:root {
    --color-bg: #030303;
    --color-text: #f3f4f6;
    --color-text-muted: #888888;
    --color-accent: #ffffff;

    --color-glass: rgba(12, 12, 12, 0.65);
    --color-glass-border: rgba(255, 255, 255, 0.06);
    --color-glass-hover: rgba(25, 25, 25, 0.8);

    --font-main: 'Space Grotesk', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    background-color: #030303;
    height: 100%;
    scroll-behavior: smooth;
}

body {
    background-color: #030303;
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    overscroll-behavior: none;
    -ms-overflow-style: none;
    scrollbar-width: none;
    color: var(--color-text);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar {
    display: none;
}

body.is-loading {
    overflow: hidden !important;
    height: 100vh;
}

/* --- POPUP ODESLÁNÍ FORMULÁŘE --- */
.popup-notification {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    z-index: 100000;
    transform: translateY(-100%);
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    padding-top: 2rem;
}

.popup-notification.show {
    transform: translateY(0);
    pointer-events: auto;
}

.popup-content {
    background: var(--color-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--color-glass-border);
    padding: 1.5rem 3rem;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.success-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(0, 255, 102, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #00ff66;
    box-shadow: 0 0 20px rgba(0, 255, 102, 0.4), inset 0 0 10px rgba(0, 255, 102, 0.2);
}

.success-icon svg {
    width: 24px;
    height: 24px;
}

.popup-content p {
    font-size: 1.1rem;
    color: var(--color-text);
    margin: 0;
    text-align: center;
}

.btn-popup {
    background: transparent;
    color: var(--color-text-muted);
    border: 1px solid var(--color-text-muted);
    padding: 0.5rem 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-popup:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text);
    border-color: var(--color-text);
}

/* --- KONEC POPUP --- */

#intro-sequence {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: #030303;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.intro-content {
    text-align: center;
    width: 100%;
    max-width: 600px;
    padding: 0 2rem;
}

.intro-logo {
    font-family: var(--font-main);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    letter-spacing: 0.15em;
    margin-bottom: 0.5rem;
    color: #ffffff;
    font-weight: 700;
    text-shadow: 0 0 25px rgba(255, 255, 255, 0.6);
    opacity: 0;
}

.intro-title-text {
    font-family: var(--font-mono);
    font-size: clamp(0.7rem, 2vw, 0.85rem);
    color: #aaaaaa;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 3rem;
    opacity: 0;
}

.divider {
    margin: 0 0.5rem;
}

.loader-wrap {
    width: 100%;
    height: 2px;
    background: rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    opacity: 0;
}

.loader-bar {
    width: 0%;
    height: 100%;
    background: var(--color-accent);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.9);
}

.loader-percentage {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #ffffff;
    margin-top: 1rem;
    text-align: right;
    opacity: 0;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

#webgl-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
    outline: none;
    border: none;
    display: block;
}

#hud-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.hud-metric {
    position: absolute;
    color: #444444;
    font-family: var(--font-mono);
    font-size: 0.45rem;
    letter-spacing: 0.15em;
    transform: scale(var(--scale, 1)) rotate(var(--rot, 0deg));
    transition: transform 0.1s ease-out;
}

.hud-metric span {
    color: #aaaaaa;
    font-weight: 700;
}

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem 5vw;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    background: linear-gradient(to bottom, rgba(3, 3, 3, 0.9) 0%, rgba(3, 3, 3, 0) 100%);
    pointer-events: auto;
    opacity: 0;
}

.logo {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    text-decoration: none;
}

.mobile-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 101;
    width: 32px;
    height: 32px;
    align-items: center;
    justify-content: center;
}

.grid-icon {
    position: relative;
    width: 22px;
    height: 22px;
}

.grid-icon span {
    position: absolute;
    width: 9px;
    height: 9px;
    background-color: var(--color-accent);
    border-radius: 3px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.grid-icon span:nth-child(1) {
    top: 0;
    left: 0;
}

.grid-icon span:nth-child(2) {
    top: 0;
    right: 0;
}

.grid-icon span:nth-child(3) {
    bottom: 0;
    left: 0;
}

.grid-icon span:nth-child(4) {
    bottom: 0;
    right: 0;
}

.mobile-toggle.active .grid-icon span:nth-child(1) {
    width: 28px;
    height: 2px;
    top: 10px;
    left: -3px;
    transform: rotate(45deg);
    border-radius: 1px;
}

.mobile-toggle.active .grid-icon span:nth-child(4) {
    width: 28px;
    height: 2px;
    bottom: 10px;
    right: -3px;
    transform: rotate(-45deg);
    border-radius: 1px;
}

.mobile-toggle.active .grid-icon span:nth-child(2),
.mobile-toggle.active .grid-icon span:nth-child(3) {
    opacity: 0;
    transform: scale(0);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-items {
    display: flex;
    gap: 2.5rem;
}

.nav-socials {
    display: flex;
    gap: 1.2rem;
    align-items: center;
    border-left: 2px solid rgba(255, 255, 255, 0.4);
    padding-left: 1.5rem;
}

.nav-links .nav-link {
    color: var(--color-text-muted);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: var(--transition-fast);
}

.nav-links .nav-link:hover,
.nav-links .nav-link.active {
    color: var(--color-accent);
    font-weight: 700;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.4);
}

.nav-socials a {
    color: var(--color-text-muted);
    transition: var(--transition-fast);
    display: flex;
}

.nav-socials a:hover {
    color: var(--color-accent);
    transform: translateY(-2px);
}

.ui-layer {
    position: relative;
    z-index: 10;
    pointer-events: none;
    flex: 1 0 auto;
    display: flex;
    flex-direction: column;
}

section {
    min-height: 100vh;
    padding: 8rem 5vw;
    display: flex;
    flex-direction: column;
    justify-content: center;
    pointer-events: none;
}

.hero-section {
    position: relative;
    align-items: flex-start;
}

.content-block,
.projects-container {
    pointer-events: auto;
    width: 100%;
}

.content-block {
    max-width: 650px;
}

.hero-block {
    max-width: 950px;
}

.hero-shape {
    width: 40px;
    height: 2px;
    background: var(--color-accent);
    opacity: 0.5;
    transform: skew(-30deg);
    margin-bottom: 2rem;
}

.text-gradient {
    background: linear-gradient(90deg, #ffffff 0%, #777777 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.section-tag {
    display: block;
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

h1 {
    font-size: clamp(3.5rem, 8vw, 6.5rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 500;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

p {
    font-size: clamp(1rem, 1.2vw, 1.15rem);
    color: var(--color-text-muted);
    font-weight: 300;
    max-width: 800px;
}

.section-header p {
    color: #cccccc;
}

.centered-hero {
    align-items: center;
    text-align: center;
}

.centered-hero .hero-block {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.centered-hero .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
    max-width: 750px;
}

.centered-hero .hero-actions {
    justify-content: center;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 1.5vw, 1.25rem);
    max-width: 650px;
    margin-bottom: 3rem;
    color: var(--color-text-muted);
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 10;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-bg);
    padding: 1rem 2.5rem;
    text-decoration: none;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: var(--transition-fast);
}

.btn-primary:hover {
    background: #dddddd;
    transform: translateY(-3px);
}

.btn-secondary {
    background: var(--color-glass);
    color: var(--color-accent);
    border: 1px solid var(--color-glass-border);
    padding: 1rem 2.5rem;
    text-decoration: none;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition-fast);
}

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

.scroll-indicator {
    position: absolute;
    bottom: 5vh;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    opacity: 1;
    transition: opacity 0.1s;
}

.mouse {
    width: 20px;
    height: 32px;
    border: 2px solid var(--color-text-muted);
    border-radius: 12px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: scrollWheel 2s infinite;
}

@keyframes scrollWheel {
    0% {
        transform: translate(-50%, 0);
        opacity: 1;
    }

    100% {
        transform: translate(-50%, 12px);
        opacity: 0;
    }
}

.section-header {
    margin-bottom: 4rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    pointer-events: auto;
}

@media (min-width: 1200px) {
    .services-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (min-width: 1024px) {
    .projects-3-col {
        grid-template-columns: repeat(3, 1fr);
    }
}

.glass-panel {
    background: var(--color-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--color-glass-border);
    padding: 2.5rem;
    border-radius: 4px;
    transition: var(--transition-fast);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.glass-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #ffffff 0%, #777777 100%);
    opacity: 0.15;
    transition: var(--transition-fast);
}

.project-card:hover {
    background: var(--color-glass-hover);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.glass-panel:hover::before {
    opacity: 1;
}

.project-meta {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.glass-panel h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.glass-panel p {
    font-size: 0.95rem;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tags span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.25rem 0.6rem;
    border: 1px solid var(--color-glass-border);
    border-radius: 2px;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.about-content {
    max-width: 800px;
    position: relative;
    padding: 3rem;
    margin-left: -3rem;
    margin-top: -3rem;
    z-index: 1;
}

.about-content::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.7) 0%, transparent 70%);
    z-index: -1;
    pointer-events: none;
}

.about-content p {
    font-size: 1.15rem;
    color: #d1d5db;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.about-content strong {
    color: var(--color-accent);
    font-weight: 500;
}

.contact-section {
    position: relative;
    background: linear-gradient(to bottom, transparent 0%, rgba(3, 3, 3, 0.9) 20%, #030303 40%, #030303 100%);
    padding-top: 10rem;
    min-height: auto;
    padding-bottom: 4rem;
    margin-top: -5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.relative-z {
    position: relative;
    z-index: 2;
}

.form-wrapper {
    background: transparent;
    padding: 0;
    max-width: 850px;
    margin: 0 auto;
}

form {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.full-width {
    grid-column: 1 / -1;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

label {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    text-transform: uppercase;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

input,
textarea {
    background: transparent;
    border: none;
    border-bottom: 2px solid rgba(255, 255, 255, 0.4);
    color: var(--color-accent);
    font-family: var(--font-main);
    font-size: 1.2rem;
    padding: 0.75rem 0;
    transition: var(--transition-fast);
    resize: none;
}

input:focus,
textarea:focus {
    outline: none;
    border-bottom-color: var(--color-accent);
}

input::placeholder,
textarea::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

.submit-btn {
    background: var(--color-accent);
    color: var(--color-bg);
    border: none;
    padding: 1.2rem 3rem;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: var(--transition-fast);
    align-self: flex-start;
    margin-top: 1rem;
}

.submit-btn:hover {
    background: #dddddd;
    transform: translateY(-3px);
}

.submit-btn:active {
    transform: scale(0.98);
}

.copyrights {
    flex-shrink: 0;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-muted);
    padding: 2rem 0;
    letter-spacing: 0.05em;
    position: relative;
    z-index: 2;
    background-color: #030303;
    pointer-events: auto;
}

.copyrights p {
    font-size: inherit;
    max-width: none;
    margin: 0 auto;
}

.footer-socials {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.footer-socials a {
    color: var(--color-text-muted);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-socials a:hover {
    color: var(--color-accent);
    transform: translateY(-3px);
}

#scroll-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 50px;
    height: 50px;
    background: var(--color-glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--color-glass-border);
    border-radius: 4px;
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 99;
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

#scroll-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

#scroll-to-top:hover {
    background: var(--color-glass-hover);
    border-color: rgba(255, 255, 255, 0.3);
}

#scroll-to-top svg {
    width: 24px;
    height: 24px;
}

@media (max-width: 992px) {
    .nav-links {
        flex-direction: column;
        justify-content: center;
        align-items: center;
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: rgba(3, 3, 3, 0.98);
        transition: right 0.3s ease;
        gap: 0;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-items {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
        margin-bottom: 3rem;
    }

    .nav-socials {
        border-left: none;
        padding-left: 0;
        gap: 2rem;
        border-top: 2px solid rgba(255, 255, 255, 0.4);
        padding-top: 2rem;
    }

    .nav-links .nav-link {
        font-size: 1.5rem;
    }

    .mobile-toggle {
        display: flex;
    }

    .mobile-toggle.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-toggle.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}

@media (max-width: 768px) {
    .scroll-indicator {
        display: none;
    }

    section {
        padding: 4rem 5vw;
        min-height: auto;
    }

    .hero-section {
        min-height: 100vh;
        padding-top: 100px;
        justify-content: center;
    }

    h1 {
        font-size: clamp(2.5rem, 10vw, 4rem);
    }

    .form-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    #scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

/* Toto je jednořádkový komentář */