/* app.levav.it — Plataforma de IA Generativa (Levav-IT)
   Visual branco + azul por padrão, com dark-mode via [data-theme="dark"].
   Design system herdado de website/frontend-website:
   fontes Rubik / Orbitron / Space Mono, azul #4d8eff / #3cd7ff / #38bdf8.
   Sem icones/emojis na UI. */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* ===================================================================
   TEMA CLARO (padrao) — branco + azul
   =================================================================== */
:root {
  --surface:            #ffffff;
  --surface-low:        #f8f9fc;
  --surface-container:  #f0f3fa;
  --surface-high:       #e8edf7;
  --primary:            #4d8eff;
  --primary-strong:     #3a7df0;
  --tertiary:           #2aa9e0;
  --accent:             #3cd7ff;
  --ink:                #1C253D;
  --ink-2:              #424754;
  --muted:              #6b7280;
  --outline:            #c9d2e3;
  --outline-variant:    #e0e4ed;
  --line:               #e8ecf2;
  --gradient:           linear-gradient(135deg, #3cd7ff, #4d8eff);
  --nav-bg:             rgba(255, 255, 255, 0.88);
  --hero-bg:            linear-gradient(160deg, #eef4ff 0%, #ffffff 55%, #f3f8ff 100%);
  --hero-ink:           #1C253D;
  --hero-sub:           #424754;
  --card-bg:            #ffffff;
  --card-shadow:        0 10px 30px rgba(28, 37, 61, 0.08);
  --cta-bg:             linear-gradient(160deg, #1C253D, #22304f);
  --cta-ink:            #ffffff;
  --code-bg:            #f0f3fa;
  --maxw:               1120px;
}

/* ===================================================================
   TEMA ESCURO — paleta do website/frontend-website
   =================================================================== */
[data-theme="dark"] {
  --surface:            #050505;
  --surface-low:        #0c0c0e;
  --surface-container:  #141416;
  --surface-high:       #1c1c1f;
  --primary:            #4d8eff;
  --primary-strong:     #6ba2ff;
  --tertiary:           #38bdf8;
  --accent:             #3cd7ff;
  --ink:                #dce1fb;
  --ink-2:              #c2c6d6;
  --muted:              #8c909f;
  --outline:            #424754;
  --outline-variant:    #2a2d36;
  --line:               #1f2229;
  --gradient:           linear-gradient(135deg, #adc6ff, #4d8eff);
  --nav-bg:             rgba(5, 5, 6, 0.9);
  --hero-bg:            linear-gradient(160deg, #0a0f1d 0%, #050505 55%, #0b1120 100%);
  --hero-ink:           #dce1fb;
  --hero-sub:           #c2c6d6;
  --card-bg:            #0f0f12;
  --card-shadow:        0 10px 30px rgba(0, 0, 0, 0.5);
  --cta-bg:             linear-gradient(160deg, #0a0f1d, #10182c);
  --cta-ink:            #dce1fb;
  --code-bg:            #141416;
}

/* ===== Base ===== */
html {
  font-family: 'Rubik', system-ui, sans-serif;
  font-size: 16px;
  background: var(--surface);
  color: var(--ink-2);
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}
body { min-height: 100vh; overflow-x: hidden; transition: background 0.3s, color 0.3s; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.accent-it {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== Navbar ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  border-bottom: 1px solid var(--line);
}
.navbar__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  gap: 16px;
}
.navbar__brand {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  white-space: nowrap;
}
.navbar__brand .it { color: var(--tertiary); }
.navbar__links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}
.navbar__links a {
  color: var(--ink-2);
  font-size: 0.86rem;
  font-weight: 500;
  transition: color 0.2s;
}
.navbar__links a:hover { color: var(--primary); text-decoration: none; }
.navbar__actions { display: flex; align-items: center; gap: 12px; }
.navbar__cta {
  background: var(--primary);
  color: #fff;
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.84rem;
  transition: background 0.2s;
}
.navbar__cta:hover { background: var(--primary-strong); text-decoration: none; }

/* Theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  border: 1px solid var(--outline-variant);
  background: var(--surface-low);
  color: var(--ink-2);
  cursor: pointer;
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}
.theme-toggle:hover { border-color: var(--primary); color: var(--primary); }
.theme-toggle .ico-dark { display: inline; }
.theme-toggle .ico-light { display: none; }
[data-theme="dark"] .theme-toggle .ico-dark { display: none; }
[data-theme="dark"] .theme-toggle .ico-light { display: inline; }

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.navbar__toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--ink-2); border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}
.navbar__toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.navbar__toggle.open span:nth-child(2) { opacity: 0; }
.navbar__toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--hero-bg);
  padding: 96px 0 84px;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 320px at 82% -10%, rgba(60, 215, 255, 0.14), transparent 70%),
    radial-gradient(520px 300px at 8% 112%, rgba(77, 142, 255, 0.16), transparent 70%);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }
.hero__badge {
  display: inline-block;
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  background: rgba(77, 142, 255, 0.1);
  border: 1px solid rgba(77, 142, 255, 0.35);
  border-radius: 4px;
  padding: 5px 11px;
  margin-bottom: 22px;
}
.hero h1 {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3.1rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--hero-ink);
  max-width: 860px;
  margin-bottom: 18px;
}
.hero p.lead {
  font-size: 1.08rem;
  color: var(--hero-sub);
  max-width: 700px;
  margin-bottom: 30px;
  line-height: 1.6;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* Hero em duas colunas (texto + imagem) */
.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.hero__media img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(28, 37, 61, 0.22);
  display: block;
}
[data-theme="dark"] .hero__media img { box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55); }

/* Media split (texto + imagem lado a lado) */
.media-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
}
.media-split__img img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow: var(--card-shadow);
  display: block;
}

/* Figura de imagem centralizada */
.media-figure { margin: 10px 0 8px; }
.media-figure img {
  width: 100%;
  height: auto;
  max-height: 440px;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: var(--card-shadow);
  display: block;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 7px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.btn--primary { background: var(--primary); color: #fff; }
.btn--primary:hover { background: var(--primary-strong); text-decoration: none; }
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--outline);
}
.btn--ghost:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }

/* ===== Section ===== */
.section { padding: 80px 0; }
.section--soft { background: var(--surface-low); }
.section__label {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--tertiary);
  margin-bottom: 10px;
}
.section__title {
  font-family: 'Rubik', sans-serif;
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 14px;
}
.section__intro {
  max-width: 740px;
  color: var(--ink-2);
  font-size: 1.02rem;
  margin-bottom: 42px;
  line-height: 1.6;
}

/* ===== Stats ===== */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat {
  background: var(--card-bg);
  border: 1px solid var(--outline-variant);
  border-radius: 10px;
  padding: 26px 20px;
  text-align: center;
}
.stat__value {
  display: block;
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1.9rem;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.stat__value .u { color: var(--primary); font-size: 1rem; }
.stat__label {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-top: 6px;
  display: block;
}

/* ===== Cards ===== */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--card-bg);
  border: 1px solid var(--outline-variant);
  border-radius: 10px;
  padding: 26px 24px;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--card-shadow); border-color: var(--primary); }
.card__k {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  color: var(--primary);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.card h3 {
  font-family: 'Rubik', sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--ink);
  margin-bottom: 8px;
}
.card p { font-size: 0.92rem; color: var(--ink-2); line-height: 1.55; }

/* ===== Planos (pricing) ===== */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.plan {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: 1px solid var(--outline-variant);
  border-radius: 12px;
  padding: 30px 26px;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.plan:hover { transform: translateY(-3px); box-shadow: var(--card-shadow); }
.plan--featured { border-color: var(--primary); box-shadow: var(--card-shadow); }
.plan__tag {
  position: absolute;
  top: -11px; left: 26px;
  font-family: 'Space Mono', monospace;
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #fff;
  background: var(--primary);
  border-radius: 4px;
  padding: 3px 10px;
}
.plan__name {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  margin-bottom: 4px;
}
.plan__desc { font-size: 0.88rem; color: var(--muted); margin-bottom: 18px; min-height: 2.6em; }
.plan__price {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--primary);
  letter-spacing: -0.02em;
  margin-bottom: 2px;
}
.plan__price small { font-family: 'Space Mono', monospace; font-size: 0.68rem; color: var(--muted); font-weight: 400; }
.plan__meta {
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 18px;
}
.plan ul.dash { flex: 1; margin-bottom: 22px; }
.plan ul.dash li { font-size: 0.9rem; padding: 6px 0 6px 22px; }
.plan .btn { width: 100%; text-align: center; }
.plans__note {
  font-family: 'Space Mono', monospace;
  font-size: 0.74rem;
  color: var(--muted);
  margin-top: 22px;
  line-height: 1.7;
}

/* ===== Architecture diagram ===== */
.diagram {
  background: var(--card-bg);
  border: 1px solid var(--outline-variant);
  border-radius: 12px;
  padding: 24px;
  margin-top: 8px;
}
.diagram svg { width: 100%; height: auto; display: block; }

/* ===== Two columns ===== */
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.panel {
  background: var(--card-bg);
  border: 1px solid var(--outline-variant);
  border-radius: 10px;
  padding: 28px 26px;
}
.panel h3 {
  font-family: 'Rubik', sans-serif;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--ink);
  margin-bottom: 14px;
}
ul.dash { list-style: none; }
ul.dash li {
  position: relative;
  padding: 7px 0 7px 22px;
  font-size: 0.94rem;
  color: var(--ink-2);
  line-height: 1.5;
}
ul.dash li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 12px; height: 3px;
  border-radius: 2px;
  background: var(--gradient);
}

/* ===== Table ===== */
.table-wrap { overflow-x: auto; border-radius: 10px; border: 1px solid var(--outline-variant); }
table { width: 100%; border-collapse: collapse; background: var(--card-bg); }
th {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-align: left;
  padding: 14px 18px;
  background: var(--surface-container);
  border-bottom: 2px solid var(--primary);
}
td {
  padding: 14px 18px;
  color: var(--ink-2);
  font-size: 0.92rem;
  border-bottom: 1px solid var(--line);
}
td:first-child { font-weight: 600; color: var(--ink); }
th + th, td + td { border-left: 1px solid var(--outline-variant); }
tr:last-child td { border-bottom: none; }

/* ===== Highlight ===== */
.highlight {
  background: var(--surface-container);
  border-left: 3px solid var(--primary);
  border-radius: 0 8px 8px 0;
  padding: 22px 26px;
  margin-top: 28px;
  color: var(--ink-2);
  font-size: 1rem;
  line-height: 1.6;
}

/* ===== Contact / CTA ===== */
.cta {
  background: var(--cta-bg);
  color: var(--cta-ink);
  border-radius: 16px;
  padding: 54px 44px;
}
.cta__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.cta h2 {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.cta p { color: rgba(255, 255, 255, 0.78); margin-bottom: 20px; line-height: 1.6; }
.cta__info { font-family: 'Space Mono', monospace; font-size: 0.86rem; line-height: 2; color: rgba(255,255,255,0.85); }
.cta__info a { color: var(--accent); }

/* Contact form */
.form { display: flex; flex-direction: column; gap: 14px; }
.form label {
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: -8px;
}
.form input, .form textarea {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 7px;
  padding: 12px 14px;
  color: #fff;
  font-family: 'Rubik', sans-serif;
  font-size: 0.95rem;
  resize: vertical;
}
.form input::placeholder, .form textarea::placeholder { color: rgba(255,255,255,0.4); }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--accent); }
.form .btn--primary { align-self: flex-start; }
.form__msg { font-family: 'Space Mono', monospace; font-size: 0.82rem; min-height: 1.2em; }
.form__msg.ok { color: #52e3b0; }
.form__msg.err { color: #ff8080; }

/* ===== Footer ===== */
.footer { border-top: 1px solid var(--line); padding: 40px 0 48px; color: var(--muted); }
.footer__inner { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 24px; }
.footer__brand {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--ink);
}
.footer__brand .it { color: var(--tertiary); }
.footer p, .footer small {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  line-height: 1.9;
}
.footer a { color: var(--ink-2); }

/* ===== Reveal on scroll ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s cubic-bezier(0.19,1,0.22,1), transform 0.7s cubic-bezier(0.19,1,0.22,1); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: 1fr 1fr; }
  .plans { grid-template-columns: 1fr; }
  .cols { grid-template-columns: 1fr; }
  .cta__grid { grid-template-columns: 1fr; }
  .hero__grid { grid-template-columns: 1fr; gap: 32px; }
  .hero__media { order: -1; }
  .media-split { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 640px) {
  .navbar__links { display: none; }
  .navbar__links.open {
    display: flex; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; background: var(--nav-bg);
    backdrop-filter: blur(18px); padding: 16px 24px; gap: 14px;
    border-bottom: 1px solid var(--line);
  }
  .navbar__toggle { display: flex; }
  .cards { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .hero { padding: 68px 0 56px; }
  .section { padding: 56px 0; }
  .cta { padding: 38px 22px; }
}

/* ===================================================================
   LOGIN — pagina de acesso (index.html)
   =================================================================== */
.login {
  min-height: calc(100vh - 160px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px 20px;
  background: var(--hero-bg);
}
.login__card {
  width: 100%;
  max-width: 460px;
  background: var(--card-bg);
  border: 1px solid var(--outline-variant);
  border-radius: 18px;
  box-shadow: var(--card-shadow);
  padding: 40px 36px;
  text-align: center;
}
.login__card h1 {
  margin: 18px 0 10px;
  font-size: 1.9rem;
  color: var(--ink);
}
.login__card .lead {
  color: var(--ink-2);
  margin-bottom: 26px;
}
.login__actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.login__actions .btn {
  width: 100%;
  justify-content: center;
}
.navbar__cta--login {
  background: var(--primary);
  color: #fff;
}