:root {
    --bg-color: #ffffff;
    --bg-light: #f7f7f7;
    --bg-dark: #111111;
    --text-main: #111111;
    --text-muted: #666666;
    --text-light: #ffffff;
    
    /* Editorial typografie - nadpisy patkové, text bezpatkový */
    --font-heading: "Georgia", "Times New Roman", serif;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    --space-sm: 1rem;
    --space-md: 2.5rem;
    --space-lg: 6rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-main);
    background-color: var(--bg-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Typografie */
h1, h2, h3 {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: var(--space-md);
}

h1 { font-size: clamp(3rem, 6vw, 5.5rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
h3 { font-size: 1.5rem; margin-bottom: 0.5rem; }

p { margin-bottom: 1.5rem; }
.subtitle { font-size: 1.25rem; color: var(--text-muted); max-width: 600px; margin-bottom: var(--space-md); }
.large-text { font-size: clamp(1.2rem, 2vw, 1.8rem); max-width: 800px; line-height: 1.5; }
.section-desc { font-size: 1.2rem; color: var(--text-muted); max-width: 600px; margin-bottom: var(--space-md); }

a { color: inherit; text-decoration: none; transition: opacity 0.3s ease; }
a:hover { opacity: 0.6; }

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section { padding: var(--space-lg) 0; }
.bg-light { background-color: var(--bg-light); }
.bg-dark { background-color: var(--bg-dark); color: var(--text-light); }

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid #eaeaea;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo { font-family: var(--font-heading); font-size: 1.5rem; font-weight: bold; }
.nav { display: flex; gap: 2rem; }
.nav a { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.05em; }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding-top: 120px;
}

.hero-cta { display: flex; gap: 1rem; margin-top: 2rem; }

/* Tlačítka */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid var(--text-main);
    transition: all 0.3s ease;
}

.btn-primary { background: var(--text-main); color: var(--bg-color); }
.btn-primary:hover { background: transparent; color: var(--text-main); opacity: 1; }
.btn-secondary { background: transparent; color: var(--text-main); }
.btn-secondary:hover { background: var(--text-main); color: var(--bg-color); opacity: 1; }
.btn-light { border-color: var(--text-light); color: var(--text-light); }
.btn-light:hover { background: var(--text-light); color: var(--bg-dark); }

/* Grid a Komponenty */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.card {
    padding: 2rem;
    border: 1px solid #eaeaea;
    font-size: 1.1rem;
    font-family: var(--font-heading);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 120px;
}

.clean-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    border-top: 1px solid #eaeaea;
    padding-top: 2rem;
}

.clean-list li {
    font-size: 1.2rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #eaeaea;
}

/* Jak fungujeme */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 3rem; }
.step-num { display: block; font-family: var(--font-heading); font-size: 3rem; color: #ccc; margin-bottom: 1rem; }

/* Kontakt */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; margin-bottom: 4rem; }
.label { display: block; font-size: 0.8rem; text-transform: uppercase; color: #999; margin-bottom: 0.5rem; letter-spacing: 0.05em; }
.contact-item a, .contact-item p { font-size: 1.5rem; font-family: var(--font-heading); }
.bottom-cta { border-top: 1px solid #333; padding-top: 2rem; }

/* Footer */
.footer { padding: 2rem 0; font-size: 0.9rem; color: var(--text-muted); border-top: 1px solid #eaeaea; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }

/* Responsive */
@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: rgba(255,255,255,0.98);
        flex-direction: column;
        padding: 2rem;
        border-bottom: 1px solid #eaeaea;
    }
    .nav.active { display: flex; }
    .mobile-menu-btn { display: block; }
    .hero-cta { flex-direction: column; }
    .btn { text-align: center; }
}