/* CSS Custom Properties for consistent theming */
:root {
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    --color-text-primary: #1a202c;
    --color-text-secondary: #4a5568;
    --color-text-muted: #718096;
    --color-border: #e2e8f0;
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f7fafc;
    --transition-base: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Enhanced CSS Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Improved body typography */
body {
    font-family: var(--font-primary);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    font-weight: 400;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
}

/* Enhanced typography hierarchy */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.025em;
    margin-bottom: 0.5em;
}

h1 {
    font-size: 2.25rem;
    font-weight: 700;
}

h2 {
    font-size: 1.875rem;
    font-weight: 600;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

h4 {
    font-size: 1.25rem;
    font-weight: 500;
}

h5 {
    font-size: 1.125rem;
    font-weight: 500;
}

h6 {
    font-size: 1rem;
    font-weight: 500;
}

/* Enhanced paragraph typography */
p {
    margin-bottom: 1em;
    line-height: 1.7;
    font-weight: 400;
}

/* Enhanced link styles */
a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition-base);
}

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

/* Code and monospace elements */
code, pre, kbd, samp {
    font-family: var(--font-mono);
    font-size: 0.875em;
}

/* Override Bootstrap defaults for minimal design */
.form-control {
    font-family: var(--font-primary);
    font-weight: 400;
    border-radius: 4px;
    border: 1px solid var(--color-border);
    transition: var(--transition-base);
}

    .form-control:focus {
        border-color: var(--color-text-secondary);
        box-shadow: 0 0 0 3px rgba(74, 85, 104, 0.1);
        outline: none;
    }

.btn {
    font-family: var(--font-primary);
    font-weight: 500;
    border-radius: 4px;
    transition: var(--transition-base);
    border: none;
}

    .btn:focus {
        box-shadow: 0 0 0 3px rgba(74, 85, 104, 0.2);
        outline: none;
    }

/* Enhanced scrollbar for WebKit browsers */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
    transition: var(--transition-base);
}

    ::-webkit-scrollbar-thumb:hover {
        background: var(--color-text-muted);
    }

/* Enhanced selection colors */
::selection {
    background: rgba(74, 85, 104, 0.2);
    color: var(--color-text-primary);
}

::-moz-selection {
    background: rgba(74, 85, 104, 0.2);
    color: var(--color-text-primary);
}

/* Focus management for accessibility */
.focus-visible {
    outline: 2px solid #4299e1;
    outline-offset: 2px;
}

/* Remove outline for mouse users */
.js-focus-visible :focus:not(.focus-visible) {
    outline: none;
}

/* Enhanced form elements */
input, textarea, select {
    font-family: var(--font-primary);
}

/* Print styles */
@media print {
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }

    .minimal-container {
        box-shadow: none;
        border: 1px solid #000;
    }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --color-text-primary: #000;
        --color-text-secondary: #333;
        --color-border: #666;
    }
}

/* Dark mode preferences (for future implementation) */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg-primary: #1a202c;
        --color-bg-secondary: #2d3748;
        --color-text-primary: #f7fafc;
        --color-text-secondary: #e2e8f0;
        --color-border: #4a5568;
    }
}