/* ===================================================================
   Zeroizero — Estilo Base (Futurista + Gamificação) + SEO-friendly (performance e acessibilidade)
   =================================================================== */

:root {
  --color-bg: #0a0a0b;
  --color-surface: #121214;
  --color-surface-alt: #16161a;
  --color-text: #eaeaf0;
  --color-muted: #b1b1bb;
  --color-primary: #e50914; /* vermelho principal */
  --color-primary-700: #b2070f;
  --color-accent: #46eaff; /* acento futurista ciano */
  --color-border: #2a2a31;
  --shadow-soft: 0 10px 30px rgba(0,0,0,.3);
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --container: 1200px;
  --focus: 0 0 0 3px rgba(70,234,255,0.6);
  --transition-fast: 180ms ease;
  --transition-slow: 420ms ease;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--color-text);
  background: linear-gradient(180deg, #0a0a0b 0%, #0d0d10 100%);
}

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 1.25rem; }

/* Acessibilidade */
:focus-visible { outline: none; box-shadow: var(--focus); border-radius: 10px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,1px,1px); white-space: nowrap; border: 0; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(10,10,11,.65);
  border-bottom: 1px solid var(--color-border);
}
.header-container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { font-family: Orbitron, Arial, sans-serif; font-weight: 700; font-size: 1.25rem; color: #fff; text-decoration: none; letter-spacing: .5px; }
.brand .highlight { color: var(--color-primary); }

.btn-menu { background: none; border: 1px solid var(--color-border); color: #fff; border-radius: 12px; padding: .5rem; display: none; }
.btn-menu .icon { width: 24px; height: 24px; }

.main-nav .nav-list { list-style: none; margin: 0; padding: 0; display: flex; gap: 1rem; }
.nav-link { color: #eaeaf0; text-decoration: none; padding: .5rem .75rem; border-radius: 10px; transition: background var(--transition-fast); }
.nav-link:hover { background: rgba(229,9,20,.1); }

/* Hero */
.hero-section { padding: 6rem 0 4rem; position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 2rem; }
.hero-title { font-family: Orbitron, Arial, sans-serif; font-size: clamp(1.6rem, 1.2rem + 2.2vw, 2.6rem); margin: 0 0 .75rem; }
.hero-subtitle { color: var(--color-muted); margin: 0 0 1.5rem; }

.btn { display: inline-block; border-radius: 14px; padding: .85rem 1.15rem; text-decoration: none; font-weight: 600; border: 1px solid transparent; transition: transform var(--transition-fast), background var(--transition-fast), border var(--transition-fast); }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-700); transform: translateY(-1px); }
.btn-ghost { color: #fff; border-color: var(--color-border); }
.btn-ghost:hover { background: rgba(255,255,255,.06); }

.progress-wrapper { margin-top: 2rem; display: grid; gap: .75rem; }
.progress-label { display: flex; align-items: center; justify-content: space-between; font-size: .95rem; color: var(--color-muted); }
.progress-bar { height: 12px; background: #0e0e11; border: 1px solid var(--color-border); border-radius: 999px; overflow: hidden; }
.progress-fill { display: block; height: 100%; background: linear-gradient(90deg, var(--color-primary), #ff4d5a); transition: width 800ms ease; }

.hero-art { position: relative; height: 380px; }
.neon-disc { position: absolute; inset: auto 0 0 auto; right: 10%; width: 240px; height: 240px; border-radius: 50%; background: radial-gradient(circle at 30% 30%, rgba(229,9,20,.65), rgba(178,7,15,.25) 60%, transparent 65%); filter: blur(10px); }
.grid-glow { position: absolute; inset: 0; background: radial-gradient(650px 180px at 80% 70%, rgba(70,234,255,.25), transparent 60%); pointer-events: none; }
.floating-chips { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: .5rem; }
.chip { border: 1px solid var(--color-border); padding: .35rem .6rem; border-radius: 999px; font-size: .8rem; color: #d9f9ff; background: rgba(70,234,255,.06); backdrop-filter: blur(3px); }

/* Section */
.section { padding: 4rem 0; }
.section.alt { background: var(--color-surface); }
.section-title { font-family: Orbitron, Arial, sans-serif; margin: 0 0 1.25rem; font-size: 1.6rem; }

.cards-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.card { background: var(--color-surface-alt); border: 1px solid var(--color-border); border-radius: var(--radius-2xl); padding: 1.25rem; box-shadow: var(--shadow-soft); transition: transform var(--transition-fast), border var(--transition-fast); }
.card:hover { transform: translateY(-4px); border-color: rgba(229,9,20,.45); }
.card-title { margin: .5rem 0 .25rem; font-size: 1.15rem; }
.card-text { color: var(--color-muted); margin: 0 0 1rem; }
.card-icon { display: grid; place-items: center; }
.icon-lg { width: 44px; height: 44px; }
.icon-md { width: 34px; height: 34px; }
.btn-outline { background: transparent; color: #fff; border-color: var(--color-border); }
.btn-outline:hover { border-color: rgba(229,9,20,.45); background: rgba(229,9,20,.08); }

.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.feature { background: var(--color-surface-alt); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: 1rem; transition: transform var(--transition-fast), border var(--transition-fast); }
.feature:hover { transform: translateY(-3px); border-color: rgba(70,234,255,.45); }
.feature-title { margin: .5rem 0 .25rem; }
.feature-text { color: var(--color-muted); }

/* Form */
.contact-form { display: grid; gap: 1rem; }
.form-field { display: grid; gap: .5rem; }
input, textarea { width: 100%; border: 1px solid var(--color-border); border-radius: 12px; background: #0e0e11; color: #fff; padding: .85rem 1rem; }
input::placeholder, textarea::placeholder { color: #6c6c76; }
.field-hint { color: var(--color-muted); font-size: .85rem; }
.btn-submit { margin-top: .5rem; }

.contact-info { margin-top: 1.5rem; color: var(--color-muted); }

/* Footer */
.site-footer { border-top: 1px solid var(--color-border); background: #0c0c0f; padding: 1.25rem 0; }
.footer-grid { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.footer-link { color: #c9c9d3; text-decoration: none; margin-left: .75rem; }
.footer-link:hover { color: #fff; text-decoration: underline; }

/* FAB WhatsApp */
.whatsapp-fab { position: fixed; right: 16px; bottom: 16px; z-index: 60; display: grid; gap: .5rem; justify-items: end; }
.fab-main { width: 56px; height: 56px; border-radius: 50%; border: none; background: var(--color-primary); color: #fff; box-shadow: var(--shadow-soft); cursor: pointer; }
.fab-actions { display: none; gap: .5rem; }
.fab-item { display: inline-block; padding: .5rem .75rem; border-radius: 12px; background: var(--color-surface-alt); border: 1px solid var(--color-border); color: #fff; text-decoration: none; }
.whatsapp-fab.open .fab-actions { display: grid; }

/* Responsividade */
@media (max-width: 1024px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { height: 280px; }
}
@media (max-width: 640px) {
  .features-grid { grid-template-columns: 1fr; }
  .btn-menu { display: inline-grid; }
  .main-nav { display: none; position: absolute; top: 72px; right: 16px; background: #0e0e11; border: 1px solid var(--color-border); border-radius: 14px; box-shadow: var(--shadow-soft); }
  .main-nav.open { display: block; }
  .main-nav .nav-list { flex-direction: column; padding: .5rem; }
}