/* Design tokens alinhados a frontend/src/index.css (páginas estáticas de privacidade) */

:root {
  --font-sans: "Inter", system-ui, sans-serif;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --radius: 0.875rem;
  --background: oklch(16% 0.02 260);
  --foreground: oklch(96% 0.01 250);
  --card: oklch(20% 0.03 260);
  --muted: oklch(22% 0.03 260);
  --muted-foreground: oklch(72% 0.02 250);
  --primary: oklch(78% 0.16 195);
  --border: oklch(40% 0.04 260 / 0.35);
  --input: oklch(28% 0.04 260);
  --gradient-brand: linear-gradient(
    135deg,
    oklch(82% 0.16 195) 0%,
    oklch(65% 0.22 285) 100%
  );
  --gradient-mesh:
    radial-gradient(at 20% 20%, oklch(55% 0.22 195 / 0.35) 0px, transparent 50%),
    radial-gradient(at 80% 0%, oklch(50% 0.25 285 / 0.3) 0px, transparent 50%),
    radial-gradient(at 50% 100%, oklch(50% 0.22 250 / 0.25) 0px, transparent 50%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  background-image: radial-gradient(
    circle at 1px 1px,
    oklch(40% 0.04 260 / 0.18) 1px,
    transparent 0
  );
  background-size: 28px 28px;
}

::selection {
  color: var(--foreground);
  background: oklch(78% 0.16 195 / 0.35);
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--foreground);
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  margin: 0 0 0.75rem;
}

h2 {
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  font-weight: 600;
  margin: 2.25rem 0 0.85rem;
}

h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 1.5rem 0 0.6rem;
  color: oklch(90% 0.01 250);
}

p {
  margin: 0 0 1rem;
  color: var(--muted-foreground);
}

ul {
  margin: 0 0 1.25rem;
  padding-left: 1.25rem;
  color: var(--muted-foreground);
}

li {
  margin-bottom: 0.65rem;
}

strong {
  color: var(--foreground);
  font-weight: 600;
}

li.indented {
  margin-left: 1.25rem;
  list-style-type: circle;
}

.top-accent {
  position: fixed;
  inset: 0 0 auto;
  z-index: 60;
  height: 2px;
  background: linear-gradient(
    to right,
    oklch(82% 0.16 195),
    oklch(70% 0.2 245),
    oklch(65% 0.22 285)
  );
}

.page-shell {
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.mesh-layer {
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: var(--gradient-mesh);
  opacity: 0.7;
}

.site-header {
  padding: 1.25rem 1rem 0.5rem;
}

.site-header__inner,
.site-footer__inner,
.privacy-main {
  width: min(100% - 2rem, 48rem);
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--foreground);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
  color: var(--foreground);
}

.brand img {
  height: 1.5rem;
  width: auto;
}

.privacy-main {
  flex: 1;
  padding: 1.5rem 0 3rem;
}

.privacy-card {
  background: color-mix(in oklab, var(--card) 60%, transparent);
  backdrop-filter: blur(14px);
  border: 1px solid color-mix(in oklab, var(--foreground) 8%, transparent);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem 2rem;
}

@media (min-width: 640px) {
  .privacy-card {
    padding: 2rem 2.25rem 2.5rem;
  }
}

.privacy-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1rem;
  margin-bottom: 1.75rem;
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
}

.lang-select {
  appearance: none;
  background-color: var(--input);
  background-image: linear-gradient(45deg, transparent 50%, var(--muted-foreground) 50%),
    linear-gradient(135deg, var(--muted-foreground) 50%, transparent 50%);
  background-position:
    calc(100% - 16px) calc(50% - 3px),
    calc(100% - 11px) calc(50% - 3px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--foreground);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  padding: 0.45rem 2.1rem 0.45rem 0.9rem;
  cursor: pointer;
}

.lang-select:focus {
  outline: 2px solid color-mix(in oklab, var(--primary) 55%, transparent);
  outline-offset: 2px;
}

.meta {
  margin: 0 0 1.5rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

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

.site-footer {
  border-top: 1px solid color-mix(in oklab, var(--border) 80%, transparent);
  padding: 1.75rem 1rem 2rem;
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.site-footer p {
  margin: 0;
  font-size: 0.75rem;
}

.loading-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
  text-align: center;
}

.loading-page p {
  margin: 0;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
}

/* —— Landing de produto (ex.: Smart Metering AI) —— */

.lp-header .site-header__inner,
.lp-footer .site-footer__inner,
.lp-wrap {
  width: min(100% - 2rem, 72rem);
  margin-inline: auto;
}

.lp-header {
  position: sticky;
  top: 0;
  z-index: 40;
  padding: 0.85rem 1rem;
  background: color-mix(in oklab, var(--background) 78%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid color-mix(in oklab, var(--border) 55%, transparent);
}

.lp-header .site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.lp-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem 1.25rem;
  font-size: 0.85rem;
}

.lp-nav a {
  color: var(--muted-foreground);
  text-decoration: none;
}

.lp-nav a:hover {
  color: var(--foreground);
  text-decoration: none;
}

.lp-hero {
  position: relative;
  padding: 4rem 0 3rem;
}

@media (min-width: 768px) {
  .lp-hero {
    padding: 5.5rem 0 4rem;
  }
}

.lp-hero__grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 900px) {
  .lp-hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3rem;
  }
}

.lp-eyebrow-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--muted-foreground);
  margin-bottom: 1.25rem;
}

.lp-eyebrow-row::before {
  content: "";
  width: 2rem;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--primary));
}

.lp-display {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 7vw, 4.25rem);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--foreground);
  margin: 0 0 1.25rem;
  overflow-wrap: break-word;
}

.lp-lead {
  max-width: 36rem;
  margin: 0 0 1.75rem;
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--muted-foreground);
}

.lp-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

@media (min-width: 480px) {
  .lp-actions {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: 999px;
  padding: 0.8rem 1.4rem;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition:
    transform 0.15s ease,
    background-color 0.15s ease,
    color 0.15s ease;
}

.btn-primary {
  background: var(--foreground);
  color: var(--background);
  box-shadow: 0 10px 40px -10px oklch(78% 0.16 195 / 0.6);
}

.btn-primary:hover {
  background: color-mix(in oklab, var(--foreground) 90%, white);
  color: var(--background);
  text-decoration: none;
  transform: scale(1.02);
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--foreground);
  background: transparent;
}

.btn-secondary:hover {
  background: color-mix(in oklab, var(--foreground) 5%, transparent);
  color: var(--foreground);
  text-decoration: none;
  transform: scale(1.02);
}

.lp-demo {
  position: relative;
  border-radius: calc(var(--radius) + 0.35rem);
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card) 70%, transparent);
  backdrop-filter: blur(14px);
  padding: 1.15rem;
  overflow: hidden;
}

.lp-demo::before {
  content: "";
  position: absolute;
  inset: -2rem;
  z-index: -1;
  background: linear-gradient(
    135deg,
    oklch(78% 0.16 195 / 0.2),
    oklch(65% 0.22 285 / 0.2)
  );
  filter: blur(28px);
}

.lp-demo__meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--muted-foreground);
  margin-bottom: 0.85rem;
}

.lp-demo__live {
  color: var(--primary);
}

.lp-demo__value {
  border-radius: calc(var(--radius) - 0.15rem);
  border: 1px solid var(--border);
  background: var(--background);
  padding: 1rem 1.1rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: clamp(1.5rem, 4vw, 2rem);
  letter-spacing: 0.2em;
  font-variant-numeric: tabular-nums;
}

.lp-demo__caption {
  margin: 0.75rem 0 0.9rem;
  font-size: 0.75rem;
  color: var(--muted-foreground);
}

.lp-demo__bar {
  height: 0.375rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--border);
}

.lp-demo__bar > span {
  display: block;
  height: 100%;
  width: 98%;
  background: var(--gradient-brand);
}

.lp-section {
  padding: 3.5rem 0;
}

@media (min-width: 768px) {
  .lp-section {
    padding: 5rem 0;
  }
}

.lp-section-head {
  max-width: 40rem;
  margin-bottom: 2rem;
}

.lp-section-head h2 {
  margin: 0.65rem 0 0;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
}

.lp-section-head p {
  margin: 0.85rem 0 0;
}

.feature-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.feature-card {
  background: color-mix(in oklab, var(--card) 60%, transparent);
  backdrop-filter: blur(14px);
  border: 1px solid color-mix(in oklab, var(--foreground) 8%, transparent);
  border-radius: 1rem;
  padding: 1.25rem 1.35rem;
}

.feature-card.wide {
  grid-column: span 1;
}

@media (min-width: 980px) {
  .feature-card.wide {
    grid-column: span 2;
  }
}

.feature-card h3 {
  margin: 0;
  font-size: 1.05rem;
  color: var(--foreground);
}

.feature-card p {
  margin: 0.55rem 0 0;
  font-size: 0.9rem;
}

.use-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .use-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.cta-banner {
  position: relative;
  overflow: hidden;
  border-radius: 1.25rem;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card) 75%, transparent);
  padding: 2rem 1.35rem;
}

@media (min-width: 768px) {
  .cta-banner {
    padding: 2.75rem;
  }
}

.cta-banner .mesh-bg {
  position: absolute;
  inset: 0;
  background-image: var(--gradient-mesh);
  opacity: 0.65;
  pointer-events: none;
}

.cta-banner__content {
  position: relative;
  max-width: 40rem;
}

.cta-banner h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
}

.cta-banner p {
  margin: 0 0 1.5rem;
}

.lp-footer .site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 720px) {
  .lp-footer .site-footer__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.lp-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-size: 0.75rem;
}

.lp-footer__links a {
  color: var(--muted-foreground);
}

.lp-footer__links a:hover {
  color: var(--foreground);
}