:root{
  --bg: #070707;
  --surface: #0f0f0f;
  --muted: #A6A6A6;
  --text: #E6E6E6;
  --accent: #FF4D4D;
  --glass: rgba(255,255,255,0.03);
  --radius: 12px;
  --container: 1150px;
  --gap: 20px;
}

* { box-sizing: border-box; }
html,body { height:100%; }
body {
  margin:0;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

/* Container */
.container {
  width: min(96%, var(--container));
  margin: 0 auto;
}

/* HEADER */
.site-header {
  position: sticky;
  top:0;
  z-index:40;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  backdrop-filter: blur(6px);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
}
.header-inner {
  display:flex;
  align-items:center;
  gap: var(--gap);
  padding: 14px 0;
}
.brand {
  display:flex;
  gap:10px;
  align-items:center;
  color:var(--text);
  text-decoration:none;
  font-weight:600;
}
.brand strong { color:var(--accent); font-weight:800; }
.nav { margin-left: 12px; display:flex; gap:14px; align-items:center; }
.nav-link {
  color:var(--muted);
  text-decoration:none;
  font-weight:500;
  padding:8px 10px;
  border-radius:8px;
  transition: all .18s ease;
}
.nav-link:hover { color:var(--text); background: rgba(255,255,255,0.02); }
.nav-link.active { color:var(--accent); background: rgba(255,77,77,0.06); border:1px solid rgba(255,77,77,0.06); }

/* Buttons */
.btn { border:0; cursor:pointer; font-weight:600; padding:8px 14px; border-radius:8px; }
.btn-ghost { background:transparent; color:var(--text); border:1px solid rgba(255,255,255,0.03); }
.btn-primary { background:var(--accent); color:#0b0b0b; }
.btn-cta { display:inline-block; padding:12px 18px; border-radius:10px; background:linear-gradient(90deg,var(--accent),#ff2d2d); color:#0b0b0b; text-decoration:none; font-weight:700; }

/* HERO */
.hero {
  display:grid;
  grid-template-columns: 1fr 380px;
  gap: 40px;
  align-items:center;
  padding: 56px 0;
}
.hero-title { font-size: clamp(28px, 3.6vw, 44px); line-height:1.02; margin-bottom:14px; color:var(--text); }
.hero-desc { color:var(--muted); max-width:640px; margin-bottom:20px; font-size:16px; }
.hero-features { list-style:none; display:flex; gap:18px; color:var(--muted); margin-top:18px; padding-left:0; }
.hero-features li { font-size:14px; }

/* RIGHT MOCKUP */
.stacked-covers {
  width:100%;
  height:320px;
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
}
.stacked-covers img {
  width:200px;
  height:200px;
  object-fit:cover;
  border-radius:14px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.7);
  position:absolute;
  transform-origin:center;
  transition:transform .35s ease, box-shadow .35s ease;
}
.stacked-covers img:nth-child(1){ transform: translateX(-80px) rotate(-8deg) scale(.98); z-index:3; }
.stacked-covers img:nth-child(2){ transform: translateX(0px) rotate(2deg); z-index:4; }
.stacked-covers img:nth-child(3){ transform: translateX(80px) rotate(10deg) scale(.96); z-index:2; }
.stacked-covers img:hover { transform: translateY(-8px) scale(1.02); }

/* SECTION DARK */
.section-dark { background: linear-gradient(180deg, rgba(255,255,255,0.01), rgba(0,0,0,0.01)); padding:40px 0; border-top:1px solid rgba(255,255,255,0.02); }

/* CARDS WRAP */
.section-header { display:flex; justify-content:space-between; align-items:center; margin-bottom:16px; }
.controls { display:flex; gap:8px; align-items:center; }

.cards-wrap {
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap:18px;
  align-items:start;
  outline:none;
}
.track-card {
  background:var(--surface);
  border-radius:12px;
  padding:12px;
  display:flex;
  gap:12px;
  align-items:center;
  border:1px solid rgba(255,255,255,0.02);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s;
}
.track-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.7);
  border-color: rgba(255,77,77,0.12);
}
.track-card .cover { width:76px; height:76px; border-radius:8px; object-fit:cover; flex-shrink:0; }
.meta { flex:1; min-width:0; }
.track-title { font-size:15px; margin-bottom:4px; color:var(--text); }
.artist { font-size:13px; color:var(--muted); }
.mini-btn { background:transparent; color:var(--muted); border:1px solid rgba(255,255,255,0.03); padding:8px 10px; border-radius:8px; }

/* ABOUT */
.about { padding: 44px 0; color:var(--muted); }
.benefits-grid { display:grid; grid-template-columns: repeat(3,1fr); gap:20px; margin-top:18px; }
.benefit { background: linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.00)); padding:18px; border-radius:12px; border:1px solid rgba(255,255,255,0.02); }
.benefit h3 { color:var(--text); margin-bottom:8px; }

/* FOOTER */
.site-footer { padding:20px 0; border-top:1px solid rgba(255,255,255,0.03); color:var(--muted); }
.footer-nav a { color:var(--muted); text-decoration:none; margin-left:12px; }

/* MODAL */
.modal-backdrop {
  position:fixed; inset:0; display:none; align-items:center; justify-content:center; z-index:80;
  background:linear-gradient(180deg, rgba(0,0,0,0.6), rgba(0,0,0,0.75));
  padding: 28px;
}
.modal-backdrop.active { display:flex; }

.modal {
  width:100%; max-width:520px; background:var(--surface); padding:22px; border-radius:14px; position:relative;
  border:1px solid rgba(255,255,255,0.03);
}
.modal-close { position:absolute; right:12px; top:12px; background:transparent; border:0; color:var(--muted); font-size:18px; cursor:pointer; }
.auth-form label { display:block; margin-bottom:12px; color:var(--muted); font-size:14px; }
.auth-form input { width:100%; padding:12px 10px; border-radius:8px; border:1px solid rgba(255,255,255,0.03); background:transparent; color:var(--text); }
.form-actions { display:flex; gap:10px; margin-top:12px; justify-content:flex-end; }

/* Responsivo */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding:40px 0; }
  .stacked-covers { height:240px; margin-top:20px; }
  .cards-wrap { grid-template-columns: repeat(2,1fr); }
  .benefits-grid { grid-template-columns: 1fr; }
}

@media (max-width:560px) {
  .cards-wrap { grid-template-columns: 1fr; }
  .nav { display:none; }
  .header-inner { justify-content:space-between; }
}

.modal-layout {
  display: flex;
  gap: 40px;
  align-items: center;
  justify-content: center;
}

.modal-logo-area {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.modal-logo-area .logo-text {
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
  margin-top: 10px;
}

.modal-brand svg {
  width: 85px;
  height: 85px;
}

/* MODAL DE BLOQUEIO */
.modal-block {
  width: 100%;
  max-width: 480px;
  background: var(--surface);
  padding: 28px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.04);
  position: relative;
  text-align: center;
}

#musicBlockBackdrop {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 90;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(6px);
}

#musicBlockBackdrop.active {
  display: flex;
}

.block-logo svg {
  margin-bottom: 10px;
  filter: drop-shadow(0 0 8px rgba(255,77,77,0.3));
}

.block-title {
  margin: 0;
  font-size: 32px;
}

.block-title strong {
  color: var(--accent);
}

.block-text {
  color: var(--muted);
  margin: 16px 0 22px;
  font-size: 15px;
  line-height: 1.5;
}

.block-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.modal-block .modal-close {
  position: absolute;
  right: 14px;
  top: 14px;
  background: transparent;
  border: 0;
  color: var(--muted);
  font-size: 20px;
  cursor: pointer;
}

.demo-player {
  padding: 50px 0;
}

.demo-title {
  font-size: 26px;
  margin-bottom: 20px;
}

.audio-box {
  background: var(--surface);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: 0 0 20px rgba(0,0,0,0.4);
}

.audio-box .info h3 {
  margin: 0;
  font-size: 20px;
}

.audio-box .info p {
  margin-top: 4px;
  color: var(--muted);
  font-size: 14px;
}

.controls {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 18px;
}

.controls button {
  background: var(--accent);
  color: #0b0b0b;
  border: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
}

#progressBar {
  flex: 1;
}

#volumeControl {
  width: 80px;
}



.demo-content {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 20px;
  background: #111;
  padding: 20px;
  border-radius: 12px;
}

.demo-cover img {
  width: 180px;
  height: 180px;
  object-fit: cover;
  border-radius: 12px;
}

.audio-box {
  flex: 1;
}

.demo-music-title {
  font-size: 1.8rem;
  font-weight: bold;
  margin: 0;
}

.demo-artist {
  color: #ff3b3b;
  margin: 4px 0 10px;
}

.demo-desc {
  font-size: 0.9rem;
  color: #ccc;
  margin-bottom: 15px;
}

.controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

#progressBar {
  flex: 1;
}