/* ZMIENNE - Ciemny motyw premium + neonowy akcent */
:root {
    --bg-dark: #0a0a0a;
    --text-light: #f5f5f5;
    --text-muted: #888888;
    --border-color: #2a2a2a; /* Wyraźne, ale eleganckie krawędzie */
    --accent-neon: #ff5500; /* Sceniczny, ostrzegawczy pomarańcz */
}

/* RESET */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; background-color: var(--bg-dark); }
body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
}

/* TYPOGRAFIA */
h1, h2, h3, .logo, .btn-neon, .big-link {
    font-family: 'Syne', sans-serif;
    text-transform: uppercase;
    font-weight: 800;
}
h1 { font-size: clamp(2.5rem, 6vw, 5.5rem); line-height: 1.05; letter-spacing: -1px; }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
h3 { font-size: 1.5rem; margin-bottom: 0.5rem; }
a { color: var(--text-light); text-decoration: none; transition: 0.3s; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--accent-neon);
    outline-offset: 2px;
}
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.subtitle { font-size: clamp(1rem, 2vw, 1.2rem); color: var(--text-muted); max-width: 600px; margin-top: 1.5rem; }
.large-text { font-size: clamp(1.1rem, 2vw, 1.5rem); }

/* STRUKTURA BORDERS (Z Wersji B) */
.container { max-width: 1400px; margin: 0 auto; }
.border-bottom { border-bottom: 1px solid var(--border-color); }
.border-top { border-top: 1px solid var(--border-color); }
.border-left { border-left: 1px solid var(--border-color); }
.border-right { border-right: 1px solid var(--border-color); }
.content-padding { padding: 3rem; }
.huge-padding { padding: 8rem 3rem; }
.text-center { text-align: center; padding: 2rem; color: var(--text-muted); }

/* NAWIGACJA */
.top-bar {
    position: sticky; top: 0;
    background-color: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(12px);
    z-index: 1000;
}
.header-inner { display: flex; justify-content: space-between; align-items: center; padding: 1.2rem 3rem; }
.logo { font-size: 1.5rem; letter-spacing: 1px; }
.logo:hover { color: var(--accent-neon); }
.main-nav a { margin: 0 1.5rem; font-weight: 500; font-size: 0.95rem; }
.main-nav a:hover { color: var(--accent-neon); }

/* PRZYCISK NEONOWY */
.btn-neon {
    background-color: var(--accent-neon);
    color: var(--bg-dark);
    padding: 0.8rem 2rem;
    font-size: 1rem;
    border-radius: 2px;
    transition: all 0.2s ease;
}
.btn-neon:hover {
    background-color: var(--text-light);
    transform: translateY(-2px);
}

/* UKŁADY DZIELONE (SPLIT) */
.split-layout { display: flex; }
.split-left, .split-right { flex: 1; }
.border-right-on-desktop { border-right: 1px solid var(--border-color); }

/* SIATKA USŁUG */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.img-wrapper { overflow: hidden; }
.img-wrapper img { 
    width: 100%; height: 350px; object-fit: cover; display: block;
    filter: grayscale(100%) brightness(0.7);
    transition: transform 0.6s, filter 0.6s;
}
.service-item:hover img {
    filter: grayscale(0%) brightness(1);
    transform: scale(1.05);
}
.service-item p { color: var(--text-muted); }

/* HERO CTA */
.hero-cta { display: flex; gap: 1rem; margin-top: 2rem; flex-wrap: wrap; }
.btn-outline {
    border: 2px solid var(--accent-neon);
    color: var(--accent-neon);
    padding: 0.8rem 2rem;
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    text-transform: uppercase;
    font-size: 1rem;
    border-radius: 2px;
    transition: all 0.2s ease;
}
.btn-outline:hover {
    background-color: var(--accent-neon);
    color: var(--bg-dark);
    transform: translateY(-2px);
}

/* DLA KOGO */
.dla-kogo-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.dla-kogo-card {
    padding: 2.5rem;
    text-align: center;
    transition: background-color 0.2s;
}
.dla-kogo-card:hover { background-color: rgba(255, 85, 0, 0.05); }
.dla-kogo-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.dla-kogo-card h3 { margin-bottom: 0.75rem; }
.dla-kogo-card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.5; }
.border-bottom-on-mobile { border-bottom: none; }

/* JAK TO DZIAŁA */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.step-item { padding: 3rem; }
.step-num {
    display: block;
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 3rem;
    color: var(--accent-neon);
    opacity: 0.6;
    margin-bottom: 0.5rem;
}
.step-item h3 { margin-bottom: 0.5rem; }
.step-item p { color: var(--text-muted); }

/* DLACZEGO MY */
.dlaczego-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.dlaczego-item { padding: 2.5rem; }
.dlaczego-item h3 { margin-bottom: 0.5rem; font-size: 1.1rem; }
.dlaczego-item p { color: var(--text-muted); font-size: 0.95rem; }

/* KONTAKT */
.contact-bg { background-color: #111; }
.flex-center { display: flex; align-items: center; }
.contact-links { display: flex; flex-direction: column; gap: 1.5rem; }
.big-link { font-size: clamp(1.5rem, 3vw, 3rem); line-height: 1; border-bottom: 2px solid transparent; display: inline-block; width: fit-content; }
.big-link:hover { color: var(--accent-neon); border-color: var(--accent-neon); }

/* FORMULARZ KONTAKTOWY */
.contact-form-wrapper { width: 100%; max-width: 400px; }
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.contact-form input,
.contact-form textarea {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-light);
    padding: 0.9rem 1rem;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: var(--text-muted); }
.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-neon);
}
.contact-form textarea { resize: vertical; min-height: 100px; }
.contact-form .btn-neon { align-self: flex-start; cursor: pointer; }

/* ANIMACJE (Z Wersji A) */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease-out, transform 0.8s ease-out; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* PŁYWAJĄCY PRZYCISK DO GÓRY */
.back-to-top {
    position: fixed; bottom: 30px; right: 30px;
    width: 50px; height: 50px;
    background-color: var(--border-color);
    color: var(--text-light);
    display: flex; justify-content: center; align-items: center;
    font-size: 1.5rem; font-weight: bold; border-radius: 50%;
    opacity: 0; pointer-events: none; z-index: 999;
    transition: opacity 0.3s, background-color 0.3s, transform 0.3s;
}
.back-to-top.show { opacity: 1; pointer-events: auto; }
.back-to-top:hover { background-color: var(--accent-neon); color: var(--bg-dark); transform: translateY(-5px); }

/* RESPONSYWNOŚĆ (Mobile) */
@media (max-width: 992px) {
    .split-layout { flex-direction: column; }
    .border-right-on-desktop { border-right: none; }
    .split-left { border-bottom: 1px solid var(--border-color); }
    .services-grid { grid-template-columns: 1fr; }
    .service-item.border-right-on-desktop { border-bottom: 1px solid var(--border-color); }
    
    .dla-kogo-grid { grid-template-columns: 1fr; }
    .dla-kogo-card.border-bottom-on-mobile { border-bottom: 1px solid var(--border-color); }
    .dla-kogo-card:last-child { border-bottom: none; }
    
    .steps-grid { grid-template-columns: 1fr; }
    .step-item.border-right-on-desktop { border-bottom: 1px solid var(--border-color); }
    
    .dlaczego-grid { grid-template-columns: 1fr; }
    .dlaczego-item.border-right-on-desktop { border-bottom: 1px solid var(--border-color); }
    
    .header-inner { flex-direction: column; gap: 1rem; padding: 1rem; }
    .main-nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.75rem; }
    .main-nav a { margin: 0; font-size: 0.9rem; }
    
    .content-padding, .huge-padding { padding: 2rem 1.5rem; }
    .container { border-left: none; border-right: none; }
}