/* =============================
   WebKutil — style.css
   ============================= */

:root {
    --wk-bg: #0a0a0a;
    --wk-surface: #141414;
    --wk-surface2: #1a1a1a;
    --wk-border: #2a2a2a;
    --wk-text: #e5e5e5;
    --wk-text-muted: #888;
    --wk-accent: #f97316;
    --wk-accent-hover: #fb923c;
    --wk-accent-glow: rgba(249, 115, 22, 0.15);
    --wk-green: #22c55e;
    --wk-red: #ef4444;
    --wk-radius: 12px;
    --wk-radius-lg: 18px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--wk-bg);
    color: var(--wk-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

/* ---- NAV ---- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--wk-border);
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}
.nav-logo {
    font-size: 20px;
    font-weight: 900;
    color: var(--wk-text);
    text-decoration: none;
    letter-spacing: -0.5px;
}
.nav-logo span { color: var(--wk-accent); }
.nav-links { display: flex; gap: 6px; align-items: center; }
.nav-links a {
    color: var(--wk-text-muted);
    text-decoration: none;
    font-size: 14px;
    padding: 6px 12px;
    border-radius: 8px;
    transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: #fff; background: rgba(255,255,255,0.06); }
.nav-cta {
    background: var(--wk-accent) !important;
    color: #fff !important;
    font-weight: 600;
}
.nav-cta:hover { background: var(--wk-accent-hover) !important; }
.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--wk-border);
    color: var(--wk-text);
    font-size: 20px;
    padding: 6px 10px;
    border-radius: 8px;
    cursor: pointer;
}

/* ---- HERO ---- */
.hero {
    padding: 140px 0 80px;
    text-align: center;
    background: radial-gradient(ellipse at 50% 0%, var(--wk-accent-glow) 0%, transparent 60%);
}
.hero h1 {
    font-size: clamp(2.2rem, 6vw, 3.8rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -1px;
    margin-bottom: 20px;
}
.hero-sub {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--wk-text-muted);
    max-width: 620px;
    margin: 0 auto 32px;
    line-height: 1.7;
}
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---- BUTTONS ---- */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
    background: var(--wk-accent);
    color: #fff;
    box-shadow: 0 4px 20px var(--wk-accent-glow);
}
.btn-primary:hover { background: var(--wk-accent-hover); box-shadow: 0 6px 30px var(--wk-accent-glow); }
.btn-ghost {
    background: transparent;
    color: var(--wk-text);
    border: 1px solid var(--wk-border);
}
.btn-ghost:hover { border-color: var(--wk-text-muted); background: rgba(255,255,255,0.04); }

/* ---- SECTIONS ---- */
.section { padding: 80px 0; }
.section-alt { background: var(--wk-surface); }
.section h2 {
    font-size: clamp(1.6rem, 4vw, 2.2rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: 12px;
}
.section-sub {
    text-align: center;
    color: var(--wk-text-muted);
    max-width: 520px;
    margin: 0 auto 40px;
}

/* ---- CARDS (sluzby) ---- */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-top: 40px;
}
.card {
    background: var(--wk-surface2);
    border: 1px solid var(--wk-border);
    border-radius: var(--wk-radius-lg);
    padding: 28px 24px;
    transition: border-color 0.2s, transform 0.2s;
}
.card:hover { border-color: var(--wk-accent); transform: translateY(-2px); }
.card-icon { font-size: 32px; margin-bottom: 12px; }
.card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.card p { font-size: 14px; color: var(--wk-text-muted); line-height: 1.6; }

/* ---- COMPARE ---- */
.compare {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    max-width: 800px;
    margin: 40px auto 0;
}
.compare-col {
    border-radius: var(--wk-radius-lg);
    padding: 28px 24px;
    border: 1px solid var(--wk-border);
}
.compare-col h3 { font-size: 16px; margin-bottom: 16px; }
.compare-col ul { list-style: none; }
.compare-col li {
    padding: 8px 0;
    font-size: 14px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    color: var(--wk-text-muted);
}
.compare-col li:last-child { border-bottom: none; }
.compare-bad { background: rgba(239,68,68,0.04); border-color: rgba(239,68,68,0.15); }
.compare-good { background: rgba(34,197,94,0.04); border-color: rgba(34,197,94,0.15); }
.compare-good li { color: var(--wk-text); }

/* ---- PORTFOLIO ---- */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 16px;
    margin-top: 40px;
}
.portfolio-item {
    background: var(--wk-surface2);
    border: 1px solid var(--wk-border);
    border-radius: var(--wk-radius-lg);
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    transition: border-color 0.2s;
}
.portfolio-item:hover { border-color: var(--wk-accent); }
.portfolio-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--wk-accent);
    background: var(--wk-accent-glow);
    padding: 4px 10px;
    border-radius: 999px;
    margin-bottom: 12px;
    width: fit-content;
}
.portfolio-item h3 { font-size: 20px; margin-bottom: 10px; }
.portfolio-item p { font-size: 14px; color: var(--wk-text-muted); line-height: 1.6; flex: 1; }
.portfolio-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 16px 0;
}
.portfolio-tech span {
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 6px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    color: var(--wk-text-muted);
}
.portfolio-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--wk-accent);
    text-decoration: none;
}
.portfolio-link:hover { color: var(--wk-accent-hover); }

/* ---- STEPS ---- */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 40px;
}
.step {
    text-align: center;
    padding: 24px 16px;
}
.step-num {
    width: 48px;
    height: 48px;
    line-height: 48px;
    border-radius: 50%;
    background: var(--wk-accent);
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    margin: 0 auto 14px;
}
.step h3 { font-size: 15px; margin-bottom: 8px; }
.step p { font-size: 13px; color: var(--wk-text-muted); }

/* ---- PRICING ---- */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 40px;
}
.pricing-card {
    background: var(--wk-surface2);
    border: 1px solid var(--wk-border);
    border-radius: var(--wk-radius-lg);
    padding: 32px 24px;
    text-align: center;
    position: relative;
    transition: border-color 0.2s, transform 0.2s;
}
.pricing-card:hover { border-color: var(--wk-accent); transform: translateY(-2px); }
.pricing-highlight {
    border-color: var(--wk-accent);
    box-shadow: 0 0 30px var(--wk-accent-glow);
}
.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--wk-accent);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 4px 14px;
    border-radius: 999px;
    white-space: nowrap;
}
.pricing-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
}
.pricing-highlight h3 { margin-top: 8px; }
.pricing-price {
    font-size: 32px;
    font-weight: 900;
    color: var(--wk-accent);
    line-height: 1.2;
}
.pricing-period {
    font-size: 13px;
    color: var(--wk-text-muted);
    margin-bottom: 20px;
}
.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: 0;
}
.pricing-features li {
    padding: 8px 0;
    font-size: 14px;
    color: var(--wk-text-muted);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.pricing-features li:last-child { border-bottom: none; }
.pricing-features li::before {
    content: "\2713";
    color: var(--wk-green);
    font-weight: 700;
    margin-right: 8px;
}
.pricing-note {
    text-align: center;
    color: var(--wk-text-muted);
    font-size: 13px;
    margin-top: 24px;
}
.pricing-note a { color: var(--wk-accent); text-decoration: none; }
.pricing-note a:hover { color: var(--wk-accent-hover); }

/* ---- TECH GRID ---- */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
    margin-top: 40px;
}
.tech-item {
    text-align: center;
    padding: 16px 10px;
    border: 1px solid var(--wk-border);
    border-radius: var(--wk-radius);
    background: var(--wk-surface2);
}
.tech-item strong { display: block; font-size: 14px; margin-bottom: 2px; }
.tech-item span { font-size: 12px; color: var(--wk-text-muted); }

/* ---- CONTACT ---- */
.contact-cards {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 40px;
}
.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 28px 40px;
    border: 1px solid var(--wk-border);
    border-radius: var(--wk-radius-lg);
    background: var(--wk-surface2);
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s, transform 0.2s;
    min-width: 220px;
}
.contact-card:hover { border-color: var(--wk-accent); transform: translateY(-2px); }
.contact-icon { font-size: 32px; }
.contact-label { font-size: 12px; color: var(--wk-text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.contact-value { font-size: 17px; font-weight: 700; }

/* ---- FOOTER ---- */
.footer {
    padding: 24px 0;
    border-top: 1px solid var(--wk-border);
}
.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.footer-brand {
    font-weight: 900;
    font-size: 16px;
}
.footer-brand span { color: var(--wk-accent); }
.footer-copy { font-size: 13px; color: var(--wk-text-muted); }

/* ---- LANGUAGE SWITCHER ---- */
.lang-switcher {
    position: relative;
    margin-left: 8px;
}
.lang-current {
    display: flex;
    align-items: center;
    gap: 4px;
    background: none;
    border: 1px solid var(--wk-border);
    color: var(--wk-accent);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 6px 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    line-height: 1;
}
.lang-current:hover {
    border-color: var(--wk-accent);
    background: rgba(255,255,255,0.04);
}
.lang-arrow {
    font-size: 10px;
    color: var(--wk-text-muted);
    transition: transform 0.2s;
}
.lang-dropdown.open + .lang-current .lang-arrow,
.lang-dropdown.open ~ .lang-current .lang-arrow {
    transform: rotate(180deg);
}
.lang-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 150px;
    background: var(--wk-surface);
    border: 1px solid var(--wk-border);
    border-radius: var(--wk-radius);
    padding: 6px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    z-index: 200;
}
.lang-dropdown.open {
    display: block;
}
.lang-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    text-decoration: none;
    color: var(--wk-text);
    font-size: 14px;
    border-radius: 8px;
    transition: background 0.15s;
}
.lang-option:hover {
    background: rgba(255,255,255,0.06);
}
.lang-option.lang-active {
    background: var(--wk-accent-glow);
    color: var(--wk-accent);
    font-weight: 600;
}
.lang-flag {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    line-height: 1;
    color: var(--wk-accent);
    min-width: 20px;
    text-align: center;
}
.lang-name {
    white-space: nowrap;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 10, 0.95);
        backdrop-filter: blur(12px);
        flex-direction: column;
        padding: 12px 20px;
        border-bottom: 1px solid var(--wk-border);
    }
    .nav-links.open { display: flex; }
    .nav-links a { padding: 12px 0; font-size: 16px; }
    .nav-toggle { display: block; }
    .lang-switcher { margin-left: auto; margin-right: 8px; }
    .lang-dropdown { right: -8px; }

    .hero { padding: 120px 0 60px; }
    .section { padding: 60px 0; }

    .compare { grid-template-columns: 1fr; }
    .portfolio-grid { grid-template-columns: 1fr; }

    .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 400px) {
    .hero h1 { font-size: 1.8rem; }
    .hero-actions { flex-direction: column; align-items: center; }
    .btn { width: 100%; text-align: center; }
    .contact-card { width: 100%; }
}