/* ===========================================================
   Tri Axle Projects (Pty) Ltd - site.css
   Palette and type derived from the company profile:
   navy + steel grey logo, blueprint chevrons, safety-yellow
   handrails from the 3D models.
   =========================================================== */

:root {
    --navy: #17356b;
    --navy-deep: #0e2148;
    --blue: #2c63b4;
    --blue-wash: #e8eef8;
    --graphite: #22262b;
    --steel: #9aa1a9;
    --line: #dde2e8;
    --paper: #f2f4f7;
    --white: #ffffff;
    --safety: #ffc629;
    --text: #1c2229;
    --muted: #5a636d;

    --shell: 1180px;
    --gutter: 24px;

    --display: "Chakra Petch", "Segoe UI Semibold", Impact, sans-serif;
    --body: "Barlow", "Segoe UI", Arial, sans-serif;
    --mono: "IBM Plex Mono", Consolas, "Courier New", monospace;
}

/* ---------- reset ---------- */
* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--white);
    color: var(--text);
    font-family: var(--body);
    font-size: 17px;
    line-height: 1.62;
}

img { max-width: 100%; height: auto; display: block; border: 0; }

a { color: var(--navy); text-decoration: none; }

a:hover { color: var(--blue); }

p { margin: 0 0 1.1em; }

ul { margin: 0 0 1.1em; padding-left: 1.1em; }

:focus-visible { outline: 3px solid var(--safety); outline-offset: 2px; }

.skip-link {
    position: absolute; left: -9999px; top: 0; z-index: 200;
    background: var(--safety); color: var(--graphite);
    padding: 12px 18px; font-family: var(--mono); font-size: 13px;
}
.skip-link:focus { left: 0; }

/* ---------- type ---------- */
h1, h2, h3, h4 {
    font-family: var(--display);
    font-weight: 600;
    color: var(--navy);
    line-height: 1.1;
    margin: 0 0 0.5em;
    letter-spacing: 0.01em;
}

h1 { font-size: clamp(2.1rem, 5.4vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.35rem); text-transform: uppercase; }
h3 { font-size: 1.2rem; text-transform: uppercase; letter-spacing: 0.04em; }
h4 { font-size: 1.02rem; }

.eyebrow {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--blue);
    margin: 0 0 14px;
}

.eyebrow::before {
    content: "";
    width: 18px; height: 12px; flex: none;
    background: currentColor;
    clip-path: polygon(0 0, 42% 0, 100% 50%, 42% 100%, 0 100%, 58% 50%);
}

.lede { font-size: 1.12rem; color: var(--muted); max-width: 62ch; }

.rule {
    height: 3px; width: 68px; margin: 0 0 26px;
    background: linear-gradient(90deg, var(--navy) 0 60%, var(--safety) 60% 100%);
}

/* ---------- shell ---------- */
.shell {
    max-width: var(--shell);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.band { padding: 84px 0; }
.band--paper { background: var(--paper); }
.band--tight { padding: 56px 0; }

.band--dark {
    background: var(--graphite);
    color: #ced4da;
}
.band--dark h2, .band--dark h3 { color: var(--white); }
.band--dark .lede { color: #aeb5bd; }

/* ---------- top strip + masthead ---------- */
.topbar {
    background: var(--graphite);
    color: #b9c0c8;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.06em;
}

.topbar .shell {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 28px;
    align-items: center;
    justify-content: flex-end;
    min-height: 40px;
}

.topbar a { color: #b9c0c8; }
.topbar a:hover { color: var(--safety); }
.topbar .reg { margin-right: auto; color: #7d858e; }

.masthead {
    position: sticky; top: 0; z-index: 50;
    background: var(--white);
    border-bottom: 1px solid var(--line);
}

.masthead .shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 84px;
}

.brand img { width: 232px; }

.nav-toggle {
    display: none;
    background: var(--navy); color: var(--white);
    border: 0; padding: 11px 14px; cursor: pointer;
    font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em;
}

.nav { display: flex; align-items: center; gap: 6px; }

.nav a {
    font-family: var(--display);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--graphite);
    padding: 10px 14px;
    border-bottom: 3px solid transparent;
}

.nav a:hover { color: var(--navy); border-bottom-color: var(--safety); }
.nav a.is-active { color: var(--navy); border-bottom-color: var(--navy); }

.nav .btn { margin-left: 10px; border-bottom: 0; }
.nav .btn:hover { border-bottom: 0; }

/* ---------- buttons ---------- */
.btn {
    display: inline-block;
    font-family: var(--display);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 14px 26px;
    border: 2px solid var(--navy);
    background: var(--navy);
    color: var(--white);
    cursor: pointer;
    transition: background .18s ease, color .18s ease, border-color .18s ease;
}

.btn:hover { background: var(--blue); border-color: var(--blue); color: var(--white); }

.btn--ghost { background: transparent; color: var(--navy); }
.btn--ghost:hover { background: var(--navy); color: var(--white); }

.btn--onDark { border-color: var(--white); background: transparent; color: var(--white); }
.btn--onDark:hover { background: var(--safety); border-color: var(--safety); color: var(--graphite); }

/* ---------- hero ---------- */
.hero {
    position: relative;
    overflow: hidden;
    background: var(--navy-deep);
    color: #dbe3ee;
}

.hero::before {
    content: "";
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px);
    background-size: 44px 44px;
}

.hero::after {
    content: "";
    position: absolute; top: -12%; left: -6%;
    width: 46%; height: 124%;
    background: var(--blue);
    opacity: .34;
    clip-path: polygon(0 0, 46% 0, 100% 50%, 46% 100%, 0 100%, 54% 50%);
}

.hero .shell {
    position: relative; z-index: 2;
    display: grid;
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
    gap: 48px;
    align-items: center;
    padding-top: 86px;
    padding-bottom: 86px;
}

.hero h1 { color: var(--white); }
.hero .eyebrow { color: var(--safety); }
.hero p { color: #bcc8da; font-size: 1.12rem; max-width: 46ch; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }

.hero-figure { position: relative; }

.hero-figure img {
    width: 100%;
    filter: drop-shadow(0 26px 40px rgba(0,0,0,.45));
}

.hero-figure figcaption {
    font-family: var(--mono);
    font-size: 11.5px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #8fa1bd;
    margin-top: 14px;
    border-top: 1px solid rgba(255,255,255,.18);
    padding-top: 10px;
}

/* ---------- discipline rail ---------- */
.rail {
    background: var(--graphite);
    border-top: 3px solid var(--safety);
    padding: 20px 0;
}

.rail ul {
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 34px;
    justify-content: center;
    font-family: var(--mono);
    font-size: 12.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #c2c9d1;
}

.rail li { display: flex; align-items: center; gap: 10px; }
.rail li + li::before {
    content: "";
    width: 9px; height: 9px;
    background: var(--safety);
    clip-path: polygon(0 0, 100% 50%, 0 100%);
}

/* ---------- generic grid ---------- */
.grid { display: grid; gap: 26px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 56px; align-items: start; }

.section-head { max-width: 720px; margin-bottom: 44px; }

/* ---------- cards ---------- */
.card {
    position: relative;
    background: var(--white);
    border: 1px solid var(--line);
    border-top: 4px solid var(--navy);
    padding: 30px 28px 26px;
    transition: transform .2s ease, box-shadow .2s ease;
}

.card:hover { transform: translateY(-4px); box-shadow: 0 18px 34px rgba(23,53,107,.13); }
.card h3 { margin-bottom: 12px; }
.card p { color: var(--muted); margin-bottom: 0; }

.card .tag {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--steel);
    display: block;
    margin-bottom: 10px;
}

/* checklist */
.checks { list-style: none; margin: 0; padding: 0; }

.checks li {
    position: relative;
    padding: 8px 0 8px 26px;
    border-bottom: 1px dashed var(--line);
}

.checks li::before {
    content: "";
    position: absolute; left: 0; top: 17px;
    width: 13px; height: 10px;
    background: var(--blue);
    clip-path: polygon(0 0, 42% 0, 100% 50%, 42% 100%, 0 100%, 58% 50%);
}

.checks--dark li { border-bottom-color: rgba(255,255,255,.14); }
.checks--dark li::before { background: var(--safety); }

/* ---------- industries ---------- */
.industries { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 2px; background: var(--line); }

.industry {
    background: var(--white);
    padding: 30px 20px;
    text-align: center;
}

.industry span {
    display: block;
    font-family: var(--display);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--navy);
    font-size: 0.98rem;
}

.industry small {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--steel);
    letter-spacing: 0.1em;
}

/* ---------- work / project tiles ---------- */
.work { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }

.work-item {
    border: 1px solid var(--line);
    background: var(--white);
    display: flex;
    flex-direction: column;
}

.work-item .shot {
    background: var(--paper);
    padding: 18px;
    border-bottom: 1px solid var(--line);
    height: 208px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.work-item .shot img { max-height: 100%; width: auto; object-fit: contain; }

.work-item .meta { flex: 1 1 auto; }

.work-item .meta { padding: 22px 24px 26px; }

.work-item .meta h3 { font-size: 1.05rem; margin-bottom: 8px; }

.work-item .meta p { color: var(--muted); font-size: 0.96rem; margin: 0; }

.work-item .scope {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--blue);
    display: block;
    margin-bottom: 10px;
}

/* ---------- quote ---------- */
.quote {
    border-left: 5px solid var(--safety);
    padding: 6px 0 6px 26px;
    font-family: var(--display);
    font-size: 1.35rem;
    line-height: 1.35;
    color: var(--navy);
    font-weight: 500;
}

.band--dark .quote { color: var(--white); }

.quote cite {
    display: block;
    font-family: var(--mono);
    font-size: 11.5px;
    font-style: normal;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--steel);
    margin-top: 14px;
}

/* ---------- people ---------- */
.person {
    display: grid;
    grid-template-columns: 78px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
    border-top: 1px solid var(--line);
    padding: 26px 0;
}

.person .initials {
    background: var(--navy);
    color: var(--white);
    font-family: var(--display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 78px;
}

.person h3 { margin-bottom: 4px; }

.person .role {
    font-family: var(--mono);
    font-size: 11.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--blue);
    display: block;
    margin-bottom: 10px;
}

.person p { margin-bottom: 8px; color: var(--muted); }

/* ---------- title block (drawing sheet) ---------- */
.titleblock {
    border: 2px solid var(--navy);
    background: var(--white);
    font-family: var(--mono);
}

.titleblock .tb-head {
    background: var(--navy);
    color: var(--white);
    padding: 12px 18px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    font-size: 11.5px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.tb-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }

.tb-cell {
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 16px 18px;
}

.tb-cell:nth-child(3n) { border-right: 0; }

.tb-cell dt {
    font-size: 10.5px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--steel);
    margin-bottom: 6px;
}

.tb-cell dd {
    margin: 0;
    font-family: var(--body);
    font-size: 1rem;
    color: var(--text);
}

.tb-cell dd a { font-weight: 600; }

.tb-foot {
    padding: 16px 18px;
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
}

/* ---------- forms ---------- */
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }

.field { display: flex; flex-direction: column; }
.field--wide { grid-column: 1 / -1; }

.field label {
    font-family: var(--mono);
    font-size: 11.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 7px;
}

.field input[type="text"],
.field input[type="email"],
.field select,
.field textarea {
    font-family: var(--body);
    font-size: 1rem;
    color: var(--text);
    background: var(--white);
    border: 1px solid #c3cad3;
    padding: 13px 14px;
    width: 100%;
}

.field textarea { min-height: 168px; resize: vertical; }

.field input:focus, .field select:focus, .field textarea:focus {
    border-color: var(--navy);
    outline: 3px solid rgba(44,99,180,.22);
    outline-offset: 0;
}

.hp { position: absolute; left: -5000px; width: 1px; height: 1px; overflow: hidden; }

.field-error {
    color: #b3261e;
    font-family: var(--mono);
    font-size: 11.5px;
    letter-spacing: 0.06em;
    margin-top: 6px;
    display: block;
}

.form-actions { display: flex; align-items: center; gap: 18px; margin-top: 26px; flex-wrap: wrap; }

.form-note { font-size: 0.9rem; color: var(--muted); margin: 0; }

.alert { padding: 18px 20px; border-left: 5px solid; margin-bottom: 28px; }
.alert p { margin: 0; }
.alert--ok { background: #eaf4ec; border-color: #2e7d43; }
.alert--bad { background: #fdeceb; border-color: #b3261e; }

.summary { background: #fdeceb; border-left: 5px solid #b3261e; padding: 16px 20px 16px 34px; margin-bottom: 26px; }
.summary ul { margin: 0; }

/* ---------- contact list ---------- */
.contact-list { list-style: none; margin: 0; padding: 0; }

.contact-list li { padding: 14px 0; border-bottom: 1px solid var(--line); }

.contact-list .k {
    display: block;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--steel);
    margin-bottom: 4px;
}

.map-frame { border: 1px solid var(--line); width: 100%; height: 320px; }

/* ---------- footer ---------- */
.footer {
    background: var(--navy-deep);
    color: #a9b6ca;
    padding: 62px 0 0;
    font-size: 0.95rem;
}

.footer h4 {
    color: var(--white);
    font-size: 12px;
    font-family: var(--mono);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.footer a { color: #a9b6ca; }
.footer a:hover { color: var(--safety); }

.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { padding: 5px 0; }

.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; }

.footer-mark {
    font-family: var(--display);
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--white);
    line-height: 1.05;
}

.footer-mark small {
    display: block;
    font-family: var(--mono);
    font-size: 10.5px;
    font-weight: 400;
    letter-spacing: 0.28em;
    color: var(--steel);
    margin-top: 6px;
}

.footer-base {
    margin-top: 52px;
    border-top: 1px solid rgba(255,255,255,.12);
    padding: 20px 0;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #77839a;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 26px;
    justify-content: space-between;
}

/* ---------- page header ---------- */
.page-head {
    background: var(--navy);
    color: #cdd8e9;
    padding: 66px 0 58px;
    position: relative;
    overflow: hidden;
}

.page-head::after {
    content: "";
    position: absolute; right: -60px; top: -40px;
    width: 320px; height: 200%;
    background: rgba(255,255,255,.06);
    clip-path: polygon(0 0, 46% 0, 100% 50%, 46% 100%, 0 100%, 54% 50%);
}

.page-head h1 { color: var(--white); margin-bottom: 12px; }
.page-head .eyebrow { color: var(--safety); }
.page-head p { max-width: 60ch; color: #b8c5da; margin: 0; position: relative; z-index: 2; }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    .card:hover { transform: none; }
    * { scroll-behavior: auto !important; }
}

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
    .hero .shell { grid-template-columns: minmax(0, 1fr); gap: 40px; }
    .grid--split { grid-template-columns: minmax(0, 1fr); gap: 40px; }
    .industries { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px; }
    .work { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
    body { font-size: 16px; }
    .band { padding: 60px 0; }

    .nav-toggle { display: block; }

    .nav {
        display: none;
        position: absolute;
        left: 0; right: 0; top: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: var(--white);
        border-bottom: 1px solid var(--line);
        padding: 8px 0 16px;
        box-shadow: 0 18px 24px rgba(14,33,72,.12);
    }

    .nav.is-open { display: flex; }

    .nav a { padding: 14px var(--gutter); border-bottom: 1px solid var(--line); border-left: 4px solid transparent; }
    .nav a:hover, .nav a.is-active { border-bottom-color: var(--line); border-left-color: var(--safety); }
    .nav .btn { margin: 14px var(--gutter) 0; text-align: center; border-left: 0; }

    .masthead .shell { position: relative; min-height: 72px; }
    .brand img { width: 186px; }

    .grid--2, .grid--3, .work { grid-template-columns: minmax(0, 1fr); }
    .tb-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .tb-cell:nth-child(3n) { border-right: 1px solid var(--line); }
    .tb-cell:nth-child(2n) { border-right: 0; }
    .form-grid { grid-template-columns: minmax(0, 1fr); }
    .topbar .shell { justify-content: flex-start; }
    .topbar .reg { display: none; }
}

@media (max-width: 560px) {
    .industries { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: minmax(0, 1fr); }
    .tb-grid { grid-template-columns: minmax(0, 1fr); }
    .tb-cell, .tb-cell:nth-child(3n), .tb-cell:nth-child(2n) { border-right: 0; }
    .person { grid-template-columns: minmax(0, 1fr); }
    .person .initials { width: 78px; }
}

/* ---------- print ---------- */
@media print {
    .topbar, .masthead, .footer, .hero .actions { display: none; }
    body { font-size: 12pt; }
    .band { padding: 18pt 0; }
}