:root {
    --bg-black: #0a0a0a;
    --bg-card: #121212;
    --text-white: #ffffff;
    --text-gray: #8e8e93;
    --border-gray: #222222;
    --accent-white: #ffffff;
    --font-serif: 'Times New Roman', Times, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
    background-color: var(--bg-black);
    color: var(--text-white);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
}

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

a:hover {
    opacity: 0.7;
}

/* Navigácia */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(10, 10, 10, 0.90);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-gray);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 25px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

.logo span {
    font-weight: 300;
    color: var(--text-gray);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 35px;
}

nav ul a {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 500;
}

/* Hero Sekcia */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 10%;
    background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1600585154340-be6161a56a0c?auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
    position: relative;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-family: var(--font-serif);
    font-size: 5rem;
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.hero h3 {
    font-size: 1.3rem;
    font-weight: 300;
    color: var(--text-gray);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* Sekcie všeobecne */
section {
    padding: 140px 10%;
    max-width: 1400px;
    margin: 0 auto;
    border-bottom: 1px solid var(--border-gray);
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.8rem;
    font-weight: 400;
    text-transform: uppercase;
    margin-bottom: 60px;
    letter-spacing: 0.05em;
}

.intro-text {
    font-size: 1.35rem;
    font-weight: 300;
    color: var(--text-white);
    max-width: 900px;
    line-height: 1.8;
    margin-bottom: 40px;
}

/* Grid pre Prístup / Výhody */
.grid-approach {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 60px;
}

.approach-card {
    background-color: var(--bg-card);
    padding: 40px;
    border: 1px solid var(--border-gray);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.approach-card:hover {
    border-color: #555555;
    transform: translateY(-5px);
}

.approach-card h3 {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 15px;
}

.approach-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* Portfólio / Referencie */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    height: 450px;
    border: 1px solid var(--border-gray);
}

.portfolio-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1), filter 0.6s ease;
}

.portfolio-item:hover .portfolio-img {
    transform: scale(1.05);
    filter: grayscale(0%);
}

.portfolio-meta {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 30px;
    background: linear-gradient(transparent, rgba(0,0,0,0.9));
}

.portfolio-meta span {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--text-gray);
}

.portfolio-meta h4 {
    font-size: 1.4rem;
    font-weight: 400;
    margin-top: 5px;
}

/* Cenník */
.price-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 30px;
}

.price-table th, .price-table td {
    padding: 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-gray);
}

.price-table th {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-gray);
}

.price-table tr:hover td {
    background-color: rgba(255,255,255,0.02);
}

.price-value {
    font-weight: 600;
    text-align: right;
}

/* Kontakt */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-info div {
    margin-bottom: 30px;
}

.contact-info h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-gray);
    margin-bottom: 5px;
}

.contact-info p, .contact-info a {
    font-size: 1.2rem;
    font-weight: 300;
}

/* Admin / Formuláre */
.admin-container {
    padding-top: 140px;
    max-width: 1000px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.85rem;
    text-transform: uppercase;
    color: var(--text-gray);
}

input, textarea, select {
    width: 100%;
    padding: 12px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-gray);
    color: white;
    font-family: inherit;
}

input:focus, textarea:focus {
    outline: none;
    border-color: #555555;
}

button {
    background-color: white;
    color: black;
    border: none;
    padding: 12px 30px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: var(--text-gray);
}

footer {
    padding: 40px 10%;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-gray);
    border-top: 1px solid var(--border-gray);
}

@media(max-width: 900px) {
    .grid-approach, .portfolio-grid, .contact-wrapper {
        grid-template-columns: 1fr;
    }
    .hero h1 { font-size: 3rem; }
}