/**
 * 🎨 Estilos Principais
 * 
 * Estilos base e layout da aplicação
 */

/* ========== RESET E BASE ========== */

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

:root {
  /* 🎨 Cores Chatwoot - Integrado */
  --color-primary: #1f93ff;
  --color-primary-light: #5fb3ff;
  --color-primary-dark: #0077e6;
  
  /* Cores Status */
  --color-success: #44ce4b;
  --color-warning: #ffab00;
  --color-warning-bg: #fff8e6;
  --color-error: #ff6b6b;
  --color-info: #1f93ff;
  
  /* Cores de texto - Minimalista */
  --color-text-primary: #1f2d3d;
  --color-text-secondary: #64748b;
  --color-text-tertiary: #94a3b8;
  
  /* Cores de fundo - Clean */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;
  --color-bg-hover: #fafbfc;
  
  /* Cores de borda - Sutis */
  --color-border-primary: #e8edf2;
  --color-border-secondary: #dfe4ea;
  
  /* Sombras Minimalistas */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 8px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 12px 24px -4px rgba(0, 0, 0, 0.08);
  
  /* Espaçamentos */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  
  /* Border radius - Clean */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Transições Suaves */
  --transition-fast: 150ms ease-out;
  --transition-normal: 250ms ease-out;
  --transition-slow: 350ms ease-out;
  
  /* Typography - Anti-aliased */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', 
                  Roboto, Oxygen, Ubuntu, sans-serif;
}

body {
  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg-secondary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

/* ========== CONTAINER ========== */

.container {
  max-width: 100%;
  margin: 0;
  padding: var(--spacing-sm);
}

@media (min-width: 1440px) {
  .container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md);
  }
}

/* ========== GRID LAYOUTS ========== */

.grid {
  display: grid;
  gap: var(--spacing-sm);
}

@media (min-width: 1200px) {
  .grid {
    gap: var(--spacing-md);
  }
}

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

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

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

/* Ajuste para iframe do Chatwoot (~900px) */
@media (max-width: 1100px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ========== CARDS ========== */

.card {
  background: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border-primary);
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-normal);
  position: relative;
}

@media (min-width: 1200px) {
  .card {
    padding: 24px;
  }
}

.card:hover {
  border-color: var(--color-border-secondary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.card.loading {
  opacity: 0.6;
  pointer-events: none;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border-primary);
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.card-title svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
}

.card-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.card-timestamp {
  font-size: 11px;
  color: var(--color-text-tertiary);
}

.card-content {
  position: relative;
  min-height: 100px;
}

/* ========== BOTÕES ========== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 2px 4px rgba(31, 147, 255, 0.2);
}

.btn-primary:hover:not(:disabled) {
  background: #0d7de0;
  box-shadow: 0 4px 8px rgba(31, 147, 255, 0.3);
  transform: translateY(-1px);
}

.btn-success {
  background: var(--color-success);
  color: white;
  box-shadow: 0 2px 4px rgba(68, 206, 75, 0.2);
}

.btn-success:hover:not(:disabled) {
  background: #3ab941;
  box-shadow: 0 4px 8px rgba(68, 206, 75, 0.3);
  transform: translateY(-1px);
}

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

.btn-secondary:hover:not(:disabled) {
  background: var(--color-border-primary);
}

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-secondary);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover:not(:disabled) {
  background: var(--color-bg-hover);
  color: var(--color-primary);
}

.btn-icon svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
}

/* ========== BADGES ========== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-full);
}

.badge-success {
  background: #f6ffed;
  color: #389e0d;
  border: 1px solid #b7eb8f;
}

.badge-warning {
  background: #fff7e6;
  color: #d46b08;
  border: 1px solid #ffd591;
}

.badge-error {
  background: #fff1f0;
  color: #cf1322;
  border: 1px solid #ffa39e;
}

.badge-info {
  background: #e6f7ff;
  color: #096dd9;
  border: 1px solid #91d5ff;
}

/* ========== STATUS INDICATOR ========== */

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.status-indicator::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: currentColor;
  animation: pulse 2s ease-in-out infinite;
}

.status-indicator.online {
  color: var(--color-success);
}

.status-indicator.offline {
  color: var(--color-error);
}

.status-indicator.offline::before {
  animation: none;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.1);
  }
}

/* ========== FORMS ========== */

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

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.form-input,
.form-select {
  width: 100%;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(31, 147, 255, 0.1);
}

.form-input:disabled,
.form-select:disabled {
  background: var(--color-bg-secondary);
  cursor: not-allowed;
  opacity: 0.6;
}

/* ========== EMPTY STATES ========== */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  color: var(--color-text-tertiary);
  text-align: center;
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-state-text {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* ========== ERROR STATE ========== */

.error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  text-align: center;
}

.error-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
}

.error-message {
  font-size: 14px;
  color: var(--color-error);
  margin-bottom: var(--spacing-md);
}

.btn-retry {
  margin-top: var(--spacing-sm);
}

/* ========== UTILITIES ========== */

.hidden {
  display: none !important;
}

.invisible {
  visibility: hidden !important;
}

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

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

.text-primary {
  color: var(--color-primary);
}

.text-success {
  color: var(--color-success);
}

.text-warning {
  color: var(--color-warning);
}

.text-error {
  color: var(--color-error);
}

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

.font-bold {
  font-weight: 600;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ========== RESPONSIVE ADJUSTMENTS ========== */

@media (max-width: 1200px) {
  .container {
    padding: var(--spacing-md);
  }
}

@media (max-width: 1024px) {
  .container {
    padding: var(--spacing-md) var(--spacing-sm);
  }
  
  .card {
    padding: var(--spacing-md);
  }
  
  .card-title {
    font-size: 14px;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 13px;
  }
  
  .container {
    padding: var(--spacing-sm);
    gap: var(--spacing-sm);
  }
  
  .card {
    padding: var(--spacing-md);
  }
  
  .card-header {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
  }
  
  .card-title {
    font-size: 13px;
  }
  
  .card-actions {
    width: 100%;
    justify-content: flex-end;
  }
  
  #pppoe-selector {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: var(--spacing-xs);
  }
  
  #pppoe-selector .form-label {
    font-size: 12px;
  }
  
  #pppoe-select,
  .pppoe-text {
    max-width: 100%;
    width: 100%;
    font-size: 13px;
  }
  
  /* Ajusta toolbar em mobile */
  .toolbar {
    padding: var(--spacing-sm);
    gap: var(--spacing-sm);
  }
}

@media (max-width: 640px) {
  body {
    font-size: 13px;
  }
  
  .container {
    padding: var(--spacing-xs);
    gap: var(--spacing-xs);
  }
  
  .card {
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
  }
  
  .card-header {
    padding-bottom: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
  }
  
  .card-title {
    font-size: 13px;
  }
  
  .toolbar {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .btn {
    font-size: 12px;
    padding: 6px 12px;
  }
  
  .btn-icon {
    padding: 6px;
  }
  
  .btn-icon svg {
    width: 14px;
    height: 14px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 12px;
  }
  
  .container {
    padding: 6px;
    gap: 6px;
  }
  
  .card {
    padding: 10px;
  }
  
  .card-title {
    font-size: 12px;
  }
  
  .toolbar {
    flex-direction: column;
    align-items: stretch;
    padding: var(--spacing-xs);
    gap: var(--spacing-xs);
  }
  
  #pppoe-selector {
    width: 100%;
  }
  
  .toolbar-actions {
    width: 100%;
    justify-content: space-between;
  }
}