/* Gridly theme — Midnight Dashboard (concept C), zero-JS-critical, mobile-first */
:root {
  color-scheme: dark;
  --bg: #0b1220;
  --bg-soft: #131c2e;
  --bg-card: #131c2e;
  --bg-deep: #090e19;
  --panel: #0e1526;
  --text: #e6edf7;
  --muted: #93a4bd;
  --line: #223047;
  --line-soft: #1b2740;
  --accent: #38bdf8;
  --accent-dark: #7dd3fc;
  --accent-soft: #0e2a3f;
  --on-accent: #04121f;
  --donate: #a3e635;
  --donate-dark: #bef264;
  --donate-ink: #14210a;
  --warn: #f59e0b;
  --warn-soft: #241a0e;
  --warn-line: #4a3a1c;
  --warn-text: #f0d9b5;
  --ok: #4ade80;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 18px 40px -26px rgba(56, 189, 248, .45);
  --font: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --container: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; color-scheme: dark; }
body {
  margin: 0;
  font: 17px/1.65 var(--font);
  color: var(--text);
  background-color: var(--bg);
  /* spreadsheet cell grid — фирменный фон Midnight */
  background-image:
    linear-gradient(rgba(34, 48, 71, .35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 48, 71, .35) 1px, transparent 1px);
  background-size: 36px 36px;
}
::selection { background: var(--accent); color: var(--on-accent); }
img, svg { max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent-dark); }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.02em; font-weight: 800; }
h1 { font-size: clamp(1.85rem, 4.5vw, 2.9rem); margin: .4em 0 .5em; }
h2 { font-size: clamp(1.35rem, 3vw, 1.9rem); margin: 2.2em 0 .6em; }
h3 { font-size: 1.13rem; margin: 1.4em 0 .4em; letter-spacing: -.01em; }
p { margin: .8em 0; }
code { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 6px; padding: .1em .35em; font-size: .9em; font-family: var(--mono); }
pre { background: var(--panel); color: #cfe6f7; border: 1px solid var(--line); padding: 14px 16px; border-radius: 12px; overflow-x: auto; }
pre code { background: none; border: 0; color: inherit; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 12px; top: 12px; background: var(--bg-soft); color: var(--text); padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; z-index: 50; }

/* header */
.site-header { border-bottom: 1px solid var(--line); background: rgba(11, 18, 32, .92); position: sticky; top: 0; z-index: 40; backdrop-filter: blur(10px); }
.header-inner { display: flex; align-items: center; gap: 18px; min-height: 64px; flex-wrap: wrap; }
.brand { font-weight: 800; text-decoration: none; color: var(--text); font-size: 1.18rem; display: flex; align-items: center; gap: 9px; letter-spacing: -.02em; }
.brand-mark { color: var(--accent); font-size: 1.32rem; text-shadow: 0 0 18px rgba(56, 189, 248, .55); }
#site-nav { margin-left: auto; }
#site-nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
#site-nav a { display: inline-block; padding: 8px 11px; border-radius: 10px; text-decoration: none; color: var(--text); font-weight: 500; font-size: .98rem; }
#site-nav a:hover { background: var(--bg-soft); color: var(--accent); }
.lang-switch { margin-left: 12px; font-weight: 700; text-decoration: none; border: 1px solid var(--line); border-radius: 10px; padding: 6px 10px; font-size: .85rem; color: var(--text); }
.lang-switch:hover { border-color: var(--accent); color: var(--accent); }
.nav-toggle { display: none; margin-left: auto; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; font: inherit; font-size: .9rem; cursor: pointer; color: var(--text); }

@media (max-width: 860px) {
  .nav-toggle { display: inline-block; }
  #site-nav { display: none; width: 100%; margin-left: 0; }
  #site-nav.open { display: block; padding-bottom: 10px; }
  #site-nav ul { flex-direction: column; }
  #site-nav a { display: block; }
  .lang-switch { margin: 6px 0 0; display: inline-block; }
}

/* breadcrumbs */
.breadcrumbs { font-size: .88rem; color: var(--muted); margin: 18px 0 4px; }
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs .sep { margin: 0 7px; color: #3b4a63; }

/* hero */
.hero { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; padding: 48px 0 28px; position: relative; }
/* мягкое свечение + сетка клеток вокруг героя */
.hero::before {
  content: ""; position: absolute; inset: -8px -24px -8px; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(34, 48, 71, .8) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 48, 71, .8) 1px, transparent 1px);
  background-size: 36px 36px; opacity: .55;
  -webkit-mask-image: radial-gradient(ellipse 70% 75% at 62% 40%, #000 5%, transparent 72%);
  mask-image: radial-gradient(ellipse 70% 75% at 62% 40%, #000 5%, transparent 72%);
}
.hero::after {
  content: ""; position: absolute; inset: -8px -24px -8px; pointer-events: none; z-index: 0;
  background: radial-gradient(ellipse 46% 60% at 78% 38%, rgba(56, 189, 248, .14), transparent 70%);
}
.hero > * { position: relative; z-index: 1; }
.hero--template { padding-top: 26px; }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; padding-top: 26px; } }
.eyebrow { display: inline-block; background: var(--accent-soft); color: var(--accent); border: 1px solid #1e4258; font-weight: 600; font-size: .85rem; padding: 5px 12px; border-radius: 999px; margin: 0 0 10px; }
.lead { font-size: 1.14rem; color: var(--muted); }
.section-lead { color: var(--muted); max-width: 700px; }
.hero-visual .dash { display: block; width: 100%; border-radius: var(--radius); box-shadow: var(--shadow); }

/* buttons */
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 18px 0 8px; }
.btn { display: inline-block; padding: 13px 22px; border-radius: 12px; font-weight: 700; text-decoration: none; border: 1.5px solid transparent; font-size: 1rem; text-align: center; transition: transform .12s ease, box-shadow .12s ease, background .12s ease; }
.btn--primary { background: var(--accent); color: var(--on-accent); box-shadow: 0 8px 26px -12px rgba(56, 189, 248, .8); }
.btn--primary:hover { background: var(--accent-dark); color: var(--on-accent); transform: translateY(-1px); }
.btn--ghost { border-color: var(--line); color: var(--text); background: var(--bg-card); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.btn--donate { background: var(--donate); color: var(--donate-ink); box-shadow: 0 8px 26px -12px rgba(163, 230, 53, .7); }
.btn--donate:hover { background: var(--donate-dark); color: var(--donate-ink); }
.btn--sm { padding: 9px 16px; font-size: .9rem; }

.badge-row, .badge-row ul { display: flex; gap: 8px; list-style: none; padding: 0; margin: 14px 0 0; flex-wrap: wrap; }
.badge { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; font-size: .84rem; font-weight: 600; color: var(--muted); font-family: var(--mono); }
.badge--sm { font-size: .78rem; padding: 3px 10px; }
.badge--ad { background: var(--warn-soft); border-color: var(--warn-line); color: var(--warn); }

/* cards */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; margin: 20px 0; }
.card-grid--2 { grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); }
.card { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); margin: 0; position: relative; }
.card h3 { margin-top: 0; }
.card p { color: var(--muted); font-size: .97rem; }
.card--accent { background: linear-gradient(180deg, var(--accent-soft), var(--bg-card)); }
.card--link { text-decoration: none; color: inherit; transition: transform .12s ease, border-color .12s ease, box-shadow .12s ease; display: block; }
.card--link:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 1px 2px rgba(0,0,0,.4), 0 22px 44px -26px rgba(56, 189, 248, .7); }
.card--link h3 { color: var(--accent); }
.card--link:hover h3 { color: var(--accent-dark); }
.more-link { margin-top: 10px; font-weight: 600; }

/* pains */
.pain-list { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.pain-list li { display: flex; gap: 12px; background: var(--warn-soft); border: 1px solid var(--warn-line); border-radius: var(--radius); padding: 16px; align-items: flex-start; color: var(--warn-text); font-size: .97rem; }
.pain-ico { flex: 0 0 auto; width: 26px; height: 26px; border-radius: 50%; background: var(--warn); color: #2a1a02; font-weight: 800; display: grid; place-items: center; font-size: .9rem; }

/* steps */
.steps { list-style: none; padding: 0; margin: 18px 0; counter-reset: step; }
.steps li { display: flex; gap: 16px; margin-bottom: 14px; align-items: flex-start; }
.steps p { margin: 0; }
.step-num { flex: 0 0 auto; width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: var(--on-accent); font-weight: 800; display: grid; place-items: center; box-shadow: 0 0 20px -6px rgba(56, 189, 248, .9); }
.steps--compact { counter-reset: none; max-width: 760px; }

/* kit */
.kit-list { list-style: none; padding: 0; display: grid; gap: 10px; max-width: 720px; }
.kit-list li { padding-left: 30px; position: relative; }
.kit-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--ok); font-weight: 800; }

/* faq */
.faq-item { border: 1px solid var(--line); border-radius: var(--radius); padding: 0; margin-bottom: 12px; background: var(--bg-card); }
.faq-item summary { cursor: pointer; padding: 16px 18px; font-weight: 650; list-style: none; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 18px; color: var(--accent); font-size: 1.2rem; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { padding: 0 18px 16px; margin: 0; color: var(--muted); }

/* donate */
.donate-block { background: linear-gradient(135deg, #14253d, #0d2430); border: 1px solid #2b4a66; border-radius: var(--radius); padding: 26px 28px; margin: 34px 0; }
.donate-block h2, .donate-block h3 { margin-top: 0; }
.donate-block p { color: #cfe0f0; max-width: 720px; }
.donate-block--viz { display: grid; grid-template-columns: 1.25fr .75fr; gap: 26px; align-items: center; }
.donate-block--viz .donate-copy { min-width: 0; }
.donate-viz svg { display: block; width: 100%; height: auto; border-radius: var(--radius); box-shadow: var(--shadow); }
@media (max-width: 860px) { .donate-block--viz { grid-template-columns: 1fr; } }

/* cta repeat */
.cta-repeat { border: 2px dashed var(--accent); border-radius: var(--radius); padding: 22px 24px; margin: 30px 0; background: var(--accent-soft); }
.cta-repeat p { font-size: 1.05rem; }

.floating-donate { position: fixed; right: 20px; bottom: 20px; background: var(--donate); color: var(--donate-ink); padding: 12px 20px; border-radius: 999px; text-decoration: none; font-weight: 800; box-shadow: 0 10px 30px -8px rgba(163, 230, 53, .65); z-index: 45; }
.floating-donate:hover { background: var(--donate-dark); color: var(--donate-ink); }
@media (max-width: 700px) { .floating-donate { display: none; } }

/* section visualizations (SVG in Midnight style) */
.section-viz { margin: 22px 0 4px; }
.section-viz svg { display: block; width: 100%; height: auto; border-radius: var(--radius); box-shadow: var(--shadow); }

/* prose */
.prose { max-width: 760px; }
.prose h2 { margin-top: 2em; }
.table-wrap { overflow-x: auto; margin: 18px 0; }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
th { background: var(--bg-soft); }
blockquote { border-left: 4px solid var(--accent); background: var(--accent-soft); margin: 18px 0; padding: 12px 18px; border-radius: 0 var(--radius) var(--radius) 0; color: #cfe6f7; }

/* post */
.post-meta { color: var(--muted); font-size: .92rem; }
.post-meta .author { font-weight: 650; color: var(--text); }

/* ad slot — reserved height, no CLS */
.ad-slot { border: 1px dashed #2b3a52; border-radius: var(--radius); background: rgba(19, 28, 46, .6); display: grid; place-items: center; margin: 26px 0; }
.ad-label { font-size: .75rem; color: #5d6f88; text-transform: uppercase; letter-spacing: .08em; font-family: var(--mono); }

.updated { color: var(--muted); font-size: .88rem; margin: 40px 0 10px; font-family: var(--mono); }
.muted { color: var(--muted); }
.h1 { margin-top: 20px; }

/* tools */
.tool-calc { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: var(--bg-card); box-shadow: var(--shadow); margin: 22px 0; }
.tool-calc label { display: block; font-weight: 600; margin: 12px 0 4px; font-size: .95rem; }
.tool-calc input[type=number], .tool-calc input[type=text], .tool-calc select { width: 100%; max-width: 420px; padding: 11px 12px; border: 1.5px solid var(--line); border-radius: 10px; font: inherit; background: var(--panel); color: var(--text); }
.tool-calc input::placeholder { color: #5d6f88; }
.tool-calc input:focus, .tool-calc select:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
.tool-result { margin-top: 18px; padding: 16px 18px; background: var(--accent-soft); border: 1px solid #1e4258; border-radius: var(--radius); font-size: 1.05rem; }
.tool-result strong { font-size: 1.3rem; color: var(--accent); font-family: var(--mono); font-variant-numeric: tabular-nums; }
.tool-table td, .tool-table th { font-size: .9rem; }

/* footer */
.site-footer { border-top: 1px solid var(--line); margin-top: 60px; background: var(--bg-deep); }
.site-footer .container { padding-top: 34px; padding-bottom: 30px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; }
@media (max-width: 800px) { .foot-grid { grid-template-columns: 1fr; gap: 18px; } }
.foot-grid ul { list-style: none; padding: 0; margin: 0; }
.foot-grid li { margin: 6px 0; }
.foot-grid a { color: var(--text); text-decoration: none; }
.foot-grid a:hover { color: var(--accent); }
.brand-foot { font-weight: 800; font-size: 1.1rem; margin-top: 0; letter-spacing: -.02em; }
.copyright { color: var(--muted); font-size: .85rem; border-top: 1px solid var(--line); padding-top: 16px; margin-top: 26px; }

/* cookie banner */
.cookie-banner { position: fixed; left: 16px; right: 16px; bottom: 16px; background: var(--bg-soft); color: var(--text); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 18px; display: flex; gap: 14px; align-items: center; z-index: 60; box-shadow: 0 20px 40px -12px rgba(0,0,0,.6); }
.cookie-banner p { margin: 0; font-size: .9rem; color: var(--muted); }
.cookie-banner[hidden] { display: none; }

/* stars */
.stars { color: var(--warn); letter-spacing: 2px; }

/* mobile: крупные цели, кнопки на всю ширину */
@media (max-width: 600px) {
  body { font-size: 16px; background-size: 28px 28px; }
  .hero::before { background-size: 28px 28px; }
  .btn-row { flex-direction: column; }
  .btn { width: 100%; }
  .card, .faq-item, .donate-block, .cta-repeat { padding-left: 18px; padding-right: 18px; }
  .faq-item summary { padding: 15px 18px; }
  .btn--sm { width: auto; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .card--link, .btn { transition: none; } .card--link:hover { transform: none; } }