/* =========================================================
   Design System — Sakana.ai Inspired
   Gestor de Horas — Documentação
   Tokens, Tipografia, Layout, Componentes, Motion
   ========================================================= */

/* ---- CSS Custom Properties ---- */
:root {
  /* Cores */
  --color-bg: #FFFFFF;
  --color-bg-alt: #FAFAFA;
  --color-card: #FFFFFF;
  --color-border: #ECECEC;
  --color-border-btn: #DDDDDD;
  --color-text-primary: #111111;
  --color-text-secondary: #666666;
  --color-text-muted: #8F8F8F;
  --color-placeholder: #999999;
  --color-accent: #2563EB;
  --color-accent-alt: #4F46E5;

  /* Tipografia */
  --font-sans: 'Inter', 'Geist', 'IBM Plex Sans', system-ui, -apple-system, sans-serif;

  /* Layout */
  --container-max: 1280px;
  --content-max: 760px;
  --section-gap: 120px;

  /* Escala de espaçamento */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;

  /* Motion */
  --duration: 250ms;
  --easing: ease-out;
}

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

html {
  font-size: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 170%;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 8px 4px;
  border-radius: 8px;
  box-shadow: 3px 0px 5px #cccccc;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--duration) var(--easing);
}

a:hover {
  color: var(--color-accent-alt);
  text-decoration: underline;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-text-primary);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 32px 0 8px 0;
}

/* ---- Tipografia ---- */
.hero {
  font-size: 64px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h1,
.heading {
  font-size: 36px;
}

h2,
.subheading {
  font-size: 24px;
}

h3 {
  font-size: 20px;
}

p,
.body {
  font-size: 18px;
  line-height: 170%;
}

.small {
  font-size: 15px;
}

.label {
  font-size: 12px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  display: block;
}

/* ---- Layout ---- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-5);
  width: 100%;
}

.content {
  max-width: var(--content-max);
  margin: 0 auto;
  width: 100%;
}

/* Layout com Sidebar */
.layout-wrapper {
  display: flex;
  flex: 1;
  margin: 0;
  padding: 0;
}

.sidebar {
  width: 280px;
  flex-shrink: 0;
  position: sticky;
  overflow-y: auto;
  padding: var(--space-5);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.sidebar-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  margin: 0;
  padding: 0;
}

.sidebar-title a {
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--duration) var(--easing);
}

.sidebar-title a:hover {
  color: var(--color-accent);
}

.sidebar-menu {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.sidebar-menu li {
  margin: 0;
}

.sidebar-menu a {
  display: block;
  font-size: 15px;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: 8px;
  transition: all var(--duration) var(--easing);
}

.sidebar-menu a:hover {
  color: var(--color-text-primary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  text-decoration: none;
}

.sidebar-menu a[aria-current="page"],
.sidebar-menu a.active {
  color: var(--color-accent);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  font-weight: 500;
}

.content {
  max-width: var(--content-max);
  margin: 0 auto;
  width: 100%;
}

.section {
  padding: var(--space-9) 0;
}

.page-wrapper {
  flex: 1;
  padding: var(--space-9) 0;
}

/* ---- Header / Navbar ---- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--space-8);
}

.site-header .logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
  text-decoration: none;
}

.site-header .logo:hover {
  text-decoration: none;
  color: var(--color-accent);
}

.site-header nav a {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-left: var(--space-5);
  transition: color var(--duration) var(--easing);
}

.site-header nav a:hover {
  color: var(--color-text-primary);
  text-decoration: none;
}

/* ---- Breadcrumb ---- */
.breadcrumb {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb span {
  margin: 0 var(--space-2);
}

/* ---- Botões ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  padding: 12px 24px;
  border-radius: 9999px;
  border: none;
  cursor: pointer;
  transition: all var(--duration) var(--easing);
  text-decoration: none;
  line-height: 1;
}

.btn:hover {
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-text-primary);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: #000000;
  color: #FFFFFF;
}

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

.btn-secondary:hover {
  border-color: var(--color-text-muted);
  background: var(--color-bg-alt);
}

.btn-sm {
  font-size: 13px;
  padding: 8px 16px;
}

/* ---- Cards ---- */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: var(--space-6);
}

/* ---- Formulários ---- */
input,
textarea,
select {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--color-text-primary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 0 var(--space-4);
  height: 52px;
  width: 100%;
  transition: border-color var(--duration) var(--easing);
  outline: none;
}

input::placeholder,
textarea::placeholder {
  color: var(--color-placeholder);
}

input:focus,
textarea:focus,
select:focus {
  border: 2px solid var(--color-accent);
}

textarea {
  height: auto;
  padding: var(--space-4);
  resize: vertical;
}

label {
  display: block;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

/* ---- Tabelas ---- */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: 16px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

th,
td {
  text-align: left;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

th {
  background: var(--color-bg-alt);
  color: var(--color-text-primary);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

tr:last-child td {
  border-bottom: none;
}

/* ---- Imagens de documentação ---- */
.doc-image {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  margin: var(--space-5) 0;
  max-width: var(--content-max);
}

.doc-image+em,
.doc-image+figcaption,
.image-caption {
  display: block;
  font-size: 15px;
  color: var(--color-text-muted);
  font-style: normal;
  margin-top: var(--space-2);
  margin-bottom: var(--space-5);
}

/* ---- Listas ---- */
ul,
ol {
  padding-left: var(--space-5);
  margin: var(--space-4) 0;
}

li {
  margin-bottom: var(--space-2);
}

/* ---- HR ---- */
hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-7) 0;
}

/* ---- Navigation entre páginas ---- */
.page-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.page-nav a {
  font-size: 15px;
  font-weight: 500;
}

.page-nav .nav-next {
  margin-left: auto;
  text-align: right;
}

.page-nav .nav-label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  font-weight: 400;
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
  text-align: center;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: auto;
}

.btn-navegacao {
  display: flex;
  justify-content: space-between;
}

.btn-navegacao a {
  padding: 8px 16px;
  border: 1px solid var(--color-text-muted);
  border-radius: 8px;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: 250ms;
}

.btn-navegacao a:hover {
  color: var(--color-bg-alt);
  background-color: var(--color-accent);
  border: 1px solid var(--color-accent-alt);
}

/* ---- Motion / Animações ---- */
@keyframes fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fade-in var(--duration) var(--easing);
}

.animate-slide-up {
  animation: slide-up var(--duration) var(--easing);
}

/* ---- Sections padrão ---- */
.section-content>*+* {
  margin-top: var(--space-5);
}

.section-content>.label+h2,
.section-content>.label+.heading {
  margin-top: var(--space-4);
}

.section-content>h2+p,
.section-content>.heading+p {
  margin-top: var(--space-4);
}

/* ---- Responsivo ---- */
@media (max-width: 768px) {
  .hero {
    font-size: 40px;
  }

  h1,
  .heading {
    font-size: 28px;
  }

  h2,
  .subheading {
    font-size: 20px;
  }

  body,
  p,
  .body {
    font-size: 16px;
  }

  .container {
    padding: 0 var(--space-4);
  }

  .section {
    padding: var(--space-8) 0;
  }

  .site-header .container {
    height: var(--space-7);
  }

  .site-header nav a {
    font-size: 14px;
    margin-left: var(--space-4);
  }

  .page-nav {
    flex-direction: column;
    text-align: center;
  }

  .page-nav .nav-next {
    margin-left: 0;
    text-align: center;
  }

  /* Sidebar em mobile: escondida ou acima do conteúdo */
  .layout-wrapper {
    flex-direction: column;
    padding: var(--space-6) 0;
  }

  .sidebar {
    width: 100%;
    position: static;
    max-height: none;
  }
}

@media (max-width: 480px) {
  .hero {
    font-size: 32px;
  }

  h1,
  .heading {
    font-size: 24px;
  }

  .site-header .container {
    flex-direction: column;
    height: auto;
    padding: var(--space-4);
    gap: var(--space-3);
  }

  .site-header nav a {
    margin-left: 0;
    margin: 0 var(--space-2);
  }
}