:root {
    --bg-page: #f4f6fa;
    --hex-b: linear-gradient(145deg, #ffffff, #cbd5e1);
    --hex-i: linear-gradient(145deg, #e2e8f0, #ffffff);
    --text-main: #0f172a;
    --text-muted: #64748b;
    --cyan-accent: #0284c7;
    --cyan-glow: rgba(2, 132, 199, 0.35);
    --cyan-neon-hover: #00aaff;
    --green-neon: #00ff88;
    --alan-blue: #00e5ff;
    --alan-pink: #ff00c8;
    --flat-hex: polygon(25% 0%, 75% 0%, 100% 50%, 75% 100%, 25% 100%, 0% 50%);
}

body.dark-theme {
    --bg-page: #010409;
    --hex-b: linear-gradient(145deg, #00f0ff, #0284c7);
    --hex-i: linear-gradient(145deg, #050b14, #0b1329);
    --text-main: #ffffff;
    --text-muted: #94a3b8;
    --cyan-accent: #00f0ff;
    --cyan-glow: drop-shadow(0 0 30px rgba(0, 240, 255, 0.7));
    --cyan-neon-hover: #00f0ff;
}

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

body { background-color: var(--bg-page); color: var(--text-main); font-family: 'Rajdhani', sans-serif; overflow-x: hidden; min-height: 100vh; transition: background-color 0.6s ease; }

#cyberCanvas { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }

.main-header { 
    position: fixed; top: 20px; left: 20px; width: auto; height: 100vh; padding: 0; display: flex; flex-direction: column; 
    justify-content: flex-start; align-items: center; gap: 25px; z-index: 100; pointer-events: none; 
}
.main-header > * { pointer-events: auto; }
.hamburger { display: none; font-size: 32px; color: var(--cyan-accent); cursor: pointer; text-shadow: 0 0 10px var(--cyan-accent); }

.nav-links { 
    display: flex; flex-direction: column; align-items: center; gap: 12px; padding-bottom: 30px; 
}

.nav-hex.hex-logo { width: 230px; height: 200px; perspective: 1200px; }

.nav-hex.hex-logo .hex-inner { 
    position: relative; 
    padding: 0 !important; 
    background: transparent !important; 
    box-shadow: none !important;
    clip-path: none !important; 
    transform-style: preserve-3d;
    transition: transform 1.2s cubic-bezier(0.68, -0.55, 0.27, 1.55); 
}

.nav-hex.hex-logo.is-flipped .hex-inner { transform: rotateY(180deg); }

.flip-card-front, .flip-card-back {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    backface-visibility: hidden; 
    -webkit-backface-visibility: hidden; 
    clip-path: var(--flat-hex); 
    overflow: hidden;
}

.flip-card-front { 
    background: #f0f2f5; 
    transform: rotateY(0deg) scale(1.02);
    z-index: 2; 
}

.flip-card-back { 
    background: #ffffff; 
    transform: rotateY(180deg) scale(1.02);
    z-index: 1; 
}

.nav-hex.hex-logo.is-flipped .flip-card-front { opacity: 0; transition: opacity 0.1s 0.3s; }
.nav-hex.hex-logo:not(.is-flipped) .flip-card-front { opacity: 1; transition: opacity 0.1s 0.3s; }

.nav-hex.hex-logo .hex-img { 
    position: absolute; top: 0; left: 0;
    width: 100%; height: 100%; 
    object-fit: contain !important; 
    transform: scale(0.82);
    clip-path: none !important; 
    transition: opacity 0.3s ease;
}

.logo-dark, .logo-dark-back { opacity: 0; pointer-events: none; }
.logo-light, .logo-light-back { opacity: 1; }
.logo-light { mix-blend-mode: multiply; }

body.dark-theme .logo-light,
body.dark-theme .logo-light-back { opacity: 0 !important; visibility: hidden !important; }

body.dark-theme .logo-dark,
body.dark-theme .logo-dark-back { opacity: 1 !important; visibility: visible !important; z-index: 10; }

body.dark-theme .nav-hex.hex-logo .hex-inner {
    background: transparent !important;
    box-shadow: none !important;
}

body.dark-theme .flip-card-front,
body.dark-theme .flip-card-back { 
    background: #010409 !important; 
    box-shadow: none !important;
}

body.dark-theme .nav-hex.hex-logo .hex-border {
    background: linear-gradient(145deg, var(--cyan-accent), var(--alan-blue)) !important;
    box-shadow: 0 0 15px var(--cyan-glow) !important;
}

body.dark-theme .logo-dark-back { filter: none !important; }
body.dark-theme .logo-dark { filter: drop-shadow(0 0 15px rgba(0, 229, 255, 0.4)); }

.nav-hex { width: 100px; height: 86px; clip-path: var(--flat-hex); background: var(--hex-b); display: flex; justify-content: center; align-items: center; text-decoration: none; color: var(--text-main); filter: drop-shadow(0 5px 15px var(--cyan-glow)); transition: 0.3s; }
.nav-hex:hover { filter: drop-shadow(0 0 20px var(--cyan-neon-hover)); }
.nav-hex:hover .hex-border { background: var(--cyan-neon-hover); }
.nav-hex .hex-border { width: 100%; height: 100%; clip-path: var(--flat-hex); background: var(--hex-i); padding: 2px; transition: 0.3s; }

.nav-hex .hex-inner { 
    width: 100%; height: 100%; clip-path: var(--flat-hex); 
    background: linear-gradient(145deg, #ffffff, #e0e5ec) !important; 
    box-shadow: inset 2px 2px 5px rgba(255, 255, 255, 0.9), inset -2px -2px 8px rgba(0, 0, 0, 0.08) !important;
    display: flex; justify-content: center; align-items: center; font-family: 'Orbitron', sans-serif; font-size: 10px; font-weight: 700; 
}
body.dark-theme .nav-hex .hex-inner {
    background: linear-gradient(145deg, #081120, #02050a) !important;
    box-shadow: inset 1px 1px 5px rgba(0, 240, 255, 0.1), inset -2px -2px 8px rgba(0, 0, 0, 0.9) !important;
}

.lang-hex { width: 45px; height: 39px; margin-left: 5px; clip-path: var(--flat-hex); background: var(--hex-b); display: flex; justify-content: center; align-items: center; cursor: pointer; transition: 0.3s; }
.lang-hex:hover { filter: drop-shadow(0 0 10px var(--cyan-neon-hover)); }
.lang-hex .hex-border { width: 100%; height: 100%; clip-path: var(--flat-hex); background: var(--hex-i); padding: 1px; transition: 0.3s; }
.lang-hex .hex-inner { width: 100%; height: 100%; clip-path: var(--flat-hex); background: var(--bg-page); display: flex; justify-content: center; align-items: center; padding: 0; }
.lang-hex img { width: 100%; height: 100%; object-fit: cover; clip-path: var(--flat-hex); opacity: 0.6; transition: 0.3s; filter: grayscale(50%); }
.lang-hex:hover img { opacity: 1; filter: grayscale(0%); transform: scale(1.1); }
.lang-hex.active img { opacity: 1; filter: grayscale(0%); }
.lang-hex.active .hex-border { background: var(--cyan-accent); }

.sys-toggle-hex { cursor: pointer; }
.sys-toggle-hex .hex-inner { flex-direction: column; gap: 4px; }
.env-text { color: var(--cyan-accent); font-size: 9px; letter-spacing: 1px; text-shadow: 0 0 8px var(--cyan-accent); }
.toggle-track { width: 32px; height: 16px; background: rgba(150,150,150,0.2); border-radius: 8px; position: relative; border: 1px solid var(--cyan-accent); box-shadow: 0 0 6px var(--cyan-accent); }
.toggle-thumb { width: 10px; height: 10px; background: var(--cyan-accent); border-radius: 50%; position: absolute; top: 2px; left: 2px; transition: left 0.4s; box-shadow: 0 0 8px var(--cyan-accent); }
.sys-toggle-hex.active .toggle-thumb { left: 18px; }

.hex-border { width: 100%; height: 100%; clip-path: var(--flat-hex); background: var(--hex-i); padding: 3px; transition: 0.3s; }

.hex-inner { 
    width: 100%; height: 100%; clip-path: var(--flat-hex); 
    background: linear-gradient(145deg, #ffffff, #c2cedc) !important; 
    box-shadow: inset 3px 3px 12px rgba(255,255,255,1), inset -4px -4px 15px rgba(0,0,0,0.15) !important; 
    display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: 10px; 
    transition: background 0.6s ease, box-shadow 0.6s ease;
}

body.dark-theme .hex-inner {
    background: linear-gradient(145deg, #060d1f, #010308) !important;
    box-shadow: inset 2px 2px 10px rgba(0, 240, 255, 0.05), inset -3px -3px 12px rgba(0,0,0,0.9) !important;
}

.constellation-container { position: relative; max-width: 1500px; width: 100%; height: 1100px; margin: 130px auto 0; }
.hex-node { position: absolute; clip-path: var(--flat-hex); background: var(--hex-b); display: flex; justify-content: center; align-items: center; filter: drop-shadow(0 10px 20px var(--cyan-glow)); cursor: pointer; transition: 0.3s; }
.hex-node:hover { filter: drop-shadow(0 0 30px var(--cyan-neon-hover)); z-index: 20; }
.hex-node:hover .hex-border { background: var(--cyan-neon-hover); }

.node-center-core { width: 680px; height: 588px; top: 80px; left: 50%; transform: translateX(-50%); z-index: 5; }
.core-border { background: linear-gradient(145deg, var(--cyan-accent), #003366); }
.node-center-core.neon-green-pulse .core-border { background: var(--alan-blue) !important; }
.node-center-core.neon-green-pulse { filter: drop-shadow(0 0 40px rgba(0, 229, 255, 0.8)) !important; }

.node-left-video { width: 280px; height: 242px; top: 250px; left: 2%; }
.node-right-video { width: 280px; height: 242px; top: 250px; right: 2%; }
.node-img-1 { width: 220px; height: 190px; top: 40px; left: 16%; }
.node-img-2 { width: 220px; height: 190px; top: 40px; right: 16%; }

.node-arc-1 { width: 200px; height: 173px; bottom: 60px; left: 12%; }
.node-arc-2 { width: 200px; height: 173px; bottom: -20px; left: 32%; }
.node-arc-3 { width: 200px; height: 173px; bottom: -20px; right: 32%; }
.node-arc-4 { width: 200px; height: 173px; bottom: 60px; right: 12%; }

.content-section { max-width: 1300px; margin: 60px auto; padding: 0 20px; position: relative; z-index: 10; }
.section-title { font-family: 'Orbitron', sans-serif; font-size: 26px; color: var(--cyan-accent); text-align: center; margin-bottom: 40px; letter-spacing: 2px; text-shadow: 0 0 12px var(--cyan-accent); }

.stable-hex-grid { display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; }
.stable-hex { width: 260px; height: 225px; clip-path: var(--flat-hex); background: var(--hex-b); filter: drop-shadow(0 5px 20px var(--cyan-glow)); transition: 0.3s; cursor: pointer; display: flex; position: relative; }
.stable-hex:hover { filter: drop-shadow(0 0 25px var(--cyan-neon-hover)); }
.stable-hex:hover .hex-border { background: var(--cyan-neon-hover); }

.slider-wrapper { display: flex; align-items: center; justify-content: center; gap: 20px; width: 100%; position: relative; }
.slider-btn { background: transparent; border: 1px solid var(--cyan-accent); color: var(--cyan-accent); width: 50px; height: 50px; border-radius: 50%; font-size: 20px; cursor: pointer; transition: 0.3s; display: flex; justify-content: center; align-items: center; box-shadow: 0 0 10px var(--cyan-accent); }
.slider-btn:hover { background: var(--cyan-accent); color: var(--bg-page); box-shadow: 0 0 20px var(--cyan-accent); }

.slider-viewport { width: 840px; overflow: hidden; }
.slider-track { display: flex; gap: 30px; transition: transform 0.5s ease-in-out; }
.portfolio-hex { flex: 0 0 260px; }

.upgrade-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 25px;
    padding: 60px 20px;
    text-align: center;
    position: relative;
    z-index: 10;
}

.loading-hex-wrap {
    animation: pulseGlow 1.5s infinite alternate;
}

@keyframes pulseGlow {
    0% { filter: drop-shadow(0 0 10px var(--cyan-glow)); transform: scale(1); }
    100% { filter: drop-shadow(0 0 25px var(--cyan-neon-hover)); transform: scale(1.05); }
}

.upgrade-text h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 20px;
    color: var(--cyan-accent);
    letter-spacing: 3px;
    text-shadow: 0 0 10px var(--cyan-accent);
    margin-bottom: 8px;
}

.upgrade-text p {
    font-family: 'Rajdhani', sans-serif;
    font-size: 16px;
    color: var(--text-muted);
    letter-spacing: 1px;
    text-transform: uppercase;
}

body.dark-theme .upgrade-text h3 {
    color: var(--cyan-accent);
    text-shadow: 0 0 15px rgba(0, 240, 255, 0.8);
}

.honeycomb-layout { 
    display: flex; justify-content: center; gap: 10px; margin-top: 30px; 
    margin-bottom: 110px !important; 
}
.small-hex { width: 180px; height: 156px; }
.offset-down { transform: translateY(83px); }

.video-inner, .image-inner { padding: 0 !important; position: relative; }
.hex-video, .hex-img { width: 100%; height: 100%; object-fit: cover; clip-path: var(--flat-hex); filter: brightness(1.1); transition: 0.3s; }
.hex-node:hover .hex-video, .stable-hex:hover .hex-video, .hex-node:hover .hex-img, .stable-hex:hover .hex-img { transform: scale(1.05); }

.cam-overlay { position: absolute; bottom: 10%; left: 50%; transform: translateX(-50%); background: rgba(0,0,0,0.85); color: var(--cyan-accent); font-family: 'Orbitron', sans-serif; font-size: 10px; letter-spacing: 1px; padding: 4px 10px; border: 1px solid var(--cyan-accent); border-radius: 2px; text-wrap: nowrap; text-shadow: 0 0 5px var(--cyan-accent); }
.core-overlay { font-size: 16px; bottom: 12%; padding: 8px 20px; border-width: 2px; }

.icon { font-size: 28px; margin-bottom: 8px; transition: 0.3s; }
h3 { font-family: 'Orbitron', sans-serif; font-size: 15px; margin-bottom: 8px; color: var(--text-main); }
h4 { font-family: 'Orbitron', sans-serif; font-size: 12px; }
p { font-size: 12px; color: var(--text-muted); line-height: 1.4; }

.node-arc-1 .icon, .node-arc-2 .icon, .node-arc-3 .icon, .node-arc-4 .icon {
    color: var(--cyan-accent); filter: drop-shadow(0 0 8px var(--cyan-accent));
}

#services .stable-hex:nth-child(1) .icon { color: var(--alan-blue); filter: drop-shadow(0 0 8px var(--alan-blue)); }
#services .stable-hex:nth-child(2) .icon { color: var(--alan-pink); filter: drop-shadow(0 0 8px var(--alan-pink)); }
#services .stable-hex:nth-child(3) .icon { color: var(--alan-blue); filter: drop-shadow(0 0 8px var(--alan-blue)); }

#hardware-section .small-hex:nth-child(1) .icon { color: var(--alan-blue); filter: drop-shadow(0 0 8px var(--alan-blue)); } 
#hardware-section .small-hex:nth-child(2) .icon { color: var(--alan-pink); filter: drop-shadow(0 0 8px var(--alan-pink)); } 
#hardware-section .small-hex:nth-child(3) .icon { color: var(--alan-blue); filter: drop-shadow(0 0 8px var(--alan-blue)); } 
#hardware-section .small-hex:nth-child(4) .icon { color: var(--alan-pink); filter: drop-shadow(0 0 8px var(--alan-pink)); } 

#supported-projects .portfolio-hex:nth-child(1) .icon { color: var(--alan-pink); filter: drop-shadow(0 0 8px var(--alan-pink)); } 
#supported-projects .portfolio-hex:nth-child(2) .icon { color: var(--alan-blue); filter: drop-shadow(0 0 8px var(--alan-blue)); } 
#supported-projects .portfolio-hex:nth-child(3) .icon { color: var(--alan-pink); filter: drop-shadow(0 0 8px var(--alan-pink)); } 

#kontakt .stable-hex:nth-child(1) .icon { color: var(--alan-blue); filter: drop-shadow(0 0 8px var(--alan-blue)); }
#kontakt .stable-hex:nth-child(3) .icon { color: var(--alan-blue); filter: drop-shadow(0 0 8px var(--alan-blue)); }

#kontakt .stable-hex.core-border .icon { color: var(--alan-pink); filter: drop-shadow(0 0 8px var(--alan-pink)); }
#kontakt .stable-hex.core-border h3 { color: var(--alan-pink) !important; }

.stable-hex-grid { position: relative; z-index: 1; }
.stable-hex-grid::before {
    content: ''; position: absolute; top: 50%; left: -10%; right: -10%; height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan-accent), transparent);
    box-shadow: 0 0 10px var(--cyan-accent); opacity: 0.3; z-index: -1;
}

.honeycomb-layout { position: relative; z-index: 1; }
.honeycomb-layout::before {
    content: ''; position: absolute; top: 38%; left: -5%; right: -5%; height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan-accent), transparent);
    box-shadow: 0 0 10px var(--cyan-accent); opacity: 0.3; z-index: -1;
}

.stable-hex::before {
    content: ''; position: absolute; top: -30px; left: 50%; transform: translateX(-50%);
    width: 2px; height: 30px;
    background: linear-gradient(180deg, transparent, var(--cyan-accent));
    opacity: 0.4; z-index: -1;
}

body.dark-theme .stable-hex-grid::before,
body.dark-theme .honeycomb-layout::before,
body.dark-theme .stable-hex::before {
    opacity: 0.7; 
}

@media (min-width: 1201px) {
    .main-header {
        overflow-y: auto; overflow-x: hidden; scrollbar-width: none; 
    }
    .main-header::-webkit-scrollbar { display: none; }
    body { padding-left: 230px; }
    .constellation-container { margin: 60px auto 0; }
}

@media (max-width: 1200px) {
    .main-header { 
        flex-direction: row; width: 100%; height: auto; left: 0; padding: 0 40px; 
        justify-content: space-between; overflow-y: visible;
    }
    
    /* Zmenšenie loga na mobile */
    .nav-hex.hex-logo { 
        width: 130px; 
        height: 113px; 
    }
    
    body { padding-left: 0; }
    .hamburger { display: block; }
    
    .nav-links { 
        position: absolute; 
        top: 70px; 
        right: 40px; 
        flex-direction: column; align-items: flex-end; 
        background: rgba(3, 7, 18, 0.95); padding: 25px; border: 1px solid var(--cyan-accent); 
        border-radius: 15px; box-shadow: 0 10px 30px rgba(0,0,0,0.8); opacity: 0; pointer-events: none; transition: 0.3s; 
        max-height: calc(100vh - 90px); overflow-y: auto; 
    }
    .nav-links.show { opacity: 1; pointer-events: auto; }
    
    .constellation-container { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; height: auto; margin-top: 150px; }
    .hex-node { position: relative !important; top: auto !important; bottom: auto !important; left: auto !important; right: auto !important; transform: none !important; }
    .node-center-core { order: -1; width: 90vw; height: calc(90vw * 0.866); max-width: 680px; max-height: 588px; }
    .slider-viewport { width: 260px; }
}

.signal-form-wrapper {
    max-width: 750px;
    margin: 40px auto 0;
    padding: 35px;
    background: var(--hex-i);
    border: 1px solid var(--cyan-accent);
    box-shadow: 0 0 30px var(--cyan-glow);
    border-radius: 12px;
    position: relative;
    z-index: 20;
    animation: slideDownForm 0.4s ease-out;
}

@keyframes slideDownForm {
    from { opacity: 0; transform: translateY(-15px); }
    to { opacity: 1; transform: translateY(0); }
}

.signal-form-box h3 {
    font-family: 'Orbitron', sans-serif;
    color: var(--cyan-accent);
    text-align: center;
    margin-bottom: 25px;
    letter-spacing: 2px;
    text-shadow: 0 0 10px var(--cyan-accent);
    font-size: 18px;
}

.signal-form-box .form-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.signal-form-box label {
    font-family: 'Orbitron', sans-serif;
    font-size: 11px;
    color: var(--text-main);
    letter-spacing: 1px;
}

.signal-form-box input[type="text"],
.signal-form-box input[type="email"],
.signal-form-box textarea {
    width: 100%;
    padding: 12px 15px;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--cyan-accent);
    color: var(--text-main);
    font-family: 'Rajdhani', sans-serif;
    font-size: 16px;
    border-radius: 6px;
    outline: none;
    transition: 0.3s;
}

.signal-form-box input:focus,
.signal-form-box textarea:focus {
    box-shadow: 0 0 15px var(--cyan-accent);
    border-color: var(--alan-blue, #00e5ff);
}

.checkbox-group {
    display: flex;
    gap: 25px;
    flex-wrap: wrap;
    margin-top: 5px;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    font-family: 'Rajdhani', sans-serif;
    font-weight: 600;
    color: var(--text-main);
}

.checkbox-group input[type="checkbox"] {
    accent-color: var(--cyan-accent);
    width: 16px;
    height: 16px;
}