/* styles/themes/dark-theme.css - Dark Mode Theme */

/* Light Mode Colors (Default) */
:root {
  /* Primary */
  --primary-color: #1a73e8;       /* Google Blue */
  --primary-hover: #1557b0;
  --secondary-color: #34a853;     /* Google Green */

  /* Backgrounds */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e8eaed;

  /* Text */
  --text-primary: #202124;        /* on #ffffff = 15.3:1 ✅ */
  --text-secondary: #5f6368;      /* on #ffffff = 6.4:1 ✅ */

  /* Borders */
  --border-color: #dadce0;

  /* Interactive */
  --link-color: #1a73e8;          /* on #ffffff = 4.6:1 ✅ */
  --error-color: #d93025;         /* on #ffffff = 4.7:1 ✅ */
  --success-color: #34a853;
  --warning-color: #fbbc04;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* Dark Mode Colors */
[data-theme="dark"] {
  /* Primary */
  --primary-color: #8ab4f8;      /* Light Blue - accessible on dark */
  --primary-hover: #aecbfa;
  --secondary-color: #81c995;    /* Light Green */

  /* Backgrounds */
  --bg-primary: #202124;
  --bg-secondary: #292a2d;
  --bg-tertiary: #35363a;

  /* Text */
  --text-primary: #e8eaed;       /* on #202124 = 12.8:1 ✅ */
  --text-secondary: #9aa0a6;     /* on #202124 = 7.2:1 ✅ */

  /* Borders */
  --border-color: #5f6368;

  /* Interactive */
  --link-color: #8ab4f8;         /* on #202124 = 8.1:1 ✅ */
  --error-color: #f28b82;        /* Light Red */
  --success-color: #81c995;
  --warning-color: #fdd663;

  /* Shadows (darker in dark mode) */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
}

/* Button colours live in styles/controls.css and theme via tokens.css.
   Overriding them here beat the shared rules on specificity. */

/* Smooth theme transitions */
* {
  transition: background-color 0.2s ease,
              color 0.2s ease,
              border-color 0.2s ease,
              box-shadow 0.2s ease;
}

/* Reduced motion: instant or minimal animation */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: opacity 0.1s ease !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* Apply theme colors to body */
body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

/* Inputs */
input, textarea, select {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Toolbar */
.toolbar {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

/* Sidebar */
.sidebar {
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
}

/* Canvas area */
.canvas-area {
  background-color: var(--bg-primary);
}

/* Modals */
.modal-content {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
}

/* Cards */
.signature-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.signature-card:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--primary-color);
}

.signature-card.selected {
  border-color: var(--primary-color);
  background-color: var(--bg-tertiary);
}

/* Loading states */
.loading-indicator {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

.spinner {
  border-color: var(--border-color);
  border-top-color: var(--primary-color);
}

/* Progress bars */
.progress-bar {
  background-color: var(--bg-tertiary);
}

.progress-fill {
  background-color: var(--primary-color);
}

/* Error messages */
.error-message {
  background-color: var(--error-color);
  color: #ffffff;
}

/* Success messages */
.success-message {
  background-color: var(--success-color);
  color: #ffffff;
}

/* Tooltips */
.tooltip {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

/* Links */
a {
  color: var(--link-color);
}

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

/* Theme toggle button styles */
.theme-toggle {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  cursor: pointer;
}

.theme-toggle:hover {
  background-color: var(--bg-tertiary);
}

/* Dark mode dropdown arrows */
[data-theme="dark"] #zoom-select,
[data-theme="dark"] .toolbar-actions select {
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%239aa0a6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

.theme-toggle-icon {
  width: 20px;
  height: 20px;
}

/* Dark mode specific adjustments for PDF canvas */
[data-theme="dark"] .pdf-canvas {
  /* Optional: Add subtle border to PDFs in dark mode for better visibility */
  box-shadow: 0 0 0 1px var(--border-color);
}

/* Ensure good contrast for text elements */
[data-theme="dark"] .page-number-label,
[data-theme="dark"] .page-info {
  color: var(--text-primary);
  background-color: var(--bg-secondary);
}

/* Auto dark mode for standalone pages (e.g., phone signature page) using system preference */
@media (prefers-color-scheme: dark) {
  /* Apply dark theme automatically when system prefers dark mode */
  html:not([data-theme]) {
    /* Primary */
    --primary-color: #8ab4f8;
    --primary-hover: #aecbfa;
    --secondary-color: #81c995;

    /* Backgrounds */
    --bg-primary: #202124;
    --bg-secondary: #292a2d;
    --bg-tertiary: #35363a;

    /* Text */
    --text-primary: #e8eaed;
    --text-secondary: #9aa0a6;

    /* Borders */
    --border-color: #5f6368;

    /* Interactive */
    --link-color: #8ab4f8;
    --error-color: #f28b82;
    --success-color: #81c995;
    --warning-color: #fdd663;

    /* Shadows (darker in dark mode) */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
  }
}