/* RoboStream — The Current design system */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@500&family=Fraunces:opsz,wght@9..144,500;9..144,600&family=Source+Sans+3:wght@400;600&display=swap');

:root {
    --sandstone: #F2EBE0;
    --drift: #E8E0D4;
    --river-ink: #1A2332;
    --stream-blue: #2B6CB0;
    --amber-pulse: #E8943A;
    --warm-grey: #7A756E;
    --ink-80: rgba(26, 35, 50, 0.8);
    --ink-60: rgba(26, 35, 50, 0.6);
    --sandstone-85: rgba(242, 235, 224, 0.85);
    --max-width: 1200px;
    --narrow: 720px;
    --section-pad: clamp(3.5rem, 8vw, 8rem);
    --font-display: 'Fraunces', Georgia, serif;
    --font-body: 'Source Sans 3', system-ui, sans-serif;
    --font-mono: 'Fira Code', ui-monospace, monospace;
    --radius: 4px;
    --shadow-soft: 0 12px 40px rgba(26, 35, 50, 0.08);
    --shadow-plate: 0 20px 60px rgba(26, 35, 50, 0.12);
    --transition: 0.25s ease;
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 1.0625rem;
    line-height: 1.65;
    color: var(--river-ink);
    background: var(--sandstone);
}

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

a {
    color: currentColor;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.18em;
}

a:hover { text-decoration-thickness: 2px; }

h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.15;
    margin: 0 0 1rem;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); font-weight: 500; }

p { margin: 0 0 1.25rem; }

ul, ol { margin: 0 0 1.25rem; padding-left: 1.4rem; }

/* Surface system — paired bg + text only */
.surface-sandstone { background-color: var(--sandstone); color: var(--river-ink); }
.surface-ink { background-color: var(--river-ink); color: var(--sandstone); }
.surface-drift { background-color: var(--drift); color: var(--river-ink); }
.surface-blue { background-color: var(--stream-blue); color: var(--sandstone); }

.surface-sandstone a:focus-visible,
.surface-drift a:focus-visible {
    outline: 2px solid var(--stream-blue);
    outline-offset: 3px;
}

.surface-ink a:focus-visible,
.surface-blue a:focus-visible {
    outline: 2px solid var(--sandstone);
    outline-offset: 3px;
}

/* Telemetry grid texture on light surfaces */
.surface-sandstone.has-grid,
.surface-drift.has-grid {
    background-image:
        linear-gradient(rgba(26, 35, 50, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(26, 35, 50, 0.03) 1px, transparent 1px);
    background-size: 24px 24px;
}

.container {
    width: min(100% - 2.5rem, var(--max-width));
    margin-inline: auto;
}

.narrow { max-width: var(--narrow); }

.eyebrow {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--stream-blue);
    margin-bottom: 1rem;
}

.surface-ink .eyebrow { color: var(--amber-pulse); }

.text-accent { color: var(--stream-blue); }
.text-amber { color: var(--amber-pulse); }

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 0;
    transition: background-color var(--transition), box-shadow var(--transition), color var(--transition);
}

.site-header.is-sticky,
.site-header--solid {
    background-color: var(--river-ink);
    color: var(--sandstone);
    box-shadow: var(--shadow-soft);
}

.header-inner {
    width: min(100% - 2.5rem, var(--max-width));
    margin-inline: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 600;
    text-decoration: none;
    letter-spacing: -0.02em;
}

.primary-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 1.5rem;
}

.primary-nav a {
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    padding: 0.35rem 0;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
    text-decoration: underline;
    text-underline-offset: 0.25em;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid currentColor;
    background: transparent;
    cursor: pointer;
    border-radius: var(--radius);
}

.nav-toggle-bar {
    display: block;
    width: 20px;
    height: 2px;
    background: currentColor;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .primary-nav {
        position: fixed;
        top: 0;
        right: 0;
        width: min(85vw, 320px);
        height: 100vh;
        background: var(--river-ink);
        color: var(--sandstone);
        padding: 5rem 2rem 2rem;
        transform: translateX(100%);
        transition: transform var(--transition);
        box-shadow: -8px 0 32px rgba(0,0,0,0.2);
    }
    .primary-nav.is-open { transform: translateX(0); }
    .primary-nav ul { flex-direction: column; gap: 1rem; }
    body.nav-open { overflow: hidden; }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.6rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: filter var(--transition), box-shadow var(--transition), transform var(--transition);
}

.btn:hover {
    filter: brightness(1.06);
    box-shadow: var(--shadow-soft);
}

.btn-primary {
    background-color: var(--stream-blue);
    color: var(--sandstone);
    border-color: var(--stream-blue);
}

.btn-secondary {
    background: transparent;
    color: currentColor;
    border-color: currentColor;
}

.surface-ink .btn-secondary { color: var(--sandstone); }

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

/* Sections */
.section { padding: var(--section-pad) 0; }

.section-header {
    margin-bottom: 3rem;
    max-width: 42rem;
}

.section-header.centered {
    text-align: center;
    margin-inline: auto;
}

/* Hero — THE FEED */
.hero-feed {
    min-height: 92vh;
    padding-top: 6rem;
    padding-bottom: 3rem;
    display: flex;
    flex-direction: column;
}

.hero-top-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.5rem 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--river-ink);
    margin-bottom: 2.5rem;
    position: relative;
}

.hero-top-row::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--stream-blue);
}

.hero-top-row::before {
    content: '';
    position: absolute;
    bottom: -3px;
    right: 0;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--stream-blue);
}

.hero-brand {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.14em;
}

.hero-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    color: var(--warm-grey);
}

.hero-headline {
    max-width: 18ch;
    margin-bottom: 1.5rem;
}

.hero-stream-band {
    display: flex;
    align-items: center;
    gap: 0;
    margin-bottom: 2.5rem;
    position: relative;
    padding-bottom: 1.5rem;
}

.hero-stream-band::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--stream-blue) 0%, var(--stream-blue) 100%);
}

.stream-stage {
    flex: 1;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--stream-blue);
    position: relative;
}

.stream-stage::before {
    content: '';
    position: absolute;
    bottom: -1.35rem;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--stream-blue);
    border: 2px solid var(--sandstone);
}

.hero-plate {
    position: relative;
    margin-bottom: 2.5rem;
    border: 1px solid var(--river-ink);
    box-shadow: var(--shadow-plate);
    overflow: hidden;
}

.hero-plate::before,
.hero-plate::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    border: 2px solid var(--stream-blue);
    z-index: 2;
}

.hero-plate::before { top: 8px; left: 8px; border-right: none; border-bottom: none; }
.hero-plate::after { bottom: 8px; right: 8px; border-left: none; border-top: none; }

.hero-plate img { width: 100%; aspect-ratio: 21/9; object-fit: cover; }

.hero-plate-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(43, 108, 176, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(43, 108, 176, 0.04) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
}

.hero-standfirst {
    max-width: 560px;
    font-size: 1.125rem;
    color: var(--ink-80);
    margin-bottom: 0;
}

.hero-trust {
    margin-top: auto;
    padding-top: 2rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--warm-grey);
    letter-spacing: 0.06em;
}

@media (max-width: 768px) {
    .hero-feed { min-height: 80vh; padding-top: 5rem; }
    .stream-stage { font-size: 0.6rem; }
}

/* Cards & grids */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.75rem;
}

.card {
    padding: 2rem;
    border: 1px solid rgba(26, 35, 50, 0.12);
    background: var(--sandstone);
    position: relative;
}

.surface-drift .card { background: var(--drift); }

.card-framed {
    border: 1px solid var(--river-ink);
    box-shadow: var(--shadow-soft);
}

.card-framed::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 6px;
    width: 8px;
    height: 8px;
    border-top: 2px solid var(--stream-blue);
    border-left: 2px solid var(--stream-blue);
}

.channel-num {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--warm-grey);
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

/* Metrics */
.metric-trio {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    text-align: center;
}

.metric-value {
    font-family: var(--font-mono);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 500;
    color: var(--stream-blue);
    display: block;
    margin-bottom: 0.35rem;
}

.surface-ink .metric-value { color: var(--amber-pulse); }

.metric-label {
    font-size: 0.875rem;
    color: var(--ink-60);
}

.surface-ink .metric-label { color: var(--sandstone-85); }

@media (max-width: 600px) {
    .metric-trio { grid-template-columns: 1fr; gap: 1.5rem; }
}

/* Stage pipeline */
.stage-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.stage-item h3 {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--stream-blue);
}

@media (max-width: 768px) {
    .stage-row { grid-template-columns: 1fr 1fr; }
}

/* Channel rail capabilities */
.channel-rail {
    border-left: 3px solid var(--stream-blue);
    padding-left: 1.5rem;
}

.capability-item {
    padding: 1.25rem 0;
    border-bottom: 1px solid rgba(26, 35, 50, 0.1);
}

.capability-item:last-child { border-bottom: none; }

/* Work cases */
.case-study {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: start;
    margin-bottom: 3rem;
}

.case-study:nth-child(even) .case-image { order: 2; }

@media (max-width: 768px) {
    .case-study { grid-template-columns: 1fr; }
    .case-study:nth-child(even) .case-image { order: 0; }
}

.case-image img {
    border: 1px solid rgba(26, 35, 50, 0.15);
    box-shadow: var(--shadow-soft);
}

.case-tag {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--amber-pulse);
    margin-bottom: 0.5rem;
}

/* FAQ */
.faq-list { max-width: 48rem; }

.faq-item {
    border-bottom: 1px solid rgba(26, 35, 50, 0.12);
    padding: 1.5rem 0;
}

.faq-item:first-child { padding-top: 0; }

.faq-question {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

/* Forms */
.contact-layout {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.contact-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: start;
}

.contact-details .photo-block {
    margin: 0;
}

@media (max-width: 768px) {
    .contact-details {
        grid-template-columns: 1fr;
    }
}

.form-section {
    max-width: 36rem;
    width: 100%;
    margin-inline: auto;
}

.contact-form {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    padding: 1.75rem;
    background: #fff;
    border: 1px solid rgba(26, 35, 50, 0.12);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
}

.contact-form > .form-group {
    width: 100%;
}

.form-group { margin-bottom: 1.25rem; }

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.4rem;
    font-size: 0.9375rem;
}

.form-group input:not([type="checkbox"]):not([type="radio"]),
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    border: 1px solid rgba(26, 35, 50, 0.25);
    border-radius: var(--radius);
    background: #fff;
    color: var(--river-ink);
    box-sizing: border-box;
}

.form-group textarea { min-height: 140px; resize: vertical; }

.form-group input:not([type="checkbox"]):not([type="radio"]):focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: 2px solid var(--stream-blue);
    outline-offset: 2px;
    border-color: var(--stream-blue);
}

.form-actions {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 1.25rem;
    width: 100%;
    margin-top: 0.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid rgba(26, 35, 50, 0.1);
}

.form-check {
    display: grid;
    grid-template-columns: 1.125rem 1fr;
    gap: 0.75rem;
    align-items: start;
    width: 100%;
    font-size: 0.875rem;
    line-height: 1.5;
}

.form-check input[type="checkbox"] {
    width: 1.125rem;
    height: 1.125rem;
    margin: 0.2rem 0 0;
    flex-shrink: 0;
}

.form-check label {
    display: block;
    min-width: 0;
    font-weight: 400;
}

.contact-form .btn-primary {
    align-self: flex-start;
}

.hp-field {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* Photo blocks */
.photo-block { margin: 2rem 0; }

.photo-block img {
    border: 1px solid rgba(26, 35, 50, 0.12);
    box-shadow: var(--shadow-soft);
}

.photo-caption {
    font-size: 0.875rem;
    color: var(--warm-grey);
    margin-top: 0.5rem;
    font-family: var(--font-mono);
}

/* Page hero (inner pages) */
.page-hero {
    padding-top: calc(var(--section-pad) + 4rem);
    padding-bottom: var(--section-pad);
}

.page-hero h1 { margin-bottom: 1.25rem; }

/* Legal prose */
.legal-prose h2 {
    margin-top: 2.5rem;
    font-size: 1.35rem;
}

.legal-prose h3 {
    margin-top: 1.75rem;
    font-size: 1.1rem;
}

.legal-prose ul { margin-bottom: 1.25rem; }

/* Footer */
.site-footer {
    padding: 3.5rem 0 2rem;
    font-size: 0.9375rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (max-width: 600px) {
    .footer-grid { grid-template-columns: 1fr; }
}

.footer-brand {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.footer-label {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    color: var(--sandstone-85);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li { margin-bottom: 0.4rem; }

.footer-links a { text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }

.footer-meta,
.footer-hosting,
.footer-disclaimer,
.footer-copy {
    font-size: 0.8125rem;
    color: var(--sandstone-85);
    line-height: 1.6;
}

.footer-disclaimer {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(242, 235, 224, 0.15);
}

/* Cookie banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 200;
    padding: 1.25rem;
    background: var(--river-ink);
    color: var(--sandstone);
    box-shadow: 0 -8px 32px rgba(0,0,0,0.2);
}

.cookie-banner[hidden] { display: none; }

.cookie-inner {
    width: min(100%, var(--max-width));
    margin-inline: auto;
}

.cookie-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

.cookie-customise-panel {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(242, 235, 224, 0.2);
}

.cookie-customise-panel[hidden] { display: none; }

.cookie-customise-panel label {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

/* Stream draw animation */
.stream-draw {
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    transition: stroke-dashoffset 1.2s ease;
}

.stream-draw.is-drawn { stroke-dashoffset: 0; }

/* Reveal — JS only, safety timeout in main.js */
.js .reveal {
    opacity: 1;
    transform: translateY(16px);
    transition: transform 0.6s ease, opacity 0.6s ease;
}

.js .reveal.is-visible {
    transform: translateY(0);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .js .reveal { transform: none; }
    .stream-draw { stroke-dashoffset: 0; }
}

/* CTA band */
.cta-band {
    text-align: center;
    padding: var(--section-pad) 0;
}

.cta-band h2 { margin-bottom: 1rem; }

.cta-band p {
    max-width: 36rem;
    margin-inline: auto;
    margin-bottom: 2rem;
}

/* Service pricing */
.price-range {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--stream-blue);
    margin-top: 0.75rem;
}

.surface-ink .price-range { color: var(--amber-pulse); }

/* Disclaimer box */
.disclaimer-box {
    padding: 1.5rem;
    border-left: 3px solid var(--amber-pulse);
    background: rgba(232, 148, 58, 0.08);
    font-size: 0.9375rem;
    margin: 2rem 0;
}

.surface-ink .disclaimer-box {
    background: rgba(242, 235, 224, 0.06);
    border-left-color: var(--amber-pulse);
}

/* 404 */
.error-code {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    color: var(--warm-grey);
}

/* Split content + image */
.split-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.split-section > * {
    min-width: 0;
}

@media (max-width: 768px) {
    .split-section { grid-template-columns: 1fr; }
}