/* ============================================================
   Aura Marketing Sound — Design System
   Paleta: azul claro + branco + vibe futurista (glow, glass, grid)
   ============================================================ */

:root {
  /* Paleta principal */
  --c-bg:          #f0f9ff;        /* sky-50  */
  --c-bg-2:        #e0f2fe;        /* sky-100 */
  --c-surface:     #ffffff;
  --c-surface-2:   #f8fbff;
  --c-border:      #dbeafe;        /* blue-100 */
  --c-border-soft: #e0f2fe;

  --c-primary:     #0ea5e9;        /* sky-500 */
  --c-primary-2:   #0284c7;        /* sky-600 */
  --c-primary-3:   #38bdf8;        /* sky-400 */
  --c-accent:      #22d3ee;        /* cyan-400 */
  --c-accent-2:    #06b6d4;        /* cyan-500 */

  --c-text:        #0c1c2e;
  --c-text-soft:   #1e3a52;
  --c-text-muted:  #64748b;

  --c-success:     #10b981;
  --c-warning:     #f59e0b;
  --c-danger:      #ef4444;

  /* Gradientes */
  --g-hero: radial-gradient(1200px 800px at 15% 0%, #bae6fd 0%, transparent 55%),
            radial-gradient(900px 600px at 100% 40%, #cffafe 0%, transparent 60%),
            linear-gradient(180deg, #f0f9ff 0%, #ffffff 100%);
  --g-primary: linear-gradient(135deg, #0ea5e9 0%, #22d3ee 100%);
  --g-card:    linear-gradient(160deg, rgba(255,255,255,0.9) 0%, rgba(240,249,255,0.8) 100%);
  --g-glow:    radial-gradient(circle, rgba(14,165,233,0.45) 0%, transparent 70%);

  /* Shadows */
  --sh-sm: 0 1px 2px rgba(14,165,233,0.08);
  --sh-md: 0 4px 20px rgba(14,165,233,0.12), 0 1px 3px rgba(14,165,233,0.06);
  --sh-lg: 0 20px 60px rgba(14,165,233,0.18), 0 8px 24px rgba(14,165,233,0.10);
  --sh-glow: 0 0 40px rgba(14,165,233,0.35);

  --r-sm: 0.5rem;
  --r-md: 0.85rem;
  --r-lg: 1.25rem;
  --r-xl: 2rem;
  --r-pill: 999px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-text);
  background: var(--c-bg);
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Grid futurista de fundo */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(14,165,233,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14,165,233,0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 30%, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, black 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

a { color: var(--c-primary-2); text-decoration: none; }
a:hover { color: var(--c-primary); }

h1, h2, h3, h4 {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.5rem, 5.5vw, 4.5rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.3rem, 2.2vw, 1.75rem); }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.75);
  border-bottom: 1px solid var(--c-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--c-text);
}

.logo__mark {
  width: 38px; height: 38px;
  border-radius: var(--r-md);
  background: var(--g-primary);
  display: grid; place-items: center;
  box-shadow: var(--sh-glow);
  color: #fff;
  font-size: 1.2rem;
}

.nav { display: flex; gap: 1.75rem; align-items: center; }
.nav a {
  color: var(--c-text-soft);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav a:hover { color: var(--c-primary-2); }

@media (max-width: 768px) {
  .nav { display: none; }
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(.2,.8,.2,1);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--g-primary);
  color: #fff;
  box-shadow: 0 10px 30px rgba(14,165,233,0.35), 0 2px 6px rgba(14,165,233,0.2);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 50px rgba(14,165,233,0.45), 0 4px 10px rgba(14,165,233,0.25);
  color: #fff;
}

.btn-outline {
  background: rgba(255,255,255,0.9);
  color: var(--c-text);
  border-color: var(--c-border);
}
.btn-outline:hover {
  border-color: var(--c-primary-3);
  background: #fff;
  color: var(--c-primary-2);
}

.btn-ghost {
  background: transparent;
  color: var(--c-text-soft);
  padding: 0.5rem 0.9rem;
}
.btn-ghost:hover { background: var(--c-bg-2); color: var(--c-primary-2); }

.btn-lg  { padding: 1.05rem 2rem; font-size: 1.08rem; }
.btn-sm  { padding: 0.55rem 1rem; font-size: 0.88rem; }
.btn-block { display: flex; width: 100%; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  padding: 5rem 0 6rem;
  background: var(--g-hero);
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: var(--g-glow);
  top: 30%; right: -150px;
  filter: blur(40px);
  animation: float 10s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50%      { transform: translateY(-30px) scale(1.05); }
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1rem;
  border-radius: var(--r-pill);
  background: rgba(14,165,233,0.1);
  border: 1px solid rgba(14,165,233,0.2);
  color: var(--c-primary-2);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero__badge::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--c-success);
  box-shadow: 0 0 10px var(--c-success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%     { opacity: 0.6; transform: scale(1.2); }
}

.hero h1 {
  max-width: 14ch;
  margin-bottom: 1rem;
}

.hero h1 .gradient {
  background: var(--g-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__subtitle {
  font-size: 1.2rem;
  color: var(--c-text-muted);
  max-width: 60ch;
  margin-bottom: 2.5rem;
}

.hero__cta-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero__trust {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--c-text-muted);
}
.hero__trust span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.hero__trust i { color: var(--c-success); }

/* ============================================================
   Sections
   ============================================================ */
.section {
  padding: 5rem 0;
  position: relative;
}

.section__head {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.section__eyebrow {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  border-radius: var(--r-pill);
  background: rgba(14,165,233,0.08);
  color: var(--c-primary-2);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section__subtitle {
  color: var(--c-text-muted);
  font-size: 1.1rem;
  margin-top: 1rem;
}

/* ============================================================
   Cards (genéricos)
   ============================================================ */
.card {
  background: var(--g-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 1.75rem;
  box-shadow: var(--sh-sm);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  backdrop-filter: blur(10px);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-md);
  border-color: var(--c-primary-3);
}

.grid {
  display: grid;
  gap: 1.5rem;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; } }

/* Ritmo card */
.genre-card {
  position: relative;
  padding: 1.5rem 1.25rem;
  text-align: center;
  cursor: pointer;
}
.genre-card__icon {
  width: 52px; height: 52px;
  border-radius: var(--r-md);
  background: var(--g-primary);
  display: grid; place-items: center;
  margin: 0 auto 0.9rem;
  color: #fff;
  font-size: 1.3rem;
  box-shadow: var(--sh-glow);
}
.genre-card__title {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.2rem;
}
.genre-card__desc {
  font-size: 0.82rem;
  color: var(--c-text-muted);
}

/* Feature / step card */
.feature {
  padding: 2rem 1.5rem;
  text-align: left;
}
.feature__icon {
  width: 56px; height: 56px;
  border-radius: var(--r-md);
  background: rgba(14,165,233,0.12);
  color: var(--c-primary-2);
  display: grid; place-items: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}
.feature__num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--g-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 0.5rem;
  display: block;
}

/* ============================================================
   Audio demo player
   ============================================================ */
.demo-player {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--c-surface);
  border-radius: var(--r-md);
  border: 1px solid var(--c-border);
  transition: all 0.3s;
}
.demo-player:hover { border-color: var(--c-primary-3); transform: translateX(4px); }
.demo-player__btn {
  flex: 0 0 auto;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--g-primary);
  color: #fff;
  display: grid; place-items: center;
  cursor: pointer;
  border: none;
  transition: transform 0.2s;
  box-shadow: var(--sh-glow);
}
.demo-player__btn:hover { transform: scale(1.08); }
.demo-player__info { flex: 1; min-width: 0; }
.demo-player__title {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 2px;
  color: var(--c-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.demo-player__genre {
  font-size: 0.78rem;
  color: var(--c-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.demo-player__wave {
  flex: 2;
  height: 32px;
  display: flex;
  align-items: center;
  gap: 2px;
}
.demo-player__wave span {
  flex: 1;
  background: var(--c-primary-3);
  border-radius: 2px;
  opacity: 0.5;
  animation: wave 1.5s ease-in-out infinite;
  animation-play-state: paused;
}
.demo-player.playing .demo-player__wave span {
  animation-play-state: running;
  opacity: 1;
}
.demo-player__wave span:nth-child(odd)  { animation-delay: 0.1s; }
.demo-player__wave span:nth-child(3n)   { animation-delay: 0.2s; }
.demo-player__wave span:nth-child(4n)   { animation-delay: 0.3s; }

@keyframes wave {
  0%,100% { height: 30%; }
  50%     { height: 100%; }
}

/* ============================================================
   Pricing
   ============================================================ */
.price-card {
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
  padding: 3rem 2.5rem;
  position: relative;
  overflow: hidden;
}
.price-card::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: var(--g-primary);
  border-radius: inherit;
  z-index: -1;
  opacity: 0.6;
  filter: blur(20px);
}
.price-card__tag {
  display: inline-block;
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  color: #fff;
  padding: 0.35rem 0.9rem;
  border-radius: var(--r-pill);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  box-shadow: 0 6px 18px rgba(239,68,68,0.25);
}
.price-card__old {
  font-size: 1.2rem;
  color: var(--c-text-muted);
  text-decoration: line-through;
  margin-bottom: 0.3rem;
}
.price-card__value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 4rem;
  font-weight: 700;
  background: var(--g-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin: 0.3rem 0 0.5rem;
}
.price-card__value small { font-size: 1.5rem; vertical-align: top; }
.price-card__meta {
  color: var(--c-text-muted);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}
.price-card__list {
  text-align: left;
  padding: 0;
  list-style: none;
  margin: 0 0 2rem;
}
.price-card__list li {
  padding: 0.55rem 0;
  color: var(--c-text-soft);
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.price-card__list li i { color: var(--c-success); flex: 0 0 auto; }

/* ============================================================
   Forms
   ============================================================ */
.form-group {
  margin-bottom: 1.25rem;
}
.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--c-text-soft);
  margin-bottom: 0.45rem;
}
.form-group .hint {
  font-size: 0.78rem;
  color: var(--c-text-muted);
  margin-top: 0.3rem;
}
.input, .textarea, .select {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  color: var(--c-text);
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.input:focus, .textarea:focus, .select:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(14,165,233,0.15);
}
.textarea { min-height: 120px; resize: vertical; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

/* Radio/chip style */
.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.chip-group input[type=radio] { display: none; }
.chip-group label {
  cursor: pointer;
  padding: 0.55rem 1rem;
  border-radius: var(--r-pill);
  background: #fff;
  border: 1px solid var(--c-border);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--c-text-soft);
  margin: 0;
  transition: all 0.2s;
  user-select: none;
}
.chip-group label:hover { border-color: var(--c-primary-3); }
.chip-group input:checked + label {
  background: var(--g-primary);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--sh-glow);
}

/* ============================================================
   Alert
   ============================================================ */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--r-md);
  margin-bottom: 1.5rem;
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  font-size: 0.95rem;
}
.alert-success { background: rgba(16,185,129,0.1); color: #065f46; border: 1px solid rgba(16,185,129,0.2); }
.alert-error   { background: rgba(239,68,68,0.1);  color: #991b1b; border: 1px solid rgba(239,68,68,0.2); }
.alert-info    { background: rgba(14,165,233,0.08);color: #0c4a6e; border: 1px solid rgba(14,165,233,0.2); }
.alert-warning { background: rgba(245,158,11,0.1); color: #78350f; border: 1px solid rgba(245,158,11,0.2); }

/* ============================================================
   FAQ accordion
   ============================================================ */
.faq-item {
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  margin-bottom: 0.8rem;
  background: var(--c-surface);
  overflow: hidden;
  transition: border-color 0.2s;
}
.faq-item:hover { border-color: var(--c-primary-3); }
.faq-item summary {
  cursor: pointer;
  padding: 1.15rem 1.25rem;
  list-style: none;
  font-weight: 600;
  color: var(--c-text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  color: var(--c-primary);
  font-size: 1.5rem;
  font-weight: 300;
  transition: transform 0.2s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item__body {
  padding: 0 1.25rem 1.25rem;
  color: var(--c-text-muted);
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  margin-top: 5rem;
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--c-border);
  background: var(--c-surface-2);
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}
.site-footer h4 {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  margin-bottom: 1rem;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 0.5rem; }
.site-footer li a {
  color: var(--c-text-soft);
  font-size: 0.95rem;
}
.site-footer__bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--c-border);
  color: var(--c-text-muted);
  font-size: 0.85rem;
  text-align: center;
}

/* ============================================================
   Utilities
   ============================================================ */
.text-center { text-align: center; }
.text-muted  { color: var(--c-text-muted); }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

/* ============================================================
   Stage / status (minha_musica)
   ============================================================ */
.stage {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: var(--r-md);
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  margin-bottom: 0.8rem;
  transition: all 0.3s;
}
.stage.done   { border-color: #a7f3d0; background: #ecfdf5; }
.stage.active { border-color: var(--c-primary-3); background: linear-gradient(135deg, #e0f2fe, #ffffff); box-shadow: var(--sh-glow); }
.stage__icon {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--c-bg-2);
  color: var(--c-text-muted);
  font-size: 1.1rem;
  flex: 0 0 auto;
}
.stage.done   .stage__icon { background: #10b981; color: #fff; }
.stage.active .stage__icon { background: var(--g-primary); color: #fff; animation: pulse 2s infinite; }

.player-big {
  padding: 2rem;
  text-align: center;
  background: var(--g-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  margin-bottom: 1rem;
}
.player-big audio {
  width: 100%;
  margin-top: 1rem;
}