/* Design System - Bando Translate Web
 * Design tokens, base styles, typography, buttons, forms, layout utilities.
 * Ported from bandoGanttWeb design.css with translate-specific additions.
 */

:root {
  /* Typography - Nunito Font Family */
  --font-family: 'Nunito', sans-serif;

  /* Font Weights */
  --font-light: 300;
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* Font Sizes */
  --text-xs: 10px;
  --text-sm: 12px;
  --text-base: 14px;
  --text-lg: 16px;
  --text-xl: 20px;
  --text-2xl: 24px;

  /* Line Heights */
  --leading-tight: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* Colors - Light Mode */
  --color-text-primary: #333333;
  --color-text-secondary: #555555;
  --color-text-muted: #666666;
  --color-text-inverse: #ffffff;

  --color-background-primary: #ffffff;
  --color-background-secondary: #f5f5f5;
  --color-background-tertiary: #e8e8e8;
  --color-background-hover: #f0f0f0;
  --color-background-selected: #e3f2fd;

  --color-border: #dddddd;
  --color-border-light: #eeeeee;

  --color-primary: #007bff;
  --color-primary-hover: #0069d9;
  --color-accent-secondary: #6c757d;
  --color-success: #4caf7b;
  --color-danger: #dc3545;
  --color-warning: #ff9800;
  --color-info: #17a2b8;
  --color-focus-ring: rgba(0, 123, 255, 0.15);

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 24px;
  --spacing-2xl: 32px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.2);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;

  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal-backdrop: 500;
  --z-modal: 600;
  --z-toast: 700;
  --z-loading: 900;
}

/* Dark Mode Theme - Navy/Indigo color scheme */
[data-theme="dark"] {
  --color-text-primary: #e0e0e0;
  --color-text-secondary: #888888;
  --color-text-muted: #666666;
  --color-text-inverse: #1a1a2e;

  --color-background-primary: #1a1a2e;
  --color-background-secondary: #16213e;
  --color-background-tertiary: #0f0f23;
  --color-background-hover: #252547;
  --color-background-selected: #252560;

  --color-border: #333333;
  --color-border-light: #2d2d5a;

  --color-primary: #6366f1;
  --color-primary-hover: #5558e3;
  --color-accent-secondary: #8b5cf6;
  --color-focus-ring: rgba(99, 102, 241, 0.2);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.5);
}

/* ===== Typography Classes ===== */

.title-large {
  font-family: var(--font-family);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
}

.title {
  font-family: var(--font-family);
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
}

.subtitle {
  font-family: var(--font-family);
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  line-height: var(--leading-normal);
  color: var(--color-text-secondary);
}

.body-text {
  font-family: var(--font-family);
  font-size: var(--text-base);
  font-weight: var(--font-regular);
  line-height: var(--leading-relaxed);
  color: var(--color-text-primary);
}

.small-text {
  font-family: var(--font-family);
  font-size: var(--text-sm);
  font-weight: var(--font-regular);
  line-height: var(--leading-normal);
  color: var(--color-text-muted);
}

.caption {
  font-family: var(--font-family);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  line-height: var(--leading-normal);
  color: var(--color-text-muted);
}

/* ===== Button Styles ===== */

.btn {
  font-family: var(--font-family);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  line-height: var(--leading-normal);
  text-decoration: none;
}

.btn:hover {
  opacity: 0.9;
}

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

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

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

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

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

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

.btn-secondary {
  background: var(--color-background-secondary);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

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

.btn-secondary.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

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

.btn-icon {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  color: var(--color-text-primary);
  font-size: var(--text-lg);
  transition: all var(--transition-normal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.btn-icon:hover {
  background: var(--color-background-hover);
}

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

.btn-lg {
  font-size: var(--text-lg);
  padding: var(--spacing-md) var(--spacing-xl);
}

.bt-review-resolve { font-size: 0.7rem; padding: 0 4px; cursor: pointer; }

/* ===== Form Elements ===== */

.input,
input[type="text"],
input[type="search"],
input[type="number"],
input[type="email"],
textarea {
  font-family: var(--font-family);
  font-size: var(--text-base);
  font-weight: var(--font-regular);
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-background-primary);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast);
}

.input:focus,
input[type="text"]:focus,
input[type="search"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-focus-ring);
}

select {
  font-family: var(--font-family);
  font-size: var(--text-base);
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-background-primary);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-focus-ring);
}

.checkbox {
  margin-right: var(--spacing-sm);
}

label {
  font-family: var(--font-family);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
}

/* ===== Layout Utilities ===== */

.section {
  margin-bottom: var(--spacing-xl);
}

.section-header {
  margin-bottom: var(--spacing-lg);
}

.container {
  padding: var(--spacing-lg);
}

/* Horizontal Alignment */
.align-left {
  text-align: left;
}

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

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

/* Display Utilities */
.hidden {
  display: none !important;
}

.invisible {
  visibility: hidden;
}

.overflow-hidden {
  overflow: hidden;
}

/* ===== Base Element Styles ===== */

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  font-size: var(--text-base);
  font-weight: var(--font-regular);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background: var(--color-background-primary);
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
  margin: 0;
}

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

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