/* CSS Reset - Modern normalize + custom additions */

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

* {
    margin: 0;
    padding: 0;
}

html {
    /* Improve text rendering */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    
    /* Prevent adjustments of font size after orientation changes */
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    
    /* Smooth scrolling */
    scroll-behavior: smooth;
}

body {
    line-height: 1.5;
    font-family: var(--font-family-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color var(--duration-emphasized) var(--easing-smooth),
                color var(--duration-emphasized) var(--easing-smooth);
    overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
    height: auto;
}

input,
button,
textarea,
select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

button:disabled {
    cursor: not-allowed;
}

input {
    border: none;
    outline: none;
    background: none;
}

a {
    color: inherit;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

/* Remove default button styles */
button {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

/* Remove default input styles */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] {
    appearance: textfield;
    -moz-appearance: textfield;
}

/* Focus styles for accessibility */
:focus-visible {
    outline: 3px solid var(--accent-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --shadow-subtle: 0 2px 4px rgba(0, 0, 0, 0.3);
        --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.4);
        --shadow-elevated: 0 8px 16px rgba(0, 0, 0, 0.5);
    }
}

/* Print styles */
@media print {
    *,
    *::before,
    *::after {
        background: transparent !important;
        color: #000 !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
    
    .settings,
    .modal,
    .btn {
        display: none !important;
    }
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    box-shadow: var(--shadow-medium);
    z-index: 1000;
    transition: top var(--duration-standard) var(--easing-default);
}

.skip-link:focus {
    top: 6px;
}

/* Screen reader only content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Hidden content that can be focused */
.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    padding: 0;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
}