/* ==========================================================================
   Projeto Solar — Design System da Landing Page de Energia Solar
   style.css
   --------------------------------------------------------------------------
   Tokens + componentes + responsivo.
   Copiado e adaptado de colors_and_type.css e ui_kits/app/components/*.css
   ========================================================================== */

/* ---- Tokens ------------------------------------------------------------ */

:root {
  --bg: oklch(0.995 0.002 105);
  --surface: oklch(0.985 0.004 105);
  --fg: oklch(0.23 0.03 255);
  --muted: oklch(0.5 0.02 255);
  --border: oklch(0.9 0.01 105);
  --accent: oklch(0.75 0.16 80);

  --primary: oklch(0.28 0.07 255);
  --success: oklch(0.62 0.13 155);
  --warning: oklch(0.8 0.15 75);
  --danger: oklch(0.55 0.19 25);
  --info: oklch(0.65 0.1 235);

  --on-accent: oklch(0.2 0.03 80);
  --on-primary: oklch(0.995 0.002 105);
  --on-accent-hover: oklch(0.18 0.03 80);

  --bg-hex: #fdfdfc;
  --surface-hex: #fafaf7;
  --fg-hex: #131e2b;
  --muted-hex: #5c646f;
  --border-hex: #dfded7;
  --accent-hex: #e2a000;
  --primary-hex: #0e294a;
  --success-hex: #349d62;
  --warning-hex: #f5ae39;
  --danger-hex: #c92f33;
  --info-hex: #4a99c3;
  --on-accent-hex: #1d1406;
  --on-primary-hex: #fdfdfc;
  --on-accent-hover-hex: #181003;

  --font-display: "Space Grotesk", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "DM Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --text-display-xl: clamp(36px, 5vw, 64px);
  --text-heading-1: clamp(30px, 3.6vw, 48px);
  --text-heading-2: clamp(24px, 2.4vw, 32px);
  --text-heading-3: clamp(19px, 1.6vw, 22px);
  --text-body-lg: clamp(18px, 1.5vw, 20px);
  --text-body: 17px;
  --text-caption: 14px;
  --text-label-lg: 16px;
  --text-label: 14px;
  --text-mono-lg: clamp(26px, 2.4vw, 32px);
  --text-mono-sm: 14px;

  --leading-display: 1.05;
  --leading-heading: 1.15;
  --leading-body: 1.6;

  --tracking-display: -0.02em;
  --tracking-body: 0em;

  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-8: 48px;
  --space-10: 64px;
  --space-12: 96px;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 999px;

  --shadow-sm: 0 1px 2px oklch(0.3 0.05 255 / 0.06);
  --shadow-md: 0 6px 24px -6px oklch(0.3 0.05 255 / 0.14);
  --shadow-lg: 0 24px 48px -12px oklch(0.25 0.06 255 / 0.25);

  --container-max: 1160px;
  --container-pad: clamp(24px, 4vw, 48px);
  --header-h: 72px;
}

/* ---- Base -------------------------------------------------------------- */

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

html {
  font-family: var(--font-body);
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body { margin: 0; font-size: var(--text-body); line-height: var(--leading-body); }

h1, h2, h3, h4 { font-family: var(--font-display); line-height: var(--leading-heading); margin: 0; }
p { margin: 0; }
a { color: var(--primary); text-decoration: none; }

/* ---- Tipografia utilitária ------------------------------------------- */

.t-display-xl { font-family: var(--font-display); font-size: var(--text-display-xl); font-weight: var(--weight-bold); line-height: var(--leading-display); letter-spacing: var(--tracking-display); }
.t-heading-1 { font-family: var(--font-display); font-size: var(--text-heading-1); font-weight: var(--weight-bold); line-height: var(--leading-heading); letter-spacing: var(--tracking-display); }
.t-heading-2 { font-family: var(--font-display); font-size: var(--text-heading-2); font-weight: var(--weight-semibold); line-height: var(--leading-heading); }
.t-heading-3 { font-family: var(--font-display); font-size: var(--text-heading-3); font-weight: var(--weight-semibold); line-height: var(--leading-heading); }
.t-body-lg   { font-size: var(--text-body-lg); line-height: var(--leading-body); }
.t-body     { font-size: var(--text-body); line-height: var(--leading-body); }
.t-caption  { font-size: var(--text-caption); font-weight: var(--weight-medium); line-height: 1.4; }
.t-label-lg { font-size: var(--text-label-lg); font-weight: var(--weight-semibold); line-height: 1.2; }
.t-label    { font-size: var(--text-label); font-weight: var(--weight-semibold); line-height: 1.2; }
.t-mono-lg  { font-family: var(--font-mono); font-size: var(--text-mono-lg); font-weight: var(--weight-medium); line-height: 1.2; }
.t-mono-sm  { font-family: var(--font-mono); font-size: var(--text-mono-sm); line-height: 1.4; }

/* ---- Cores utilitárias ------------------------------------------------- */

.c-bg      { background: var(--bg); }
.c-surface { background: var(--surface); }
.c-primary { background: var(--primary); }
.c-accent  { background: var(--accent); }
.c-success { background: var(--success); }

.t-fg     { color: var(--fg); }
.t-muted  { color: var(--muted); }
.t-primary { color: var(--primary); }
.t-accent { color: var(--accent); }
.t-on-accent { color: var(--on-accent); }
.t-on-primary { color: var(--on-primary); }
.t-success { color: var(--success); }
.t-danger { color: var(--danger); }

/* ---- Botões ------------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-label);
  font-weight: var(--weight-semibold);
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none;
  border: 1.5px solid transparent;
  transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn--primary { background: var(--accent); color: var(--on-accent); }
.btn--primary:hover { background: oklch(0.81 0.16 80); color: var(--on-accent-hover); box-shadow: 0 8px 24px -8px oklch(0.75 0.16 80 / 0.5); }
.btn--primary:active { background: oklch(0.69 0.16 80); }
.btn--secondary { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn--secondary:hover { background: oklch(0.95 0.02 255); }
.btn--ghost { background: transparent; color: var(--primary); padding: 12px 12px; }
.btn--ghost:hover { background: oklch(0.97 0.015 255); }
.btn--block { width: 100%; }

/* ---- Cards ---------------------------------------------------------------- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* ---- Formulários ---------------------------------------------------------- */

.input {
  width: 100%;
  min-height: 48px;
  padding: 0 var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg);
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--fg);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.input::placeholder { color: var(--muted); }
.input:focus-visible { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px oklch(0.75 0.16 80 / 0.25); }
.input--error { border-color: var(--danger); }
.field-error { color: var(--danger); font-size: var(--text-caption); margin-top: var(--space-2); }

/* ---- Accordion -------------------------------------------------------------- */

.accordion { border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); overflow: hidden; }
.accordion__header {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-4); width: 100%; padding: var(--space-5);
  background: var(--surface); border: 0;
  font-family: var(--font-body); font-size: var(--text-body-lg);
  font-weight: var(--weight-semibold); color: var(--fg);
  cursor: pointer; text-align: left;
}
.accordion__header:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; }
.accordion__chevron { transition: transform 0.2s ease; flex-shrink: 0; }
.accordion[open] .accordion__chevron { transform: rotate(180deg); }
.accordion__body { padding: 0 var(--space-5) var(--space-5); color: var(--muted); }

/* ---- Selos / chips ----------------------------------------------------------- */

.chip {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-3); border-radius: var(--radius-full);
  background: oklch(0.93 0.05 80); color: var(--on-accent);
  font-size: var(--text-caption); font-weight: var(--weight-medium);
}
.chip--success { background: oklch(0.92 0.05 155); color: oklch(0.28 0.06 155); }
.chip--primary { background: oklch(0.93 0.02 255); color: var(--primary); }

/* ---- Layout ---------------------------------------------------------------- */

.container { width: 100%; max-width: var(--container-max); margin-inline: auto; padding-inline: var(--container-pad); }
.section { padding-block: var(--space-12); }
.grid-12 { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--space-5); }
.section__head { max-width: 680px; margin-bottom: var(--space-8); }
.section__head h2 { color: var(--primary); }
.section__head p { margin-top: var(--space-4); color: var(--muted); }

/* ---- Header & navegação --------------------------------------------------- */

.header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  background: oklch(0.995 0.002 105 / 0.82);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header__in { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.header__brand { display: flex; align-items: center; gap: var(--space-3); font-family: var(--font-display); font-weight: 700; font-size: 20px; color: var(--primary); letter-spacing: -0.01em; text-decoration: none; }
.header__brand span { color: var(--accent); }
.header__nav { display: flex; align-items: center; gap: var(--space-5); }
.header__link { color: var(--fg); font-size: var(--text-label); font-weight: 500; text-decoration: none; }
.header__link:hover { color: var(--primary); }

.header__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border: 0;
  background: transparent;
  cursor: pointer;
  z-index: 60;
}
.header__burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--fg);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.header__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header__burger.is-open span:nth-child(2) { opacity: 0; }
.header__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- Hero --------------------------------------------------------------- */

.hero { padding-block: var(--space-10) var(--space-8); }
.hero__grid { display: grid; grid-template-columns: 7fr 5fr; gap: var(--space-8); align-items: center; }
.hero__kicker { display: inline-flex; align-items: center; gap: var(--space-2); }
.hero__title { margin-top: var(--space-4); color: var(--primary); }
.hero__title em { font-style: normal; color: var(--accent); }
.hero__lede { margin-top: var(--space-5); max-width: 560px; color: var(--muted); }
.hero__cta-row { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-6); align-items: center; }
.hero__note { margin-top: var(--space-4); color: var(--muted); }
.hero__media { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); aspect-ratio: 4 / 3; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hero__badge {
  position: absolute; left: var(--space-5); bottom: var(--space-5);
  background: oklch(0.995 0.002 105 / 0.9);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  box-shadow: var(--shadow-md);
}
.hero__badge-num { color: var(--accent); }

/* ---- Faixa de confiança ------------------------------------------------- */

.trust { border-block: 1px solid var(--border); background: var(--surface); padding-block: var(--space-6); }
.trust__in { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
.trust__item { text-align: center; }
.trust__num { display: block; color: var(--primary); }
.trust__label { display: block; margin-top: var(--space-1); color: var(--muted); }

/* ---- Como funciona ------------------------------------------------------ */

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
.step__num { display: block; font-family: var(--font-display); font-size: 40px; font-weight: 700; color: var(--accent); line-height: 1; }
.step h3 { margin-top: var(--space-4); color: var(--primary); }
.step p { margin-top: var(--space-3); color: var(--muted); font-size: var(--text-body); }

/* ---- Retorno financeiro ------------------------------------------------- */

.payback { display: grid; grid-template-columns: 5fr 7fr; gap: var(--space-8); align-items: center; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-8); }
.payback__chart { display: flex; align-items: flex-end; gap: var(--space-4); height: 260px; padding: 48px var(--space-4) var(--space-4); position: relative; }
.payback__chart::after {
  content: 'Investimento';
  position: absolute;
  left: var(--space-4);
  right: var(--space-4);
  top: 1px;
  border-top: 2px dashed var(--muted);
  opacity: 0.35;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  text-align: right;
  padding-top: 2px;
}
.payback__bar { flex: 1; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; align-items: center; }
.payback__fill { width: 100%; border-radius: var(--radius-sm) var(--radius-sm) 0 0; background: var(--primary); transition: height 0.5s ease; position: relative; min-height: 4px; }
.payback__fill.is-accent { background: var(--accent); }
.payback__fill-val {
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
}
.payback__fill.is-accent .payback__fill-val { color: var(--accent); }
.payback__year { margin-top: var(--space-2); font-family: var(--font-display); font-size: var(--text-caption); font-weight: 600; color: var(--muted); }
.payback__list { display: grid; gap: var(--space-4); }
.payback__row { display: flex; align-items: baseline; gap: var(--space-4); border-bottom: 1px solid var(--border); padding-bottom: var(--space-3); }
.payback__row:last-child { border-bottom: 0; padding-bottom: 0; }
.payback__k { flex: 1; color: var(--muted); }

/* ---- Vantagens ---------------------------------------------------------- */

.benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
.benefit { padding: var(--space-6); }
.benefit__icon { width: 52px; height: 52px; border-radius: var(--radius-md); display: grid; place-items: center; background: oklch(0.93 0.02 255); color: var(--primary); }
.benefit__icon.is-accent { background: oklch(0.93 0.05 80); color: var(--accent); }
.benefit__icon.is-success { background: oklch(0.92 0.05 155); color: var(--success); }
.benefit h3 { margin-top: var(--space-4); color: var(--primary); }
.benefit p { margin-top: var(--space-3); color: var(--muted); }

/* ---- Seção escura (simulação) ------------------------------------------- */

.simulation { background: var(--primary); border-radius: var(--radius-lg); padding: var(--space-10); display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-8); align-items: start; margin-top: var(--space-12); }
.simulation h2 { color: var(--on-primary); }
.simulation p { margin-top: var(--space-4); color: oklch(0.82 0.03 255 / 0.9); }
.simulation .t-mono-sm { color: oklch(0.82 0.03 255 / 0.75); }
.simulation form { display: grid; gap: var(--space-4); background: oklch(0.995 0.002 105 / 0.06); border: 1px solid oklch(1 0 0 / 0.14); border-radius: var(--radius-lg); padding: var(--space-6); }
.simulation label { color: var(--on-primary); }
.simulation .input { background: oklch(0.995 0.002 105 / 0.9); }
.simulation .btn--primary { width: 100%; }
.simulation .field-error { color: oklch(0.82 0.12 25); }

.sim-result {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  animation: sim-fade-in 0.4s ease;
}
.sim-result__card {
  background: oklch(0.995 0.002 105 / 0.08);
  border: 1px solid oklch(1 0 0 / 0.12);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  /* display: grid; */
  gap: var(--space-1);
}
.sim-result__label { color: oklch(0.78 0.02 255); }
.sim-result .t-mono-lg { display: block; }
.sim-result .t-success { color: oklch(0.72 0.13 155); }
.sim-result .t-accent { color: oklch(0.82 0.16 80); }

@keyframes sim-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.sim-ref { transition: opacity 0.3s ease; }
.sim-ref.is-hidden { opacity: 0; }

.sim-result__card:last-child {
  grid-column: 1 / -1;
}

.sim-whatsapp {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  background: #25d366;
  color: #fff;
  font-family: var(--font-body);
  font-size: var(--text-label);
  font-weight: var(--weight-semibold);
  text-decoration: none;
  margin-top: var(--space-4);
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
  animation: sim-fade-in 0.4s ease;
}
.sim-whatsapp:hover {
  background: #22c55e;
  box-shadow: 0 4px 16px oklch(0.62 0.13 155 / 0.4);
}
.sim-whatsapp:focus-visible {
  outline: 2px solid var(--on-primary);
  outline-offset: 2px;
}

/* ---- FAQ ---------------------------------------------------------------- */

.faq { display: grid; gap: var(--space-4); max-width: 760px; }

/* ---- Contato ------------------------------------------------------------ */

.contact { max-width: 600px; display: grid; gap: var(--space-5); }
.contact__fields { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.contact__textarea { min-height: 120px; padding: var(--space-4); resize: vertical; font-family: var(--font-body); }
.contact .btn { align-self: start; }

/* ---- Footer ------------------------------------------------------------- */

.footer { margin-top: var(--space-12); border-top: 1px solid var(--border); background: var(--surface); }
.footer__in { padding-block: var(--space-8); display: flex; justify-content: space-between; align-items: center; gap: var(--space-5); }
.footer__brand { display: flex; align-items: center; gap: var(--space-3); font-family: var(--font-display); font-weight: 700; color: var(--primary); }
.footer__note { color: var(--muted); font-size: var(--text-caption); }

/* ---- WhatsApp flutuante --------------------------------------------------- */

.whatsapp-float {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: 100;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: #25d366;
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: 0 4px 16px oklch(0.62 0.13 155 / 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  animation: whatsapp-pulse 2s ease-in-out infinite;
}
.whatsapp-float:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px oklch(0.62 0.13 155 / 0.55);
}
.whatsapp-float:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

@keyframes whatsapp-pulse {
  0%, 100% { box-shadow: 0 4px 16px oklch(0.62 0.13 155 / 0.4); }
  50% { box-shadow: 0 4px 24px oklch(0.62 0.13 155 / 0.6); }
}

/* ---- Responsivo --------------------------------------------------------- */

@media (max-width: 1000px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__media { order: -1; }
  .steps, .benefits, .trust__in { grid-template-columns: 1fr 1fr; }
  .payback { grid-template-columns: 1fr; }
  .simulation { grid-template-columns: 1fr; }
  .sim-result { grid-template-columns: 1fr 1fr; }
  .sim-result__card:last-child { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .header__burger { display: flex; }
  .header__nav {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: oklch(0.995 0.002 105 / 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: var(--space-5) var(--container-pad) var(--space-6);
    box-shadow: var(--shadow-lg);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .header__nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .header__nav .header__link { font-size: var(--text-body-lg); padding: var(--space-2) 0; }
  .header__nav .btn { width: 100%; margin-top: var(--space-2); }
  .contact__fields { grid-template-columns: 1fr; }
  .steps, .benefits, .trust__in { grid-template-columns: 1fr; }
  .section { padding-block: var(--space-8); }
  .simulation { padding: var(--space-6); }
  .sim-result { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .grid-12 { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}