/* ==========================================================================
   Arthur Labs — homepage: sticky nav + hero (ART-299)
   Builds on css/tokens.css + css/components.css. Only page-specific layout
   lives here; reusable pieces stay in components.css.
   ========================================================================== */

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px; /* anchors land below the sticky nav */
}

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

/* ---- Nav additions ------------------------------------------------------ */
.al-nav {
  transition: box-shadow var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
}
.al-nav:not([data-scrolled="true"]) { border-bottom-color: transparent; }
.al-nav[data-scrolled="true"] { box-shadow: var(--shadow-sm); }

.al-nav__inner,
.al-nav__cluster,
.al-nav__links { flex-wrap: nowrap; }

.al-nav__cluster {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
  min-width: 0;
}

/* Language, theme, and contact stay one control group on the header row. */
.al-nav__tools {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: var(--space-3);
  flex: none;
}
.al-nav__tools .home-nav__cta { margin-left: 0; }

.lang-switch {
  display: inline-flex;
  align-items: center;
  flex: none;
  height: 36px;
  padding: 3px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-full);
  background: var(--color-surface-sunken);
}
.lang-switch a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 100%;
  padding: 0 var(--space-2);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
}
.lang-switch a:hover { color: var(--color-text); }
.lang-switch a[aria-current="true"] {
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

html[lang="pt-BR"] .hero__title { max-width: 16ch; }

/* Hamburger icon inside the existing toggle button */
.home-nav__burger {
  position: relative;
  width: 16px;
  height: 12px;
  display: inline-block;
}
.home-nav__burger::before,
.home-nav__burger::after,
.home-nav__burger span {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-fast) var(--ease-out);
}
.home-nav__burger::before { top: 0; }
.home-nav__burger span    { top: 5px; }
.home-nav__burger::after  { top: 10px; }

.al-nav[data-open="true"] .home-nav__burger::before { transform: translateY(5px) rotate(45deg); }
.al-nav[data-open="true"] .home-nav__burger span    { opacity: 0; }
.al-nav[data-open="true"] .home-nav__burger::after  { transform: translateY(-5px) rotate(-45deg); }

/* Collapse before the header row wraps. Portuguese labels plus the
   language control, theme toggle, and CTA don't fit below this width. */
@media (max-width: 1040px) {
  .al-nav__toggle { display: inline-flex; }
  .al-nav__links {
    display: none;
    position: absolute;
    inset: 64px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-2) var(--gutter) var(--space-4);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }
  .al-nav[data-open="true"] .al-nav__links { display: flex; }
  .al-nav__link { min-height: 44px; }
  .al-nav__tools {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
    margin: var(--space-3) 0 0;
    padding-top: var(--space-3);
    border-top: 1px solid var(--color-border);
  }
  .lang-switch { align-self: flex-start; }
  .al-nav .theme-toggle,
  .home-nav__cta {
    width: 100%;
    min-height: 44px;
    margin: 0;
  }
}

/* ---- Hero --------------------------------------------------------------- */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(var(--space-12), 9vw, var(--space-24)) clamp(var(--space-16), 10vw, var(--space-24));
}

/* Background: faint grid fading out + soft accent glow */
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}
.hero::before {
  background-image:
    linear-gradient(to right, var(--color-border) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-border) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: center top;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
          mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
}
.hero::after {
  background:
    radial-gradient(40rem 24rem at 85% 20%, color-mix(in srgb, var(--al-accent-400) 18%, transparent), transparent 70%),
    radial-gradient(30rem 20rem at 10% 0%, color-mix(in srgb, var(--al-accent-300) 10%, transparent), transparent 70%);
}

.hero__inner {
  display: grid;
  gap: clamp(var(--space-12), 6vw, var(--space-16));
  align-items: center;
}

@media (min-width: 960px) {
  .hero__inner { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); }
}

.hero__copy {
  display: grid;
  gap: var(--space-6);
  justify-items: start;
}

.hero__title {
  max-width: 14ch;
}
.hero__title em {
  font-style: normal;
  color: var(--color-accent);
}

.hero__lead { max-width: 52ch; }

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-2);
}
.hero__actions .al-btn { padding-inline: var(--space-6); }
.hero__actions .al-btn--primary svg { transition: transform var(--duration-fast) var(--ease-out); }
.hero__actions .al-btn--primary:hover svg { transform: translateX(2px); }

.hero__trust {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.hero__trust-sep { color: var(--color-text-subtle); }
.hero__trust-live {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.hero__trust-live::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--al-success);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--al-success) 22%, transparent);
}

@media (max-width: 480px) {
  .hero__actions { width: 100%; }
  .hero__actions .al-btn { flex: 1 1 100%; }
}

/* ---- Device mockups ----------------------------------------------------- */
/* Stylised, CSS-drawn previews of the two apps. Swap for real screenshots
   (keep the .device frame) once product shots are ready. */
.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  min-height: 420px;
}

.device {
  --device-w: 220px;
  position: relative;
  width: var(--device-w);
  aspect-ratio: 9 / 19;
  padding: 8px;
  border-radius: 36px;
  background: var(--al-neutral-900);
  box-shadow:
    0 0 0 1px rgb(255 255 255 / 0.06) inset,
    var(--shadow-lg);
  flex: none;
}
.device::before { /* notch */
  content: "";
  position: absolute;
  top: 16px;
  left: 50%;
  width: 64px;
  height: 18px;
  translate: -50% 0;
  border-radius: var(--radius-full);
  background: var(--al-neutral-950);
  z-index: 2;
}

.device__screen {
  height: 100%;
  border-radius: 28px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 42px 14px 14px;
  font-size: 11px;
  line-height: 1.35;
}

.device--back {
  transform: translate(28px, -36px) rotate(-6deg);
  z-index: 1;
}
.device--front {
  transform: translate(-28px, 0) rotate(4deg);
  z-index: 2;
}

@media (prefers-reduced-motion: no-preference) {
  .device--back  { animation: hero-float 7s var(--ease-out) infinite alternate; }
  .device--front { animation: hero-float 7s var(--ease-out) -3.5s infinite alternate; }
  @keyframes hero-float {
    to { translate: 0 -8px; }
  }
}

@media (max-width: 480px) {
  .hero__visual { min-height: 340px; }
  .device { --device-w: 172px; border-radius: 30px; }
  .device__screen { border-radius: 23px; font-size: 9px; gap: 8px; padding: 36px 11px 11px; }
  .device--back  { transform: translate(22px, -28px) rotate(-6deg); }
  .device--front { transform: translate(-22px, 0) rotate(4deg); }
}

/* Shared mock UI bits */
.mock-app {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: var(--weight-semibold);
  font-size: 1.15em;
}
.mock-app small { font-size: 0.8em; font-weight: var(--weight-regular); opacity: 0.7; }
.mock-card {
  border-radius: 12px;
  padding: 10px;
  display: grid;
  gap: 6px;
}
.mock-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.mock-label { opacity: 0.7; font-size: 0.9em; }
.mock-bar { height: 6px; border-radius: var(--radius-full); overflow: hidden; }
.mock-bar > span { display: block; height: 100%; border-radius: inherit; }
.mock-check {
  width: 14px; height: 14px; border-radius: 50%; flex: none;
  display: grid; place-items: center;
}

/* MeuPlanoFit — light, fresh */
.device__screen--fit {
  background: #f6faf8;
  color: #12201a;
}
.device__screen--fit .mock-card { background: #fff; box-shadow: 0 1px 2px rgb(18 32 26 / 0.08); }
.device__screen--fit .mock-bar { background: #e3eee9; }
.device__screen--fit .mock-bar > span { background: #16a34a; }
.device__screen--fit .mock-check { background: #16a34a; color: #fff; }
.device__screen--fit .mock-check--todo { background: transparent; border: 1.5px solid #b8cbc2; }
.mock-macros { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; text-align: center; }
.mock-macros b { display: block; font-size: 1.2em; }

/* Labuta — warm dark */
.device__screen--labuta {
  background: #140d0a;
  color: #f5ebe4;
}
.device__screen--labuta .mock-card { background: #241914; border: 1px solid rgb(255 255 255 / 0.06); }
.mock-streak { font-size: 2.4em; font-weight: var(--weight-bold); letter-spacing: var(--tracking-tight); line-height: 1; }
.mock-week { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.mock-week span {
  aspect-ratio: 1;
  border-radius: 6px;
  background: rgb(255 255 255 / 0.08);
}
.mock-week span.is-done { background: #f59e0b; }
.mock-avatars { display: flex; }
.mock-avatars span {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid #241914;
  margin-left: -5px;
}
.mock-avatars span:first-child { margin-left: 0; }
.mock-btn {
  margin-top: auto;
  border-radius: 10px;
  padding: 9px;
  text-align: center;
  font-weight: var(--weight-semibold);
  background: #f59e0b;
  color: #140d0a;
}
.mock-tabs {
  margin-top: auto;
  display: flex;
  justify-content: space-around;
  padding: 10px 6px 4px;
  border-top: 1px solid #e3eee9;
}
.mock-tabs span { width: 18px; height: 18px; border-radius: 6px; background: #d5e3dc; }
.mock-tabs span.is-active { background: #16a34a; }