:root {
    --primary: #3498db;
    --primary-dark: #2980b9;
    --dark: #121212;
    --light: #ffffff;
    --gray: #f4f6f8;
    --text: #333;
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid #eee;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--dark);
}
.nav-links a {
    text-decoration: none;
    color: var(--text);
    margin-left: 20px;
    font-weight: 500;
}
.nav-links a:hover {
    color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
}
.btn-primary {
    background: var(--primary);
    color: white;
    border: 2px solid var(--primary);
}
.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}
.btn-outline {
    background: transparent;
    color: var(--text);
    border: 2px solid #ddd;
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}
.btn-lg {
    padding: 15px 30px;
    font-size: 1.1rem;
}
.full-width {
    display: block;
    text-align: center;
    margin-top: 20px;
}

/* Hero */
.hero {
    background: var(--dark);
    color: white;
    padding: 80px 0 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.1;
}
.hero p {
    font-size: 1.2rem;
    color: #bbb;
    max-width: 600px;
    margin: 0 auto 40px;
}
.highlight {
    color: var(--primary);
}
.hero-buttons {
    margin-bottom: 60px;
}
.hero-buttons .btn-outline {
    color: white;
    border-color: #555;
}
.hero-buttons .btn-outline:hover {
    border-color: white;
}

/* Mockup */
.app-preview {
    display: flex;
    justify-content: center;
}
.mockup-window {
    background: #1e1e1e;
    border-radius: 10px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    width: 800px;
    max-width: 100%;
    text-align: left;
    border: 1px solid #333;
}
.mockup-header {
    padding: 10px 15px;
    background: #2c2c2c;
    border-radius: 10px 10px 0 0;
    display: flex;
    gap: 6px;
}
.dot {
    width: 10px; height: 10px; border-radius: 50%; background: #555;
}
.fake-ui {
    display: flex;
    height: 300px;
}
.fake-sidebar {
    width: 200px;
    background: #252525;
    border-right: 1px solid #333;
}
.fake-content {
    padding: 30px;
    color: #ddd;
}
.fake-chords span {
    color: #e74c3c;
    font-weight: bold;
    margin-right: 10px;
}
.fake-text {
    margin-top: 10px;
    font-size: 1.2rem;
}

/* Features */
.features {
    padding: 80px 0;
    background: var(--light);
}
.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}
.feature-card {
    padding: 30px;
    border-radius: 10px;
    background: white;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}
.feature-card:hover {
    transform: translateY(-5px);
}
.icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

/* Pricing */
.pricing {
    padding: 80px 0;
    background: var(--gray);
}
.pricing h2 {
    text-align: center;
    margin-bottom: 60px;
    font-size: 2.5rem;
}
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.pricing-card {
    background: white;
    padding: 40px;
    border-radius: 10px;
    border: 1px solid #eee;
    position: relative;
}
.pricing-card.featured {
    border: 2px solid var(--primary);
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(52, 152, 219, 0.2);
    z-index: 1;
}
.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
}
.price {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 20px 0;
    color: var(--dark);
}
.period {
    font-size: 1rem;
    color: #777;
    font-weight: 400;
}
.pricing-card ul {
    list-style: none;
    padding: 0;
    margin: 30px 0;
}
.pricing-card li {
    margin-bottom: 10px;
    color: #555;
}

/* Footer */
footer {
    background: var(--dark);
    color: #777;
    padding: 40px 0;
}
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-links a {
    color: #777;
    text-decoration: none;
    margin-left: 20px;
}
.footer-links a:hover {
    color: white;
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .mockup-window { display: none; } /* Ukryj mockup na telefonie */
    .pricing-card.featured { transform: none; }
    .footer-content { flex-direction: column; gap: 20px; }
}