/* ==========================================================================
   LOGIN.CSS - Página de Login Simples
   Sistema de Gestão - Dark Theme
   ========================================================================== */

/* ==========================================================================
   VARIÁVEIS CSS (HERDADAS DO MAIN.CSS)
   ========================================================================== */
:root {
  /* === CORES PRINCIPAIS === */
  --primary-color: #21711B;
  --primary-hover: #1a5a15;
  --primary-light: #2d8a26;
  --primary-dark: #165010;
  
  --secondary-color: #8FAD8C;
  --secondary-hover: #7a9a77;
  --secondary-light: #a4c1a1;
  --secondary-dark: #6b8968;
  
  --success-color: #4CAF50;
  --success-hover: #45a049;
  --success-light: #81C784;
  --success-dark: #2E7D32;
  
  --warning-color: #FF9800;
  --warning-hover: #f57c00;
  --warning-light: #FFB74D;
  --warning-dark: #F57C00;
  
  --danger-color: #f44336;
  --danger-hover: #d32f2f;
  --danger-light: #EF5350;
  --danger-dark: #C62828;
  
  --info-color: #2196F3;
  --info-hover: #1976d2;
  --info-light: #64B5F6;
  --info-dark: #1565C0;
  
  /* === CORES DO TEMA ESCURO === */
  --bg-primary: #121212;
  --bg-secondary: #1e1e1e;
  --bg-tertiary: #2d2d2d;
  --bg-card: #242424;
  --bg-modal: #2d2d2d;
  --bg-sidebar: #1a1a1a;
  
  /* === CORES DE TEXTO === */
  --text-primary: #ffffff;
  --text-secondary: #CED5E8;
  --text-muted: #b0b0b0;
  --text-disabled: #757575;
  --text-inverse: #121212;
  
  /* === CORES DE BORDA === */
  --border-primary: #404040;
  --border-secondary: #333333;
  --border-light: #555555;
  --border-focus: var(--primary-color);
  
  /* === ESPAÇAMENTOS === */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 0.75rem;
  --spacing-lg: 1rem;
  --spacing-xl: 1.25rem;
  --spacing-xxl: 1.5rem;
  
  /* === TIPOGRAFIA === */
  --font-family-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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;
  
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* === BORDAS === */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.375rem;
  --border-radius-lg: 0.5rem;
  --border-radius-xl: 0.75rem;
  --border-radius-2xl: 1rem;
  --border-radius-full: 9999px;
  
  /* === SOMBRAS === */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
  
  /* === TRANSIÇÕES === */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* ==========================================================================
   RESET E BASE
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

*:focus {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* ==========================================================================
   1. LAYOUT PRINCIPAL
   ========================================================================== */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #121212 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

/* Background Pattern */
.login-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.login-pattern {
  position: absolute;
  width: 120%;
  height: 120%;
  background-image: 
    radial-gradient(circle at 25% 75%, rgba(33, 113, 27, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 75% 25%, rgba(76, 175, 80, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(33, 113, 27, 0.03) 0%, transparent 50%);
  animation: patternFloat 20s ease-in-out infinite;
  transform: translate(-10%, -10%);
}

@keyframes patternFloat {
  0%, 100% { transform: translate(-10%, -10%) rotate(0deg); }
  33% { transform: translate(-5%, -15%) rotate(1deg); }
  66% { transform: translate(-15%, -5%) rotate(-1deg); }
}

/* ==========================================================================
   2. CONTAINER E CARD PRINCIPAL
   ========================================================================== */
.main-content {
  position: relative;
  z-index: 10;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-container {
  width: 100%;
  max-width: 400px;
  animation: slideInUp 0.6s ease-out;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-card {
  background: rgba(36, 36, 36, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  position: relative;
}

.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
  opacity: 0.8;
}

/* ==========================================================================
   3. HEADER DO CARD
   ========================================================================== */
.login-header {
  text-align: center;
  padding: var(--spacing-xxl) var(--spacing-xl) var(--spacing-lg);
  background: linear-gradient(135deg, rgba(33, 113, 27, 0.08) 0%, transparent 100%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.system-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
  letter-spacing: 1px;
}

.system-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin: 0;
  font-weight: var(--font-weight-normal);
}

/* ==========================================================================
   4. FLASH MESSAGES
   ========================================================================== */
.flash-messages {
  padding: 0 var(--spacing-xl);
  margin-top: var(--spacing-lg);
}

.alert {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
  animation: slideInDown 0.3s ease;
}

.alert-success {
  background-color: rgba(76, 175, 80, 0.1);
  border: 1px solid rgba(76, 175, 80, 0.3);
  color: var(--success-light);
}

.alert-danger {
  background-color: rgba(244, 67, 54, 0.1);
  border: 1px solid rgba(244, 67, 54, 0.3);
  color: var(--danger-light);
}

.alert-info {
  background-color: rgba(33, 150, 243, 0.1);
  border: 1px solid rgba(33, 150, 243, 0.3);
  color: var(--info-light);
}

.close-alert {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
  margin-left: auto;
}

.close-alert:hover {
  opacity: 1;
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   5. FORMULÁRIO
   ========================================================================== */
.login-form {
  padding: var(--spacing-xl);
}

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

.input-group {
  position: relative;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-base);
  overflow: hidden;
}

.input-group:focus-within {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(33, 113, 27, 0.1);
  background: rgba(255, 255, 255, 0.08);
}

.input-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  color: var(--text-muted);
  font-size: var(--font-size-base);
  transition: color var(--transition-base);
}

.input-group:focus-within .input-icon {
  color: var(--primary-color);
}

.form-control {
  flex: 1;
  padding: var(--spacing-lg) var(--spacing-sm);
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: var(--font-size-base);
  outline: none;
  height: 50px;
}

.form-control::placeholder {
  color: var(--text-muted);
  font-weight: var(--font-weight-normal);
}

.toggle-password {
  position: absolute;
  right: var(--spacing-md);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toggle-password:hover {
  color: var(--primary-color);
  background: rgba(33, 113, 27, 0.1);
}

/* Validação */
.form-feedback {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-xs);
  color: var(--danger-color);
  display: none;
  animation: slideInUp 0.2s ease;
}

.form-group.has-error .input-group {
  border-color: var(--danger-color);
  box-shadow: 0 0 0 4px rgba(244, 67, 54, 0.1);
}

.form-control.error {
  color: var(--danger-light);
}

/* ==========================================================================
   6. OPÇÕES DO FORMULÁRIO
   ========================================================================== */
.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.checkbox-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.checkbox-container input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.checkmark {
  width: 18px;
  height: 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-sm);
  position: relative;
  transition: all var(--transition-fast);
}

.checkbox-container input:checked ~ .checkmark {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.checkbox-container input:checked ~ .checkmark::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 12px;
  font-weight: bold;
}

.forgot-link {
  color: var(--primary-color);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
  position: relative;
}

.forgot-link:hover {
  color: var(--primary-light);
}

.forgot-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--primary-color);
  transition: width var(--transition-fast);
}

.forgot-link:hover::after {
  width: 100%;
}

/* ==========================================================================
   7. BOTÃO DE LOGIN
   ========================================================================== */
.login-btn {
  width: 100%;
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  border: none;
  color: white;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  box-shadow: 0 4px 12px rgba(33, 113, 27, 0.3);
}

.login-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.6s ease;
}

.login-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(33, 113, 27, 0.4);
  background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary-color) 100%);
}

.login-btn:hover::before {
  left: 100%;
}

.login-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(33, 113, 27, 0.3);
}

.login-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-loading {
  display: none;
  align-items: center;
  gap: var(--spacing-sm);
}

.login-btn.loading .btn-text {
  display: none;
}

.login-btn.loading .btn-loading {
  display: flex;
}

/* ==========================================================================
   8. FOOTER DO CARD
   ========================================================================== */
.login-footer {
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-xl);
  background: rgba(18, 18, 18, 0.3);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.login-footer p {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-normal);
}

/* ==========================================================================
   9. LOADING OVERLAY
   ========================================================================== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(18, 18, 18, 0.95);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.loading-overlay.show {
  opacity: 1;
  visibility: visible;
}

.loading-spinner {
  text-align: center;
  color: var(--text-primary);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--spacing-md);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-spinner p {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* ==========================================================================
   10. RESPONSIVIDADE
   ========================================================================== */

/* Tablet */
@media (max-width: 768px) {
  .login-page {
    padding: var(--spacing-md);
  }
  
  .login-container {
    max-width: 100%;
  }
  
  .system-title {
    font-size: var(--font-size-xl);
  }
  
  .form-options {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-sm);
  }
  
  .forgot-link {
    text-align: center;
  }
}

/* Mobile */
@media (max-width: 480px) {
  .login-page {
    padding: var(--spacing-sm);
  }
  
  .login-header {
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-md);
  }
  
  .login-form {
    padding: var(--spacing-lg);
  }
  
  .login-footer {
    padding: var(--spacing-md) var(--spacing-lg);
  }
  
  .system-title {
    font-size: var(--font-size-lg);
  }
  
  .form-control,
  .input-icon {
    height: 45px;
  }
  
  .input-icon {
    width: 45px;
  }
}

/* ==========================================================================
   11. ACESSIBILIDADE E PREFERÊNCIAS
   ========================================================================== */

/* Redução de movimento */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .login-pattern {
    animation: none;
  }
}

/* Alto contraste */
@media (prefers-contrast: high) {
  .login-card {
    border-color: rgba(255, 255, 255, 0.3);
  }
  
  .input-group {
    border-color: rgba(255, 255, 255, 0.3);
  }
  
  .system-title {
    color: #ffffff;
  }
}

/* Estados de foco aprimorados */
.form-control:focus,
.login-btn:focus,
.checkbox-container:focus-within,
.forgot-link:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Animação de erro */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-3px); }
  20%, 40%, 60%, 80% { transform: translateX(3px); }
}

.form-group.has-error {
  animation: shake 0.5s ease-in-out;
}