/* ========================================
   Deedpaths Design System
   Central design tokens and CSS variables
   ======================================== */

:root {
    /* ========================================
       Phase Colors
       ======================================== */
    --phase-1-color: #28a745;  /* Green - Starting, dreaming */
    --phase-2-color: #0073ea;  /* Blue - Planning, finances */
    --phase-3-color: #6f42c1;  /* Purple - Searching, exploring */
    --phase-4-color: #fd7e14;  /* Orange - Action, negotiating */
    --phase-5-color: #dc3545;  /* Red - Urgency, preparing */
    --phase-6-color: #20c997;  /* Teal - Completion, moving in */

    /* Phase color variants */
    --phase-1-light: #d4edda;
    --phase-2-light: #cce5ff;
    --phase-3-light: #e2d9f3;
    --phase-4-light: #ffe5d0;
    --phase-5-light: #f8d7da;
    --phase-6-light: #d1f2eb;

    --phase-1-dark: #1e7e34;
    --phase-2-dark: #0056b3;
    --phase-3-dark: #5a32a3;
    --phase-4-dark: #dc6800;
    --phase-5-dark: #bd2130;
    --phase-6-dark: #17a2b8;

    /* ========================================
       Base Colors
       ======================================== */
    --color-primary: #0073ea;
    --color-primary-dark: #0056b3;
    --color-primary-light: #cce5ff;

    --color-success: #28a745;
    --color-warning: #ffc107;
    --color-danger: #dc3545;
    --color-info: #17a2b8;

    /* Neutrals */
    --color-white: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f8f9fa;
    --color-gray-200: #e9ecef;
    --color-gray-300: #dee2e6;
    --color-gray-400: #ced4da;
    --color-gray-500: #adb5bd;
    --color-gray-600: #6c757d;
    --color-gray-700: #495057;
    --color-gray-800: #343a40;
    --color-gray-900: #212529;
    --color-black: #000000;

    /* Text colors */
    --color-text-primary: #333333;
    --color-text-secondary: #666666;
    --color-text-muted: #999999;
    --color-text-inverse: #ffffff;

    /* Background colors */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #fafafa;

    /* Border colors */
    --color-border: #e9ecef;
    --color-border-light: #f0f0f0;
    --color-border-dark: #dee2e6;

    /* ========================================
       Typography
       ======================================== */
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-family-heading: var(--font-family-base);
    --font-family-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

    /* Font sizes - fluid typography */
    --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8rem);
    --font-size-sm: clamp(0.85rem, 0.8rem + 0.25vw, 0.9rem);
    --font-size-base: clamp(0.95rem, 0.9rem + 0.25vw, 1rem);
    --font-size-md: clamp(1rem, 0.95rem + 0.25vw, 1.1rem);
    --font-size-lg: clamp(1.1rem, 1rem + 0.5vw, 1.25rem);
    --font-size-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
    --font-size-2xl: clamp(1.5rem, 1.25rem + 1vw, 2rem);
    --font-size-3xl: clamp(1.75rem, 1.5rem + 1.25vw, 2.5rem);

    /* Font weights */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Line heights */
    --line-height-tight: 1.25;
    --line-height-base: 1.5;
    --line-height-relaxed: 1.7;

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

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

    /* ========================================
       Shadows
       ======================================== */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-focus: 0 0 0 3px rgba(0, 115, 234, 0.25);

    /* ========================================
       Transitions
       ======================================== */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* ========================================
       Z-Index Scale
       ======================================== */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-tooltip: 600;

    /* ========================================
       Layout
       ======================================== */
    --container-max-width: 900px;
    --header-height: 60px;
    --footer-height: 80px;
    --mobile-nav-height: 60px;

    /* ========================================
       Progress Bar
       ======================================== */
    --progress-height: 6px;
    --progress-bg: var(--color-gray-200);
    --progress-fill: var(--color-primary);
}

/* ========================================
   Phase-specific CSS Custom Properties
   Applied via body class
   ======================================== */

body.phase-number-1 {
    --current-phase-color: var(--phase-1-color);
    --current-phase-light: var(--phase-1-light);
    --current-phase-dark: var(--phase-1-dark);
}

body.phase-number-2 {
    --current-phase-color: var(--phase-2-color);
    --current-phase-light: var(--phase-2-light);
    --current-phase-dark: var(--phase-2-dark);
}

body.phase-number-3 {
    --current-phase-color: var(--phase-3-color);
    --current-phase-light: var(--phase-3-light);
    --current-phase-dark: var(--phase-3-dark);
}

body.phase-number-4 {
    --current-phase-color: var(--phase-4-color);
    --current-phase-light: var(--phase-4-light);
    --current-phase-dark: var(--phase-4-dark);
}

body.phase-number-5 {
    --current-phase-color: var(--phase-5-color);
    --current-phase-light: var(--phase-5-light);
    --current-phase-dark: var(--phase-5-dark);
}

body.phase-number-6 {
    --current-phase-color: var(--phase-6-color);
    --current-phase-light: var(--phase-6-light);
    --current-phase-dark: var(--phase-6-dark);
}

/* ========================================
   Base Reset & Defaults
   ======================================== */

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

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text-primary);
    background-color: var(--color-bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Utility Classes
   ======================================== */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

/* Phase color utility classes */
.phase-1-bg { background-color: var(--phase-1-color); }
.phase-2-bg { background-color: var(--phase-2-color); }
.phase-3-bg { background-color: var(--phase-3-color); }
.phase-4-bg { background-color: var(--phase-4-color); }
.phase-5-bg { background-color: var(--phase-5-color); }
.phase-6-bg { background-color: var(--phase-6-color); }

.phase-1-text { color: var(--phase-1-color); }
.phase-2-text { color: var(--phase-2-color); }
.phase-3-text { color: var(--phase-3-color); }
.phase-4-text { color: var(--phase-4-color); }
.phase-5-text { color: var(--phase-5-color); }
.phase-6-text { color: var(--phase-6-color); }

/* ========================================
   Accessibility
   ======================================== */

.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: var(--z-tooltip);
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-2);
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.phase-1-border { border-color: var(--phase-1-color); }
.phase-2-border { border-color: var(--phase-2-color); }
.phase-3-border { border-color: var(--phase-3-color); }
.phase-4-border { border-color: var(--phase-4-color); }
.phase-5-border { border-color: var(--phase-5-color); }
.phase-6-border { border-color: var(--phase-6-color); }

/* ========================================
   Dark Mode
   ======================================== */

[data-theme="dark"] {
    --color-text-primary: #e0e0e0;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #707070;
    --color-text-inverse: #1a1a2e;

    --color-bg-primary: #1a1a2e;
    --color-bg-secondary: #16162a;
    --color-bg-tertiary: #1e1e3a;

    --color-white: #252540;
    --color-black: #ffffff;

    --color-gray-50: #1e1e3a;
    --color-gray-100: #252540;
    --color-gray-200: #3a3a5c;
    --color-gray-300: #4a4a6a;
    --color-gray-400: #6a6a8a;
    --color-gray-500: #8a8aa0;
    --color-gray-600: #a0a0b0;
    --color-gray-700: #c0c0d0;
    --color-gray-800: #d0d0e0;
    --color-gray-900: #e0e0f0;

    --color-border: #3a3a5c;
    --color-border-light: #2a2a4a;
    --color-border-dark: #4a4a6a;

    --color-primary-light: #1a3a5c;

    --phase-1-light: #1a3a2a;
    --phase-2-light: #1a2a4a;
    --phase-3-light: #2a1a4a;
    --phase-4-light: #3a2a1a;
    --phase-5-light: #3a1a2a;
    --phase-6-light: #1a3a3a;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-focus: 0 0 0 3px rgba(0, 115, 234, 0.4);

    color-scheme: dark;
}