/* ============================================================
   W MUSIC LAB — Global / Base
   ============================================================ */

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

[hidden] { display: none !important; }

* { margin: 0; }

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  /* Премиальная атмосфера: мягкие золотые свечения по всей странице */
  background-image:
    radial-gradient(60vw 55vh at 82% 0%, rgba(232, 179, 65, 0.07), transparent 60%),
    radial-gradient(55vw 55vh at 0% 38%, rgba(232, 179, 65, 0.05), transparent 60%),
    radial-gradient(65vw 60vh at 100% 92%, rgba(232, 179, 65, 0.06), transparent 62%);
  background-attachment: fixed;
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  position: relative;
}

/* Тонкая «зернистость» поверх всего фона */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

a { color: inherit; text-decoration: none; }

button { font: inherit; color: inherit; cursor: pointer; border: none; background: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: -0.01em;
}

::selection {
  background: var(--color-accent);
  color: var(--color-text-on-accent);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---- Layout helpers ---- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  position: relative;
  z-index: 1;
}

.section {
  padding-block: var(--space-section);
  position: relative;
  z-index: 1;
}

.section--tight { padding-block: var(--space-block); }

/* ---- Eyebrow / section heading ---- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.1rem;
}
.eyebrow::before {
  content: "";
  width: 30px;
  height: 1px;
  background: var(--color-accent);
  opacity: 0.6;
}

.section-title {
  font-size: var(--text-2xl);
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  max-width: 18ch;
}

.section-head {
  margin-bottom: var(--space-block);
}
.section-head .lead {
  margin-top: 1.1rem;
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  max-width: 70ch; /* читаемая длина строки, но шире прежнего */
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  padding: 0.95em 1.7em;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: var(--text-base);
  letter-spacing: 0.01em;
  line-height: 1;
  transition: transform var(--dur) var(--ease-out),
              box-shadow var(--dur) var(--ease-out),
              background-color var(--dur) var(--ease-out),
              border-color var(--dur) var(--ease-out),
              color var(--dur) var(--ease-out);
  will-change: transform;
}
.btn:hover { transform: translateY(-3px); }
.btn:active { transform: translateY(-1px); }

.btn--primary {
  background: var(--grad-gold);
  color: var(--color-text-on-accent);
  box-shadow: var(--shadow-gold);
}
.btn--primary:hover { box-shadow: 0 18px 55px rgba(232, 179, 65, 0.42); }

.btn--ghost {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-line-strong);
  color: var(--color-text);
  backdrop-filter: blur(6px);
}
.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--color-accent);
}

.btn--lg { padding: 1.1em 2.1em; font-size: var(--text-lg); }
.btn .arrow { transition: transform var(--dur) var(--ease-out); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---- Scroll-reveal ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---- Utility ---- */
.text-accent { color: var(--color-accent); }

/* ---- SVG icons ---- */
.icon {
  width: 1em;
  height: 1em;
  display: inline-block;
  flex: none;
  vertical-align: -0.125em;
  fill: currentColor;
}
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}