/* CSS Custom Properties (Theme) */
/* Visual design inspired by modern app interfaces with light/dark mode support */

:root {
  /* ===== Light Theme (Default) ===== */

  /* Backgrounds - off-white with white cards */
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f0f1f2;
  --bg-elevated: #ffffff;

  /* Text */
  --text-primary: #1a1a2e;
  --text-secondary: #64748b;
  --text-tertiary: #94a3b8;
  --text-inverse: #ffffff;

  /* Borders & Dividers */
  --border-color: #e2e8f0;
  --border-subtle: #f1f5f9;
  --border-strong: #cbd5e1;

  /* Primary Accent - Teal/Emerald */
  --accent-color: #10b981;
  --accent-hover: #059669;
  --accent-subtle: rgba(16, 185, 129, 0.1);
  --accent-text: #ffffff;

  /* Secondary Accent - Amber */
  --secondary-accent: #f59e0b;
  --secondary-accent-hover: #d97706;
  --secondary-accent-subtle: rgba(245, 158, 11, 0.1);

  /* Status Colors */
  --success-color: #10b981;
  --success-bg: #ecfdf5;
  --success-border: #a7f3d0;

  --warning-color: #f59e0b;
  --warning-bg: #fffbeb;
  --warning-border: #fde68a;

  --error-color: #ef4444;
  --error-bg: #fef2f2;
  --error-border: #fecaca;
  --error-text: #dc2626;

  --info-color: #3b82f6;
  --info-bg: #eff6ff;
  --info-border: #bfdbfe;

  /* Interactive States */
  --hover-bg: rgba(0, 0, 0, 0.04);
  --active-bg: rgba(0, 0, 0, 0.08);
  --focus-ring: rgba(16, 185, 129, 0.4);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.1s ease;
  --transition-base: 0.15s ease;
  --transition-slow: 0.3s ease;

  /* Font stacks */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --font-mono: 'Inconsolata', 'SF Mono', Monaco, 'Cascadia Code', monospace;

  /* Z-index layers */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-tooltip: 400;
}

/* ===== Dark Theme ===== */
[data-theme='dark'] {
  /* Backgrounds - warm dark grays */
  --bg-primary: #242220;
  --bg-secondary: #1f1e1c;
  --bg-tertiary: #2a2826;
  --bg-elevated: #2c2a28;

  /* Text - slightly warm */
  --text-primary: #f5f3f0;
  --text-secondary: #a39e96;
  --text-tertiary: #6e6962;
  --text-inverse: #1a1a1a;

  /* Borders & Dividers */
  --border-color: #353230;
  --border-subtle: #2c2a28;
  --border-strong: #464340;

  /* Primary Accent - Pale Yellow */
  --accent-color: #ccbf6b;
  --accent-hover: #d6cb78;
  --accent-subtle: rgba(204, 191, 107, 0.15);
  --accent-text: #2c2822;

  /* Secondary Accent - Warm Rose */
  --secondary-accent: #c9736e;
  --secondary-accent-hover: #d8908b;
  --secondary-accent-subtle: rgba(201, 115, 110, 0.15);

  /* Status Colors */
  --success-color: #22c55e;
  --success-bg: rgba(34, 197, 94, 0.15);
  --success-border: rgba(34, 197, 94, 0.3);

  --warning-color: #e0a840;
  --warning-bg: rgba(224, 168, 64, 0.15);
  --warning-border: rgba(224, 168, 64, 0.3);

  --error-color: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.4);
  --error-border: rgba(239, 68, 68, 0.5);
  --error-text: #fcd5d5;

  --info-color: #3b82f6;
  --info-bg: rgba(59, 130, 246, 0.15);
  --info-border: rgba(59, 130, 246, 0.3);

  /* Interactive States */
  --hover-bg: rgba(255, 255, 255, 0.06);
  --active-bg: rgba(255, 255, 255, 0.1);
  --focus-ring: rgba(204, 191, 107, 0.4);

  /* Shadows - subtler in dark mode */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --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, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
}

/* Auto dark mode based on system preference (when no explicit theme set) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    /* Backgrounds - warm dark grays */
    --bg-primary: #242220;
    --bg-secondary: #1f1e1c;
    --bg-tertiary: #2a2826;
    --bg-elevated: #2c2a28;

    /* Text - slightly warm */
    --text-primary: #f5f3f0;
    --text-secondary: #a39e96;
    --text-tertiary: #6e6962;
    --text-inverse: #1a1a1a;

    /* Borders & Dividers */
    --border-color: #353230;
    --border-subtle: #2c2a28;
    --border-strong: #464340;

    /* Primary Accent - Pale Yellow */
    --accent-color: #ccbf6b;
    --accent-hover: #d6cb78;
    --accent-subtle: rgba(204, 191, 107, 0.15);
    --accent-text: #2c2822;

    /* Secondary Accent - Warm Rose */
    --secondary-accent: #c9736e;
    --secondary-accent-hover: #d8908b;
    --secondary-accent-subtle: rgba(201, 115, 110, 0.15);

    /* Status Colors */
    --success-color: #22c55e;
    --success-bg: rgba(34, 197, 94, 0.15);
    --success-border: rgba(34, 197, 94, 0.3);

    --warning-color: #e0a840;
    --warning-bg: rgba(224, 168, 64, 0.15);
    --warning-border: rgba(224, 168, 64, 0.3);

    --error-color: #ef4444;
    --error-bg: rgba(239, 68, 68, 0.4);
    --error-border: rgba(239, 68, 68, 0.5);
    --error-text: #fcd5d5;

    --info-color: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.15);
    --info-border: rgba(59, 130, 246, 0.3);

    /* Interactive States */
    --hover-bg: rgba(255, 255, 255, 0.06);
    --active-bg: rgba(255, 255, 255, 0.1);
    --focus-ring: rgba(204, 191, 107, 0.4);

    /* Shadows - subtler in dark mode */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --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, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
  }
}

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

/* Smooth theme transitions */
body {
  transition:
    background-color var(--transition-slow),
    color var(--transition-slow);
}

/* Prevent CLS before custom element upgrade */
app-shell:not(:defined) {
  display: block;
  min-height: 100vh;
  background: var(--bg-primary);
}

app-header:not(:defined) {
  display: block;
  height: 56px;
}