@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/**
 * Unbox Design System - Core Styles
 * Sistema de Faturas v2.0
 * 
 * This file contains the centralized design system:
 * - CSS Variables for theming
 * - Component styles
 * - Utility classes
 * - Responsive behaviors
 */

/* ========================================
   1. CSS VARIABLES (DESIGN TOKENS)
   ======================================== */

:root {
  /* Brand Colors */
  --color-primary: #F26522;
  --color-primary-hover: #d1541b;
  --color-primary-light: #ff8247;

  /* Status Colors */
  --color-success: #10b981;
  --color-success-bg: #d1fae5;
  --color-success-text: #065f46;
  --color-warning: #f59e0b;
  --color-warning-bg: #fef3c7;
  --color-warning-text: #92400e;
  --color-danger: #ef4444;
  --color-danger-bg: #fee2e2;
  --color-danger-text: #991b1b;
  --color-info: #3b82f6;
  --color-info-bg: #dbeafe;
  --color-info-text: #1e40af;

  /* Dark Mode Colors (Default) */
  --bg-primary: #000000;
  --bg-secondary: #121212;
  --bg-surface: #1E1E1E;
  --bg-surface-elevated: #2a2a2a;
  --bg-input: #2d3748;
  --bg-hover: #374151;

  --text-primary: #ffffff;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  --text-disabled: #6b7280;

  --border-color: #1F2937;
  --border-color-light: #4b5563;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;

  --text-xs: 0.75rem;
  /* 12px */
  --text-sm: 0.875rem;
  /* 14px */
  --text-base: 1rem;
  /* 16px */
  --text-lg: 1.125rem;
  /* 18px */
  --text-xl: 1.25rem;
  /* 20px */
  --text-2xl: 1.5rem;
  /* 24px */
  --text-3xl: 1.875rem;
  /* 30px */

  /* Spacing */
  --spacing-1: 0.25rem;
  /* 4px */
  --spacing-2: 0.5rem;
  /* 8px */
  --spacing-3: 0.75rem;
  /* 12px */
  --spacing-4: 1rem;
  /* 16px */
  --spacing-5: 1.25rem;
  /* 20px */
  --spacing-6: 1.5rem;
  /* 24px */
  --spacing-8: 2rem;
  /* 32px */
  --spacing-10: 2.5rem;
  /* 40px */
  --spacing-12: 3rem;
  /* 48px */

  /* Border Radius */
  --radius-sm: 0.5rem;
  /* 8px */
  --radius-md: 0.75rem;
  /* 12px */
  --radius-lg: 1rem;
  /* 16px */
  --radius-full: 9999px;
  /* Circular */

  /* Shadows */
  --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);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* Light Mode Variables */
html.light-mode {
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-surface: #f3f4f6;
  --bg-surface-elevated: #ffffff;
  --bg-input: #ffffff;
  --bg-hover: #f3f4f6;

  --text-primary: #111827;
  --text-secondary: #374151;
  --text-muted: #6b7280;
  --text-disabled: #9ca3af;

  --border-color: #e5e7eb;
  --border-color-light: #d1d5db;

  /* Adjust status colors for light mode */
  --color-success-bg: #d1fae5;
  --color-success-text: #065f46;
  --color-warning-bg: #fef3c7;
  --color-warning-text: #92400e;
  --color-danger-bg: #fee2e2;
  --color-danger-text: #991b1b;
  --color-info-bg: #dbeafe;
  --color-info-text: #1e40af;
}

/* Sidebar Theme Colors */
.sidebar-bg {
  background-color: var(--bg-surface);
}

.sidebar-border {
  border-color: var(--border-color);
}

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

.main-bg {
  background-color: var(--bg-primary);
}


/* ========================================
   2. GLOBAL STYLES
   ======================================== */

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-regular);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  margin: 0;
  padding: 0;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-surface);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-hover);
}

/* ========================================
   3. COMPONENT STYLES
   ======================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3) var(--spacing-5);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  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-color: var(--color-primary);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-danger {
  background-color: var(--color-danger);
  color: white;
}

.btn-danger:hover:not(:disabled) {
  background-color: #dc2626;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-success {
  background-color: var(--color-success);
  color: white;
}

.btn-success:hover:not(:disabled) {
  background-color: #059669;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-sm {
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--text-xs);
}

.btn-lg {
  padding: var(--spacing-4) var(--spacing-6);
  font-size: var(--text-base);
}

/* Cards */
.card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  padding: var(--spacing-4) var(--spacing-6);
  border-bottom: 1px solid var(--border-color);
  font-weight: var(--font-weight-medium);
}

.card-body {
  padding: var(--spacing-6);
}

.card-footer {
  padding: var(--spacing-4) var(--spacing-6);
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-surface-elevated);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

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

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

.badge-danger {
  background-color: var(--color-danger-bg);
  color: var(--color-danger-text);
}

.badge-info {
  background-color: var(--color-info-bg);
  color: var(--color-info-text);
}

.badge-primary {
  background-color: var(--color-primary);
  color: white;
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-4);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-2);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--text-base);
  font-family: var(--font-family);
  background-color: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(242, 101, 34, 0.1);
}

.form-input::placeholder {
  color: var(--text-muted);
}

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

/* Icons */
.icon-scale {
  transform: scale(1.1);
}

/* Logo */
.logo-print {
  max-width: 200px;
  max-height: 80px;
  object-fit: contain;
}

/* ========================================
   4. LAYOUT UTILITIES
   ======================================== */

/* Sidebar Transitions */
#sidebar,
#main-content {
  transition: all var(--transition-normal);
}

/* Default State (Expanded) */
#sidebar {
  width: 16rem;
}

#main-content {
  margin-left: 16rem;
}

.table-desktop {
  display: none;
}

.table-mobile-card {
  display: block;
}

.invoice-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-4);
  margin-bottom: var(--spacing-4);
  border-left: 4px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.invoice-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-3);
}

.invoice-card-number {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

.invoice-card-client {
  font-size: var(--text-base);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin-bottom: var(--spacing-2);
}

.invoice-card-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.invoice-card-value {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-3);
}

.invoice-card-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-3);
  border-top: 1px solid var(--border-color);
}

.invoice-card-footer {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-align: right;
}

@media (min-width: 769px) {
  .table-desktop {
    display: table;
  }

  .table-mobile-card {
    display: none;
  }
}

/* ========================================
   6. THEME TOGGLE BUTTON
   ======================================== */

.theme-toggle {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--spacing-2);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  font-size: var(--text-lg);
}

.theme-toggle:hover {
  color: var(--color-primary);
}

/* ========================================
   7. UTILITY CLASSES
   ======================================== */

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

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

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

.mt-1 {
  margin-top: var(--spacing-1);
}

.mt-2 {
  margin-top: var(--spacing-2);
}

.mt-3 {
  margin-top: var(--spacing-3);
}

.mt-4 {
  margin-top: var(--spacing-4);
}

.mt-6 {
  margin-top: var(--spacing-6);
}

.mb-1 {
  margin-bottom: var(--spacing-1);
}

.mb-2 {
  margin-bottom: var(--spacing-2);
}

.mb-3 {
  margin-bottom: var(--spacing-3);
}

.mb-4 {
  margin-bottom: var(--spacing-4);
}

.mb-6 {
  margin-bottom: var(--spacing-6);
}

.p-2 {
  padding: var(--spacing-2);
}

.p-3 {
  padding: var(--spacing-3);
}

.p-4 {
  padding: var(--spacing-4);
}

.p-6 {
  padding: var(--spacing-6);
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

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

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: var(--spacing-2);
}

.gap-3 {
  gap: var(--spacing-3);
}

.gap-4 {
  gap: var(--spacing-4);
}

.hidden {
  display: none;
}

/* Sidebar Toggle Button Positioning */
.sidebar-toggle-btn {
  left: 240px;
}

html.sidebar-is-collapsed .sidebar-toggle-btn {
  left: 80px;
}

/* ========================================
   8. DATE/MONTH INPUTS FIX (Dark Mode)
   ======================================== */

/* Fix date picker icon visibility and clickability in dark mode */
input[type="date"],
input[type="month"],
input[type="datetime-local"] {
  position: relative;
  cursor: pointer;
}

/* Make the calendar icon visible in dark mode (WebKit browsers) */
input[type="date"]::-webkit-calendar-picker-indicator,
input[type="month"]::-webkit-calendar-picker-indicator,
input[type="datetime-local"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  filter: invert(1);
  /* Invert colors for dark mode */
  opacity: 1;
  background-color: transparent;
  padding: 5px;
}

/* Ensure entire input is clickable */
input[type="date"]::-webkit-inner-spin-button,
input[type="month"]::-webkit-inner-spin-button {
  display: none;
}

/* Light mode: don't invert */
html.light-mode input[type="date"]::-webkit-calendar-picker-indicator,
html.light-mode input[type="month"]::-webkit-calendar-picker-indicator,
html.light-mode input[type="datetime-local"]::-webkit-calendar-picker-indicator {
  filter: none;
}

/* Firefox specific styling */
input[type="date"],
input[type="month"] {
  color-scheme: dark;
}

html.light-mode input[type="date"],
html.light-mode input[type="month"] {
  color-scheme: light;
}