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

:root {
    /* Kolorystyka zgodna z wytycznymi */
    --primary-green: #16A34A;
    --primary-navy: #0F172A;
    --accent-blue: #0EA5E9;
    --light-green: #F0FDF4;
    --neutral-bg: #FFFFFF;
    --text-dark: #1E293B;
    --text-gray: #64748B;
    --earth-brown: #92400E;
    --warning-yellow: #FEF3C7;
    
    /* Typografia */
    --font-primary: 'Inter', 'Segoe UI', Roboto, Ubuntu, Cantarell, 'Noto Sans', Arial, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Rozmiary */
    --max-width: 1200px;
    --header-height: 80px;
    --section-padding: 60px 0;
    --border-radius: 8px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--neutral-bg);
}

/* Typografia */
h1 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-navy);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

h2 {
    font-size: 2rem;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-navy);
    margin-bottom: 1.25rem;
}

h3 {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-green);
    margin-bottom: 1rem;
}

h4 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-medium);
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-gray);
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Layout ogólny */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    background-color: var(--neutral-bg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    min-height: var(--header-height);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--header-height);
    flex-wrap: wrap;
}

.logo {
    height: 60px;
    width: auto;
}

.logo:hover {
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

/* Nawigacja */
.nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
}

.nav-item a {
    font-weight: var(--font-weight-medium);
    color: var(--text-dark);
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.3s ease, color 0.3s ease;
}

.nav-item a:hover,
.nav-item a.active {
    color: var(--primary-green);
    border-bottom-color: var(--primary-green);
}

/* Menu mobilne */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
    padding: 0.5rem;
}

/* Main content */
.main {
    min-height: calc(100vh - var(--header-height) - 200px);
}

/* Hero sekcja */
.hero {
    background: linear-gradient(135deg, var(--light-green) 0%, var(--neutral-bg) 100%);
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero .subtitle {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    background-color: var(--primary-green);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.cta-button:hover {
    background-color: #15803D;
    transform: translateY(-2px);
    color: white;
}

/* Sekcje */
.section {
    padding: var(--section-padding);
}

.section-alt {
    background-color: var(--light-green);
}

/* Siatka */
.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Karty */
.card {
    background-color: var(--neutral-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.card h3 {
    color: var(--primary-green);
    margin-bottom: 1rem;
}

/* Informacje organizacyjne */
.event-info {
    background-color: var(--warning-yellow);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--earth-brown);
    margin: 2rem 0;
}

.event-info h3 {
    color: var(--earth-brown);
    margin-bottom: 0.5rem;
}

/* Listy */
.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-green);
    font-weight: bold;
}

/* Tabele */
.table-container {
    overflow-x: auto;
    margin: 2rem 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--neutral-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #E2E8F0;
}

th {
    background-color: var(--primary-green);
    color: white;
    font-weight: var(--font-weight-semibold);
}

tr:hover {
    background-color: var(--light-green);
}

/* Formularz */
.form {
    background-color: var(--neutral-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    max-width: 600px;
    margin: 2rem auto;
}

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: var(--font-weight-medium);
    color: var(--text-dark);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #E2E8F0;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-green);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-button {
    background-color: var(--primary-green);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.form-button:hover {
    background-color: #15803D;
}

/* Sponsorzy */
.sponsors {
    text-align: center;
    padding: 3rem 0;
    background-color: var(--light-green);
}

.sponsor-logo {
    height: 80px;
    width: auto;
    margin: 1rem;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.sponsor-logo:hover {
    opacity: 1;
}

/* Footer */
.footer {
    background-color: var(--primary-navy);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--primary-green);
    margin-bottom: 1rem;
}

.footer-section p,
.footer-section a {
    color: #CBD5E1;
}

.footer-section a:hover {
    color: var(--primary-green);
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 1rem;
    text-align: center;
    color: #94A3B8;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-list {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--neutral-bg);
        box-shadow: var(--shadow);
        flex-direction: column;
        padding: 1rem;
        gap: 1rem;
    }
    
    .nav-list.active {
        display: flex;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero .subtitle {
        font-size: 1rem;
    }
    
    .header-content {
        padding: 1rem 0;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .form {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.5rem;
    }
    
    .hero {
        padding: 2rem 0;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .grid {
        gap: 1rem;
    }
    
    .card {
        padding: 1rem;
    }
}

/* Animacje */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

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

/* Focus styles for accessibility */
button:focus,
input:focus,
select:focus,
textarea:focus,
a:focus {
    outline: 2px solid var(--primary-green);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .header,
    .footer,
    .mobile-menu-toggle {
        display: none;
    }
    
    .main {
        margin: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}