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

:root {
    --bg: #09090b;
    --surface: #111114;
    --surface-2: #17171b;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.16);
    --text: #fafafa;
    --muted: #a1a1aa;
    --faint: #71717a;
    --accent: #a78bfa;
    --accent-2: #60a5fa;
    --radius: 20px;
    --container: 1120px;
    --sans: "Geist", system-ui, -apple-system, sans-serif;
    --mono: "Geist Mono", ui-monospace, monospace;
    --serif: "Instrument Serif", Georgia, serif;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 88px;
}

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

::selection {
    background: rgba(167, 139, 250, 0.35);
}

a {
    color: inherit;
}

em {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    background: linear-gradient(120deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    padding-right: 0.06em;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* Pozadí */
.bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.bg::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 64px 64px;
    -webkit-mask-image: radial-gradient(ellipse 80% 55% at 50% 0%, black, transparent 75%);
    mask-image: radial-gradient(ellipse 80% 55% at 50% 0%, black, transparent 75%);
}

.bg::after {
    content: "";
    position: absolute;
    inset: 0;
    opacity: 0.06;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(110px);
}

.glow-1 {
    top: -260px;
    left: 50%;
    width: 900px;
    height: 520px;
    margin-left: -450px;
    background: radial-gradient(closest-side, rgba(139, 92, 246, 0.45), transparent);
    animation: breathe 12s ease-in-out infinite alternate;
}

.glow-2 {
    top: 40vh;
    right: -200px;
    width: 520px;
    height: 520px;
    background: radial-gradient(closest-side, rgba(59, 130, 246, 0.18), transparent);
    animation: breathe 16s ease-in-out infinite alternate-reverse;
}

/* Tlačítka */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    font: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    color: #09090b;
    text-decoration: none;
    background: var(--text);
    border: 1px solid var(--text);
    border-radius: 999px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s, color 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px -10px rgba(167, 139, 250, 0.7);
}

.btn-ghost {
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--border-strong);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: none;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.btn:focus-visible,
.nav a:focus-visible,
.hero-socials a:focus-visible,
.hero-socials button:focus-visible,
.project:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

/* Navigace */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    padding: 14px 0;
    transition: background 0.3s, border-color 0.3s, padding 0.3s;
    border-bottom: 1px solid transparent;
}

.nav.scrolled {
    padding: 10px 0;
    background: rgba(9, 9, 11, 0.72);
    border-bottom-color: var(--border);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.nav-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    text-decoration: none;
}

.logo-mark {
    display: grid;
    place-items: center;
    width: 32px;
    height: 32px;
    font-family: var(--mono);
    font-size: 0.8rem;
    color: #09090b;
    background: linear-gradient(135deg, #fff, #c4b5fd);
    border-radius: 9px;
}

.nav-links {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 999px;
}

.nav-links a {
    padding: 6px 14px;
    font-size: 0.875rem;
    color: var(--muted);
    text-decoration: none;
    border-radius: 999px;
    transition: color 0.2s, background 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
    background: rgba(255, 255, 255, 0.07);
}

/* Úvod */
.hero {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
    gap: 56px;
    min-height: 100vh;
    min-height: 100svh;
    padding-top: 120px;
    padding-bottom: 64px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 6px 14px 6px 10px;
    font-size: 0.8rem;
    color: var(--muted);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 999px;
}

.dot {
    position: relative;
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
}

.dot::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: #22c55e;
    animation: ping 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

.hero-title {
    margin-top: 24px;
    font-size: clamp(2.4rem, 5vw, 4.1rem);
    font-weight: 600;
    line-height: 1.05;
    text-wrap: balance;
    letter-spacing: -0.04em;
}

.hero-title em {
    font-size: 1.08em;
    letter-spacing: -0.01em;
}

.hero-sub {
    margin-top: 24px;
    max-width: 540px;
    font-size: 1.075rem;
    color: var(--muted);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 36px;
}

.hero-socials {
    display: flex;
    gap: 6px;
    margin-top: 40px;
}

.hero-socials a,
.hero-socials button {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    font-size: 1.05rem;
    color: var(--faint);
    text-decoration: none;
    background: none;
    border: 1px solid transparent;
    border-radius: 12px;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.hero-socials a:hover,
.hero-socials button:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border);
}

/* Okno editoru */
.editor {
    position: relative;
    background: linear-gradient(180deg, rgba(23, 23, 27, 0.9), rgba(17, 17, 20, 0.9));
    border: 1px solid var(--border-strong);
    border-radius: 18px;
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.4),
        0 40px 80px -20px rgba(0, 0, 0, 0.7),
        0 0 120px -30px rgba(139, 92, 246, 0.45);
    transform: perspective(1400px) rotateY(-8deg) rotateX(4deg);
    transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.editor:hover {
    transform: perspective(1400px) rotateY(0) rotateX(0);
}

.editor-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}

.editor-bar span {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: #3f3f46;
}

.editor-bar span:nth-child(1) { background: #ff5f57; }
.editor-bar span:nth-child(2) { background: #febc2e; }
.editor-bar span:nth-child(3) { background: #28c840; }

.editor-bar p {
    margin-left: 10px;
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--faint);
}

.editor-code {
    padding: 20px 22px 24px;
    font-family: var(--mono);
    font-size: 0.85rem;
    line-height: 1.85;
    color: #e4e4e7;
    overflow-x: auto;
}

.c-num { display: inline-block; width: 26px; color: #52525b; user-select: none; }
.c-key { color: #c084fc; }
.c-var { color: #93c5fd; }
.c-str { color: #86efac; }
.c-bool { color: #fdba74; }
.c-fn { color: #fcd34d; }

.caret {
    display: inline-block;
    width: 8px;
    height: 1.1em;
    margin-left: 2px;
    vertical-align: text-bottom;
    background: var(--accent);
    animation: blink 1.1s steps(1) infinite;
}

/* Technologie */
.stack {
    padding-bottom: 40px;
    text-align: center;
}

.stack-label {
    font-size: 0.8rem;
    color: var(--faint);
    letter-spacing: 0.04em;
}

.stack-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 28px;
    margin-top: 18px;
    list-style: none;
}

.stack-list li {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--muted);
    transition: color 0.2s;
}

.stack-list li:hover {
    color: var(--text);
}

.stack-list i {
    font-size: 1.1rem;
}

/* Sekce */
.section {
    padding-top: 112px;
}

.section-head {
    margin-bottom: 40px;
}

.eyebrow {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--accent);
    letter-spacing: 0.02em;
}

h2 {
    margin-top: 10px;
    font-size: clamp(1.9rem, 3.6vw, 2.75rem);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.035em;
}

.section-sub {
    margin-top: 10px;
    color: var(--muted);
}

/* Světlo, které sleduje myš */
.spotlight {
    position: relative;
    isolation: isolate;
}

.spotlight::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    border-radius: inherit;
    background: radial-gradient(420px circle at var(--x, 50%) var(--y, 50%), rgba(167, 139, 250, 0.12), transparent 60%);
    opacity: 0;
    transition: opacity 0.3s;
}

.spotlight:hover::before {
    opacity: 1;
}

/* Projekty */
.projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr));
    gap: 20px;
}

.project {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    color: inherit;
    text-decoration: none;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color 0.3s, transform 0.3s;
}

a.project:hover {
    border-color: var(--border-strong);
    transform: translateY(-4px);
}

.project-preview {
    position: relative;
    margin: 14px 14px 0;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.project-preview .browser-bar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1;
    display: flex;
    gap: 6px;
    padding: 10px 12px;
    background: rgba(9, 9, 11, 0.55);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.project-preview .browser-bar span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
}

.project-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

a.project:hover .project-preview img,
a.project:hover .placeholder {
    transform: scale(1.04);
}

/* Náhled, když projekt nemá obrázek */
.placeholder {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    background:
        radial-gradient(circle at 25% 15%, hsla(var(--hue), 90%, 68%, 0.55), transparent 55%),
        radial-gradient(circle at 85% 95%, hsla(calc(var(--hue) - 40), 90%, 62%, 0.4), transparent 55%),
        linear-gradient(160deg, hsl(var(--hue), 30%, 12%), #0d0d10);
    transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.placeholder::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
    background-size: 28px 28px;
    -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
}

.placeholder span {
    position: relative;
    font-size: clamp(1.6rem, 3vw, 2.3rem);
    font-weight: 600;
    letter-spacing: -0.04em;
    color: rgba(255, 255, 255, 0.92);
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.35);
}

.project-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 22px 24px 24px;
}

.project-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.project-name {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.project-link {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    font-size: 0.8rem;
    color: var(--muted);
    border: 1px solid var(--border);
    border-radius: 50%;
    transition: color 0.3s, background 0.3s, transform 0.3s;
}

.project-link i {
    transform: rotate(-45deg);
}

a.project:hover .project-link {
    color: #09090b;
    background: var(--text);
    transform: rotate(45deg);
}

.project-private {
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--faint);
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
}

.project-desc {
    margin-top: 8px;
    color: var(--muted);
    font-size: 0.95rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: auto;
    padding-top: 18px;
}

.tag {
    padding: 3px 10px;
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--muted);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 999px;
}

/* Služby */
.services {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.service {
    padding: 28px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color 0.3s;
}

.service:hover {
    border-color: var(--border-strong);
}

.service-icon {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    font-size: 1.05rem;
    color: var(--accent);
    background: rgba(167, 139, 250, 0.1);
    border: 1px solid rgba(167, 139, 250, 0.25);
    border-radius: 12px;
}

.service h3 {
    margin-top: 22px;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.service p {
    margin-top: 8px;
    font-size: 0.95rem;
    color: var(--muted);
}

/* O mně */
.about {
    display: grid;
    grid-template-columns: 280px 1fr;
    align-items: center;
    gap: 64px;
}

.about-photo {
    position: relative;
}

.about-photo::before {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: 28px;
    background: linear-gradient(135deg, var(--accent), transparent 50%, var(--accent-2));
    opacity: 0.6;
}

.about-photo img {
    position: relative;
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 27px;
    border: 6px solid var(--bg);
}

.about-text p:not(.eyebrow) {
    margin-top: 18px;
    max-width: 620px;
    font-size: 1.05rem;
    color: var(--muted);
}

/* Kontakt */
#kontakt {
    padding-top: 112px;
}

.cta {
    overflow: hidden;
    padding: 72px 32px;
    text-align: center;
    background:
        radial-gradient(ellipse 70% 80% at 50% 0%, rgba(139, 92, 246, 0.22), transparent 70%),
        var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: 28px;
}

.cta h2 {
    font-size: clamp(2rem, 4.4vw, 3.4rem);
}

.cta > p:not(.eyebrow) {
    margin-top: 16px;
    color: var(--muted);
    font-size: 1.05rem;
}

.cta-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 32px;
}

/* Patička */
.footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-top: 80px;
    padding-top: 28px;
    padding-bottom: 36px;
    font-size: 0.875rem;
    color: var(--faint);
    border-top: 1px solid var(--border);
}

.footer a {
    text-decoration: none;
    transition: color 0.2s;
}

.footer a:hover {
    color: var(--text);
}

/* Upozornění */
.toast {
    position: fixed;
    left: 50%;
    bottom: 28px;
    z-index: 60;
    padding: 10px 18px;
    font-size: 0.875rem;
    background: var(--surface-2);
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    opacity: 0;
    transform: translate(-50%, 10px);
    pointer-events: none;
    transition: opacity 0.25s, transform 0.25s;
}

.toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

/* Postupné objevování při scrollu */
.js .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
    transition-delay: var(--delay, 0s);
}

.js .reveal.visible {
    opacity: 1;
    transform: none;
}

.js .editor.reveal.visible {
    transform: perspective(1400px) rotateY(-8deg) rotateX(4deg);
}

.js .editor.reveal.visible:hover {
    transform: perspective(1400px) rotateY(0) rotateX(0);
}

@keyframes ping {
    75%, 100% { transform: scale(2.4); opacity: 0; }
}

@keyframes blink {
    50% { opacity: 0; }
}

@keyframes breathe {
    to { transform: translateY(40px) scale(1.1); opacity: 0.75; }
}

/* Tablet a mobil */
@media (max-width: 960px) {
    .hero {
        grid-template-columns: 1fr;
        min-height: auto;
        padding-top: 140px;
        gap: 48px;
    }

    .editor,
    .js .editor.reveal.visible {
        transform: none;
    }

    .services {
        grid-template-columns: 1fr;
    }

    .about {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .about-photo {
        max-width: 200px;
    }
}

@media (max-width: 640px) {
    .container,
    .nav-inner {
        padding: 0 16px;
    }

    .nav-links {
        display: none;
    }

    .hero {
        padding-top: 112px;
    }

    .editor-code {
        font-size: 0.75rem;
    }

    .section,
    #kontakt {
        padding-top: 88px;
    }

    .cta {
        padding: 56px 20px;
    }

    .footer {
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }

    .js .reveal {
        opacity: 1;
        transform: none;
    }
}