/* SYSTEM MANAGERA · FUNNEL DESIGN SYSTEM "PROTOKÓŁ" · P5 */

@font-face { font-family: 'Fraunces'; src: url('../design/fonts/Fraunces-400-900-latin.woff2') format('woff2'); font-weight: 400 900; font-display: swap; unicode-range: U+0000-00FF, U+2000-206F; }
@font-face { font-family: 'Fraunces'; src: url('../design/fonts/Fraunces-400-900-latin-ext.woff2') format('woff2'); font-weight: 400 900; font-display: swap; unicode-range: U+0100-024F, U+1E00-1EFF; }
@font-face { font-family: 'Inter'; src: url('../design/fonts/Inter-400-800-latin.woff2') format('woff2'); font-weight: 400 800; font-display: swap; unicode-range: U+0000-00FF, U+2000-206F; }
@font-face { font-family: 'Inter'; src: url('../design/fonts/Inter-400-800-latin-ext.woff2') format('woff2'); font-weight: 400 800; font-display: swap; unicode-range: U+0100-024F, U+1E00-1EFF; }
@font-face { font-family: 'IBM Plex Mono'; src: url('../design/fonts/IBMPlexMono-400-latin.woff2') format('woff2'); font-weight: 400; font-display: swap; unicode-range: U+0000-00FF; }
@font-face { font-family: 'IBM Plex Mono'; src: url('../design/fonts/IBMPlexMono-400-latin-ext.woff2') format('woff2'); font-weight: 400; font-display: swap; unicode-range: U+0100-024F; }
@font-face { font-family: 'IBM Plex Mono'; src: url('../design/fonts/IBMPlexMono-500-latin.woff2') format('woff2'); font-weight: 500; font-display: swap; unicode-range: U+0000-00FF; }
@font-face { font-family: 'IBM Plex Mono'; src: url('../design/fonts/IBMPlexMono-500-latin-ext.woff2') format('woff2'); font-weight: 500; font-display: swap; unicode-range: U+0100-024F; }

:root {
  --ivory: #f3f1ea; --ivory-2: #ebe8df; --coal: #101214;
  --black: #17191b; --white: #edecdf; --dim: #61645f; --dim-dark: #9aa09b;
  --signal: #1f5eff; --signal-ink: #f4f7ff; --signal-on-dark: #7ea2ff;
  --hair: #d8d4c8; --hair-dark: #2a2e33;
  --serif: 'Fraunces', Georgia, serif;
  --sans: 'Inter', -apple-system, 'Segoe UI', Arial, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, Menlo, monospace;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--ivory); color: var(--black); font-family: var(--sans); font-size: 17.5px; line-height: 1.65; letter-spacing: 0; -webkit-font-smoothing: antialiased; }
.wrap { max-width: 74rem; margin: 0 auto; padding: 0 22px; }
.col { max-width: 42rem; }
section { padding: clamp(64px, 10vw, 140px) 0; }
section.tight { padding: clamp(48px, 7vw, 96px) 0; }

.dark { background: var(--coal); color: var(--white); }
.dark .label { color: var(--signal-on-dark); }
.dark .excerpt .src { color: var(--signal-on-dark); }
.dark .dim { color: var(--dim-dark); }
.dim { color: var(--dim); }

h1, h2, h3 { font-family: var(--serif); font-weight: 620; line-height: 1.08; letter-spacing: -0.01em; text-wrap: balance; }
h1 { font-size: clamp(2.3rem, 6.5vw, 4.2rem); font-variation-settings: 'opsz' 100; }
h2 { font-size: clamp(1.7rem, 4vw, 2.6rem); margin-bottom: 26px; }
p { text-wrap: pretty; }
.lead { font-size: clamp(1.05rem, 2vw, 1.25rem); line-height: 1.6; }
b, strong { font-weight: 700; }

.label { font-family: var(--mono); font-size: 0.72rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.09em; color: var(--signal); display: block; margin-bottom: 22px; }
.num { font-family: var(--serif); font-variant-numeric: tabular-nums; font-weight: 700; }

.btn { display: inline-block; background: var(--signal); color: var(--signal-ink); font-family: var(--sans); font-weight: 700; font-size: 1.02rem; text-decoration: none; border: none; border-radius: 2px; cursor: pointer; padding: 18px 34px; white-space: nowrap; transition: transform 0.15s ease, box-shadow 0.15s ease; box-shadow: 0 1px 0 rgba(0,0,0,0.2); }
.btn:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(31, 94, 255, 0.35); }
.btn:active { transform: translateY(0); }
.btn-small { padding: 9px 16px; font-size: 0.84rem; }
@media (max-width: 480px) { .btn { padding: 16px 22px; font-size: 0.95rem; width: 100%; text-align: center; } .btn-small { width: auto; } }
@media (max-width: 380px) { .btn { font-size: 0.85rem; padding: 15px 14px; } }

.topbar { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: var(--coal); border-bottom: 1px solid var(--hair-dark); transform: translateY(-100%); transition: transform 0.25s ease; }
.topbar.on { transform: translateY(0); }
.topbar-in { max-width: 74rem; margin: 0 auto; padding: 10px 22px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.topbar .brand { font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--white); text-decoration: none; }
@media (prefers-reduced-motion: reduce) { .topbar { transition: none; } }

.card { background: var(--ivory-2); border: 1px solid var(--hair); padding: 28px 26px; }
.dark .card { background: #171a1d; border-color: var(--hair-dark); }
.excerpt { background: var(--ivory-2); border: 1px solid var(--hair); border-left: 3px solid var(--signal); padding: 26px 24px; margin: 30px 0; max-width: 44rem; }
.excerpt .src { font-family: var(--mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--dim); display: block; margin-bottom: 14px; }
.excerpt p { margin-bottom: 0.8em; } .excerpt p:last-child { margin-bottom: 0; }

.grid2 { display: grid; grid-template-columns: 1fr; gap: 18px; }
.grid3 { display: grid; grid-template-columns: 1fr; gap: 18px; }
@media (min-width: 760px) { .grid2 { grid-template-columns: 1fr 1fr; } .grid3 { grid-template-columns: repeat(3, 1fr); } }

.mark { background: linear-gradient(transparent 58%, color-mix(in srgb, var(--signal) 22%, transparent) 58%); }
.u-marker { position: relative; isolation: isolate; }
.u-marker::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0.02em; height: 0.42em; background: color-mix(in srgb, var(--signal) 26%, transparent); transform: scaleX(0); transform-origin: left; transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.15s; z-index: -1; }
.u-marker.in::after { transform: scaleX(1); }
.dark .u-marker::after { background: color-mix(in srgb, var(--signal-on-dark) 34%, transparent); }

.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.55s ease-out, transform 0.55s ease-out; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.07s; } .reveal.d2 { transition-delay: 0.14s; } .reveal.d3 { transition-delay: 0.21s; }
@media (prefers-reduced-motion: reduce) {
  .reveal, .u-marker::after { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

.form { display: flex; flex-direction: column; gap: 14px; max-width: 30rem; }
.form input[type="email"] { font-family: var(--sans); font-size: 1.02rem; padding: 16px 18px; border: 1.5px solid var(--black); background: #fff; color: var(--black); width: 100%; }
.form input[type="email"]:focus { outline: 2px solid var(--signal); outline-offset: 1px; border-color: var(--signal); }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 0.82rem; color: var(--dim); max-width: 30rem; }
.consent input { margin-top: 4px; accent-color: var(--signal); }
.consent a { color: var(--dim); }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }
.micro { font-size: 0.86rem; color: var(--dim); }

.offer { border: 2px solid var(--signal); padding: clamp(28px, 5vw, 48px); max-width: 46rem; }
.price { font-family: var(--serif); font-variant-numeric: tabular-nums; font-size: clamp(2.4rem, 6vw, 3.6rem); font-weight: 700; line-height: 1; }

details { border-top: 1px solid var(--hair); max-width: 46rem; }
details:last-of-type { border-bottom: 1px solid var(--hair); }
summary { cursor: pointer; padding: 18px 34px 18px 0; font-weight: 650; list-style: none; position: relative; font-size: 1.02rem; }
summary::after { content: '+'; position: absolute; right: 4px; color: var(--signal); font-family: var(--mono); font-size: 1.25rem; }
details[open] summary::after { content: '−'; }
summary::-webkit-details-marker { display: none; }
details .a { color: var(--dim); padding-bottom: 20px; max-width: 42rem; }

footer { border-top: 1px solid var(--hair); padding: 26px 0 44px; font-size: 0.82rem; color: var(--dim); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 22px; justify-content: space-between; }
footer a { color: var(--dim); }
.dark footer, footer.dark { border-color: var(--hair-dark); color: var(--dim-dark); }

.skip-link { position: absolute; left: -9999px; top: 0; background: var(--signal); color: var(--signal-ink); padding: 10px 16px; z-index: 200; }
.skip-link:focus { left: 0; }