/* ========================================
   BASE.CSS - Estilos Globais
   Mobile-first, sem frameworks
   ======================================== */

:root {
  /* Cores */
  --color-primary: #673de6;
  --color-primary-dark: #5025d1;
  --color-primary-light: #ebe4ff;
  --color-primary-lightest: #673de614;
  --color-secondary: #8564eb;
  --color-accent: #ffcd35;
  --color-success: #00b090;
  --color-error: #fc5185;
  --color-warning: #fea419;

  /* Neutras */
  --color-text: #36344d;
  --color-text-light: #6D7081;
  --color-text-lighter: #dadce0;
  --color-bg: #ffffff;
  --color-bg-secondary: #f2f3f6;
  --color-bg-tertiary: #f4f5ff;
  --color-border: #dadce0;

  /* Dark Mode */
  --color-text-dark: #f2f3f6;
  --color-bg-dark: #1d1e20;
  --color-bg-secondary-dark: #2a2a2a;
  --color-bg-tertiary-dark: #353535;
  --color-border-dark: #dadce03d;

  /* Variantes adicionais */
  --color-success-light: #def4f0;
  --color-success-dark: #008361;
  --color-error-light: #ffe8ef;
  --color-error-dark: #d63163;
  --color-warning-light: #fff8e2;
  --color-warning-dark: #ffcd35;
  --color-info-light: #e0f8ff;
  --color-charts: #b39ef3;
  --color-meteorite: #8c85ff;
  --color-meteorite-light: #d5dfff;
  --color-white-blue: #f4f5ff;
  --color-periwinkle: #c5cde9;
  --color-ghost-white: #fafbff;
  --color-backdrop: rgba(0, 0, 0, 0.5);
  --color-placeholder: rgba(0, 0, 0, 0.6);
  --color-primary-dark-hover: rgba(218, 220, 224, 0.24);

  /* Tipografia */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  --font-family-mono: 'Courier New', 'Monaco', 'Consolas', monospace;

  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 32px;
  --font-size-4xl: 40px;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Espaçamento */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;

  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Transições */
  --transition-fast: 150ms;
  --transition-base: 250ms;
  --transition-slow: 350ms;
}

/* Dark Mode */
html.dark {
  --color-text: var(--color-text-dark);
  --color-bg: var(--color-bg-dark);
  --color-bg-secondary: var(--color-bg-secondary-dark);
  --color-bg-tertiary: var(--color-bg-tertiary-dark);
  --color-border: var(--color-border-dark);
}

/* ========================================
   Reset e Normalizações
   ======================================== */

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ========================================
   Tipografia
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

h1 {
  font-size: var(--font-size-4xl);
  margin-top: var(--spacing-xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
}

p:last-child {
  margin-bottom: 0;
}

strong {
  font-weight: 700;
}

em {
  font-style: italic;
}

code {
  font-family: var(--font-family-mono);
  font-size: 0.9em;
  background-color: var(--color-bg-tertiary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  word-break: break-word;
}

pre {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
}

pre code {
  background-color: transparent;
  padding: 0;
  border-radius: 0;
}

blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--spacing-md);
  margin-left: 0;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
  font-style: italic;
}

/* ========================================
   Links e Interatividade
   ======================================== */

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
  cursor: pointer;
}

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

a:active {
  color: var(--color-primary-dark);
}

/* ========================================
   Listas
   ======================================== */

ul,
ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-2xl);
}

ul > li,
ol > li {
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
  padding-left: var(--spacing-sm);
}

ul > li > ul,
ol > li > ol {
  margin-top: var(--spacing-sm);
}

/* ========================================
   Tabelas
   ======================================== */

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

thead {
  background-color: var(--color-bg-secondary);
}

th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 700;
  border-bottom: 2px solid var(--color-border);
}

td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

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

tbody tr:hover {
  background-color: var(--color-bg-secondary);
}

/* ========================================
   Formulários
   ======================================== */

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  width: 100%;
  max-width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--color-text);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group:last-child {
  margin-bottom: 0;
}

/* ========================================
   Imagens
   ======================================== */

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
}

/* ========================================
   Layout Principal
   ======================================== */

.site-header {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  overflow: visible;
}

.navbar {
  padding: var(--spacing-md) 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
  position: relative;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  white-space: nowrap;
  flex-shrink: 0;
}

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

.logo-img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.icon-logo {
  width: 28px;
  height: 28px;
}

.nav-controls {
  display: none;
  align-items: center;
  gap: var(--spacing-md);
  flex-shrink: 0;
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: var(--spacing-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base);
}

.theme-toggle:hover {
  background-color: var(--color-bg-tertiary);
}

.theme-icon {
  width: 20px;
  height: 20px;
}

.hamburger {
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: var(--spacing-xs);
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base);
}

.hamburger:hover {
  background-color: var(--color-bg-tertiary);
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  display: block;
  transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  padding: 0;
  margin: 0;
  flex-grow: 1;
  justify-content: flex-end;
}

.nav-menu a {
  color: var(--color-text);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-base);
}

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

.nav-menu > li {
  margin-bottom: 0 !important;
}

main {
  flex: 1;
  width: 100%;
}

.main-container {
  max-width: 860px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-md);
  width: 100%;
}

.site-footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) var(--spacing-md);
  margin-top: auto;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer-copy {
  flex: 1;
  min-width: 200px;
}

.footer-copy p {
  margin: 0;
  font-size: var(--font-size-sm);
}

.footer-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  padding: 0;
  margin: 0;
}

.footer-links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--font-size-sm);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-links > li {
  margin-bottom: 0 !important;
}

/* ========================================
   Conteúdo
   ======================================== */

.content-article {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
}

.breadcrumbs {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-light);
}

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

.breadcrumbs a:hover {
  text-decoration: underline;
}

.breadcrumbs span {
  color: var(--color-text);
  font-weight: 600;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-2xl) 0;
}

/* ========================================
   Responsividade
   ======================================== */

@media (max-width: 768px) {
  .main-container {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .nav-controls {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: calc(100% + 32px);
    transform: translateX(-16px);
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-md);
    margin: 0;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    transition: max-height var(--transition-base), visibility var(--transition-base);
    z-index: 99;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }

  .nav-menu.active {
    max-height: 600px;
    visibility: visible;
  }

  .nav-menu > li {
    margin-left: 20px;
  }

  .nav-menu a {
    display: block;
    padding: var(--spacing-sm) 0;
  }

  .nav-container {
    gap: var(--spacing-md);
  }

  h1 {
    font-size: var(--font-size-3xl);
  }

  h2 {
    font-size: var(--font-size-2xl);
  }

  .footer-content {
    flex-direction: column;
    align-items: flex-start;
  }

  table {
    font-size: var(--font-size-sm);
  }

  th,
  td {
    padding: var(--spacing-sm);
  }
}

/* ========================================
   Utilitários
   ======================================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}