/* ============================================
   VARVE - built on the mitchi.xyz Neo-Terminal
   design tokens (colours & fonts), toned down
   for a professional remote-sensing practice.
   ============================================ */
:root {
    --color-void: #0a0e27;
    --color-void-light: #10163a;
    --color-void-lighter: #1c2450;
    --color-line: rgba(148, 163, 211, 0.14);
    --color-cyan: #00f0ff;
    --color-cyan-soft: rgba(0, 240, 255, 0.12);
    --color-magenta: #ff006e;
    --color-green: #39ff14;
    --color-amber: #ffb000;
    --color-text-primary: #e8edff;
    --color-text-secondary: #a3b0da;
    --color-text-tertiary: #6b7bb0;
    --font-display: 'Space Mono', 'Courier New', monospace;
    --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --space-xs: 0.25rem; --space-sm: 0.5rem; --space-md: 1rem; --space-lg: 1.5rem;
    --space-xl: 2rem; --space-2xl: 3rem; --space-3xl: 4rem; --space-4xl: 5.5rem;
    --radius-sm: 4px; --radius-md: 8px; --radius-lg: 12px;
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --max: 1180px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-body); font-size: 17px; line-height: 1.65; color: var(--color-text-primary);
    background: var(--color-void); overflow-x: hidden; }
body::before { content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 0;
    background: radial-gradient(1200px 600px at 85% -10%, rgba(0,240,255,.07), transparent 60%); }
.grid-overlay, .scanlines-overlay { display: none; }
img { max-width: 100%; }
a { color: var(--color-cyan); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
*:focus-visible { outline: 2px solid var(--color-cyan); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; } }
main, footer, header { position: relative; z-index: 1; }

/* Navbar */
.navbar { position: sticky; top: 0; z-index: 100; padding: .9rem var(--space-xl);
    background: rgba(10,14,39,.86); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--color-line); }
.nav-container { max-width: var(--max); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: var(--space-lg); }
.logo { display: flex; align-items: center; gap: .6rem; font-family: var(--font-display); font-weight: 700; font-size: 1.1rem;
    letter-spacing: .14em; text-transform: uppercase; color: var(--color-text-primary); }
.logo:hover { text-decoration: none; }
.logo-mark { width: 22px; height: 22px; flex: none; }
.logo-icon { color: var(--color-cyan); }
.logo-sub { display: none; }
.nav-links { display: flex; align-items: center; gap: var(--space-xl); }
.nav-link { font-size: .92rem; font-weight: 500; color: var(--color-text-secondary); }
.nav-link:hover, .nav-link[aria-current="page"] { color: var(--color-text-primary); text-decoration: none; }
.nav-cta { padding: .5rem 1rem; border: 1px solid rgba(0,240,255,.5); border-radius: var(--radius-sm); color: var(--color-cyan); font-size: .88rem; font-weight: 600; }
.show-sm { display: none; }
.nav-cta:hover { background: var(--color-cyan-soft); text-decoration: none; }

/* Layout */
.section { max-width: var(--max); margin: 0 auto; padding: var(--space-4xl) var(--space-xl); }
.section + .section { border-top: 1px solid var(--color-line); }
.section-label { display: inline-block; font-family: var(--font-display); font-size: .74rem; color: var(--color-cyan);
    text-transform: uppercase; letter-spacing: .16em; margin-bottom: var(--space-md); }
.section-title { font-family: var(--font-body); font-weight: 600; font-size: clamp(1.6rem, 3vw, 2.3rem); line-height: 1.2;
    letter-spacing: -.015em; margin-bottom: var(--space-lg); max-width: 820px; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: var(--space-xl); margin-bottom: var(--space-2xl); flex-wrap: wrap; }
.section-head > div { flex: 1 1 520px; }
.section-head .section-title { margin-bottom: 0; }
.section-head .lead { margin-bottom: 0; max-width: 440px; flex: 0 1 440px; font-size: 1rem; }
.lead { font-size: 1.12rem; color: var(--color-text-secondary); max-width: 760px; margin-bottom: var(--space-xl); }
p + p { margin-top: var(--space-md); }
.muted { color: var(--color-text-secondary); }
.small { font-size: .875rem; }

/* Hero */
.hero { max-width: var(--max); margin: 0 auto; padding: var(--space-3xl) var(--space-xl) var(--space-3xl);
    display: grid; grid-template-columns: 1fr 1.08fr; gap: var(--space-3xl); align-items: center; }
.eyebrow { display: inline-block; font-family: var(--font-display); font-size: .74rem; letter-spacing: .16em; text-transform: uppercase;
    color: var(--color-cyan); margin-bottom: var(--space-lg); }
.hero-title { font-family: var(--font-body); font-weight: 600; font-size: clamp(2.1rem, 4.4vw, 3.3rem); line-height: 1.1;
    letter-spacing: -.025em; margin-bottom: var(--space-lg); }
.hero-title .accent { color: var(--color-cyan); }
.hero-subtitle { font-size: 1.15rem; color: var(--color-text-secondary); margin-bottom: var(--space-xl); max-width: 540px; }
.hero-cta { display: flex; gap: var(--space-md); flex-wrap: wrap; }
.hero-figure { position: relative; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--color-line);
    background: var(--color-void-light); box-shadow: 0 30px 80px -30px rgba(0,0,0,.7), 0 0 0 1px rgba(0,240,255,.06); }
.hero-figure img { display: block; width: 100%; height: auto; aspect-ratio: 1540 / 1138; object-fit: cover; }
.hero-figure figcaption { display: flex; justify-content: space-between; align-items: center; gap: var(--space-lg); flex-wrap: wrap;
    font-size: .8rem; color: var(--color-text-secondary); padding: .8rem 1rem; border-top: 1px solid var(--color-line); }
.legend { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--font-display); font-size: .68rem; color: var(--color-text-tertiary); white-space: nowrap; }
.legend-bar { width: 96px; height: 8px; border-radius: 2px; background: linear-gradient(90deg, #67001f, #d6604d, #fddbc7, #f7f7f7, #d1e5f0, #4393c3, #053061); }
.map-tag { position: absolute; top: 14px; left: 14px; font-family: var(--font-display); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase;
    background: rgba(10,14,39,.78); color: var(--color-text-primary); padding: .35rem .6rem; border-radius: var(--radius-sm); border: 1px solid var(--color-line); }

/* Facts strip */
.facts { max-width: var(--max); margin: 0 auto; padding: 0 var(--space-xl) var(--space-3xl); }
.facts-inner { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--color-line); border-radius: var(--radius-md); background: rgba(16,22,58,.6); }
.fact { padding: 1.2rem 1.4rem; }
.fact + .fact { border-left: 1px solid var(--color-line); }
.fact-value { font-family: var(--font-display); font-size: 1.05rem; color: var(--color-text-primary); }
.fact-label { font-size: .85rem; color: var(--color-text-secondary); }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: var(--space-sm); padding: .82rem 1.35rem; font-family: var(--font-body); font-size: .95rem; font-weight: 600;
    border: 1px solid transparent; border-radius: var(--radius-sm); transition: background var(--transition-base), border-color var(--transition-base), color var(--transition-base); cursor: pointer; }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--color-cyan); color: #04101f; border-color: var(--color-cyan); }
.btn-primary:hover { background: #6af6ff; border-color: #6af6ff; }
.btn-secondary { color: var(--color-text-primary); border-color: rgba(163,176,218,.4); }
.btn-secondary:hover { border-color: var(--color-text-primary); background: rgba(255,255,255,.04); }

/* Cards & grids */
.grid { display: grid; gap: var(--space-lg); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card { display: block; background: var(--color-void-light); border: 1px solid var(--color-line); border-radius: var(--radius-md); padding: var(--space-xl); transition: border-color var(--transition-base); color: inherit; }
a.card:hover { border-color: rgba(0,240,255,.45); text-decoration: none; }
.card h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.08rem; margin-bottom: var(--space-sm); color: var(--color-text-primary); }
.card .prefix { font-family: var(--font-display); color: var(--color-cyan); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; display: block; margin-bottom: var(--space-md); }
.card p { color: var(--color-text-secondary); font-size: .96rem; }
.card .format { margin-top: var(--space-md); font-family: var(--font-display); font-size: .72rem; color: var(--color-text-tertiary); }
.icon { width: 36px; height: 36px; margin-bottom: var(--space-lg); color: var(--color-cyan); }

/* Use cases */
.uses { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; border-top: 1px solid var(--color-line); }
.use { padding: var(--space-xl) var(--space-xl) var(--space-xl) 0; border-bottom: 1px solid var(--color-line); display: grid; grid-template-columns: 2.4rem 1fr; gap: var(--space-md); }
.use:nth-child(even) { padding-left: var(--space-xl); border-left: 1px solid var(--color-line); }
.use-num { font-family: var(--font-display); font-size: .8rem; color: var(--color-text-tertiary); padding-top: .2rem; }
.use h3 { font-weight: 600; font-size: 1.08rem; margin-bottom: .3rem; }
.use p { color: var(--color-text-secondary); font-size: .96rem; }

/* Stats (case-study pages) */
.stat { border-left: 2px solid var(--color-cyan); padding: var(--space-sm) var(--space-lg); }
.stat-value { font-family: var(--font-display); font-size: 1.5rem; color: var(--color-text-primary); line-height: 1.2; }
.stat-label { font-size: .85rem; color: var(--color-text-secondary); }

/* Steps */
.steps { list-style: none; counter-reset: step; display: grid; gap: var(--space-lg); }
.steps.steps-3 { grid-template-columns: repeat(3, 1fr); }
.steps li { counter-increment: step; position: relative; padding: var(--space-xl); background: var(--color-void-light); border: 1px solid var(--color-line); border-radius: var(--radius-md); }
.steps li::before { content: counter(step, decimal-leading-zero); display: block; font-family: var(--font-display); font-size: .8rem; color: var(--color-cyan); margin-bottom: var(--space-md); }
.steps strong { font-weight: 600; font-size: 1.08rem; }
.steps p { color: var(--color-text-secondary); font-size: .96rem; margin-top: var(--space-sm); }

/* Notice / callouts */
.notice { border: 1px solid rgba(255,176,0,.45); background: rgba(255,176,0,.05); border-radius: var(--radius-md); padding: var(--space-lg) var(--space-xl); margin: var(--space-xl) 0; }
.notice strong { color: var(--color-amber); font-family: var(--font-display); font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; }
.notice p { color: var(--color-text-primary); }
.note { display: grid; grid-template-columns: 1fr auto; gap: var(--space-xl); align-items: center; padding: var(--space-xl); border: 1px solid var(--color-line); border-radius: var(--radius-md); background: rgba(16,22,58,.5); margin-top: var(--space-2xl); }
.note p { color: var(--color-text-secondary); font-size: .96rem; }
.note strong { color: var(--color-text-primary); }

/* Case-study teaser */
.feature { display: grid; grid-template-columns: 1.1fr 1fr; gap: var(--space-2xl); align-items: center; }
.feature-fig img { display: block; width: 100%; height: auto; border-radius: var(--radius-md); border: 1px solid var(--color-line); }
.feature-fig figcaption { font-size: .8rem; color: var(--color-text-tertiary); margin-top: .6rem; }
.feature .kv { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); margin: var(--space-lg) 0 var(--space-xl); }
.kv div { border-top: 1px solid var(--color-line); padding-top: .6rem; }
.kv b { display: block; font-family: var(--font-display); font-weight: 400; font-size: 1.15rem; color: var(--color-text-primary); }
.kv span { font-size: .82rem; color: var(--color-text-secondary); }

/* Figures */
figure.fig { margin: var(--space-xl) 0; background: var(--color-void-light); border: 1px solid var(--color-line); border-radius: var(--radius-md); overflow: hidden; }
figure.fig img { display: block; width: 100%; height: auto; background: #fff; }
figure.fig figcaption { padding: var(--space-md) var(--space-lg); font-size: .875rem; color: var(--color-text-secondary); }

/* Tables */
.table-wrap { overflow-x: auto; margin: var(--space-xl) 0; border: 1px solid var(--color-line); border-radius: var(--radius-md); }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { padding: .7rem 1rem; text-align: left; border-bottom: 1px solid var(--color-line); vertical-align: top; }
th { font-family: var(--font-display); font-weight: 400; font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: var(--color-text-tertiary); background: var(--color-void-light); }
td.num { font-family: var(--font-display); white-space: nowrap; }
tr.hl td { background: rgba(0,240,255,.04); }
.tag { display: inline-block; font-family: var(--font-display); font-size: .66rem; padding: .05rem .45rem; border: 1px solid; border-radius: 3px; text-transform: uppercase; letter-spacing: .05em; }
.tag-cand { color: #ff4d94; border-color: rgba(255,0,110,.6); }
.tag-noise { color: var(--color-text-tertiary); border-color: var(--color-text-tertiary); }
.tag-ref { color: #7dff63; border-color: rgba(57,255,20,.5); }

/* Lists */
.list { padding-left: 1.2rem; color: var(--color-text-secondary); }
.list li { margin: .5rem 0; }
.list li strong { color: var(--color-text-primary); }
ol.list { padding-left: 1.4rem; }
dl.spec { display: grid; grid-template-columns: max-content 1fr; gap: .55rem 1.5rem; font-size: .95rem; }
dl.spec dt { font-family: var(--font-display); font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; color: var(--color-text-tertiary); padding-top: .15rem; }
dl.spec dd { color: var(--color-text-secondary); }

/* Contact */
.contact-box { position: relative; overflow: hidden; background: linear-gradient(135deg, #111a46 0%, #0d1335 60%); border: 1px solid var(--color-line); border-radius: var(--radius-lg); padding: var(--space-3xl) var(--space-2xl); text-align: center; }
.contact-box .section-title { margin-left: auto; margin-right: auto; }
.contact-box .lead { margin-left: auto; margin-right: auto; }
.contact-email { display: inline-block; font-family: var(--font-display); font-size: clamp(1.15rem, 3vw, 1.6rem); color: var(--color-cyan); margin: var(--space-sm) 0 var(--space-lg); }
.contact-sig { font-size: .9rem; color: var(--color-text-tertiary); margin-top: var(--space-lg); }

/* Footer */
.footer { border-top: 1px solid var(--color-line); padding: var(--space-2xl) var(--space-xl); }
.footer-container { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md) var(--space-2xl); font-size: .82rem; color: var(--color-text-tertiary); }
.footer-container p + p { margin-top: 0; }
.footer a { color: var(--color-text-secondary); }
.footer .muted { color: var(--color-text-tertiary); }

.breadcrumb { font-family: var(--font-display); font-size: .74rem; color: var(--color-text-tertiary); margin-bottom: var(--space-lg); }

@media (max-width: 960px) {
    .hero { grid-template-columns: 1fr; gap: var(--space-2xl); padding-top: var(--space-2xl); }
    .grid-3, .grid-4, .steps.steps-3 { grid-template-columns: 1fr 1fr; }
    .facts-inner { grid-template-columns: 1fr 1fr; }
    .fact:nth-child(3) { border-left: 0; }
    .fact:nth-child(n+3) { border-top: 1px solid var(--color-line); }
    .feature { grid-template-columns: 1fr; }
    .nav-links .nav-link { display: none; }
}
@media (max-width: 640px) {
    body { font-size: 16px; }
    .section, .hero, .facts { padding-left: 1.15rem; padding-right: 1.15rem; }
    .section { padding-top: var(--space-3xl); padding-bottom: var(--space-3xl); }
    .grid-2, .grid-3, .grid-4, .steps.steps-3, .uses { grid-template-columns: 1fr; }
    .use, .use:nth-child(even) { padding: var(--space-lg) 0; border-left: 0; }
    .navbar { padding: .75rem 1.15rem; }
    .hero-cta .btn { width: 100%; justify-content: center; }
    .note { grid-template-columns: 1fr; }
    .feature .kv { grid-template-columns: repeat(3, 1fr); }
    dl.spec { grid-template-columns: 1fr; gap: .1rem; }
    dl.spec dd { margin-bottom: .6rem; }
    .contact-box { padding: var(--space-2xl) var(--space-lg); }
    .footer-container { grid-template-columns: 1fr; }
    .card { padding: var(--space-lg); }
    .icon { margin-bottom: var(--space-md); width: 30px; height: 30px; }
    .hide-sm { display: none; }
    .show-sm { display: inline; }
    .feature-fig { order: 2; }
    .hero-title { font-size: 2.05rem; }
}

/* Collapsible technical details */
details.tech { border: 1px solid var(--color-border, rgba(163,176,218,.18)); border-radius: 10px; padding: 1rem 1.25rem; background: rgba(16,22,58,.5); }
details.tech summary { cursor: pointer; font-weight: 600; color: var(--color-text-secondary); }
details.tech[open] summary { margin-bottom: 1rem; }
@media (max-width: 640px) {
    th, td { padding: .6rem .55rem; }
    table { font-size: .85rem; }
    td .tag { display: inline-block; margin-bottom: .25rem; }
}