/* =========================================================
   Vizxity — маркетинговый сайт
   Design tokens (Nexus-derived cool tech palette, light-first)
   ========================================================= */

@font-face {
  font-family: 'Cabinet Grotesk';
  src: local;
}

:root,
[data-theme='light'] {
  /* Surfaces — cool near-white, slightly blue-tinted */
  --color-bg: #f7f9fb;
  --color-surface: #ffffff;
  --color-surface-2: #ffffff;
  --color-surface-offset: #eef2f6;
  --color-surface-offset-2: #e6ecf1;
  --color-divider: #e2e8ee;
  --color-border: #d8e0e8;

  /* Text — deep slate navy */
  --color-text: #10171f;
  --color-text-muted: #57677a;
  --color-text-faint: #9aa8b6;
  --color-text-inverse: #f7f9fb;

  /* Primary accent — emerald → teal (speedyindex-inspired, lighter) */
  --color-primary: #0e9f7e;
  --color-primary-hover: #0b8267;
  --color-primary-active: #086854;
  --color-primary-highlight: #d9f2ea;
  --color-secondary: #2563eb;

  --color-success: #16a34a;
  --color-warning: #b45309;
  --color-error: #be185d;
  --color-success-highlight: #d9f2df;
  --color-warning-highlight: #f6e6d3;
  --color-error-highlight: #f7dbe8;

  --radius-sm: 0.5rem;
  --radius-md: 0.875rem;
  --radius-lg: 1.25rem;
  --radius-xl: 1.75rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px rgba(16, 23, 31, 0.05);
  --shadow-md: 0 8px 24px rgba(16, 23, 31, 0.08);
  --shadow-lg: 0 24px 64px rgba(16, 23, 31, 0.14);

  --content-narrow: 640px;
  --content-default: 1040px;
  --content-wide: 1280px;

  --font-display: 'Cabinet Grotesk', 'General Sans', 'Helvetica Neue', sans-serif;
  --font-body: 'General Sans', 'Satoshi', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

[data-theme='dark'] {
  --color-bg: #0a0f14;
  --color-surface: #101820;
  --color-surface-2: #131c25;
  --color-surface-offset: #16202a;
  --color-surface-offset-2: #1b2733;
  --color-divider: #1e2a36;
  --color-border: #263544;
  --color-text: #e7edf2;
  --color-text-muted: #93a4b3;
  --color-text-faint: #5c6c7a;
  --color-text-inverse: #0a0f14;
  --color-primary: #22c99a;
  --color-primary-hover: #3ee0b0;
  --color-primary-active: #14b389;
  --color-primary-highlight: #163229;
  --color-secondary: #5b8def;
  --color-success: #34d17a;
  --color-warning: #e0a24d;
  --color-error: #ee6ba5;
  --color-success-highlight: #16291c;
  --color-warning-highlight: #2c2415;
  --color-error-highlight: #2c1622;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.55);
}

/* ---- Type scale ---- */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.5rem);
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
}

/* ---- Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}
body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-interactive), color var(--transition-interactive);
}
img, svg { display: block; max-width: 100%; }
ul[role='list'] { list-style: none; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.12; font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; }
p, li { text-wrap: pretty; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

.wrap {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 4vw, var(--space-10));
}
section { padding-block: clamp(var(--space-16), 8vw, var(--space-24)); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-highlight);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

h1 { font-size: var(--text-3xl); }
.section-title { font-size: var(--text-2xl); max-width: 26ch; }
.section-sub { color: var(--color-text-muted); font-size: var(--text-base); max-width: 56ch; margin-top: var(--space-3); }
.section-head { display: flex; flex-direction: column; gap: var(--space-3); margin-bottom: var(--space-12); }
.section-head.center { align-items: center; text-align: center; margin-inline: auto; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), background var(--transition-interactive), border-color var(--transition-interactive);
  white-space: nowrap;
}
.btn-primary {
  color: #ffffff;
  background: linear-gradient(120deg, var(--color-primary), var(--color-secondary));
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-ghost {
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-xs); }
.btn-block { width: 100%; }

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: var(--space-6);
}
.brand { display: flex; align-items: center; gap: var(--space-2); font-family: var(--font-display); font-weight: 700; font-size: var(--text-lg); }
.brand svg { width: 30px; height: 30px; color: var(--color-primary); }
.main-nav { display: flex; align-items: center; gap: var(--space-8); }
.main-nav a { font-size: var(--text-sm); font-weight: 500; color: var(--color-text-muted); transition: color var(--transition-interactive); }
.main-nav a:hover { color: var(--color-text); }
.header-actions { display: flex; align-items: center; gap: var(--space-3); }
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}
.theme-toggle:hover { color: var(--color-primary); border-color: var(--color-primary); }
.theme-toggle svg { width: 18px; height: 18px; }
.nav-toggle { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; }
.nav-toggle svg { width: 22px; height: 22px; }

/* ---- Hero ---- */
.hero { padding-top: clamp(var(--space-16), 10vw, var(--space-24)); overflow: hidden; position: relative; }
.hero .wrap { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: minmax(0,1.05fr) minmax(0,0.95fr); gap: var(--space-16); align-items: center; }
.hero-copy h1 { margin-top: var(--space-5); }
.hero-copy .accent { color: var(--color-primary); }
.hero-copy p.lede { margin-top: var(--space-5); font-size: var(--text-lg); color: var(--color-text-muted); max-width: 46ch; }
.hero-cta { display: flex; gap: var(--space-4); margin-top: var(--space-8); flex-wrap: wrap; }
.hero-meta { display: flex; gap: var(--space-6); margin-top: var(--space-10); flex-wrap: wrap; }
.hero-meta div { display: flex; flex-direction: column; gap: 2px; }
.hero-meta strong { font-family: var(--font-display); font-size: var(--text-lg); }
.hero-meta span { font-size: var(--text-xs); color: var(--color-text-muted); }

.hero-visual { position: relative; }
.dash-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-6);
  position: relative;
}
.dash-card .dash-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-5); }
.dash-head .dots { display: flex; gap: 6px; }
.dash-head .dots span { width: 8px; height: 8px; border-radius: 50%; background: var(--color-border); }
.dash-head strong { font-family: var(--font-display); font-size: var(--text-sm); }
.dash-badge { font-size: var(--text-xs); font-weight: 600; padding: 3px 10px; border-radius: var(--radius-full); background: var(--color-success-highlight); color: var(--color-success); }
.dash-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); margin-bottom: var(--space-5); }
.dash-metrics .m { background: var(--color-surface-offset); border-radius: var(--radius-md); padding: var(--space-3); }
.dash-metrics .m span { display: block; font-size: var(--text-xs); color: var(--color-text-muted); }
.dash-metrics .m strong { font-family: var(--font-mono); font-size: var(--text-base); }
.dash-metrics .m strong.up { color: var(--color-success); }
.dash-metrics .m strong.down { color: var(--color-error); }
.dash-chart { height: 108px; border-radius: var(--radius-md); background: var(--color-surface-offset); position: relative; overflow: hidden; margin-bottom: var(--space-4); }
.dash-alert { display: flex; gap: var(--space-3); align-items: flex-start; padding: var(--space-3); border-radius: var(--radius-md); background: var(--color-warning-highlight); font-size: var(--text-xs); }
.dash-alert svg { width: 16px; height: 16px; color: var(--color-warning); flex-shrink: 0; margin-top: 2px; }
.float-chip {
  position: absolute;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-3) var(--space-4);
  display: flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-xs); font-weight: 600;
}
.float-chip svg { width: 16px; height: 16px; color: var(--color-primary); }
.chip-1 { top: -22px; right: -18px; }
.chip-2 { bottom: -20px; left: -24px; }

/* ---- Logos strip ---- */
.logos-strip { padding-block: var(--space-10); border-top: 1px solid var(--color-divider); border-bottom: 1px solid var(--color-divider); }
.logos-strip .wrap { display: flex; align-items: center; gap: var(--space-8); flex-wrap: wrap; justify-content: space-between; }
.logos-strip p { font-size: var(--text-xs); color: var(--color-text-faint); text-transform: uppercase; letter-spacing: 0.06em; white-space: nowrap; }
.logos-row { display: flex; gap: var(--space-8); flex-wrap: wrap; align-items: center; color: var(--color-text-muted); font-size: var(--text-sm); font-weight: 600; }

/* ---- Feature cards ---- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--color-primary); }
.feature-icon { width: 44px; height: 44px; border-radius: var(--radius-md); background: var(--color-primary-highlight); display: flex; align-items: center; justify-content: center; margin-bottom: var(--space-4); }
.feature-icon svg { width: 22px; height: 22px; color: var(--color-primary); }
.feature-card h3 { font-size: var(--text-lg); margin-bottom: var(--space-2); }
.feature-card p { color: var(--color-text-muted); font-size: var(--text-sm); }

/* ---- How it works ---- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.step { position: relative; padding-top: var(--space-8); }
.step .num {
  position: absolute; top: 0; left: 0;
  font-family: var(--font-display); font-weight: 700; font-size: var(--text-xl);
  color: var(--color-primary-highlight);
  -webkit-text-stroke: 1.5px var(--color-primary);
  color: transparent;
}
.step h3 { font-size: var(--text-base); margin: var(--space-3) 0 var(--space-2); }
.step p { font-size: var(--text-sm); color: var(--color-text-muted); }

/* ---- Trust / methodology banner ---- */
.trust-banner {
  border-radius: var(--radius-xl);
  background: linear-gradient(120deg, color-mix(in srgb, var(--color-primary) 10%, var(--color-surface)), var(--color-surface));
  border: 1px solid var(--color-border);
  padding: clamp(var(--space-8), 5vw, var(--space-12));
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-6);
  align-items: center;
}
.trust-banner .icon { width: 56px; height: 56px; border-radius: var(--radius-lg); background: var(--color-success-highlight); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.trust-banner .icon svg { width: 28px; height: 28px; color: var(--color-success); }
.trust-banner h3 { font-size: var(--text-lg); margin-bottom: var(--space-2); }
.trust-banner p { color: var(--color-text-muted); font-size: var(--text-sm); max-width: 68ch; }

/* ---- Pricing ---- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); align-items: stretch; }
.plan-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  position: relative;
}
.plan-card.featured { border-color: var(--color-primary); box-shadow: var(--shadow-lg); }
.plan-badge {
  position: absolute; top: -14px; right: var(--space-6);
  background: linear-gradient(120deg, var(--color-primary), var(--color-secondary));
  color: #fff; font-size: var(--text-xs); font-weight: 700;
  padding: 4px 14px; border-radius: var(--radius-full);
}
.plan-name { font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-muted); }
.plan-price { display: flex; align-items: baseline; gap: var(--space-2); margin: var(--space-3) 0 var(--space-1); }
.plan-price strong { font-family: var(--font-display); font-size: var(--text-2xl); }
.plan-price span { color: var(--color-text-muted); font-size: var(--text-sm); }
.plan-desc { color: var(--color-text-muted); font-size: var(--text-sm); margin-bottom: var(--space-6); }
.plan-features { display: flex; flex-direction: column; gap: var(--space-3); margin-bottom: var(--space-8); flex: 1; }
.plan-features li { display: flex; gap: var(--space-3); font-size: var(--text-sm); align-items: flex-start; }
.plan-features li svg { width: 18px; height: 18px; color: var(--color-primary); flex-shrink: 0; margin-top: 2px; }
.plan-features li.dim { color: var(--color-text-faint); }
.plan-features li.dim svg { color: var(--color-text-faint); }

/* ---- FAQ ---- */
.faq-list { max-width: var(--content-narrow); margin-inline: auto; display: flex; flex-direction: column; gap: var(--space-3); }
.faq-item { border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); overflow: hidden; }
.faq-q { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); padding: var(--space-5) var(--space-6); font-weight: 600; font-size: var(--text-base); text-align: left; }
.faq-q svg { width: 18px; height: 18px; color: var(--color-text-muted); flex-shrink: 0; transition: transform var(--transition-interactive); }
.faq-item[data-open="true"] .faq-q svg { transform: rotate(45deg); color: var(--color-primary); }
.faq-a { padding: 0 var(--space-6); max-height: 0; overflow: hidden; transition: max-height var(--transition-interactive), padding var(--transition-interactive); color: var(--color-text-muted); font-size: var(--text-sm); }
.faq-item[data-open="true"] .faq-a { max-height: 240px; padding-bottom: var(--space-5); }

/* ---- Final CTA ---- */
.final-cta {
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, #0e9f7e, #2563eb);
  color: #fff;
  padding: clamp(var(--space-12), 6vw, var(--space-20));
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: var(--space-5);
}
.final-cta h2 { font-size: var(--text-2xl); max-width: 24ch; color: #fff; }
.final-cta p { color: rgba(255,255,255,0.85); max-width: 52ch; }
.final-cta .btn-primary { background: #ffffff; color: var(--color-primary-active); }
.final-cta .btn-ghost { border-color: rgba(255,255,255,0.4); color: #fff; background: transparent; }
.final-cta .btn-ghost:hover { border-color: #fff; color: #fff; background: rgba(255,255,255,0.1); }

/* ---- Footer ---- */
.site-footer { border-top: 1px solid var(--color-divider); padding-block: var(--space-16) var(--space-10); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: var(--space-10); margin-bottom: var(--space-12); }
.footer-brand p { color: var(--color-text-muted); font-size: var(--text-sm); margin-top: var(--space-3); max-width: 32ch; }
.footer-col h4 { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-faint); margin-bottom: var(--space-4); }
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-col a { font-size: var(--text-sm); color: var(--color-text-muted); transition: color var(--transition-interactive); }
.footer-col a:hover { color: var(--color-primary); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-4); padding-top: var(--space-8); border-top: 1px solid var(--color-divider); font-size: var(--text-xs); color: var(--color-text-faint); }

/* ---- Responsive ---- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 480px; margin-inline: auto; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: var(--space-10); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 440px; margin-inline: auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .trust-banner { grid-template-columns: 1fr; text-align: left; }
}
@media (max-width: 720px) {
  .main-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .feature-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .hero-meta { gap: var(--space-4); }
  h1 { font-size: clamp(2rem, 8vw, 2.75rem); }
}