/*
 * base.css - Foundation styles
 * CSS Variables, Dark Mode, Base Styles, Main Content, Flash Messages
 */

/* ========================================
   CSS Variables / Design Tokens
   ======================================== */
:root {
  /* Colors */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-secondary: #64748b;
  --color-success: #22c55e;
  --color-success-light: #86efac;
  --color-success-dark: #16a34a;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-danger-hover: #dc2626;
  --color-purple: #8b5cf6;

  /* Flash/Alert colors */
  --flash-notice-bg: #eff6ff;
  --flash-notice-text: #1e40af;
  --flash-notice-border: #93c5fd;
  --flash-alert-bg: #fef3c7;
  --flash-alert-text: #92400e;
  --flash-alert-border: #fcd34d;

  /* Completion badge colors */
  --badge-complete-bg: #dcfce7;
  --badge-complete-text: #166534;
  --badge-high-bg: #dbeafe;
  --badge-high-text: #1e40af;
  --badge-medium-bg: #fef3c7;
  --badge-medium-text: #92400e;
  --badge-low-bg: #fee2e2;
  --badge-low-text: #991b1b;

  /* Warning section colors */
  --warning-bg: #fffbeb;
  --warning-border: #fcd34d;
  --warning-text: #92400e;

  /* Info section colors */
  --info-bg: #e0f2fe;
  --info-text: #0369a1;

  /* Progress colors */
  --progress-complete: #22c55e;
  --progress-almost: #84cc16;
  --progress-good: #eab308;
  --progress-started: #f97316;
  --progress-empty: #e5e7eb;

  /* Calendar colors */
  --calendar-complete-bg: #86efac;
  --calendar-complete-text: #166534;
  --calendar-incomplete-bg: #fca5a5;
  --calendar-incomplete-text: #991b1b;

  /* Backgrounds */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-today: #eff6ff;

  /* Text */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;

  /* Borders */
  --border-color: #d6dde6;
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --border-radius-lg: 10px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 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);

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;

  /* Color scheme */
  color-scheme: light dark;
}

/* ========================================
   Dark Mode
   ======================================== */
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    --color-primary: #60a5fa;
    --color-primary-hover: #93c5fd;
    --color-secondary: #94a3b8;
    --color-success: #4ade80;
    --color-success-light: #86efac;
    --color-success-dark: #22c55e;
    --color-warning: #fbbf24;
    --color-danger: #f87171;
    --color-danger-hover: #fca5a5;
    --color-purple: #a78bfa;

    /* Flash/Alert colors */
    --flash-notice-bg: #064e3b;
    --flash-notice-text: #6ee7b7;
    --flash-notice-border: #059669;
    --flash-alert-bg: #7f1d1d;
    --flash-alert-text: #fca5a5;
    --flash-alert-border: #dc2626;

    /* Completion badge colors */
    --badge-complete-bg: #064e3b;
    --badge-complete-text: #6ee7b7;
    --badge-high-bg: #1e3a5f;
    --badge-high-text: #93c5fd;
    --badge-medium-bg: #78350f;
    --badge-medium-text: #fcd34d;
    --badge-low-bg: #7f1d1d;
    --badge-low-text: #fca5a5;

    /* Warning section colors */
    --warning-bg: #78350f;
    --warning-border: #d97706;
    --warning-text: #fcd34d;

    /* Info section colors */
    --info-bg: #1e3a5f;
    --info-text: #7dd3fc;

    /* Progress colors */
    --progress-complete: #4ade80;
    --progress-almost: #a3e635;
    --progress-good: #facc15;
    --progress-started: #fb923c;
    --progress-empty: #374151;

    /* Calendar colors */
    --calendar-complete-bg: #166534;
    --calendar-complete-text: #86efac;
    --calendar-incomplete-bg: #991b1b;
    --calendar-incomplete-text: #fca5a5;

    /* Backgrounds */
    --bg-primary: #1f2937;
    --bg-secondary: #111827;
    --bg-tertiary: #374151;
    --bg-today: #1e3a5f;

    /* Text */
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;

    /* Borders */
    --border-color: #4b5563;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  }
}

/* Manual dark mode override */
[data-theme="dark"] {
  --color-primary: #60a5fa;
  --color-primary-hover: #93c5fd;
  --color-secondary: #94a3b8;
  --color-success: #4ade80;
  --color-success-light: #86efac;
  --color-success-dark: #22c55e;
  --color-warning: #fbbf24;
  --color-danger: #f87171;
  --color-danger-hover: #fca5a5;
  --color-purple: #a78bfa;

  /* Flash/Alert colors */
  --flash-notice-bg: #064e3b;
  --flash-notice-text: #6ee7b7;
  --flash-notice-border: #059669;
  --flash-alert-bg: #7f1d1d;
  --flash-alert-text: #fca5a5;
  --flash-alert-border: #dc2626;

  /* Completion badge colors */
  --badge-complete-bg: #064e3b;
  --badge-complete-text: #6ee7b7;
  --badge-high-bg: #1e3a5f;
  --badge-high-text: #93c5fd;
  --badge-medium-bg: #78350f;
  --badge-medium-text: #fcd34d;
  --badge-low-bg: #7f1d1d;
  --badge-low-text: #fca5a5;

  /* Warning section colors */
  --warning-bg: #78350f;
  --warning-border: #d97706;
  --warning-text: #fcd34d;

  /* Info section colors */
  --info-bg: #1e3a5f;
  --info-text: #7dd3fc;

  /* Progress colors */
  --progress-complete: #4ade80;
  --progress-almost: #a3e635;
  --progress-good: #facc15;
  --progress-started: #fb923c;
  --progress-empty: #374151;

  /* Calendar colors */
  --calendar-complete-bg: #166534;
  --calendar-complete-text: #86efac;
  --calendar-incomplete-bg: #991b1b;
  --calendar-incomplete-text: #fca5a5;

  /* Backgrounds */
  --bg-primary: #1f2937;
  --bg-secondary: #111827;
  --bg-tertiary: #374151;
  --bg-today: #1e3a5f;

  /* Text */
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  /* Borders */
  --border-color: #4b5563;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

/* Manual light mode override */
[data-theme="light"] {
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-secondary: #64748b;
  --color-success: #22c55e;
  --color-success-light: #86efac;
  --color-success-dark: #16a34a;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-danger-hover: #dc2626;
  --color-purple: #8b5cf6;

  /* Flash/Alert colors */
  --flash-notice-bg: #eff6ff;
  --flash-notice-text: #1e40af;
  --flash-notice-border: #93c5fd;
  --flash-alert-bg: #fef3c7;
  --flash-alert-text: #92400e;
  --flash-alert-border: #fcd34d;

  /* Completion badge colors */
  --badge-complete-bg: #dcfce7;
  --badge-complete-text: #166534;
  --badge-high-bg: #dbeafe;
  --badge-high-text: #1e40af;
  --badge-medium-bg: #fef3c7;
  --badge-medium-text: #92400e;
  --badge-low-bg: #fee2e2;
  --badge-low-text: #991b1b;

  /* Warning section colors */
  --warning-bg: #fffbeb;
  --warning-border: #fcd34d;
  --warning-text: #92400e;

  /* Info section colors */
  --info-bg: #e0f2fe;
  --info-text: #0369a1;

  /* Progress colors */
  --progress-complete: #22c55e;
  --progress-almost: #84cc16;
  --progress-good: #eab308;
  --progress-started: #f97316;
  --progress-empty: #e5e7eb;

  /* Calendar colors */
  --calendar-complete-bg: #86efac;
  --calendar-complete-text: #166534;
  --calendar-incomplete-bg: #fca5a5;
  --calendar-incomplete-text: #991b1b;

  /* Backgrounds */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-today: #eff6ff;

  /* Text */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;

  /* Borders */
  --border-color: #d6dde6;

  /* Shadows */
  --shadow-sm: 0 1px 2px 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);
}

/* ========================================
   Base Styles
   ======================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  margin: 0;
  padding: 0;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Main Content
   ======================================== */
.main-content {
  flex: 1;
  padding: var(--spacing-sm);
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

/* ========================================
   Flash Messages
   ======================================== */
.flash-notice,
.flash-alert {
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
}

.flash-notice {
  background-color: var(--flash-notice-bg);
  color: var(--flash-notice-text);
  border: 1px solid var(--flash-notice-border);
}

.flash-alert {
  background-color: var(--flash-alert-bg);
  color: var(--flash-alert-text);
  border: 1px solid var(--flash-alert-border);
}