:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --dark: #0f172a;
    --darker: #020617;
    --light: #f8fafc;
    --accent: #38bdf8;
    --white: #ffffff;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
}

/* Sections Isolation */
section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 100px 0;
    position: relative;
    border-bottom: 1px solid #f1f5f9;
}

.section-title {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 40px;
    font-weight: 800;
    width: 100%;
}

.align-left { text-align: left; }

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(15px);
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--dark);
    text-decoration: none;
    letter-spacing: -1px;
}

.logo span { color: var(--primary); }

.nav-menu a {
    margin-left: 30px;
    text-decoration: none;
    color: var(--dark);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
}

.nav-menu a i {
    margin-right: 8px;
    color: var(--primary);
    font-size: 0.9em;
    transition: var(--transition);
}

.nav-menu a:hover { color: var(--primary); }
.nav-menu a:hover i { transform: scale(1.1); }

.btn-cta {
    background: var(--primary);
    color: white !important;
    padding: 12px 25px;
    border-radius: 12px;
}

.btn-cta i {
    color: white !important;
}

/* Hero */
.hero {
    background: url('https://images.unsplash.com/photo-1519389950473-47ba0277781c?auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
    color: var(--white);
    text-align: left;
}

.hero-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.4) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
}

.hero h1 {
    font-size: clamp(2.8rem, 7vw, 5rem);
    line-height: 1.05;
    margin-bottom: 25px;
    font-weight: 800;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 18px 35px;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 10px 20px -5px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    background: var(--primary-dark);
    box-shadow: 0 15px 25px -5px rgba(37, 99, 235, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-left: 15px;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.btn-full { width: 100%; }

/* Grids */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

/* About Section */
.about-image img {
    width: 100%;
    border-radius: 24px;
    box-shadow: var(--shadow);
    filter: brightness(0.95) contrast(1.05);
}

/* Services */
.services { background: var(--light); }

.card {
    padding: 50px 40px;
    background: var(--white);
    border-radius: 24px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.card:hover { transform: translateY(-10px); }

.card i { color: var(--primary); margin-bottom: 25px; }

/* Materials */
.check-list li {
    list-style: none;
    margin-bottom: 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
}

.check-list li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    color: var(--primary);
    margin-right: 15px;
    background: #dbeafe;
    padding: 5px;
    border-radius: 50%;
    font-size: 0.8rem;
}

.floating-img {
    max-width: 100%;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.1));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* Kontakt */
.contact { background: var(--white); }

.contact-layout {
    align-items: stretch;
    grid-template-columns: 1fr 1fr;
}

.contact-form-wrapper {
    background: var(--darker);
    padding: 50px;
    border-radius: 30px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    color: var(--white);
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 100%;
}

.contact-form-wrapper h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
}

.modern-form {
    width: 100%;
}

.modern-form input, .modern-form textarea {
    width: 100%;
    padding: 18px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.05);
    color: white;
    margin-bottom: 20px;
    font-family: inherit;
    transition: var(--transition);
    display: block;
}

.modern-form textarea {
    min-height: 200px;
    resize: vertical;
}

.modern-form input:focus, .modern-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255,255,255,0.1);
}

.info-box-simple {
    margin-top: 30px;
    background: var(--light);
    padding: 30px;
    border-radius: 20px;
    border-left: 5px solid var(--primary);
}

.contact-lead {
    font-size: 0.95rem;
    color: var(--dark);
    margin-bottom: 20px;
    font-weight: 600;
    line-height: 1.5;
}

.info-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.info-details p {
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--dark);
}

.info-details i {
    color: var(--primary);
    width: 20px;
    text-align: center;
}

/* Footer */
footer {
    padding: 50px 0;
    background: var(--darker);
    color: var(--secondary);
    text-align: center;
}

/* Responsive */
@media (max-width: 992px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .hero-btns { display: flex; flex-direction: column; gap: 15px; }
    .btn-secondary { margin-left: 0; }
    .navbar { padding: 15px 0; }
    section { padding: 60px 0; min-height: auto; }
    .contact-form-wrapper { padding: 30px; }
    .about-image { order: -1; }
    .contact-layout { grid-template-columns: 1fr; }
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--dark);
    cursor: pointer;
}

@media (max-width: 768px) {
    .mobile-toggle { display: block; }
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%; left: 0; width: 100%;
        background: white;
        flex-direction: column;
        padding: 30px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    }
    .nav-menu.active { display: flex; }
    .nav-menu a { margin: 15px 0; margin-left: 0; }
}