/* PadelSense site, style A "Night court": the app's own colours
   (mobile/src/theme.ts in padel2), Archivo for headings, IBM Plex Sans for
   text. Archivo has no Cyrillic, so Russian headings use Inter Tight. */

:root {
  color-scheme: dark;
  --bg: #0B0F0E;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-hover: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.22);
  --text: #F5F7F6;
  --text-2: rgba(245, 247, 246, 0.72);
  --text-3: rgba(245, 247, 246, 0.50);
  --accent: #22C55E;
  --accent-hover: #2DD36A;
  --accent-pressed: #1CA750;
  --on-accent: #08210F;
  --link: #4ADE80;
  --accent-soft: rgba(34, 197, 94, 0.08);
  --accent-line: rgba(34, 197, 94, 0.28);
  --danger: #EF4444;

  --font-latin: "Archivo", "Inter Tight", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: var(--font-latin);
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;

  --radius: 20px;
  --gutter: 20px;
  --max: 1160px;
  --header: 64px;
}

html[lang="ru"] {
  --font-display: "Inter Tight", "Archivo", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (min-width: 768px) {
  :root { --gutter: 32px; }
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header) + 16px);
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

/* Set by assets/i18n.js until the page's texts are in place. */
.i18n-pending body { visibility: hidden; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img,
svg { display: block; max-width: 100%; }

a { color: var(--link); text-underline-offset: 3px; }

:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 3px;
  border-radius: 6px;
}

[hidden] { display: none !important; }

.wrap {
  width: 100%;
  max-width: calc(var(--max) + 2 * var(--gutter));
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.skip {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 20;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  text-decoration: none;
}
.skip:focus { top: 12px; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 15, 14, 0.80);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 28px;
  height: var(--header);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  color: var(--text);
  text-decoration: none;
  font: 800 19px/1 var(--font-latin);
  letter-spacing: -0.01em;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  box-shadow: 0 0 0 1px var(--border);
}

.nav {
  display: none;
  gap: 28px;
}

.nav a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.15s;
}
.nav a:hover { color: var(--text); }

@media (min-width: 860px) {
  .nav { display: flex; }
}

.lang {
  display: flex;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}

.lang a {
  display: grid;
  place-items: center;
  min-width: 40px;
  height: 32px;
  padding: 0 8px;
  border-radius: 999px;
  color: var(--text-3);
  font: 600 13px/1 var(--font-body);
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: color 0.15s, background 0.15s;
}
.lang a:hover { color: var(--text); }
.lang a[aria-current] {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text);
}

/* ---------- Type & buttons ---------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px 7px 11px;
  border: 1px solid var(--accent-line);
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--link);
  font: 600 13px/1 var(--font-body);
  letter-spacing: 0.02em;
}
.eyebrow svg { width: 14px; height: 14px; flex: none; }

.kicker {
  margin: 0 0 14px;
  color: var(--link);
  font: 600 13px/1 var(--font-body);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 { text-wrap: balance; }

h2 {
  margin: 0;
  font: 800 clamp(30px, 7.6vw, 48px)/1.08 var(--font-display);
  letter-spacing: -0.02em;
}

.accent { color: var(--accent); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 26px;
  border-radius: 999px;
  font: 600 16px/1.2 var(--font-body);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.btn svg { width: 20px; height: 20px; flex: none; }

.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
  border: 0;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:active { background: var(--accent-pressed); }

.btn-outline {
  border: 1.5px solid var(--border-strong);
  background: transparent;
  color: var(--text);
}
.btn-outline:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

@media (min-width: 520px) {
  .actions { flex-direction: row; flex-wrap: wrap; }
}

.placeholder-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px dashed rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  background: rgba(11, 15, 14, 0.72);
  color: var(--text-2);
  font: 500 13px/1.3 var(--font-body);
}
.placeholder-note svg { width: 15px; height: 15px; flex: none; opacity: 0.8; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 44px 0 48px;
  overflow: clip;
}

.hero::before {
  content: "";
  position: absolute;
  top: -260px;
  right: -380px;
  width: 980px;
  height: 980px;
  background: radial-gradient(closest-side, rgba(34, 197, 94, 0.17), rgba(34, 197, 94, 0.05) 55%, transparent 75%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  gap: 48px;
  align-items: center;
}

.hero h1 {
  margin: 20px 0;
  font: 800 clamp(40px, 10.4vw, 72px)/1.02 var(--font-display);
  letter-spacing: -0.028em;
}

.hero .lead {
  max-width: 34em;
  margin: 0 0 32px;
  color: var(--text-2);
  font-size: 18px;
  line-height: 1.55;
}

@media (min-width: 980px) {
  .hero { padding: 88px 0 96px; }
  .hero-grid { grid-template-columns: 1fr 1.08fr; gap: 56px; }
  .hero .lead { font-size: 19px; }
}

@media (min-width: 1200px) {
  .hero-grid { grid-template-columns: 1fr 1.22fr; gap: 64px; }
}

/* The phone, lying on its side the way it sits on the glass. */
.device {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.phone {
  position: relative;
  width: 100%;
  aspect-ratio: 2.12;
  padding: clamp(7px, 1.3vw, 11px);
  border-radius: clamp(30px, 5.4vw, 52px);
  background: linear-gradient(150deg, #2B322F, #141917 45%, #1E2421);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.10),
    0 0 0 1px rgba(0, 0, 0, 0.7),
    0 50px 90px -30px rgba(0, 0, 0, 0.9),
    0 0 120px -20px rgba(34, 197, 94, 0.25);
}

.phone-screen {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: clamp(23px, 4.3vw, 42px);
  background: #060A09;
}

.phone-screen > svg,
.phone-screen > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.phone-island {
  position: absolute;
  top: 50%;
  left: 2.4%;
  width: 2.3%;
  height: 27%;
  transform: translateY(-50%);
  border-radius: 999px;
  background: #000;
}

.rec {
  position: absolute;
  top: 7%;
  left: 7.5%;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 10px 5px 8px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font: 600 clamp(10px, 1.6vw, 12px)/1 var(--font-body);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}
.rec::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--danger);
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.8);
}

@media (prefers-reduced-motion: no-preference) {
  .ball-glow { animation: glow 2.4s ease-in-out infinite; transform-origin: center; transform-box: fill-box; }
  .rec::before { animation: blink 1.6s steps(2, jump-none) infinite; }
}

@keyframes glow {
  0%, 100% { opacity: 0.45; transform: scale(1); }
  50% { opacity: 0.9; transform: scale(1.25); }
}

@keyframes blink {
  50% { opacity: 0.35; }
}

/* ---------- Sections ---------- */

.section { padding: 56px 0; }

.section-head {
  max-width: 660px;
  margin-bottom: 36px;
}

@media (min-width: 980px) {
  .section { padding: 80px 0; }
  .section-head { margin-bottom: 48px; }
}

/* How it works */

.steps {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step {
  display: grid;
  grid-template-columns: 58px 1fr;
  align-items: start;
  padding: 22px 22px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.step-num {
  color: var(--accent);
  font: 800 40px/0.9 var(--font-latin);
  letter-spacing: -0.04em;
}

.step h3 {
  margin: 2px 0 8px;
  font: 800 20px/1.2 var(--font-display);
  letter-spacing: -0.01em;
}

.step p {
  margin: 0;
  color: var(--text-2);
  font-size: 15.5px;
  line-height: 1.55;
}

@media (min-width: 640px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step { display: block; padding: 26px 24px 28px; }
  .step-num { display: block; margin-bottom: 26px; font-size: 48px; }
}

@media (min-width: 1040px) {
  .steps { grid-template-columns: repeat(4, 1fr); gap: 18px; }
}

/* Highlights */

.reel-grid {
  display: grid;
  gap: 36px;
}

@media (min-width: 980px) {
  .reel-grid { grid-template-columns: 1.45fr 1fr; gap: 56px; align-items: center; }
}

.reel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin: 0;
}

.video {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    radial-gradient(60% 80% at 50% 45%, rgba(34, 197, 94, 0.16), transparent 70%),
    #0C1411;
}

.video > svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.play {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  place-items: center;
  width: clamp(56px, 12vw, 76px);
  height: clamp(56px, 12vw, 76px);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 10px rgba(34, 197, 94, 0.14), 0 0 60px rgba(34, 197, 94, 0.45);
}
.play svg { width: 38%; height: 38%; margin-left: 8%; color: var(--on-accent); }

.video-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 5px 9px;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.5);
  color: var(--text);
  font: 600 12px/1 var(--font-body);
  letter-spacing: 0.06em;
}

.features {
  display: grid;
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 640px) and (max-width: 979px) {
  .features { grid-template-columns: repeat(2, 1fr); gap: 28px 32px; }
}

.feature {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 16px;
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--accent-line);
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--accent);
}
.feature-icon svg { width: 19px; height: 19px; }

.feature h3 {
  margin: 7px 0 4px;
  font: 600 17px/1.3 var(--font-body);
}

.feature p {
  margin: 0;
  color: var(--text-2);
  font-size: 15.5px;
  line-height: 1.55;
}

/* Mount */

.mount-panel {
  display: grid;
  gap: 24px;
  padding: 14px 14px 26px;
  border: 1px solid var(--accent-line);
  border-radius: 28px;
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(34, 197, 94, 0.16), transparent 60%),
    rgba(34, 197, 94, 0.07);
}

.mount-photo {
  margin: 0;
  overflow: hidden;
  border-radius: 18px;
  aspect-ratio: 800 / 387;
  background: #111;
}

.mount-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 54% 50%;
}

.mount-body { padding: 0 8px; }

.mount-body h2 { margin: 14px 0 16px; }

.mount-body p {
  margin: 0 0 14px;
  color: var(--text-2);
  font-size: 17px;
}

.mount-body .note {
  font-size: 15px;
  color: var(--text-3);
  margin-bottom: 26px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.14);
  color: var(--link);
  font: 600 13px/1 var(--font-body);
  letter-spacing: 0.02em;
}

@media (min-width: 900px) {
  .mount-panel {
    grid-template-columns: 1.1fr 1fr;
    gap: 48px;
    align-items: center;
    padding: 18px 48px 18px 18px;
  }
  .mount-photo { aspect-ratio: 4 / 3; }
  .mount-body { padding: 24px 0; }
}

/* FAQ */

/* Phones: heading, questions, then support. Wide: heading and support on
   the left, questions on the right. */
.faq-grid {
  display: grid;
  grid-template-areas: "title" "list" "support";
  gap: 28px;
}

.faq-title { grid-area: title; }
.faq { grid-area: list; }
.support-card { grid-area: support; }

@media (min-width: 980px) {
  .faq-grid {
    grid-template-columns: 1fr 1.55fr;
    grid-template-rows: auto 1fr;
    grid-template-areas: "title list" "support list";
    column-gap: 72px;
    row-gap: 28px;
    align-items: start;
  }
}

.faq { border-top: 1px solid var(--border); }

.faq details { border-bottom: 1px solid var(--border); }

.faq summary {
  position: relative;
  padding: 20px 44px 20px 0;
  list-style: none;
  cursor: pointer;
  font: 600 17px/1.4 var(--font-body);
}
.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 6px;
  width: 14px;
  height: 14px;
  margin-top: -7px;
  background:
    linear-gradient(currentColor, currentColor) center / 14px 2px no-repeat,
    linear-gradient(currentColor, currentColor) center / 2px 14px no-repeat;
  color: var(--text-3);
  transition: transform 0.2s, color 0.2s;
}

.faq details[open] summary::after {
  transform: rotate(45deg);
  color: var(--accent);
}

.faq .answer {
  max-width: 62ch;
  padding: 0 0 22px;
  color: var(--text-2);
}
.faq .answer p { margin: 0 0 10px; }
.faq .answer p:last-child { margin-bottom: 0; }

.support-card {
  padding: 22px 22px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.support-card h3 {
  margin: 0 0 8px;
  font: 600 17px/1.3 var(--font-body);
}

.support-card p {
  margin: 0 0 10px;
  color: var(--text-2);
  font-size: 15.5px;
}
.support-card p:last-child { margin-bottom: 0; }

.mail {
  font-weight: 600;
  overflow-wrap: anywhere;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 40px 0 48px;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
}

.footer-links a {
  color: var(--text-2);
  font-size: 15px;
  text-decoration: none;
}
.footer-links a:hover { color: var(--text); }

.copyright {
  margin: 0;
  color: var(--text-3);
  font-size: 14px;
}

@media (min-width: 900px) {
  .footer-grid { flex-direction: row; align-items: center; justify-content: space-between; }
}

/* ---------- Join page ---------- */

.join-main {
  position: relative;
  padding: 36px 0 56px;
  overflow: clip;
}

.join-main::before {
  content: "";
  position: absolute;
  top: -320px;
  left: 50%;
  width: 760px;
  height: 760px;
  transform: translateX(-10%);
  background: radial-gradient(closest-side, rgba(34, 197, 94, 0.14), transparent 75%);
  pointer-events: none;
}

.join-main .wrap { position: relative; }

.join-card {
  max-width: 460px;
  margin: 0 auto;
}

.join-card h1 {
  margin: 18px 0 14px;
  font: 800 clamp(34px, 9.4vw, 44px)/1.06 var(--font-display);
  letter-spacing: -0.025em;
}

.join-card .lead {
  margin: 0;
  color: var(--text-2);
  font-size: 17px;
}

.code-card {
  margin: 28px 0 20px;
  padding: 16px 18px 18px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
}

.code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.code-label {
  color: var(--text-3);
  font: 600 12px/1 var(--font-body);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 13px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--text);
  font: 600 14px/1 var(--font-body);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.copy svg { width: 15px; height: 15px; }
.copy:hover { border-color: var(--accent); }
.copy.done { border-color: var(--accent-line); color: var(--link); }

.code-value {
  margin-top: 12px;
  color: var(--text);
  font: 500 15px/1.45 var(--font-mono);
  letter-spacing: 0.02em;
  word-break: break-all;
}

.join-card .actions { flex-direction: column; }
.join-card .btn { width: 100%; }

.join-note {
  margin: 18px 0 0;
  color: var(--text-3);
  font-size: 14.5px;
  line-height: 1.55;
}

.join-about {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.join-about h2 {
  font-size: 22px;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}

.join-about p {
  margin: 0 0 14px;
  color: var(--text-2);
  font-size: 15.5px;
}

.join-about .more {
  font-weight: 600;
  text-decoration: none;
}

.missing {
  margin: 28px 0 20px;
  padding: 16px 18px;
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: 16px;
  background: rgba(245, 158, 11, 0.08);
  color: var(--text);
}

/* ---------- Small pages (404) ---------- */

.center-page {
  display: grid;
  place-items: center;
  min-height: calc(100vh - var(--header));
  min-height: calc(100svh - var(--header));
  padding: 40px 0;
  text-align: center;
}

.center-page h1 {
  margin: 0 0 12px;
  font: 800 clamp(34px, 9vw, 48px)/1.05 var(--font-display);
  letter-spacing: -0.02em;
}

.center-page p {
  margin: 0 0 28px;
  color: var(--text-2);
}

/* Inter Tight is already set tight; the negative tracking Archivo wants
   makes Cyrillic letters touch. */
html[lang="ru"] h1,
html[lang="ru"] h2,
html[lang="ru"] h3 { letter-spacing: -0.005em; }