/* Zmienne CSS dla łatwej zmiany kolorów/czcionek */
:root {
    --color-primary: #3b82f6; /* Niebieski - główny kolor */
    --color-secondary: #10b981; /* Zielony - akcent */
    --color-background: #0f172a; /* Ciemny - tło */
    --color-text-light: #f1f5f9; /* Jasny - główny tekst */
    --color-text-muted: #94a3b8; /* Szary - mniejszy tekst */
    --color-card-background: #1e293b; /* Tło kart */
    --font-family-header: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-family-body: 'Arial', sans-serif;
    --spacing-large: 3rem;
    --spacing-medium: 2rem;
    --spacing-small: 1rem;
}

/* Reset i Ustawienia Ogólne */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family-body);
    background-color: var(--color-background);
    color: var(--color-text-light);
    line-height: 1.6;
    scroll-behavior: smooth;
    overflow-x: hidden; /* Zapobiega poziomemu scrollowaniu */
}

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

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

ul {
    list-style: none;
}

h1, h2, h3 {
    font-family: var(--font-family-header);
    margin-bottom: var(--spacing-small);
    color: var(--color-text-light);
}

h2 {
    font-size: 2.5rem;
    border-bottom: 2px solid var(--color-secondary);
    display: inline-block;
    padding-bottom: 0.5rem;
    margin-bottom: var(--spacing-medium);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-small);
}

.section-padding {
    padding: var(--spacing-large) 0;
}

.background-alt {
    background-color: var(--color-card-background);
}

/* --- Nagłówek i Nawigacja --- */
#main-header {
    background: var(--color-card-background);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}

#main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-small) 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--color-secondary);
}

#main-header nav ul {
    display: flex;
    gap: var(--spacing-medium);
}

#main-header nav a {
    color: var(--color-text-light);
    font-weight: 500;
    font-size: 1.1rem;
    position: relative;
    padding-bottom: 5px;
}

/* Efekt podkreślenia dla menu */
#main-header nav a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    left: 0;
    bottom: 0;
    transition: width 0.3s ease;
}

#main-header nav a:hover:after {
    width: 100%;
}

.menu-toggle {
    display: none; /* Ukryty na desktopie */
    cursor: pointer;
    font-size: 1.5rem;
}

/* --- Sekcja Hero --- */
.hero-section {
    padding: 8rem 0; /* Większy padding dla efektu "wow" */
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-background) 0%, #171d2b 100%);
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-large);
}

.hero-text {
    max-width: 600px;
}

.intro-text {
    color: var(--color-secondary);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.name {
    font-size: 4rem;
    margin-bottom: 0.5rem;
    line-height: 1.1;
}

.role {
    font-size: 2.5rem;
    color: var(--color-primary);
    font-weight: 300;
    margin-bottom: var(--spacing-medium);
    height: 40px; /* Utrzymuje miejsce dla efektu pisania */
}

.description {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-medium);
}

.profile-photo {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: 50%;
    border: 5px solid var(--color-primary);
    box-shadow: 0 0 40px rgba(59, 130, 246, 0.4); /* Efekt poświaty */
    transition: transform 0.3s ease;
}

.profile-photo:hover {
    transform: scale(1.05);
}

.cta-button {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-text-light);
    padding: 0.75rem 2rem;
    border-radius: 8px;
    font-weight: bold;
    letter-spacing: 1px;
    transition: background 0.3s ease, transform 0.2s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.cta-button:hover {
    background: var(--color-secondary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
}

/* --- Sekcja O Mnie --- */
.social-links {
    margin-top: var(--spacing-medium);
    display: flex;
    gap: var(--spacing-small);
}

.social-links a {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-text-muted);
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.social-links a:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-text-light);
}

/* --- Sekcja Umiejętności --- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-medium);
    margin-top: var(--spacing-medium);
}

.skill-card {
    background: var(--color-background);
    padding: var(--spacing-medium);
    border-radius: 12px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.2);
}

.skill-card h3 {
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

.icon-primary {
    font-size: 3rem;
    color: var(--color-secondary);
}

/* --- Sekcja Projekty --- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-large);
    margin-top: var(--spacing-medium);
}

.project-card {
    background: var(--color-card-background);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 45px rgba(16, 185, 129, 0.3);
}

.project-figure {
    height: 200px;
    background: #000; /* Placeholder dla obrazu */
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--color-text-muted);
    font-style: italic;
}

.project-info {
    padding: var(--spacing-medium);
}

.project-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.tags {
    color: var(--color-secondary);
    font-size: 0.9rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.project-desc {
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.project-links a {
    margin-right: var(--spacing-small);
    font-weight: 600;
}

.project-links .live-link {
    color: var(--color-secondary);
}

/* --- Sekcja Kontakt --- */
.contact-button {
    margin-top: var(--spacing-medium);
    font-size: 1.1rem;
}

/* --- Stopka --- */
footer {
    background: #000;
    padding: var(--spacing-small) 0;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* --- Responsywność (Mobile) --- */
@media (max-width: 768px) {
    /* Nawigacja */
    #main-header nav ul {
        display: none; /* Ukryj listę linków */
        flex-direction: column;
        position: absolute;
        top: 60px; /* Pod nagłówkiem */
        left: 0;
        width: 100%;
        background: var(--color-card-background);
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
        padding: var(--spacing-small) 0;
        text-align: center;
    }

    #main-header nav ul.active {
        display: flex; /* Pokaż po kliknięciu */
    }

    #main-header nav ul li {
        width: 100%;
        padding: 0.5rem 0;
    }
    
    .menu-toggle {
        display: block; /* Pokaż ikonę menu */
    }
    
    /* Hero */
    .hero-content {
        flex-direction: column-reverse; /* Zdjęcie na górze w widoku mobilnym */
        text-align: center;
    }

    .name {
        font-size: 3rem;
    }
    
    .role {
        font-size: 2rem;
    }
    
    .profile-photo {
        width: 200px;
        height: 200px;
        margin-bottom: var(--spacing-medium);
    }
}

/* --- Animacja Efektu Pisania (CSS dla kursora) --- */
.typing-effect {
    position: relative;
    border-right: 2px solid var(--color-primary); /* Kursor */
    white-space: nowrap;
    overflow: hidden;
    animation: blink-caret 0.75s step-end infinite;
}

/* Animacja migania kursora */
@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: var(--color-primary); }
}