/* ===========================
   OLGO RHYTHMUS – style.css
   =========================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:        #0a0a12;
  --surface:   #12121e;
  --border:    rgba(255,255,255,0.07);
  --accent:    #e040fb;
  --accent2:   #00e5ff;
  --text:      #f0f0f5;
  --muted:     #7b7b9a;
  --font-sans: 'Space Grotesk', sans-serif;
  --font-mono: 'Space Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ── SCROLLBAR ─────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ── CONTAINER ─────────────────── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── BUTTONS ───────────────────── */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 20px rgba(224, 64, 251, 0.4);
}
.btn--primary:hover {
  background: #f06aff;
  box-shadow: 0 0 35px rgba(224, 64, 251, 0.7);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 20px rgba(224, 64, 251, 0.2);
  transform: translateY(-2px);
}

/* ── NAV ───────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2rem;
  transition: background 0.3s, backdrop-filter 0.3s, padding 0.3s;
}

.nav--scrolled {
  background: rgba(10, 10, 18, 0.85);
  backdrop-filter: blur(16px);
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
}

.nav__logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text);
  text-decoration: none;
}
.nav__logo span { color: var(--accent); }

.nav__links {
  list-style: none;
  display: flex;
  gap: 2.5rem;
}
.nav__links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--accent); }

.nav__lang {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.nav__lang:hover,
.nav__lang[data-active="en"] { color: var(--accent); border-color: var(--accent); }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all 0.3s;
}

/* ── HERO ──────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black, transparent);
}

.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
}
.hero__glow--1 {
  width: 600px; height: 600px;
  background: var(--accent);
  top: -20%; left: -10%;
  animation: drift 8s ease-in-out infinite alternate;
}
.hero__glow--2 {
  width: 500px; height: 500px;
  background: var(--accent2);
  bottom: -20%; right: -10%;
  animation: drift 10s ease-in-out infinite alternate-reverse;
}

@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(40px, 30px) scale(1.1); }
}

.hero__content {
  position: relative;
  text-align: center;
  z-index: 1;
}

.hero__label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero__title {
  font-size: clamp(3.5rem, 12vw, 9rem);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}
.hero__title span {
  -webkit-text-stroke: 2px var(--accent);
  color: transparent;
}

.hero__sub {
  font-size: 1.1rem;
  color: var(--muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}

.hero__cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.hero__scroll span {
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollLine 1.5s ease-in-out infinite;
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ── SECTIONS ──────────────────── */
.section {
  padding: 7rem 0;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.section.visible {
  opacity: 1;
  transform: translateY(0);
}

.section__header {
  margin-bottom: 3.5rem;
}
.section__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.section__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1;
}

/* ── MUSIC ─────────────────────── */
.music { background: var(--surface); }

.music__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.music__card {
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 0 40px rgba(224, 64, 251, 0.1);
  transition: box-shadow 0.3s;
}
.music__card:hover {
  box-shadow: 0 0 60px rgba(224, 64, 251, 0.25);
}

.music__info h3 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.music__info p {
  color: var(--muted);
  margin-bottom: 2rem;
  line-height: 1.8;
}

/* ── ABOUT ─────────────────────── */
.about__content {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4rem;
  align-items: center;
}

.about__visual {
  position: relative;
  width: 220px;
  height: 220px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about__ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--accent);
  opacity: 0.3;
  animation: spin 12s linear infinite;
}
.about__ring--2 {
  inset: 15px;
  border-color: var(--accent2);
  animation-duration: 8s;
  animation-direction: reverse;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.about__avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  z-index: 1;
  box-shadow: 0 0 40px rgba(224, 64, 251, 0.5);
}

.about__text p {
  color: var(--muted);
  margin-bottom: 1.2rem;
  font-size: 1.05rem;
}
.about__text strong { color: var(--text); }

/* ── CONTACT ───────────────────── */
.contact { background: var(--surface); }

.contact__links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.contact__card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem 2rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: rgba(255,255,255,0.02);
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  transition: all 0.25s;
}
.contact__card svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
}
.contact__card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 25px rgba(224, 64, 251, 0.2);
  transform: translateY(-3px);
  color: var(--accent);
}

/* ── FOOTER ────────────────────── */
.footer {
  padding: 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  font-family: var(--font-mono);
  border-top: 1px solid var(--border);
}

/* ── RESPONSIVE ────────────────── */
@media (max-width: 768px) {
  .nav__links { display: none; }

  .nav--open .nav__links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(10, 10, 18, 0.97);
    backdrop-filter: blur(16px);
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border);
  }

  .nav__burger { display: flex; }

  .music__grid {
    grid-template-columns: 1fr;
  }

  .about__content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .about__visual { margin: 0 auto; }
}