/* ========================================
   TECH SEM CRISE - GLOBAL STYLES
   Modo Claro/Escuro com preferência do sistema
   ======================================== */

:root {
  /* Cores - Modo Claro */
  --bg-primary: #F8FAFC;
  --bg-secondary: #FFFFFF;
  --bg-tertiary: #F1F5F9;
  
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-tertiary: #64748B;
  
  --blue-primary: #2563EB;
  --blue-dark: #1E40AF;
  --blue-light: #DBEAFE;
  
  --green-primary: #16A34A;
  --green-light: #DCFCE7;
  
  --border-color: #E2E8F0;
  --border-light: #F1F5F9;
  
  --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);
  
  /* Tipografia */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Espaçamento */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Transições */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Raio de borda */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
}

/* Modo Escuro */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0B1120;
    --bg-secondary: #111827;
    --bg-tertiary: #1F2937;
    
    --text-primary: #F8FAFC;
    --text-secondary: #CBD5E1;
    --text-tertiary: #94A3B8;
    
    --border-color: #334155;
    --border-light: #1F2937;
  }
}

/* Classe explícita para dark mode (localStorage override) */
[data-theme="dark"] {
  --bg-primary: #0B1120;
  --bg-secondary: #111827;
  --bg-tertiary: #1F2937;
  
  --text-primary: #F8FAFC;
  --text-secondary: #CBD5E1;
  --text-tertiary: #94A3B8;
  
  --border-color: #334155;
  --border-light: #1F2937;
}

[data-theme="light"] {
  --bg-primary: #F8FAFC;
  --bg-secondary: #FFFFFF;
  --bg-tertiary: #F1F5F9;
  
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-tertiary: #64748B;
  
  --border-color: #E2E8F0;
  --border-light: #F1F5F9;
}

/* ========================================
   RESET E NORMALIZAÇÃO
   ======================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* ========================================
   TIPOGRAFIA
   ======================================== */

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

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

h2 {
  font-size: var(--font-size-3xl);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: var(--font-size-2xl);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

h4 {
  font-size: var(--font-size-xl);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

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

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

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

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

a:focus-visible {
  outline: 2px solid var(--blue-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Quebra de linha */
a[target="_blank"]::after {
  content: " ↗";
  font-size: 0.8em;
}

strong, b {
  font-weight: 700;
  color: var(--text-primary);
}

em, i {
  font-style: italic;
}

/* Código em linha */
code {
  background-color: var(--bg-tertiary);
  color: var(--blue-dark);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-family: "Monaco", "Courier New", monospace;
  font-size: 0.9em;
}

pre {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

pre code {
  background-color: transparent;
  color: var(--text-primary);
  padding: 0;
  font-size: 0.9em;
}

/* ========================================
   LISTAS
   ======================================== */

ul, ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

li {
  margin-bottom: var(--spacing-sm);
}

ul li {
  list-style-type: disc;
}

ol li {
  list-style-type: decimal;
}

/* ========================================
   TABELAS
   ======================================== */

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

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

table th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

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

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

/* ========================================
   FORMULÁRIOS
   ======================================== */

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

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

input::placeholder {
  color: var(--text-tertiary);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--text-primary);
}

/* ========================================
   BOTÕES
   ======================================== */

button, [role="button"] {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  outline: none;
}

button:focus-visible {
  outline: 2px solid var(--blue-primary);
  outline-offset: 2px;
}

/* Botão Primário */
.btn-primary {
  background-color: var(--blue-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--blue-dark);
}

.btn-primary:active {
  transform: scale(0.98);
}

/* Botão Secundário */
.btn-secondary {
  background-color: transparent;
  color: var(--blue-primary);
  border: 1px solid var(--blue-primary);
}

.btn-secondary:hover {
  background-color: var(--blue-light);
  border-color: var(--blue-dark);
  color: var(--blue-dark);
}

/* ========================================
   CONTAINER E LAYOUT
   ======================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-sm {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Grid simples */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Flex */
.flex {
  display: flex;
  gap: var(--spacing-md);
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* ========================================
   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;
}

.text-center {
  text-align: center;
}

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

.text-small {
  font-size: var(--font-size-sm);
}

.text-large {
  font-size: var(--font-size-lg);
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }
.mt-3xl { margin-top: var(--spacing-3xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }
.mb-3xl { margin-bottom: var(--spacing-3xl); }

.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

/* Visibilidade */
@supports (gap: 1rem) {
  .visually-hidden:not(:focus):not(:active) {
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
    width: 1px;
  }
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}