:root {
    /* Modern Color Palette */
    --primary-color: #2563eb; /* Royal Blue */
    --primary-dark: #1e40af;
    --secondary-color: #64748b; /* Slate Grey */
    --accent-color: #f59e0b; /* Amber */
    --dark-color: #0f172a; /* Slate 900 */
    --light-color: #f8fafc; /* Slate 50 */
    --white-color: #ffffff;

    --font-family: 'Roboto', sans-serif;
    --border-radius: 16px;
    --box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--secondary-color);
    background-color: var(--light-color);
    padding-top: 76px;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--dark-color);
    font-weight: 700;
}

/* --- Nawigacja --- */
.navbar {
    background-color: rgba(255, 255, 255, 0.9) !important;
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary-color) !important;
    letter-spacing: -0.5px;
}

.nav-link {
    font-weight: 500;
    color: var(--dark-color) !important;
    margin: 0 4px;
    padding: 8px 16px !important;
    border-radius: 50px;
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color) !important;
    background-color: rgba(37, 99, 235, 0.08);
}

/* --- Sekcja Hero --- */
.hero {
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.95), rgba(37, 99, 235, 0.85)), url('https://images.unsplash.com/photo-1626785774573-4b799314348d?auto=format&fit=crop&w=1920&q=80') no-repeat center center;
    background-size: cover;
    background-attachment: fixed;
    padding: 180px 0 140px;
    text-align: center;
    color: var(--white-color);
    clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
    margin-bottom: 2rem;
}

.hero h1 {
    color: var(--white-color);
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.95;
    font-weight: 300;
}

/* --- Przyciski --- */
.btn {
    border-radius: 50px;
    padding: 12px 32px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-size: 0.85rem;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.5);
}

.btn-accent {
    background-color: var(--accent-color);
    color: var(--white-color);
    box-shadow: 0 4px 6px -1px rgba(245, 158, 11, 0.4);
}

.btn-accent:hover {
    background-color: #d97706;
    color: var(--white-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(245, 158, 11, 0.5);
}

.btn-outline-light:hover {
    background-color: var(--white-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* --- Tytuły Sekcji --- */
.section-title {
    text-align: center;
    margin-bottom: 4rem;
    font-weight: 800;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 15px auto 0;
    border-radius: 2px;
}

/* --- Karty i Elementy --- */
.sticker-feature-card, .service-card, .card {
    background: var(--white-color);
    border: none;
    border-radius: var(--border-radius);
    padding: 2rem;
    height: 100%;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
    position: relative;
    z-index: 1;
}

.sticker-feature-card:hover, .service-card:hover, .card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.sticker-icon, .service-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    display: inline-block;
    background: rgba(37, 99, 235, 0.1);
    padding: 15px;
    border-radius: 12px;
}

.ls-2 {
    letter-spacing: 2px;
}

/* --- Sekcje --- */
.content-section {
    padding: 100px 0;
}

.bg-light {
    background-color: var(--light-color) !important;
}

.bg-primary {
    background-color: var(--primary-color) !important;
}

/* --- Kontakt --- */
#contact i {
    color: var(--primary-color);
    font-size: 1.25rem;
    margin-right: 1rem;
    background: rgba(37, 99, 235, 0.1);
    padding: 10px;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-control {
    border-radius: 8px;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    background-color: #f8fafc;
}

.form-control:focus {
    background-color: #fff;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Antispam Honeypot */
.honey-pot {
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    height: 0;
    width: 0;
    z-index: -1;
}

/* --- Stopka --- */
.footer {
    background-color: var(--dark-color);
    color: #94a3b8;
    padding: 60px 0;
    font-size: 0.9rem;
}

.footer a {
    color: #cbd5e1;
    transition: color 0.2s;
}

.footer a:hover {
    color: var(--white-color);
}

/* --- Animacje --- */
.fade-in-up {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    opacity: 0;
    transform: translateY(30px);
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Media Queries --- */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    .hero {
        padding: 140px 0 100px;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 60px;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .section-title {
        margin-bottom: 3rem;
    }
    .content-section {
        padding: 60px 0;
    }
}