/**
 * Główny plik stylów - Responsywny design zgodny z WCAG 2.2
 */

/* Reset i podstawowe style */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2c3e50;
    --primary-hover: #34495e;
    --secondary-color: #64748b;
    --text-color: #2c3e50;
    --text-light: #64748b;
    --bg-color: #ffffff;
    --bg-light: #f8fafc;
    --border-color: #e2e8f0;
    --error-color: #dc2626;
    --success-color: #16a34a;
    --focus-color: #3498db;
    --focus-outline: 3px solid var(--focus-color);
    --focus-outline-offset: 2px;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --max-width: 1200px;
    --spacing: 1rem;
    --border-radius: 0.5rem;
    --top-bar-bg: #2c3e50;
    --top-bar-text: #ffffff;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Skip link dla dostępności */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

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

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing);
    width: 100%;
}

/* Header Top - Top Bar */
.header-top {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-color);
}

.header-top-bar {
    background-color: var(--top-bar-bg);
    color: var(--top-bar-text);
    padding: 0.5rem 0;
    font-size: 0.875rem;
}

.header-top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.header-top-bar-area {
    display: flex;
    align-items: center;
}

.header-top-bar-area.area-left {
    flex: 1;
}

.header-top-bar-area.area-right {
    margin-left: auto;
}

.top-bar-text {
    color: #ffffff;
}

.top-bar-social-icons {
    display: flex;
    gap: 0.75rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: #ffffff;
    text-decoration: none;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    transition: background-color 0.2s;
    font-weight: bold;
    font-size: 1.1rem;
}

.social-icon:hover,
.social-icon:focus {
    background-color: rgba(255, 255, 255, 0.2);
    outline: none;
}

.social-icon:focus {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
}

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

/* Navigation Bar */
.navigation-bar {
    background-color: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.navigation-wrapper {
    padding: 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    flex-wrap: wrap;
}

.logo-col {
    flex-shrink: 0;
}

.logo-link {
    display: inline-block;
    text-decoration: none;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.logo-link:focus {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
    border-radius: 4px;
}

.main-menu-col {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    gap: 4px;
    min-width: 44px;
    min-height: 44px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    transition: all 0.3s;
    display: block;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.menu-toggle:focus {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-menu > .menu-item {
    position: relative;
}

.nav-menu > .menu-item > a {
    display: block;
    padding: 1rem 1.25rem;
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.2s, background-color 0.2s;
    font-weight: 500;
}

.nav-menu > .menu-item > a:hover,
.nav-menu > .menu-item > a:focus {
    color: var(--primary-color);
    background-color: var(--bg-light);
    outline: none;
}

.nav-menu > .menu-item > a:focus {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
    border-radius: 4px;
}

/* Dropdown Menu */
.menu-item-has-children > a::after {
    content: " ▼";
    font-size: 0.7em;
    margin-left: 0.25rem;
}

.sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    list-style: none;
    margin: 0;
    padding: 0.5rem 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
    z-index: 1000;
}

.menu-item-has-children:hover .sub-menu,
.menu-item-has-children:focus-within .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.sub-menu .menu-item {
    margin: 0;
}

.sub-menu a {
    display: block;
    padding: 0.75rem 1.25rem;
    color: var(--text-color);
    text-decoration: none;
    transition: background-color 0.2s;
}

.sub-menu a:hover,
.sub-menu a:focus {
    background-color: var(--bg-light);
    color: var(--primary-color);
    outline: none;
}

.sub-menu a:focus {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
    border-radius: 4px;
}

/* Main content */
main {
    flex: 1;
    padding: 2rem 0;
}

/* Hero section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero .lead {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* Sections */
.content-section,
.blog-section,
.page-content,
.post-content {
    padding: 2rem 0;
}

/* Posts grid */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.post-card,
.post-item {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: transform 0.2s, box-shadow 0.2s;
}

.post-card:hover,
.post-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.post-card h3,
.post-item h2 {
    margin-bottom: 0.5rem;
}

.post-card a,
.post-item a {
    color: var(--text-color);
    text-decoration: none;
}

.post-card a:hover,
.post-card a:focus,
.post-item a:hover,
.post-item a:focus {
    color: var(--primary-color);
    outline: none;
}

.post-card a:focus,
.post-item a:focus {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
    border-radius: 4px;
}

.post-card time,
.post-item time {
    display: block;
    color: var(--text-light);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.read-more {
    display: inline-block;
    margin-top: 1rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.read-more:hover,
.read-more:focus {
    text-decoration: underline;
    outline: none;
}

.read-more:focus {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
    border-radius: 4px;
}

/* Posts list */
.posts-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 2rem;
}

.post-item header {
    margin-bottom: 1rem;
}

/* Buttons */
.button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    font-family: inherit;
    transition: background-color 0.2s;
    text-align: center;
}

.button:hover {
    background-color: var(--primary-hover);
}

.button:focus {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
}

.button-primary {
    background-color: var(--primary-color);
}

.button-primary:hover {
    background-color: var(--primary-hover);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
    border-color: var(--focus-color);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid var(--success-color);
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid var(--error-color);
}

.alert ul {
    margin-left: 1.5rem;
    margin-top: 0.5rem;
}

/* Admin styles */
.admin-dashboard,
.admin-section {
    padding: 2rem 0;
}

.admin-nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.admin-nav a {
    padding: 0.75rem 1.5rem;
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--text-color);
    display: inline-block;
}

.admin-nav a:hover,
.admin-nav a:focus {
    background-color: var(--primary-color);
    color: white;
    outline: none;
}

.admin-nav a:focus {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
    background: white;
}

.admin-table th,
.admin-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.admin-table th {
    background-color: var(--bg-light);
    font-weight: 600;
}

.admin-table a {
    color: var(--primary-color);
    text-decoration: none;
    margin-right: 1rem;
}

.admin-table a:hover,
.admin-table a:focus {
    text-decoration: underline;
    outline: none;
}

.admin-table a:focus {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
    border-radius: 4px;
}

.admin-form {
    max-width: 800px;
    margin-top: 2rem;
}

/* Login section */
.login-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

.login-form-wrapper {
    max-width: 400px;
    width: 100%;
    background: var(--bg-light);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.login-form-wrapper h1 {
    margin-bottom: 1.5rem;
    text-align: center;
}

/* Footer */
footer[role="contentinfo"] {
    background-color: var(--bg-light);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: auto;
}

footer nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
}

footer nav a {
    color: var(--text-color);
    text-decoration: none;
}

footer nav a:hover,
footer nav a:focus {
    color: var(--primary-color);
    outline: none;
}

footer nav a:focus {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
    border-radius: 4px;
}

/* Error section */
.error-section {
    text-align: center;
    padding: 4rem 0;
}

.error-section h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--error-color);
}

/* Responsive design */
@media (max-width: 768px) {
    .header-top-bar-inner {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .header-top-bar-area.area-right {
        margin-left: 0;
        justify-content: center;
    }
    
    .top-bar-text {
        font-size: 0.8rem;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .main-menu-col {
        position: relative;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-color);
        flex-direction: column;
        padding: 0;
        border-top: 1px solid var(--border-color);
        display: none;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        z-index: 1000;
    }
    
    .nav-menu[aria-expanded="true"] {
        display: flex;
    }
    
    .nav-menu > .menu-item {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-menu > .menu-item > a {
        padding: 1rem 1.25rem;
        width: 100%;
    }
    
    .menu-item-has-children > a::after {
        float: right;
    }
    
    .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        border-top: 1px solid var(--border-color);
        background-color: var(--bg-light);
        display: none;
        margin-left: 1rem;
    }
    
    .menu-item-has-children:hover .sub-menu,
    .menu-item-has-children:focus-within .sub-menu,
    .menu-item-has-children[aria-expanded="true"] .sub-menu {
        display: block;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero .lead {
        font-size: 1rem;
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .admin-table {
        font-size: 0.875rem;
    }
    
    .admin-table th,
    .admin-table td {
        padding: 0.5rem;
    }
    
    footer nav ul {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero {
        padding: 2rem 0;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .login-form-wrapper {
        padding: 1.5rem;
    }
}