/* Сайт MindPalace. Палитра — та же, что в приложении (src/styles/index.css). */
:root {
  --bg: #ffffff;
  --surface: #f2f2f2;
  --surface-hover: #e5e5e5;
  --elevated: #ffffff;
  --fg: #0f0f0f;
  --fg-muted: #606060;
  --border: #e5e5e5;
  --accent: #ff0033;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f0f;
    --surface: #272727;
    --surface-hover: #3f3f3f;
    --elevated: #212121;
    --fg: #f1f1f1;
    --fg-muted: #aaaaaa;
    --border: #3f3f3f;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 "Roboto", "Segoe UI", system-ui, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

code,
kbd {
  font: 0.9em ui-monospace, "Cascadia Code", Consolas, monospace;
  background: var(--surface);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}

kbd {
  border: 1px solid var(--border);
}

.wrap {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.muted {
  color: var(--fg-muted);
}

.small {
  font-size: 14px;
}

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

/* --- шапка --- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
}

nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 15px;
}

nav a {
  text-decoration: none;
  color: var(--fg-muted);
}

nav a:hover {
  color: var(--fg);
}

/* --- кнопки --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border-radius: 999px;
  background: var(--fg);
  color: var(--bg) !important;
  font-weight: 500;
  text-decoration: none;
  transition: opacity 0.15s;
}

.btn:hover {
  opacity: 0.85;
}

.btn svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.btn-small {
  height: 36px;
  padding: 0 18px;
}

.btn-big {
  height: 52px;
  padding: 0 28px;
  font-size: 17px;
  background: var(--accent);
  color: #fff !important;
}

/* --- первый экран --- */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  gap: 56px;
  padding-top: 72px;
  padding-bottom: 72px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--fg-muted);
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1 {
  margin: 0;
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.lead {
  margin: 20px 0 32px;
  max-width: 540px;
  font-size: 19px;
  color: var(--fg-muted);
}

.cta-meta {
  margin: 12px 0 0;
  color: var(--fg-muted);
  font-size: 14px;
}

/* Схематичное окно приложения. */
.mock {
  border-radius: 16px;
  background: var(--elevated);
  border: 1px solid var(--border);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.15);
  overflow: hidden;
}

.mock-bar {
  display: flex;
  gap: 6px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

.mock-bar i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--surface-hover);
}

.mock-body {
  display: grid;
  grid-template-columns: 110px 1fr;
  height: 300px;
}

.mock-side {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 12px;
}

.mock-side b {
  height: 14px;
  border-radius: 6px;
  background: var(--surface);
}

.mock-side b.on {
  background: var(--surface-hover);
}

.mock-side b.s {
  margin-left: 14px;
  height: 10px;
}

.mock-side hr {
  width: 100%;
  border: 0;
  border-top: 1px solid var(--border);
  margin: 6px 0;
}

.mock-main {
  padding: 14px;
  background: var(--bg);
}

.mock-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  height: 100%;
}

.mock-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px 8px;
  border-radius: 10px;
  background: var(--surface);
}

.mock-col em {
  font-style: normal;
  font-size: 11px;
  font-weight: 600;
}

.mock-col span {
  height: 34px;
  border-radius: 6px;
  background: var(--elevated);
  border: 1px solid var(--border);
}

.mock-col span.t {
  border-left: 3px solid #8e4ec6;
}

.mock-col span.r {
  border-left-color: var(--accent);
}

.mock-col span.d {
  opacity: 0.55;
}

/* --- разделы --- */
.section {
  padding-top: 56px;
  padding-bottom: 56px;
}

h2 {
  margin: 0 0 28px;
  line-height: 1.2;
  font-size: clamp(28px, 4vw, 38px);
  letter-spacing: -0.02em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.card {
  padding: 22px;
  border-radius: 16px;
  background: var(--surface);
}

.card svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card h3 {
  margin: 12px 0 6px;
  font-size: 18px;
}

.card p {
  margin: 0;
  color: var(--fg-muted);
  font-size: 15px;
}

.privacy {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.privacy p {
  color: var(--fg-muted);
  font-size: 17px;
}

.checks {
  margin: 0;
  padding: 24px 28px;
  list-style: none;
  border-radius: 16px;
  background: var(--surface);
}

.checks li {
  position: relative;
  padding: 8px 0 8px 32px;
}

.checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #30a46c
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E")
    center / 12px no-repeat;
}

.download-box {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  padding: 32px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.download-title {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
}

.download-box .btn {
  margin-top: 20px;
}

.steps {
  margin: 0;
  padding-left: 22px;
  color: var(--fg-muted);
}

.steps li {
  padding: 4px 0 10px;
}

.steps b {
  color: var(--fg);
}

.faq details {
  border-bottom: 1px solid var(--border);
  padding: 4px 0;
}

.faq summary {
  cursor: pointer;
  padding: 14px 0;
  font-size: 17px;
  font-weight: 500;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  float: right;
  color: var(--fg-muted);
  font-weight: 400;
}

.faq details[open] summary::after {
  content: "−";
}

.faq details p {
  margin: 0 0 16px;
  color: var(--fg-muted);
}

.footer {
  margin-top: 40px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 24px;
  padding-bottom: 32px;
  font-size: 14px;
}

/* Ячейки сеток могут сжиматься уже своего содержимого — иначе на телефоне страница уезжает вбок. */
.hero > *,
.privacy > *,
.download-box > *,
.mock-cols > *,
.mock-body > * {
  min-width: 0;
}

/* --- узкие экраны --- */
@media (max-width: 860px) {
  .hero,
  .privacy,
  .download-box {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 40px;
  }

  nav a:not(.btn) {
    display: none;
  }

  .mock-body {
    grid-template-columns: 70px 1fr;
    height: 240px;
  }

  .download-box {
    padding: 24px;
  }
}