/**
 * BIP Static - Main Styles
 * Minimalistyczny, responsywny, WCAG 2.2 compliant
 */

/* ===== CSS Variables ===== */
:root {
    /* Colors - WCAG AA compliant contrast */
    --color-primary: #1a4480;
    --color-primary-dark: #0f2d5a;
    --color-secondary: #2e8540;
    --color-text: #1b1b1b;
    --color-text-light: #595959;
    --color-bg: #ffffff;
    --color-bg-alt: #f5f5f5;
    --color-bg-dark: #e8e8e8;
    --color-link: #0066cc;
    --color-link-hover: #004999;
    --color-link-visited: #0066cc;
    --color-focus: #005fcc;
    --color-border: #d0d0d0;
    --color-error: #d4351c;
    --color-success: #2e8540;
    
    /* Typography */
    --font-base: system-ui, -apple-system, 'Segoe UI', 'Noto Sans', 'Liberation Sans', Arial, sans-serif;
    --font-size-base: 16px;
    --font-scale: 1;
    --line-height-base: 1.6;
    --line-height-heading: 1.3;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Layout */
    --max-width: 1200px;
    --sidebar-width: 280px;
    --header-height: auto;
    
    /* Border radius */
    --radius-sm: 3px;
    --radius-md: 5px;
    --radius-lg: 8px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
}

/* ===== Base Styles ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: calc(var(--font-size-base) * var(--font-scale));
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-base);
    font-size: 1rem;
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Focus styles - WCAG 2.4.7 */
:focus:not(:focus-visible) {
    outline: none;
}

:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;
    box-shadow: 0 0 0 2px #fff;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    scroll-margin-top: 5rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--spacing-md);
    font-weight: 600;
    line-height: var(--line-height-heading);
    color: var(--color-primary-dark);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p {
    margin: 0 0 var(--spacing-md);
}

/* Links - WCAG 1.4.1, 2.4.4 */
a {
    color: var(--color-link);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-link-hover);
}

a:visited {
    color: var(--color-link-visited);
}

/* Lists */
ul, ol {
    margin: 0 0 var(--spacing-md);
    padding-left: var(--spacing-xl);
}

li {
    margin-bottom: var(--spacing-xs);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0 var(--spacing-lg);
    font-size: 0.95rem;
    table-layout: fixed;
}

th, td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border: 1px solid var(--color-border);
}

th {
    background-color: var(--color-bg-alt);
    font-weight: 600;
}

tr:nth-child(even) {
    background-color: var(--color-bg-alt);
}

/* ===== Skip Links ===== */
.skip-link {
    position: absolute;
    top: -50px;
    left: 0;
    background: var(--color-focus);
    color: #fff;
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 1000;
    text-decoration: none;
    font-weight: 600;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

.skip-link:focus {
    top: 0;
}

/* ===== Header ===== */
.header {
    background: var(--color-primary);
    color: #fff;
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.header-logos {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-bip img {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.header-title {
    display: flex;
    flex-direction: column;
}

.site-name {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.site-name a {
    color: #fff;
    text-decoration: none;
}

.school-name {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.9;
}

.header-links {
    display: flex;
    gap: var(--spacing-md);
}

.school-link {
    color: #fff;
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid rgba(255,255,255,0.5);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.school-link:visited {
    color: #fff;
}

.school-link:hover {
    background: rgba(255,255,255,0.1);
    border-color: #fff;
    color: #fff;
}

/* ===== Accessibility Bar ===== */
.accessibility-bar {
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm) var(--spacing-lg);
}

.accessibility-bar-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.accessibility-group {
    display: flex;
    gap: var(--spacing-xs);
}

.accessibility-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: #fff;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    color: var(--color-text);
    line-height: 1.2;
}

.accessibility-btn:hover,
.accessibility-btn:focus {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.accessibility-btn.active {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: #fff;
}

.accessibility-separator {
    color: var(--color-border);
    margin: 0 var(--spacing-xs);
}

.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;
}

/* ===== Main Layout ===== */
.layout {
    flex: 1;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-lg);
    box-sizing: border-box;
    display: grid;
    grid-template-columns: minmax(260px, var(--sidebar-width)) minmax(0, 1fr);
    gap: var(--spacing-xl);
    align-items: start;
}

/* ===== Sidebar Menu ===== */
.sidebar {
    position: sticky;
    top: var(--spacing-md);
    align-self: start;
    width: 100%;
    min-width: 0;
}

.menu-section {
    margin-bottom: var(--spacing-lg);
}

.menu-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    margin: 0 0 var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

.menu-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.menu-item {
    margin: 0;
}

.menu-item a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text);
    text-decoration: none;
    border-left: 3px solid transparent;
    transition: all var(--transition-fast);
    min-height: 44px;
    display: flex;
    align-items: center;
}

.menu-item a:hover {
    background: var(--color-bg-alt);
    border-left-color: var(--color-primary);
    color: var(--color-primary);
}

.menu-item.active a {
    background: var(--color-bg-alt);
    border-left-color: var(--color-primary);
    font-weight: 600;
    color: var(--color-primary);
}

/* Menu Groups */
.menu-group {
    margin: var(--spacing-sm) 0;
}

.menu-group-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    padding: var(--spacing-sm) var(--spacing-md);
    margin: 0;
    background: var(--color-bg-alt);
    border-radius: var(--radius-sm);
}

.menu-group-list {
    list-style: none;
    margin: var(--spacing-xs) 0 0;
    padding: 0;
}

.menu-subitem {
    margin: 0;
}

.menu-subitem a {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-left: calc(var(--spacing-md) + 1rem);
    color: var(--color-text);
    text-decoration: none;
    border-left: 3px solid transparent;
    transition: all var(--transition-fast);
    min-height: 44px;
    justify-content: center;
}

.menu-subitem a:hover {
    background: var(--color-bg-alt);
    border-left-color: var(--color-primary);
    color: var(--color-primary);
}

.menu-subitem.active a {
    background: var(--color-bg-alt);
    border-left-color: var(--color-primary);
    font-weight: 600;
    color: var(--color-primary);
}

.menu-item-title {
    font-weight: 500;
    line-height: 1.3;
}

.menu-item-description {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.4;
    margin-top: var(--spacing-xs);
}

/* ===== Main Content ===== */
.main-content {
    min-width: 0;
    width: 100%;
    max-width: none;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    width: 100%;
    box-sizing: border-box;
}

.breadcrumb-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item:not(:last-child)::after {
    content: '›';
    margin-left: var(--spacing-sm);
    color: var(--color-text-light);
}

.breadcrumb-item a {
    color: var(--color-text-light);
    text-decoration: none;
}

.breadcrumb-item a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.breadcrumb-item.active span {
    color: var(--color-text);
    font-weight: 500;
}

/* ===== Content ===== */
.content {
    background: #fff;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
    overflow-wrap: anywhere;
}

.content > * {
    max-width: 100%;
}

.content p,
.content li,
.content td,
.content th,
.content a {
    overflow-wrap: anywhere;
}

.content p + ul,
.content p + ol {
    margin-top: calc(var(--spacing-md) * -0.5);
}

.content h1 {
    margin-top: 0;
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

.content img {
    max-width: 100%;
    height: auto;
}

.content iframe,
.content embed,
.content object {
    max-width: 100%;
}

.content hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--spacing-xl) 0;
}

.category-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.category-list-item {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.category-list-item:last-child {
    margin-bottom: 0;
    border-bottom: 0;
    padding-bottom: 0;
}

.category-list-item a {
    display: inline-block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.category-list-description {
    margin: 0;
    color: var(--color-text-light);
}

/* File links */
.file-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-fast);
    max-width: 100%;
    white-space: normal;
    min-height: 44px;
}

.file-link:hover {
    background: var(--color-primary);
    color: #fff;
}

/* Metryczka */
.content table:last-of-type {
    margin-top: var(--spacing-xl);
    background: var(--color-bg-alt);
}

.document-meta {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    width: 100%;
    box-sizing: border-box;
}

.document-meta table {
    margin-bottom: 0;
}

.document-meta th {
    width: 34%;
    background-color: transparent;
}

.document-meta tr:nth-child(even) {
    background-color: var(--color-bg-alt);
}

/* ===== Footer ===== */
.footer {
    background: var(--color-primary-dark);
    color: #fff;
    margin-top: auto;
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.footer-main {
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(220px, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer h3 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.footer p,
.footer li {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
}

.footer address {
    font-style: normal;
    opacity: 0.9;
}

.footer a {
    color: #fff;
    opacity: 0.9;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
}

.footer a:hover {
    opacity: 1;
    text-decoration: none;
}

.footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links {
    justify-self: stretch;
    text-align: left;
}

.footer-links li {
    margin-bottom: 0;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255,255,255,0.2);
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.8;
}

.last-updated {
    margin-top: var(--spacing-sm);
}

/* ===== Responsive Design ===== */
@media (max-width: 900px) {
    .layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
        order: 2;
    }
    
    .main-content {
        order: 1;
    }
    
    .menu-section {
        margin-bottom: var(--spacing-md);
    }
}

@media (max-width: 600px) {
    .header-inner {
        flex-direction: column;
        text-align: center;
    }
    
    .header-logos {
        flex-direction: column;
    }
    
    .layout {
        padding: var(--spacing-md);
    }

    .content {
        padding: var(--spacing-md);
    }
    
    .accessibility-bar-inner {
        gap: var(--spacing-xs);
    }
    
    .accessibility-separator {
        display: none;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links {
        justify-self: stretch;
        text-align: center;
    }
}

/* ===== Print Styles ===== */
@media print {
    .header,
    .accessibility-bar,
    .sidebar,
    .footer {
        display: none;
    }
    
    .layout {
        display: block;
        padding: 0;
    }
    
    .content {
        box-shadow: none;
        padding: 0;
    }
    
    a {
        color: inherit;
        text-decoration: underline;
    }
    
    a[href]::after {
        content: ' (' attr(href) ')';
        font-size: 0.8em;
    }
}