/* ==========================================================================
   RHK Tech Solutions — estilos customizados
   (Tailwind cobre utilitários; aqui ficam animações e detalhes de assinatura)
   ========================================================================== */

:root {
  --bg: #0A0A0A;
  --bg-light: #FAFAF8;
  --bg-card-light: #FFFFFF;
  --accent: #00E676;
  --accent-glow: #00FFA3;
  --surface: #132A1E;
  --card-dark: #0E1F16;
  --text-secondary: #8A8A8A;
  --text-dark: #111111;
  --text-gray: #6B6B6B;
  --border-light: #E8E8E4;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
}

::selection {
  background: var(--accent);
  color: #0A0A0A;
}

/* Foco de teclado visível */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent-glow);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Scrollbar sutil (progressive enhancement, sem afetar acessibilidade) */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: #0A0A0A; }
::-webkit-scrollbar-thumb { background: #1e1e1e; border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: #2a2a2a; }

/* ==========================================================================
   Logo — pulso de sinal entre R•H•K
   ========================================================================== */

.logo-dot {
  display: inline-block;
  color: var(--accent);
  animation: dotPulse 2.4s ease-in-out infinite;
}
.logo-dot:nth-of-type(2) { animation-delay: 0.3s; }

@keyframes dotPulse {
  0%, 100% { opacity: 0.55; transform: scale(1); }
  50%      { opacity: 1;    transform: scale(1.25); }
}

/* ==========================================================================
   Linha de sinal ao lado do CTA da hero
   ========================================================================== */

.signal-line {
  position: relative;
  overflow: hidden;
  height: 1px;
  flex: 1 1 auto;
  min-width: 48px;
  background: rgba(0, 230, 118, 0.18);
}
.signal-line::after {
  content: "";
  position: absolute;
  top: 0;
  left: -40%;
  width: 40%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
  animation: signalRun 2.6s linear infinite;
}
.signal-dot {
  position: relative;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
  flex: none;
}
.signal-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 999px;
  background: var(--accent);
  opacity: 0.35;
  animation: signalDotPing 2.4s ease-in-out infinite;
}

@keyframes signalRun {
  0%   { left: -40%; }
  100% { left: 100%; }
}
@keyframes signalDotPing {
  0%, 100% { transform: scale(1);   opacity: 0.35; }
  50%      { transform: scale(1.8); opacity: 0; }
}

/* ==========================================================================
   Cascata de entrada da hero
   ========================================================================== */

.hero-cascade {
  opacity: 0;
  transform: translateY(18px);
  animation: fadeUp 0.8s ease-out forwards;
}
.hero-cascade[data-delay="1"] { animation-delay: 0.1s; }
.hero-cascade[data-delay="2"] { animation-delay: 0.32s; }
.hero-cascade[data-delay="3"] { animation-delay: 0.54s; }
.hero-cascade[data-delay="4"] { animation-delay: 0.76s; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Scroll reveal (IntersectionObserver alterna .in-view)
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Reveal de seção inteira (bloco único), mais pronunciado que o .reveal de elemento */
.section-reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.9s ease-out, transform 0.9s ease-out;
}
.section-reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Botões
   ========================================================================== */

.btn-primary,
.btn-secondary {
  transition: transform 0.2s ease-out, box-shadow 0.2s ease-out, background-color 0.2s ease-out, border-color 0.2s ease-out, color 0.2s ease-out;
  will-change: transform;
}
.btn-primary:hover,
.btn-primary:focus-visible {
  transform: scale(1.03);
  box-shadow: 0 0 0 1px rgba(0, 230, 118, 0.4), 0 0 30px rgba(0, 255, 163, 0.35);
}
.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: var(--accent);
}

/* ==========================================================================
   Glow que segue o cursor na hero
   ========================================================================== */

.cursor-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.6s ease;
  background: radial-gradient(
    480px circle at var(--mx, 50%) var(--my, 30%),
    rgba(0, 255, 163, 0.10),
    transparent 65%
  );
}
.cursor-glow.is-active {
  opacity: 1;
}

/* ==========================================================================
   Cartões e superfícies
   ========================================================================== */

.card {
  background: var(--card-dark);
  border: 1px solid rgba(0, 230, 118, 0.15);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s ease-out, border-color 0.2s ease-out, box-shadow 0.2s ease-out;
}
.card:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 230, 118, 0.4);
  box-shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.4);
}

.portfolio-card {
  background: var(--bg-card-light);
  border: 1px solid var(--border-light);
  box-shadow: 0 1px 3px rgba(17, 17, 17, 0.04);
  transition: transform 0.2s ease-out, border-color 0.2s ease-out, box-shadow 0.2s ease-out;
}
.portfolio-card:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 230, 118, 0.35);
  box-shadow: 0 10px 30px -12px rgba(17, 17, 17, 0.12);
}

.glow-text {
  text-shadow: 0 0 24px rgba(0, 230, 118, 0.35);
}

/* ==========================================================================
   FAQ accordion
   ========================================================================== */

.faq-item summary::-webkit-details-marker { display: none; }
.faq-icon { transition: transform 0.3s ease-out; }
.faq-item[open] .faq-icon { transform: rotate(45deg); }
.faq-item .faq-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out, opacity 0.3s ease-out, padding 0.3s ease-out;
  opacity: 0;
}
.faq-item[open] .faq-panel {
  opacity: 1;
  max-height: 320px;
}

/* ==========================================================================
   Botão flutuante do WhatsApp
   ========================================================================== */

.whatsapp-float {
  animation: whatsappPulse 2.6s ease-in-out infinite;
}
@keyframes whatsappPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.45); }
  50%      { box-shadow: 0 0 0 10px rgba(0, 230, 118, 0); }
}

/* ==========================================================================
   Header — estado com fundo ao rolar
   ========================================================================== */

header.site-header {
  transition: background-color 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
}

/* ==========================================================================
   Menu mobile
   ========================================================================== */

.mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out;
}
.mobile-menu.open {
  max-height: 480px;
}

/* ==========================================================================
   prefers-reduced-motion — desliga tudo que se move
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .logo-dot,
  .signal-line::after,
  .signal-dot::after,
  .whatsapp-float {
    animation: none !important;
  }

  .hero-cascade {
    opacity: 1;
    transform: none;
    animation: none !important;
  }

  .reveal,
  .section-reveal {
    opacity: 1;
    transform: none;
    transition: none !important;
  }

  .btn-primary:hover,
  .btn-primary:focus-visible,
  .btn-secondary:hover,
  .btn-secondary:focus-visible,
  .card:hover,
  .portfolio-card:hover {
    transform: none;
  }

  .cursor-glow {
    display: none;
  }

  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}