/*
 * Inner Rhythm Health - Global Theme System
 * This file defines the foundational design system for all IRH pages
 * Include this file first in all pages to ensure consistent theming
 */

/* ============================================================================
   CSS CUSTOM PROPERTIES (CSS Variables) - Global Theme
   ============================================================================ */

:root {
    /* Primary Brand Colors */
    --irh-teal-primary: #008080;
    --irh-teal-light: #e0f2f2;
    --irh-teal-dark: #006666;
    --irh-teal-darker: #004d4d;

    /* Secondary Brand Colors */
    --irh-gold-primary: #d4af37;
    --irh-gold-light: #f9f3dd;
    --irh-gold-dark: #b8960b;
    --irh-gold-darker: #9c7f09;

    /* Neutral Colors */
    --irh-white: #ffffff;
    --irh-black: #000000;
    --irh-gray-50: #f9fafb;
    --irh-gray-100: #f3f4f6;
    --irh-gray-200: #e5e7eb;
    --irh-gray-300: #d1d5db;
    --irh-gray-400: #9ca3af;
    --irh-gray-500: #6b7280;
    --irh-gray-600: #4b5563;
    --irh-gray-700: #374151;
    --irh-gray-800: #1f2937;
    --irh-gray-900: #111827;

    /* Semantic Colors */
    --irh-success: #10b981;
    --irh-success-light: #d1fae5;
    --irh-warning: #f59e0b;
    --irh-warning-light: #fef3c7;
    --irh-error: #ef4444;
    --irh-error-light: #fee2e2;
    --irh-info: #3b82f6;
    --irh-info-light: #dbeafe;

    /* Typography Colors */
    --irh-text-primary: #1f2937;
    --irh-text-secondary: #6b7280;
    --irh-text-tertiary: #9ca3af;
    --irh-text-on-dark: #ffffff;
    --irh-text-on-teal: #ffffff;
    --irh-text-on-gold: #1f2937;

    /* Background Colors */
    --irh-bg-primary: #ffffff;
    --irh-bg-secondary: #f9fafb;
    --irh-bg-tertiary: #f3f4f6;
    --irh-bg-overlay: rgba(0, 0, 0, 0.5);

    /* Border Colors */
    --irh-border-light: #e5e7eb;
    --irh-border-medium: #d1d5db;
    --irh-border-dark: #9ca3af;

    /* Shadow Variables */
    --irh-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --irh-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --irh-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --irh-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Typography Scale */
    --irh-font-family-primary: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --irh-font-family-secondary: Georgia, 'Times New Roman', serif;
    --irh-font-family-mono: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;

    /* Font Sizes */
    --irh-text-xs: 0.75rem;     /* 12px */
    --irh-text-sm: 0.875rem;    /* 14px */
    --irh-text-base: 1rem;      /* 16px */
    --irh-text-lg: 1.125rem;    /* 18px */
    --irh-text-xl: 1.25rem;     /* 20px */
    --irh-text-2xl: 1.5rem;     /* 24px */
    --irh-text-3xl: 1.875rem;   /* 30px */
    --irh-text-4xl: 2.25rem;    /* 36px */
    --irh-text-5xl: 3rem;       /* 48px */

    /* Font Weights */
    --irh-font-light: 300;
    --irh-font-normal: 400;
    --irh-font-medium: 500;
    --irh-font-semibold: 600;
    --irh-font-bold: 700;

    /* Line Heights */
    --irh-leading-tight: 1.25;
    --irh-leading-snug: 1.375;
    --irh-leading-normal: 1.5;
    --irh-leading-relaxed: 1.625;
    --irh-leading-loose: 2;

    /* Spacing Scale */
    --irh-space-1: 0.25rem;     /* 4px */
    --irh-space-2: 0.5rem;      /* 8px */
    --irh-space-3: 0.75rem;     /* 12px */
    --irh-space-4: 1rem;        /* 16px */
    --irh-space-5: 1.25rem;     /* 20px */
    --irh-space-6: 1.5rem;      /* 24px */
    --irh-space-8: 2rem;        /* 32px */
    --irh-space-10: 2.5rem;     /* 40px */
    --irh-space-12: 3rem;       /* 48px */
    --irh-space-16: 4rem;       /* 64px */
    --irh-space-20: 5rem;       /* 80px */
    --irh-space-24: 6rem;       /* 96px */

    /* Border Radius */
    --irh-radius-sm: 0.125rem;   /* 2px */
    --irh-radius-md: 0.375rem;   /* 6px */
    --irh-radius-lg: 0.5rem;     /* 8px */
    --irh-radius-xl: 0.75rem;    /* 12px */
    --irh-radius-2xl: 1rem;      /* 16px */
    --irh-radius-full: 9999px;   /* Full rounding */

    /* Transition Variables */
    --irh-transition-fast: 150ms ease-in-out;
    --irh-transition-normal: 300ms ease-in-out;
    --irh-transition-slow: 500ms ease-in-out;

    /* Z-Index Scale */
    --irh-z-dropdown: 1000;
    --irh-z-sticky: 1020;
    --irh-z-fixed: 1030;
    --irh-z-modal-backdrop: 1040;
    --irh-z-modal: 1050;
    --irh-z-popover: 1060;
    --irh-z-tooltip: 1070;
    --irh-z-toast: 1080;
}

/* ============================================================================
   GLOBAL BASE STYLES
   ============================================================================ */

/* Apply theme foundation to all pages */
* {
    box-sizing: border-box;
}

html {
    font-family: var(--irh-font-family-primary);
    line-height: var(--irh-leading-normal);
    color: var(--irh-text-primary);
    background-color: var(--irh-bg-primary);
}

body {
    margin: 0;
    padding: 0;
    font-size: var(--irh-text-base);
    font-weight: var(--irh-font-normal);
    background-color: var(--irh-bg-primary);
    color: var(--irh-text-primary);
}

/* ============================================================================
   UTILITY CLASSES FOR COMMON PATTERNS
   ============================================================================ */

/* Color Utilities */
.irh-text-teal { color: var(--irh-teal-primary); }
.irh-text-gold { color: var(--irh-gold-primary); }
.irh-text-primary { color: var(--irh-text-primary); }
.irh-text-secondary { color: var(--irh-text-secondary); }

.irh-bg-teal { background-color: var(--irh-teal-primary); }
.irh-bg-gold { background-color: var(--irh-gold-primary); }
.irh-bg-teal-light { background-color: var(--irh-teal-light); }
.irh-bg-gold-light { background-color: var(--irh-gold-light); }

/* Button Base Classes */
.irh-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--irh-space-2) var(--irh-space-4);
    font-family: var(--irh-font-family-primary);
    font-size: var(--irh-text-base);
    font-weight: var(--irh-font-medium);
    line-height: var(--irh-leading-tight);
    border: none;
    border-radius: var(--irh-radius-md);
    cursor: pointer;
    transition: all var(--irh-transition-normal);
    text-decoration: none;
}

.irh-btn-primary {
    background-color: var(--irh-teal-primary);
    color: var(--irh-text-on-teal);
}

.irh-btn-primary:hover {
    background-color: var(--irh-teal-dark);
    color: var(--irh-text-on-teal);
    text-decoration: none;
}

.irh-btn-secondary {
    background-color: var(--irh-gold-primary);
    color: var(--irh-text-on-gold);
}

.irh-btn-secondary:hover {
    background-color: var(--irh-gold-dark);
    color: var(--irh-text-on-gold);
    text-decoration: none;
}

/* Typography Utilities */
.irh-heading-1 {
    font-size: var(--irh-text-4xl);
    font-weight: var(--irh-font-bold);
    line-height: var(--irh-leading-tight);
    color: var(--irh-text-primary);
    margin: 0 0 var(--irh-space-6) 0;
}

.irh-heading-2 {
    font-size: var(--irh-text-3xl);
    font-weight: var(--irh-font-semibold);
    line-height: var(--irh-leading-tight);
    color: var(--irh-text-primary);
    margin: 0 0 var(--irh-space-4) 0;
}

.irh-heading-3 {
    font-size: var(--irh-text-2xl);
    font-weight: var(--irh-font-semibold);
    line-height: var(--irh-leading-snug);
    color: var(--irh-text-primary);
    margin: 0 0 var(--irh-space-3) 0;
}

/* Card Component */
.irh-card {
    background-color: var(--irh-bg-primary);
    border: 1px solid var(--irh-border-light);
    border-radius: var(--irh-radius-lg);
    box-shadow: var(--irh-shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--irh-transition-normal);
}

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

.irh-card-header {
    padding: var(--irh-space-6);
    border-bottom: 1px solid var(--irh-border-light);
    background-color: var(--irh-bg-secondary);
}

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

.irh-card-footer {
    padding: var(--irh-space-6);
    border-top: 1px solid var(--irh-border-light);
    background-color: var(--irh-bg-secondary);
}

/* ============================================================================
   LEGACY COMPATIBILITY
   ============================================================================ */

/* Maintain compatibility with existing CSS custom properties */
:root {
    --teal-primary: var(--irh-teal-primary);
    --teal-light: var(--irh-teal-light);
    --teal-dark: var(--irh-teal-dark);
    --gold-primary: var(--irh-gold-primary);
    --gold-light: var(--irh-gold-light);
    --gold-dark: var(--irh-gold-dark);
}