/* TechsPassion Design (design.techspassion.com)
   Same brand as techspassion.com (logo, blue #0071c5, navy #0b1120, Inter + Orbitron): dark header and footer, light page,
   so it reads as a web design studio rather than the robotics channel. */

:root {
    --blue: #0071c5;
    --blue-dark: #005a9e;
    --blue-soft: #e6f1fb;
    --navy: #0b1120;
    --ink: #0f172a;
    --muted: #526077;
    --bg: #f5f7fb;
    --card: #ffffff;
    --line: #e3e8f0;
    --green: #16a34a;
    --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    --font-brand: "Orbitron", "Inter", system-ui, sans-serif;
    --radius: 14px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.6; font-size: 1rem; }
img, svg { display: block; max-width: 100%; }
a { color: var(--blue-dark); }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }
h1, h2, h3 { line-height: 1.2; font-weight: 700; letter-spacing: -0.01em; }
h2 { font-size: 1.9rem; margin-bottom: 10px; }
h3 { font-size: 1.15rem; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 22px; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { width: 1.2em; height: 1.2em; flex: none; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; vertical-align: -0.2em; }
[id] { scroll-margin-top: 84px; }
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    background: var(--blue); color: #fff; font-weight: 600; text-decoration: none; cursor: pointer;
    border: 2px solid var(--blue); border-radius: 999px; padding: 12px 24px; font: inherit; font-weight: 600;
    transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.btn:hover { background: var(--blue-dark); border-color: var(--blue-dark); text-decoration: none; transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--blue-dark); }
.btn-outline:hover { background: var(--blue-soft); border-color: var(--blue); color: var(--blue-dark); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(11, 17, 32, 0.96); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(255, 255, 255, 0.08); box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25); }
.site-header::before { content: ""; display: block; height: 4px; background: linear-gradient(90deg, var(--blue), #4da3ff); }
.site-header { transition: box-shadow 0.25s; }
.site-header.is-scrolled { box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35); }
.header-row { display: flex; align-items: center; gap: 18px; padding: 12px 22px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: #fff; }
.brand { transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); }
.brand:hover { text-decoration: none; transform: scale(1.04); text-shadow: 0 0 15px rgba(0, 113, 197, 0.4); }
.brand img { width: 40px; height: 40px; }
.brand-word { font-family: var(--font-brand); font-weight: 800; font-size: 1.15rem; letter-spacing: 0.02em; color: #fff; white-space: nowrap; }
.brand-word span { color: #4da3ff; }
.brand-tag { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: #fff; background: var(--blue); border-radius: 999px; padding: 4px 10px; }
.site-nav { margin-left: auto; display: flex; align-items: center; gap: 24px; }
.site-nav a { color: #e2e8f0; font-weight: 600; text-decoration: none; }
.site-nav a:hover { color: #fff; text-decoration: underline; }
.site-nav a[aria-current="true"] { color: #4da3ff; }
.site-nav .nav-cta { color: #fff; padding: 10px 20px; }
.site-nav .nav-cta:hover { text-decoration: none; }
.header-cta { display: none; }
.nav-toggle { display: none; }

/* Hero */
.hero { padding: 54px 0 64px; background: linear-gradient(180deg, #ffffff 0%, var(--bg) 100%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: 50px; align-items: center; }
.eyebrow { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--blue-dark); margin-bottom: 14px; }
.hero h1 { font-size: 3rem; margin-bottom: 18px; text-wrap: balance; }
.hero h1 span { color: var(--blue); }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 560px; text-wrap: pretty; }
.points { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 26px; color: var(--muted); font-size: 0.95rem; }
.points li { display: inline-flex; align-items: center; gap: 8px; }
.points .icon, .checks .icon { color: var(--green); }
.hero-art { width: 100%; max-width: 560px; justify-self: end; filter: drop-shadow(0 20px 30px rgba(11, 17, 32, 0.12)); }

/* Sections */
.section { padding: 64px 0; }
.section.alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-lead { color: var(--muted); max-width: 720px; margin-bottom: 30px; text-wrap: pretty; }
.checks { display: grid; gap: 10px; }
.checks li { display: flex; gap: 10px; align-items: flex-start; }
.checks .icon { margin-top: 4px; width: 1.1em; height: 1.1em; }
.two-col { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 40px; max-width: 980px; margin-top: 18px; }
.plain { display: grid; gap: 10px; padding-left: 1.2em; list-style: disc; color: var(--muted); }
.plain li { line-height: 1.55; text-wrap: pretty; }
.plain li::marker { color: var(--blue); }
.plain strong { color: var(--ink); }

/* Who it's for */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chips li { background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 9px 16px; font-weight: 600; font-size: 0.95rem; color: var(--ink); transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s; }
.chips li:hover { background: var(--blue); border-color: var(--blue); color: #fff; transform: translateY(-2px); }

/* Pricing */
.packages { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; align-items: stretch; margin-top: 10px; }
.package { position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 26px; display: flex; flex-direction: column; gap: 14px; box-shadow: 0 6px 24px rgba(11, 17, 32, 0.04); }
.package.featured { border-color: var(--blue); box-shadow: 0 12px 40px rgba(0, 113, 197, 0.14); }
.tag { position: absolute; top: -13px; left: 24px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: #fff; background: var(--blue); border-radius: 999px; padding: 4px 12px; }
.package h3 { font-size: 1.25rem; }
.price { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.price strong { font-size: 2rem; line-height: 1; color: var(--navy); }
.price span { color: var(--muted); font-size: 0.9rem; }
.package > p { color: var(--muted); text-wrap: pretty; }
.package .checks { font-size: 0.95rem; margin: 4px 0 6px; }
.package-note { font-size: 0.88rem; color: var(--muted); }
.package .btn { margin-top: auto; }
.fineprint { color: var(--muted); font-size: 0.85rem; margin-top: 22px; text-wrap: pretty; }
.costs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 56px; margin-top: 44px; max-width: 1000px; }
.costs h3 { margin-bottom: 12px; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; counter-reset: step; margin-top: 22px; }
.steps li { counter-increment: step; color: var(--muted); line-height: 1.55; text-wrap: pretty; }
.steps li::before { content: counter(step); display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 700; margin-bottom: 12px; }
.steps strong { color: var(--ink); display: block; margin-bottom: 4px; }

/* Work */
.work { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); gap: 24px; }
.work.live { margin-top: 24px; }
.work-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; text-decoration: none; color: var(--ink); transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s; }
.work-card:hover { transform: translateY(-5px); border-color: var(--blue); box-shadow: 0 14px 34px rgba(0, 113, 197, 0.14); text-decoration: none; }
.work-card img { width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; object-position: top; background: var(--bg); border-bottom: 1px solid var(--line); }
.work-body { padding: 20px 22px 24px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.work-body p { color: var(--muted); font-size: 0.93rem; text-wrap: pretty; }
.label { align-self: flex-start; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; border-radius: 999px; padding: 3px 10px; color: var(--muted); border: 1px solid var(--line); }
.label.is-live { color: var(--green); border-color: rgba(22, 163, 74, 0.4); }
.more { margin-top: auto; padding-top: 6px; color: var(--blue-dark); font-weight: 600; font-size: 0.92rem; display: inline-flex; align-items: center; gap: 6px; }

/* About */
.about { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 40px; align-items: start; }
.about p { color: var(--muted); margin-bottom: 14px; text-wrap: pretty; }
.about a { font-weight: 600; }

/* FAQ */
.faq { display: grid; gap: 12px; max-width: 860px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.faq details[open] { border-color: var(--blue); }
.faq summary { list-style: none; cursor: pointer; padding: 18px 54px 18px 22px; position: relative; font-weight: 600; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%); font-size: 1.4rem; color: var(--blue); }
.faq details[open] summary::after { content: "\2212"; }
.faq .answer { padding: 0 22px 20px; color: var(--muted); }

/* Quote form */
.quote-layout { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr); gap: 34px; align-items: start; }
.quote-form { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; display: grid; gap: 18px; grid-template-columns: repeat(2, minmax(0, 1fr)); box-shadow: 0 6px 24px rgba(11, 17, 32, 0.04); }
.field { display: grid; gap: 7px; align-content: start; }
.field.full { grid-column: 1 / -1; }
.field label { font-weight: 600; font-size: 0.92rem; }
.hint { color: var(--muted); font-size: 0.82rem; font-weight: 400; }
.req { color: var(--blue); }
.quote-form input, .quote-form select, .quote-form textarea { width: 100%; font: inherit; color: var(--ink); background: #fff; border: 1px solid #c3cddc; border-radius: 10px; padding: 12px 14px; transition: border-color 0.2s, box-shadow 0.2s; }
.quote-form select { appearance: none; -webkit-appearance: none; padding-right: 40px; background-image: linear-gradient(45deg, transparent 50%, #526077 50%), linear-gradient(135deg, #526077 50%, transparent 50%); background-position: calc(100% - 20px) 52%, calc(100% - 14px) 52%; background-size: 6px 6px, 6px 6px; background-repeat: no-repeat; }
.quote-form textarea { min-height: 150px; resize: vertical; }
.quote-form input:focus, .quote-form select:focus, .quote-form textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(0, 113, 197, 0.2); }
.quote-form [aria-invalid="true"] { border-color: #dc2626; }
.error { color: #b91c1c; font-size: 0.85rem; display: none; }
.field.has-error .error { display: block; }
.form-foot { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
.form-foot p { color: var(--muted); font-size: 0.85rem; max-width: 430px; text-wrap: pretty; }
.quote-form button[disabled] { opacity: 0.6; cursor: not-allowed; transform: none; }
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.status { grid-column: 1 / -1; display: none; padding: 16px 18px; border-radius: 10px; background: var(--blue-soft); border-left: 5px solid var(--blue); }
.status.is-shown { display: block; }
.status.is-ok { background: #ecfdf3; border-left-color: var(--green); }
.status.is-error { background: #fef2f2; border-left-color: #dc2626; }
.status p + p { margin-top: 8px; }
.copy-btn { margin-top: 10px; background: #fff; color: var(--ink); border: 1px solid #c3cddc; border-radius: 999px; padding: 7px 16px; font: inherit; font-size: 0.85rem; font-weight: 600; cursor: pointer; }
.copy-btn:hover { border-color: var(--blue); }
.quote-aside { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: grid; gap: 14px; align-content: start; }
.quote-aside ol { display: grid; gap: 10px; padding-left: 20px; list-style: decimal; color: var(--muted); font-size: 0.95rem; }
.quote-aside ol li::marker { color: var(--blue); font-weight: 700; }
.quote-aside p { color: var(--muted); font-size: 0.95rem; }
.quote-aside a { font-weight: 600; overflow-wrap: anywhere; }

/* Footer */
.site-footer { background: var(--navy); color: #cbd5e1; padding: 40px 0 34px; margin-top: 20px; }
.footer-row { display: grid; gap: 18px; }
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-brand .brand-word span { color: #4da3ff; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.footer-links a { color: #e2e8f0; font-weight: 600; text-decoration: none; padding: 4px 0; }
.footer-links a:hover { color: #fff; text-decoration: underline; }
.footer-legal { font-size: 0.85rem; color: #94a3b8; max-width: 860px; text-wrap: pretty; }

/* Back to top (appears after scrolling) */
.to-top { position: fixed; right: 18px; bottom: 18px; width: 44px; height: 44px; border-radius: 50%; background: var(--blue); color: #fff; display: grid; place-items: center; box-shadow: 0 10px 24px rgba(0, 113, 197, 0.35); opacity: 0; visibility: hidden; transform: translateY(10px); transition: opacity 0.25s, transform 0.25s, visibility 0.25s; z-index: 40; }
.to-top .icon { width: 22px; height: 22px; }
.to-top:hover { background: var(--blue-dark); text-decoration: none; }
.to-top.is-shown { opacity: 1; visibility: visible; transform: none; }

/* Reveal on scroll: starts hidden only when JavaScript has run (html.js) */
html.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s ease; }
html.js .reveal.is-visible { opacity: 1; transform: none; }

/* Legal page */
.legal { max-width: 820px; padding-top: 44px; padding-bottom: 64px; }
.legal h1 { font-size: 2.2rem; margin-bottom: 8px; }
.legal .updated { color: var(--muted); margin-bottom: 30px; }
.legal h2 { font-size: 1.4rem; margin: 34px 0 10px; }
.legal p, .legal li { color: var(--muted); margin-bottom: 12px; text-wrap: pretty; }
.legal ul { list-style: disc; padding-left: 1.3em; }
.legal strong { color: var(--ink); }

/* Responsive */
@media (max-width: 1000px) {
    .packages { grid-template-columns: 1fr; max-width: 560px; }
    .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
    .hero-grid { grid-template-columns: 1fr; gap: 34px; }
    .hero-art { justify-self: center; max-width: 460px; }
    .hero h1 { font-size: 2.4rem; }
    .about, .costs, .quote-layout { grid-template-columns: 1fr; }
    .two-col { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
    .section { padding: 44px 0; }
    .hero { padding: 30px 0 44px; }
    h2 { font-size: 1.6rem; }
    .header-row { gap: 10px; padding: 10px 16px; }
    .brand img { width: 34px; height: 34px; }
    .brand-word { font-size: 1rem; }
    .brand-tag { display: none; }
    .header-cta { display: inline-flex; margin-left: auto; padding: 9px 16px; font-size: 0.9rem; }
    .nav-toggle { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border: 1px solid rgba(255, 255, 255, 0.25); border-radius: 10px; background: transparent; color: #fff; cursor: pointer; }
    .nav-toggle .icon { width: 22px; height: 22px; }
    .nav-toggle .icon-close, .nav-open .nav-toggle .icon-open { display: none; }
    .nav-open .nav-toggle .icon-close { display: block; }
    .site-nav { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: stretch; gap: 0; background: var(--navy); border-bottom: 1px solid rgba(255, 255, 255, 0.08); box-shadow: 0 16px 30px rgba(11, 17, 32, 0.35); padding: 6px 16px 14px; margin: 0; }
    .nav-open .site-nav { display: flex; }
    .site-nav a { padding: 12px 6px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
    .site-nav .nav-cta { display: none; }
    .work-card:hover { transform: none; }
    .quote-form { grid-template-columns: 1fr; padding: 20px; }
    .steps { grid-template-columns: 1fr; gap: 18px; }
    .steps li::before { margin-bottom: 8px; }
    .btn-row .btn { width: 100%; }
}
@media (max-width: 600px) {
    .hero h1 { font-size: 1.95rem; }
    .lead { font-size: 1.05rem; }
    .wrap { padding: 0 16px; }
    .header-row { padding: 10px 16px; }
    .package { padding: 24px 20px; }
    .price strong { font-size: 1.7rem; }
}
@media (max-width: 400px) {
    .hero h1 { font-size: 1.7rem; }
    .header-cta { padding: 8px 12px; font-size: 0.85rem; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { transition: none !important; }
    .brand:hover { transform: none; }
    html.js .reveal { opacity: 1; transform: none; }
    .to-top { transform: none; }
}