(--border);
    padding: 1.5rem 2rem;
    margin: 1.75rem 0;
}

.result-callout p {
    color: var(--accent2) !important;
    font-size: 0.95rem !important;
    margin: 0 !important;
}

.result-callout p strong {
    color: var(--accent) !important;
}

/* ── PROCESS STEPS ── */
.process-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin: 1.75rem 0;
    border: 1px solid var(--border2);
}

.process-step {
    display: grid;
    grid-template-columns: 56px 1fr;
    border-bottom: 1px solid var(--border2);
    transition: background 0.2s;
}

.process-step:last-child { border-bottom: none; }
.process-step:hover { background: rgba(59,158,255,0.025); }

.step-num {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: rgba(59,158,255,0.15);
    line-height: 1;
    padding: 1.5rem 0 1.5rem 1.25rem;
    display: flex;
    align-items: flex-start;
    padding-top: 1.6rem;
}

.step-body {
    padding: 1.5rem 1.75rem 1.5rem 0;
    border-left: 1px solid var(--border2);
    padding-left: 1.5rem;
}

.step-body h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
    color: var(--white);
}

.step-body p {
    color: var(--accent2) !important;
    font-size: 0.88rem !important;
    font-weight: 300 !important;
    line-height: 1.65 !important;
    max-width: 100% !important;
    margin: 0 !important;
}

/* ── DATA FLOW DIAGRAM (text-based) ── */
.data-flow {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin: 1.75rem 0;
}

.flow-row {
    display: flex;
    align-items: stretch;
    gap: 0;
}

.flow-node {
    background: var(--mid);
    border: 1px solid var(--border);
    padding: 1rem 1.5rem;
    flex: 1;
    position: relative;
}

.flow-node-label {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 0.35rem;
}

.flow-node-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.25rem;
}

.flow-node-desc {
    font-size: 0.8rem;
    color: var(--accent2);
    font-weight: 300;
    line-height: 1.5;
}

.flow-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    flex-shrink: 0;
    color: var(--accent);
    font-size: 1.1rem;
}

.flow-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0;
    color: var(--accent);
}

/* ── CTA STRIP ── */
.cta-strip {
    background: var(--mid2);
    border-top: 1px solid var(--border);
    padding: 5rem 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-strip::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 80% at 50% 50%, rgba(59,158,255,0.05) 0%, transparent 70%);
    pointer-events: none;
}

.cta-strip h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(1.6rem, 3vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.cta-strip p {
    color: var(--accent2);
    font-size: 1rem;
    font-weight: 300;
    max-width: 46ch;
    margin: 0 auto 2rem;
    line-height: 1.75;
}

.btn-row {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* ── TABLET ── */
@media (max-width: 1024px) {
    .content-grid {
        grid-template-columns: 190px 1fr;
        padding: 3rem 2rem 5rem;
        gap: 0;
    }
    .content-nav { margin-right: 2rem; }
    .hero { padding: 9rem 2rem 4rem; }
    .cta-strip { padding: 4rem 2rem; }
}

/* ── MOBILE ── */
@media (max-width: 767px) {
    .hero { min-height: auto; padding: 7rem 1.25rem 3.5rem; }
    .hero h1 { font-size: clamp(2rem, 8vw, 2.8rem); max-width: 100%; }
    .hero-sub { font-size: 0.97rem; max-width: 100%; }

    .content-grid {
        grid-template-columns: 1fr;
        padding: 2rem 1.25rem 4rem;
    }

    .content-nav {
        position: static;
        margin-right: 0;
        margin-bottom: 2.5rem;
    }

    .content-nav ul { flex-direction: row; flex-wrap: wrap; gap: 0.25rem; }
    .content-nav a  { border-left: none; border-bottom: 2px solid transparent; padding: 0.35rem 0.5rem; }
    .content-nav a:hover { border-bottom-color: var(--border); border-left-color: transparent; }

    .section-block { padding: 2.5rem 0; }
    .section-block h2 { font-size: 1.4rem; }

    .process-step { grid-template-columns: 44px 1fr; }
    .step-num { font-size: 1.25rem; padding-left: 0.75rem; }

    .flow-arrow { width: 1.75rem; font-size: 0.9rem; }

    .cta-strip { padding: 4rem 1.25rem; }
    .btn-row { flex-direction: column; align-items: center; }
    .btn { width: 100%; justify-content: center; }
}