/* RN6 Solutions — tema compartilhado (landing + chat) */

:root {
  /* Superfícies */
  --bg: #0b0f17;
  --bg-2: #0e1320;
  --bg-2-glass: rgba(14, 19, 32, .6);
  --panel: #121826;
  --panel-2: #161e2f;
  --border: #232d42;

  /* Texto */
  --text: #e8edf6;
  --muted: #8b97ad;
  --muted-2: #5d6880;

  /* Marca */
  --brand-a: #2f7bff;
  --brand-b: #00c2ff;
  --brand: linear-gradient(135deg, var(--brand-a), var(--brand-b));
  --brand-user: linear-gradient(135deg, var(--brand-a), #1f6cf0);
  --brand-soft: rgba(47, 123, 255, .12);
  --brand-line: rgba(47, 123, 255, .3);
  --brand-light: #9cc3ff;

  /* Estados */
  --success: #4ade80;
  --danger: #f3a5a5;

  /* Brilho e sombras */
  --glow-sm: 0 6px 20px rgba(47, 123, 255, .35);
  --glow-lg: 0 0 0 1px rgba(0, 194, 255, .45), 0 10px 30px rgba(0, 194, 255, .45), 0 0 56px rgba(47, 123, 255, .35);
  --shadow-lg: 0 30px 80px rgba(0, 0, 0, .45);

  /* Forma e tipografia */
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --ease: cubic-bezier(.2, .7, .2, 1);

  /* Fundo */
  --grid-size: 48px;
  --grid-line: rgba(255, 255, 255, .035);
  --header-bg: rgba(18, 24, 38, .7);
  --glow-a: rgba(47, 123, 255, .16);
  --glow-b: rgba(0, 194, 255, .11);

  color-scheme: dark;
}

/* Tema claro (ativado com data-theme="light" no <html>) */
:root[data-theme="light"] {
  --bg: #f5f7fb;
  --bg-2: #eef2f8;
  --bg-2-glass: rgba(238, 242, 248, .7);
  --panel: #ffffff;
  --panel-2: #f1f4f9;
  --border: #dde3ee;

  --text: #0f172a;
  --muted: #5b6b84;
  --muted-2: #8a97ad;

  --brand-soft: rgba(47, 123, 255, .1);
  --brand-line: rgba(47, 123, 255, .28);
  --brand-light: #1f6cf0;

  --success: #16a34a;
  --danger: #dc2626;

  --glow-sm: 0 6px 18px rgba(47, 123, 255, .25);
  --shadow-lg: 0 24px 60px rgba(15, 23, 42, .12);

  --grid-line: rgba(15, 23, 42, .05);
  --header-bg: rgba(255, 255, 255, .75);
  --glow-a: rgba(47, 123, 255, .12);
  --glow-b: rgba(0, 194, 255, .1);

  color-scheme: light;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}

:focus-visible { outline: 2px solid var(--brand-b); outline-offset: 3px; border-radius: 6px; }

.grad-text {
  background: var(--brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Fundo: gradiente radial + malha animada ---------- */
.bg-fx {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(900px 600px at 12% -10%, var(--glow-a), transparent 60%),
    radial-gradient(800px 560px at 95% 8%, var(--glow-b), transparent 60%),
    radial-gradient(1000px 700px at 50% 120%, rgba(47, 123, 255, .08), transparent 60%);
}
.bg-fx .grid {
  position: absolute;
  inset: 0;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 25%, transparent 80%);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 25%, transparent 80%);
}
.bg-fx .grid::before {
  content: '';
  position: absolute;
  inset: calc(var(--grid-size) * -1) 0 0 calc(var(--grid-size) * -1);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  animation: grid-drift 40s linear infinite;
  will-change: transform;
}
@keyframes grid-drift {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(var(--grid-size), var(--grid-size), 0); }
}

/* O atributo hidden sempre esconde, mesmo em elementos com display:flex/grid. */
[hidden] { display: none !important; }

/* ---------- Logo ---------- */
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.logo-icon {
  width: 36px; height: 36px;
  flex-shrink: 0;
  filter: drop-shadow(0 4px 12px rgba(47, 123, 255, .35));
}
.brand-logo { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; }
.brand-name { font-weight: 800; font-size: 18px; letter-spacing: -.3px; line-height: 1; white-space: nowrap; }
.brand-name span { font-weight: 500; color: var(--muted); }

/* ---------- Botões ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 22px;
  border-radius: 12px;
  font: inherit; font-weight: 600; font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .2s, background .2s, opacity .2s;
}
.btn svg { width: 18px; height: 18px; }

.btn-primary {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--brand);
  color: #fff;
  border: 0;
  box-shadow: var(--glow-sm);
}
.btn-primary::after {
  content: '';
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, .35) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform .7s var(--ease);
}
.btn-primary:hover:not(:disabled) { transform: translateY(-1px) scale(1.03); box-shadow: var(--glow-lg); }
.btn-primary:hover:not(:disabled)::after { transform: translateX(120%); }
.btn-primary:active:not(:disabled) { transform: scale(.98); }
.btn-primary:disabled { opacity: .35; cursor: default; box-shadow: none; }

.btn-ghost { background: rgba(255, 255, 255, .03); color: var(--text); border-color: var(--border); }
.btn-ghost:hover {
  border-color: var(--brand-a);
  background: rgba(47, 123, 255, .08);
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 0 24px rgba(47, 123, 255, .18);
}

/* ---------- Movimento reduzido ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .bg-fx .grid::before { animation: none; }
}