/* =========================================================
   BitRecoveryAid — camada base
   tokens, reset, tipografia, layout, cabeçalho, rodapé
   ========================================================= */

:root {
  /* superfícies */
  --bg: #050b09;
  --bg-deep: #030706;
  --bg-raise: #091511;
  --panel: rgba(255, 255, 255, 0.034);
  --panel-strong: rgba(255, 255, 255, 0.06);
  --panel-solid: #0c1814;
  --line: rgba(233, 255, 243, 0.09);
  --line-strong: rgba(233, 255, 243, 0.16);

  /* tinta */
  --ink: #eaf5ee;
  --ink-dim: #b9cdc2;
  --muted: #8ba296;
  --faint: #667a71;

  /* acentos */
  --green: #46d17f;
  --green-deep: #14a058;
  --green-soft: #93f0b0;
  --coral: #ff5c6b;
  --coral-deep: #d6455a;
  --amber: #ffa05a;
  --violet: #9d8cff;

  --grad-brand: linear-gradient(135deg, #14a058 0%, #46d17f 48%, #93f0b0 100%);
  --grad-hot: linear-gradient(135deg, #d6455a 0%, #ff5c6b 45%, #ffa05a 100%);
  --grad-mix: linear-gradient(120deg, #46d17f 0%, #93f0b0 30%, #ff8d7a 78%, #ffa05a 100%);

  /* níveis */
  --lv-1: #6fe3a0;
  --lv-2: #ffc46b;
  --lv-3: #ff7f8f;

  /* forma */
  --r-xs: 8px;
  --r-sm: 12px;
  --r-md: 18px;
  --r-lg: 26px;
  --r-xl: 36px;
  --r-pill: 999px;

  /* sombra e brilho */
  --sh-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
  --sh-md: 0 18px 40px -22px rgba(0, 0, 0, 0.85);
  --sh-lg: 0 46px 90px -40px rgba(0, 0, 0, 0.92);
  --glow-green: 0 0 0 1px rgba(70, 209, 127, 0.25), 0 18px 50px -20px rgba(70, 209, 127, 0.45);
  --glow-coral: 0 0 0 1px rgba(255, 92, 107, 0.25), 0 18px 50px -20px rgba(255, 92, 107, 0.4);

  /* tipografia */
  --font-display: "Outfit", "Segoe UI Variable Display", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-ipa: "Gentium Plus", "Charis SIL", "Doulos SIL", "Segoe UI", "Lucida Sans Unicode", "Arial Unicode MS", serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", ui-monospace, "SFMono-Regular", Consolas, monospace;

  /* medidas */
  --shell: 1220px;
  --shell-narrow: 780px;
  --head-h: 72px;
  --ease: cubic-bezier(0.22, 0.68, 0.24, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

/* componentes definem display próprio e venceriam a regra do navegador */
[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--head-h) + 24px);
}

body {
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0125rem;
  line-height: 1.68;
  font-synthesis-weight: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* atmosfera global: camadas fixas de luz + granulado */
.atmos {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(60rem 42rem at 12% -12%, rgba(20, 160, 88, 0.3), transparent 62%),
    radial-gradient(48rem 38rem at 92% 4%, rgba(255, 92, 107, 0.16), transparent 60%),
    radial-gradient(70rem 50rem at 50% 108%, rgba(70, 209, 127, 0.14), transparent 65%),
    linear-gradient(180deg, #050d0a 0%, #040907 45%, #030706 100%);
}

.atmos::after {
  content: "";
  position: absolute;
  inset: -50%;
  opacity: 0.4;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.34'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

.atmos-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 76px 76px;
  mask-image: radial-gradient(74% 58% at 50% 12%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(74% 58% at 50% 12%, #000 0%, transparent 78%);
}

/* ---------- tipografia ---------- */

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.024em;
  color: #fff;
  text-wrap: balance;
}

h1 { font-size: clamp(2.35rem, 6.2vw, 4.4rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.85rem); }
h3 { font-size: clamp(1.22rem, 2.1vw, 1.6rem); }
h4 { font-size: 1.08rem; letter-spacing: -0.012em; }

p { text-wrap: pretty; }

a {
  color: var(--green-soft);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}

a:hover { color: #fff; }

strong, b { color: #fff; font-weight: 650; }

em { color: var(--ink-dim); }

::selection {
  background: rgba(70, 209, 127, 0.3);
  color: #fff;
}

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

img, svg, picture {
  display: block;
  max-width: 100%;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button { background: none; border: 0; cursor: pointer; }

hr {
  border: 0;
  height: 1px;
  background: var(--line);
  margin: 2.5rem 0;
}

/* ---------- layout ---------- */

.shell {
  width: min(100% - 2.4rem, var(--shell));
  margin-inline: auto;
}

.shell-narrow {
  width: min(100% - 2.4rem, var(--shell-narrow));
  margin-inline: auto;
}

.section {
  position: relative;
  padding: clamp(3.75rem, 8vw, 7rem) 0;
}

.section-tight { padding: clamp(2.5rem, 5vw, 4rem) 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-size: 0.735rem;
  font-weight: 650;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.9rem;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-brand);
}

.eyebrow-hot { color: var(--coral); }
.eyebrow-hot::before { background: var(--grad-hot); }

.lede {
  font-size: clamp(1.02rem, 1.7vw, 1.17rem);
  color: var(--ink-dim);
  max-width: 62ch;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: clamp(1.75rem, 3.5vw, 2.75rem);
}

.section-head > div { max-width: 66ch; }

.text-muted { color: var(--muted); }
.text-small { font-size: 0.88rem; }
.center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.75rem; }
.mt-4 { margin-top: 2.5rem; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--green);
  color: #03130a;
  padding: 0.7rem 1.1rem;
  border-radius: 0 0 var(--r-sm) 0;
  font-weight: 650;
}

.skip-link:focus {
  left: 0;
}

/* ---------- botões ---------- */

.btn {
  --btn-bg: var(--panel-strong);
  --btn-ink: var(--ink);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.8rem 1.35rem;
  border-radius: var(--r-pill);
  background: var(--btn-bg);
  color: var(--btn-ink);
  font-family: var(--font-display);
  font-weight: 620;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  border: 1px solid var(--line);
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.25s var(--ease),
    background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  color: #fff;
}

.btn:active { transform: translateY(0); }

.btn svg { width: 18px; height: 18px; flex: none; }

.btn-primary {
  background: var(--grad-brand);
  color: #032013;
  border-color: transparent;
  box-shadow: 0 16px 38px -18px rgba(70, 209, 127, 0.9);
}

.btn-primary:hover {
  color: #021a0f;
  box-shadow: 0 22px 48px -18px rgba(70, 209, 127, 1);
}

.btn-hot {
  background: var(--grad-hot);
  color: #2a0409;
  border-color: transparent;
  box-shadow: 0 16px 38px -18px rgba(255, 92, 107, 0.85);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
}

.btn-ghost:hover { background: var(--panel); }

.btn-sm {
  padding: 0.5rem 0.95rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 1rem 1.8rem;
  font-size: 1.03rem;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
}

/* ---------- cabeçalho ---------- */

.site-head {
  position: sticky;
  top: 0;
  z-index: 80;
  height: var(--head-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), backdrop-filter 0.3s;
}

.site-head.is-stuck {
  background: rgba(5, 11, 9, 0.82);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--line);
}

.head-inner {
  width: min(100% - 2.4rem, 1360px);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex: none;
  color: #fff;
}

.brand:hover { color: #fff; }

.brand img {
  width: 36px;
  height: 36px;
  filter: drop-shadow(0 4px 12px rgba(70, 209, 127, 0.45));
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  text-transform: uppercase;
  letter-spacing: -0.005em;
}

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

.brand-sub {
  font-size: 0.64rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--faint);
  font-weight: 600;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  margin-left: auto;
}

.nav a {
  position: relative;
  padding: 0.5rem 0.78rem;
  border-radius: var(--r-pill);
  color: var(--ink-dim);
  font-size: 0.915rem;
  font-weight: 520;
  transition: color 0.18s var(--ease), background 0.18s var(--ease);
}

.nav a:hover { color: #fff; background: var(--panel); }

.nav a.is-active {
  color: #fff;
}

.nav a.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-brand);
}

.head-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: none;
  margin-left: auto;
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink-dim);
  transition: all 0.2s var(--ease);
}

.icon-btn:hover {
  color: #fff;
  border-color: var(--line-strong);
  background: var(--panel-strong);
  transform: translateY(-1px);
}

.icon-btn svg { width: 19px; height: 19px; }

.burger { display: none; }

/* menu mobile */
.mobile-nav {
  position: fixed;
  inset: var(--head-h) 0 0;
  z-index: 79;
  background: rgba(4, 9, 7, 0.96);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  padding: 1.6rem 1.2rem 3rem;
  overflow-y: auto;
  display: none;
  animation: fadeUp 0.28s var(--ease);
}

.mobile-nav.is-open { display: block; }

.mobile-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0.4rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.16rem;
  font-weight: 600;
}

.mobile-nav a span {
  color: var(--faint);
  font-size: 0.8rem;
  font-family: var(--font-body);
  font-weight: 400;
}

body.no-scroll { overflow: hidden; }

/* barra de leitura */
.read-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  z-index: 90;
  background: var(--grad-mix);
  box-shadow: 0 0 12px rgba(70, 209, 127, 0.7);
  transition: width 0.1s linear;
}

/* ---------- rodapé ---------- */

.site-foot {
  position: relative;
  margin-top: clamp(3rem, 7vw, 6rem);
  border-top: 1px solid var(--line);
  background:
    radial-gradient(38rem 20rem at 14% 0%, rgba(20, 160, 88, 0.14), transparent 70%),
    radial-gradient(30rem 18rem at 88% 10%, rgba(255, 92, 107, 0.08), transparent 70%);
  padding: clamp(2.75rem, 6vw, 4.5rem) 0 2rem;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 2.5rem;
}

.foot-about p {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 0.9rem;
  max-width: 34ch;
}

.foot-col h4 {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 1rem;
  font-family: var(--font-display);
  font-weight: 650;
}

.foot-col ul { list-style: none; display: grid; gap: 0.6rem; }

.foot-col a {
  color: var(--ink-dim);
  font-size: 0.92rem;
}

.foot-col a:hover { color: var(--green-soft); }

.foot-bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  color: var(--faint);
  font-size: 0.85rem;
}

/* ---------- animações ---------- */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

@keyframes pulseRing {
  0% { transform: scale(0.82); opacity: 0.55; }
  70% { transform: scale(1.25); opacity: 0; }
  100% { opacity: 0; }
}

@keyframes spinSlow {
  to { transform: rotate(360deg); }
}

@keyframes bars {
  0%, 100% { transform: scaleY(0.35); }
  50% { transform: scaleY(1); }
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

/* ---------- responsivo ---------- */

@media (max-width: 1040px) {
  .nav { display: none; }
  .burger { display: grid; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .foot-about { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  body { font-size: 0.99rem; }
  .shell, .shell-narrow { width: min(100% - 1.6rem, var(--shell)); }
  .head-inner { width: min(100% - 1.6rem, 1360px); gap: 0.6rem; }
  .section { padding: 3.25rem 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 1.1rem; }
  .brand-sub { display: none; }
  /* a mesma chamada já aparece no menu mobile */
  .head-actions > .btn { display: none; }
  .foot-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .site-head, .site-foot, .atmos, .atmos-grid, .read-bar, .no-print { display: none !important; }
  body { background: #fff; color: #111; }
}