/**
 * Catanzaro Tourism Theme - CSS Reset & Base Styles
 * 
 * PURPOSE: This file provides a modern CSS reset and base styles that normalize
 * browser defaults and establish consistent foundation styles across all browsers.
 * 
 * STRUCTURE:
 * - CSS reset (normalize browser inconsistencies)
 * - Base element styles (html, body, headings, etc.)
 * - Typography defaults (font families, sizes, line heights)
 * - Form element normalization
 * - Accessibility improvements
 * - Print styles
 * 
 * USAGE:
 * - Load this file first in the cascade
 * - Provides consistent base for all other styles
 * - Establishes typography scale and spacing
 * - Ensures cross-browser compatibility
 * 
 * UPDATE PROCEDURES:
 * - MEDIUM IMPACT: Changes affect all elements globally
 * - Test across different browsers after changes
 * - Maintain accessibility standards
 * - Consider existing content when modifying defaults
 * 
 * DEPENDENCIES:
 * - Requires: variables.css (for design system values)
 * - Used by: All other CSS files
 * 
 * @package TurismoCatanzaro
 * @version 1.0.0
 */

/* ==========================================================================
   CSS Reset - Normalize browser inconsistencies
   ========================================================================== */

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

/* Remove default margin and padding */
* {
    margin: 0;
    padding: 0;
}

/* Remove list styles on ul, ol elements */
ul,
ol {
    list-style: none;
}

/* Set core root defaults */
html:focus-within {
    scroll-behavior: smooth;
}

/* Set core body defaults */
body {
    min-height: 100vh;
    text-rendering: optimizeSpeed;
    line-height: var(--tourism-leading-normal);
    font-family: var(--tourism-font-family-sans);
    font-size: var(--tourism-text-base);
    color: var(--tourism-gray-800);
    background-color: var(--tourism-white);
}

/* A elements that don't have a class get default styles */
a:not([class]) {
    text-decoration-skip-ink: auto;
}

/* Make images easier to work with */
img,
picture {
    max-width: 100%;
    display: block;
}

/* Inherit fonts for inputs and buttons */
input,
button,
textarea,
select {
    font: inherit;
}

/* Remove all animations, transitions and smooth scroll for people that prefer not to see them */
@media (prefers-reduced-motion: reduce) {
    html:focus-within {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ==========================================================================
   Base Element Styles
   ========================================================================== */

/* HTML element */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

/* Body element */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Heading elements */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--tourism-font-bold);
    line-height: var(--tourism-leading-tight);
    color: var(--tourism-gray-900);
    margin-bottom: var(--tourism-space-4);
}

h1 {
    font-size: var(--tourism-text-4xl);
}

h2 {
    font-size: var(--tourism-text-3xl);
}

h3 {
    font-size: var(--tourism-text-2xl);
}

h4 {
    font-size: var(--tourism-text-xl);
}

h5 {
    font-size: var(--tourism-text-lg);
}

h6 {
    font-size: var(--tourism-text-base);
}

/* Paragraph elements */
p {
    margin-bottom: var(--tourism-space-4);
    line-height: var(--tourism-leading-relaxed);
}

/* Link elements */
a {
    color: var(--tourism-primary);
    text-decoration: none;
    transition: color var(--tourism-transition-fast) var(--tourism-ease-in-out);
}

a:hover {
    color: var(--tourism-primary-dark);
    text-decoration: underline;
}

/* ==========================================================================
   Form Element Normalization
   ========================================================================== */

/* Button elements */
button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* Input elements */
input,
textarea,
select {
    border: 1px solid var(--tourism-gray-300);
    border-radius: var(--tourism-border-radius);
    padding: var(--tourism-space-2) var(--tourism-space-3);
    font-size: var(--tourism-text-base);
    transition: border-color var(--tourism-transition-fast) var(--tourism-ease-in-out);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--tourism-primary);
    box-shadow: 0 0 0 3px rgba(31, 59, 135, 0.1);
}

/* ==========================================================================
   Accessible Focus Management
   ========================================================================== */

/* Remove default outlines only when we provide custom focus styles */
input,
textarea,
select,
button,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="date"],
input[type="datetime-local"],
input[type="month"],
input[type="time"],
input[type="week"],
input[type="checkbox"],
input[type="radio"],
input[type="file"],
input[type="submit"],
input[type="reset"],
input[type="button"] {
    outline: none;
}

/* Remove outlines from elements that will have custom focus styles */
a,
button,
[tabindex]:not([tabindex="-1"]),
[role="button"],
[role="link"] {
    outline: none;
}

/* Browser-specific normalization (safe) */
input::-moz-focus-inner,
button::-moz-focus-inner {
    border: 0;
    padding: 0;
}

/* Webkit specific normalization */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    margin: 0;
}

/* Autofill styling normalization */
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active {
    -webkit-box-shadow: none;
    box-shadow: none;
}

/* Custom focus styles for accessibility - Now safe! */
input:focus,
textarea:focus,
select:focus,
button:focus {
    border-color: var(--tourism-primary);
    box-shadow: 0 0 0 2px rgba(31, 59, 135, 0.2);
    position: relative;
    z-index: 1;
}

/* Special handling for checkboxes and radio buttons */
input[type="checkbox"],
input[type="radio"] {
    border: 1px solid var(--tourism-gray-300);
}

input[type="checkbox"]:focus,
input[type="radio"]:focus {
    border-color: var(--tourism-primary);
    box-shadow: 0 0 0 2px rgba(31, 59, 135, 0.2);
    position: relative;
    z-index: 1;
}

/* Prevent any focus-related layout shifts */
input,
textarea,
select,
button {
    box-sizing: border-box;
}

input:focus,
textarea:focus,
select:focus,
button:focus {
    transform: none;
    margin: 0;
    box-sizing: border-box;
}

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

/* Screen reader only text */
.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;
}

/* Screen-reader utilities */
.screen-reader-text {
    border: 0 !important;
    clip: rect(1px, 1px, 1px, 1px) !important;
    clip-path: inset(50%) !important;
    height: 1px !important;
    margin: -1px !important;
    overflow: hidden !important;
    padding: 0 !important;
    position: absolute !important;
    width: 1px !important;
    word-wrap: normal !important;
}

.screen-reader-text:focus,
.skip-link:focus,
.skip-link:focus-visible {
    clip: auto !important;
    clip-path: none !important;
    height: auto !important;
    width: auto !important;
    display: inline-block !important;
    padding: 8px 12px !important;
    background: #000 !important;
    color: #fff !important;
    z-index: 10000 !important;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.85) !important;
    transform: none !important;
    top: 8px !important;
    left: 8px !important;
    overflow: visible !important;
}

/* Skip link default hidden, visible on focus */
.skip-link {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    transform: translateY(-120%);
}

.skip-links-container {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    z-index: 10000;
}

.skip-links-container:focus-within {
    top: 0 !important;
    transform: none !important;
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    * {
        background: transparent !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }

    a,
    a:visited {
        text-decoration: underline;
    }

    a[href]:after {
        content: " (" attr(href) ")";
    }

    abbr[title]:after {
        content: " (" attr(title) ")";
    }

    pre,
    blockquote {
        border: 1px solid #999;
        page-break-inside: avoid;
    }

    thead {
        display: table-header-group;
    }

    tr,
    img {
        page-break-inside: avoid;
    }

    img {
        max-width: 100% !important;
    }

    p,
    h2,
    h3 {
        orphans: 3;
        widows: 3;
    }

    h2,
    h3 {
        page-break-after: avoid;
    }
}

/* ==========================================================================
   Browser-Specific Tap Highlight Management
   ========================================================================== */

/* Only remove tap highlights for touch devices, preserve focus for keyboard */
* {
    -webkit-tap-highlight-color: transparent;
}

/* ==========================================================================
   A11y: Comprehensive Focus Management
   ========================================================================== */

:root {
    --a11y-focus-ring: 0 0 0 3px rgba(31, 59, 135, 0.25), 0 0 0 1px var(--tourism-primary);
    --a11y-focus-ring-offset: 2px;
}

/* Modern browsers with :focus-visible support */
a[href]:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[role="button"]:focus-visible,
[role="link"]:focus-visible,
[tabindex]:not([tabindex="-1"]):focus-visible {
    outline: 2px solid var(--tourism-primary);
    outline-offset: var(--a11y-focus-ring-offset);
    box-shadow: var(--a11y-focus-ring);
    position: relative;
    z-index: 2;
}

/* Fallback for older browsers or when :focus-visible isn't supported */
a[href]:focus,
button:focus,
[role="button"]:focus,
[role="link"]:focus,
[tabindex]:not([tabindex="-1"]):focus {
    outline: 2px solid var(--tourism-primary);
    outline-offset: var(--a11y-focus-ring-offset);
    position: relative;
    z-index: 2;
}

/* Hide focus for mouse users in modern browsers */
a[href]:focus:not(:focus-visible),
button:focus:not(:focus-visible),
[role="button"]:focus:not(:focus-visible),
[role="link"]:focus:not(:focus-visible),
[tabindex]:not([tabindex="-1"]):focus:not(:focus-visible) {
    outline: none;
    box-shadow: none;
}