/* =========================================
   VARIABLES & SETUP
========================================= */
:root {
    --primary: #c29b62; /* Zlatá/Medená farba */
    --primary-dark: #a17f4b;
    --dark: #121212;
    --dark-surface: #1e1e1e;
    --light: #f9f9f9;
    --gray: #888888;
    --text-main: #333333;
    --text-light: #ffffff;
    --glass-bg: rgba(30, 30, 30, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html, body {
    overflow-x: hidden;
    width: 100%;
}

body {
    background-color: var(--light);
    color: var(--text-main);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 100px 0;
}

.bg-dark {
    background-color: var(--dark);
    color: var(--text-light);
}

/* =========================================
   TYPOGRAPHY & UTILITIES
========================================= */
h1, h2, h3, h4 {
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
    position: relative;
    display: inline-block;
    margin-bottom: 2rem;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--primary);
}

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

/* =========================================
   BUTTONS
========================================= */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(194, 155, 98, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(194, 155, 98, 0.4);
}

.btn-outline {
    background-color: transparent;
    border-color: white;
    color: white;
}

.btn-outline:hover {
    background-color: white;
    color: var(--dark);
    transform: translateY(-3px);
}

.btn-large {
    padding: 15px 35px;
    font-size: 1.1rem;
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

/* =========================================
   HEADER & NAVIGATION
========================================= */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    padding: 20px 0;
    background: transparent;
}

#header.scrolled {
    background: rgba(18, 18, 18, 0.95);
    backdrop-filter: blur(10px);
    padding: 10px 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

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

.logo {
    font-size: 2rem;
    font-weight: 800;
    color: white;
    letter-spacing: 1px;
}

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

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition);
}

.nav-links a:not(.btn):hover {
    color: var(--primary);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 30px;
    height: 3px;
    background-color: white;
    transition: var(--transition);
    border-radius: 2px;
}

/* =========================================
   HERO SECTION
========================================= */
#hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    overflow: hidden;
}

.hero-video-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.4) 100%);
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease forwards;
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.hero-content h1 span {
    color: var(--primary);
    display: block;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* =========================================
   FEATURES SECTION
========================================= */
.features-grid {
    display: flex;
    flex-direction: column;
    gap: 60px;
    margin-top: 50px;
}

.feature-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.feature-img {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.feature-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.feature-card:hover .feature-img img {
    transform: scale(1.05);
}

.feature-text h3 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.feature-text p {
    font-size: 1.1rem;
    color: var(--gray);
}

/* =========================================
   GALLERY SECTION
========================================= */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 50px;
}

.gallery-item {
    border-radius: 15px;
    overflow: hidden;
    height: 300px;
    position: relative;
    cursor: pointer;
}

.gallery-item.tall {
    grid-row: span 2;
    height: calc(600px + 20px);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.5), transparent);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item:hover::after {
    opacity: 1;
}

/* =========================================
   CONTACT SECTION
========================================= */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 30px;
    padding: 60px;
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    color: white;
    box-shadow: 0 30px 60px rgba(0,0,0,0.2);
    position: relative;
    overflow: hidden;
}

/* Background element for glassmorphism */
#kontakt {
    background: var(--dark);
    position: relative;
    overflow: hidden;
}
#kontakt::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: var(--primary);
    border-radius: 50%;
    filter: blur(100px);
    top: -100px;
    right: -100px;
    opacity: 0.2;
    z-index: 0;
}

.glass-panel { z-index: 1; }

.contact-info h2 {
    color: var(--primary);
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.contact-info p {
    color: #cccccc;
    margin-bottom: 2rem;
}

.contact-details {
    list-style: none;
}

.contact-details li {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.contact-details strong {
    color: var(--primary);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: #cccccc;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    color: white;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

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

.form-response {
    margin-top: 15px;
    text-align: center;
    font-weight: 500;
}

/* =========================================
   FOOTER
========================================= */
footer {
    background-color: #0a0a0a;
    color: #666;
    text-align: center;
    padding: 30px 0;
}

/* =========================================
   LIGHTBOX MODAL
========================================= */
.lightbox-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    padding-top: 50px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.92);
    justify-content: center;
    align-items: center;
}

.lightbox-modal.active {
    display: flex;
}

.lightbox-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 90vh;
    animation: zoomIn 0.3s;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
    object-fit: contain;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 40px;
    color: #f1f1f1;
    font-size: 50px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
    z-index: 2001;
}

.lightbox-close:hover,
.lightbox-close:focus {
    color: var(--primary);
    text-decoration: none;
    cursor: pointer;
}

@keyframes zoomIn {
    from {transform:scale(0.8); opacity: 0;}
    to {transform:scale(1); opacity: 1;}
}

/* =========================================
   ANIMATIONS
========================================= */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* =========================================
   STOCK TABLE
========================================= */
.stock-table-wrapper {
    overflow-x: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    background: white;
}

.stock-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
    text-align: left;
}

.stock-table th, .stock-table td {
    padding: 18px 20px;
    border-bottom: 1px solid #eeeeee;
}

.stock-table th {
    background-color: var(--dark);
    color: white;
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.stock-table tbody tr:hover {
    background-color: #f8f8f8;
}

.stock-badge {
    background-color: var(--primary);
    color: white;
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
}

.stock-table td strong {
    color: var(--primary-dark);
}

.table-separator td {
    background-color: #f1f1f1;
    text-align: center;
    color: var(--dark);
    font-size: 1.1rem;
    padding: 15px;
}

/* =========================================
   RESPONSIVE DESIGN
========================================= */
@media (max-width: 992px) {
    .feature-card {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .feature-card.reverse .feature-text {
        order: 2;
    }
    .feature-card.reverse .feature-img {
        order: 1;
    }
    .glass-panel {
        grid-template-columns: 1fr;
        padding: 40px 30px;
    }
    h2 { font-size: 2rem; }
    .hero-content h1 { font-size: 3rem; }
}

@media (max-width: 768px) {
    #header {
        background: rgba(18, 18, 18, 0.98);
        padding: 15px 0;
        box-shadow: 0 4px 20px rgba(0,0,0,0.5);
    }
    
    .hamburger { 
        display: flex;
        position: absolute;
        right: 20px;
        top: 50%;
        transform: translateY(-50%);
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: var(--dark-surface);
        flex-direction: column;
        justify-content: center;
        transition: var(--transition);
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    }
    
    .nav-links.active { right: 0; }
    
    .nav-links li { margin: 15px 0; }
    
    .hamburger.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    .hero-content h1 { font-size: 2.2rem; }
    .hero-buttons { flex-direction: column; }
    .gallery-item.tall { grid-row: auto; height: 300px; }
}