/* ==========================================================================
   Nero Security – veřejný web
   Světlý editoriální styl: papír, inkoust a jeden signální akcent.
   Ostré hrany, výrazná typografie (Inter Tight + Instrument Serif).
   Animace se vypínají pro „omezit pohyb“ (prefers-reduced-motion).
   ========================================================================== */

:root {
    --paper: #f4f3ef;
    --paper-2: #eae8e1;
    --card: #ffffff;
    --ink: #111113;
    --ink-2: #2c2c30;
    --muted: #6d6b65;
    --rule: #d8d5cc;
    --signal: #ff6b2c;
    --signal-dark: #e8551a;
    --night-text: #f4f3ef;
    --night-muted: #9b9991;
    --night-rule: rgba(255, 255, 255, 0.14);

    --sans: 'Inter Tight', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
    --ease: cubic-bezier(0.2, 0.7, 0.1, 1);
    --wrap: 1240px;
    --top-h: 72px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--top-h) + 20px);
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--sans);
    font-size: 17px;
    line-height: 1.6;
    background: var(--paper);
    color: var(--ink);
    -webkit-font-smoothing: antialiased;
    overflow-x: clip;
}
body.sheet-open { overflow: hidden; }

img { max-width: 100%; display: block; }
a { color: inherit; }
em { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: -0.01em; }
::selection { background: var(--signal); color: var(--ink); }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }

.skip-link {
    position: absolute;
    left: 16px;
    top: -60px;
    z-index: 300;
    padding: 10px 16px;
    background: var(--ink);
    color: var(--paper);
    text-decoration: none;
}
.skip-link:focus { top: 12px; }

.label, .index {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
}

/* ---------- Tlačítka a odkazy ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px 24px;
    border: 1.5px solid transparent;
    border-radius: 2px;
    font: inherit;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.btn span[aria-hidden] { transition: transform 0.3s var(--ease); }
.btn:hover span[aria-hidden] { transform: translateX(4px); }
.btn-sm { padding: 10px 16px; font-size: 14px; }
.btn-block { width: 100%; }
.btn-ink { background: var(--ink); color: var(--paper); }
.btn-ink:hover { background: #000; }
.btn-line { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-line:hover { background: var(--ink); color: var(--paper); }
.btn-signal { background: var(--signal); color: var(--ink); }
.btn-signal:hover { background: var(--signal-dark); }
.btn:disabled { opacity: 0.6; cursor: wait; }

.arrow-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    text-decoration: none;
    background: linear-gradient(currentColor, currentColor) left bottom / 0 1.5px no-repeat;
    padding-bottom: 2px;
    transition: background-size 0.35s var(--ease);
}
.arrow-link:hover { background-size: 100% 1.5px; }

/* ---------- Horní lišta ---------- */
.topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--top-h);
    background: rgba(244, 243, 239, 0.94);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s, background 0.3s;
}
.topbar.is-scrolled { border-bottom-color: var(--rule); }
.topbar-inner { height: 100%; display: flex; align-items: center; gap: 32px; }

.logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); }
.nero-mark { width: 32px; height: 32px; flex: none; }
.nero-mark rect { fill: var(--ink); }
.nero-mark path { fill: none; stroke: var(--signal); stroke-width: 3; stroke-linecap: square; stroke-linejoin: miter; }
.logo-word { font-weight: 800; font-size: 18px; letter-spacing: -0.03em; }
.logo-word span { font-weight: 400; margin-left: 5px; color: var(--muted); }
.logo:hover .nero-mark path { stroke-dasharray: 60; animation: draw 0.9s var(--ease); }
@keyframes draw { from { stroke-dashoffset: 60; } to { stroke-dashoffset: 0; } }

.mainnav { display: flex; gap: 26px; margin: 0 auto; }
.mainnav a {
    position: relative;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    color: var(--ink-2);
    padding: 6px 0;
}
.mainnav a::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    background: var(--ink);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.35s var(--ease);
}
.mainnav a:hover::after, .mainnav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
.mainnav a[aria-current="page"] { color: var(--ink); font-weight: 600; }

.topbar-actions { display: flex; align-items: center; gap: 18px; }
.link-portal { font-size: 15px; font-weight: 500; text-decoration: none; color: var(--ink-2); }
.link-portal:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }

.menu-btn {
    display: none;
    align-items: center;
    gap: 10px;
    border: 0;
    background: none;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    color: var(--ink);
}
.menu-btn-icon { display: grid; gap: 5px; width: 22px; }
.menu-btn-icon i { display: block; height: 2px; background: currentColor; transition: transform 0.3s var(--ease); }
.menu-btn[aria-expanded="true"] .menu-btn-icon i:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .menu-btn-icon i:last-child { transform: translateY(-3.5px) rotate(-45deg); }

.sheet {
    position: fixed;
    inset: var(--top-h) 0 0;
    z-index: 90;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 24px 0 32px;
    background: var(--ink);
    color: var(--night-text);
    overflow-y: auto;
}
.sheet[hidden] { display: none; }
.sheet-nav { display: grid; }
.sheet-nav a {
    display: flex;
    align-items: baseline;
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px solid var(--night-rule);
    font-size: clamp(28px, 8vw, 40px);
    font-weight: 700;
    letter-spacing: -0.03em;
    text-decoration: none;
    animation: sheet-in 0.5s var(--ease) backwards;
}
.sheet-nav a:nth-child(2) { animation-delay: 0.04s; }
.sheet-nav a:nth-child(3) { animation-delay: 0.08s; }
.sheet-nav a:nth-child(4) { animation-delay: 0.12s; }
.sheet-nav a:nth-child(5) { animation-delay: 0.16s; }
.sheet-nav a:nth-child(6) { animation-delay: 0.2s; }
.sheet-nav small { font-size: 13px; font-weight: 500; color: var(--signal); letter-spacing: 0.08em; }
@keyframes sheet-in { from { opacity: 0; transform: translateY(18px); } }
.sheet-foot { display: grid; gap: 12px; margin-top: 28px; }
.sheet-foot a:not(.btn) { color: var(--night-muted); text-decoration: none; }

/* ---------- Najetí prvků ---------- */
[data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.8s var(--ease), transform 0.9s var(--ease);
    transition-delay: calc(var(--d, 0) * 90ms);
}
[data-reveal].in { opacity: 1; transform: none; }
.no-js [data-reveal] { opacity: 1; transform: none; }

/* Řádky nadpisu vyjíždějí zpod masky */
[data-lines] .line { display: block; overflow: hidden; padding: 0.06em 0 0.16em; margin: -0.06em 0 -0.16em; }
[data-lines] .line > span { display: inline-block; transform: translateY(110%); transition: transform 1.1s var(--ease); }
[data-lines] .line:nth-child(2) > span { transition-delay: 0.08s; }
[data-lines] .line:nth-child(3) > span { transition-delay: 0.16s; }
[data-lines].in .line > span, .no-js [data-lines] .line > span { transform: none; }

/* ---------- Úvod ---------- */
.hero { padding: 40px 0 80px; }
.hero-kicker {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--rule);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
}
.hero-clock { display: inline-flex; align-items: center; gap: 10px; font-variant-numeric: tabular-nums; }
.hero-clock time { color: var(--ink); }
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 0 rgba(255, 107, 44, 0.5); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 9px rgba(255, 107, 44, 0); } 100% { box-shadow: 0 0 0 0 rgba(255, 107, 44, 0); } }

.hero-title {
    margin: 36px 0 44px;
    font-size: clamp(52px, 10vw, 148px);
    font-weight: 700;
    line-height: 0.96;
    letter-spacing: -0.055em;
}
.hero-title em { letter-spacing: -0.03em; }

.hero-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 48px; align-items: end; }
.lead { font-size: clamp(18px, 1.6vw, 21px); line-height: 1.55; color: var(--ink-2); max-width: 560px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

/* Ukazatel aktuální směny */
.ticker {
    padding: 26px 28px 24px;
    background: var(--ink);
    color: var(--night-text);
    border-radius: 2px;
}
.ticker-head {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--night-muted);
}
.ticker-live { display: inline-flex; align-items: center; gap: 8px; color: var(--signal); }
.ticker-live i { width: 7px; height: 7px; border-radius: 50%; background: var(--signal); animation: blink 1.6s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0.25; } }
.ticker-name { margin-top: 18px; font-size: 34px; font-weight: 700; letter-spacing: -0.035em; }
.ticker-times { font-family: var(--serif); font-style: italic; font-size: 24px; color: var(--night-muted); }
.ticker-bar { position: relative; height: 6px; margin: 22px 0 12px; background: var(--night-rule); overflow: hidden; }
.ticker-bar span { position: absolute; inset: 0 auto 0 0; width: var(--p, 0%); background: var(--signal); transition: width 1s var(--ease); }
.ticker-foot { display: flex; justify-content: space-between; font-size: 14px; color: var(--night-muted); font-variant-numeric: tabular-nums; }

/* ---------- Fakta ---------- */
.facts { border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.facts-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.facts-grid > div { padding: 34px 28px 34px 0; display: grid; gap: 4px; }
.facts-grid > div + div { padding-left: 28px; border-left: 1px solid var(--rule); }
.facts strong { font-size: clamp(40px, 5vw, 64px); font-weight: 700; letter-spacing: -0.05em; line-height: 1; }
.facts span { color: var(--muted); font-size: 15px; }

/* ---------- Klienti ---------- */
.clients { padding: 34px 0; }
.clients-inner { display: flex; align-items: center; gap: 36px; flex-wrap: wrap; }
.clients-logos { display: flex; gap: 14px; flex: 1; flex-wrap: wrap; }
.client-logo {
    display: grid;
    place-items: center;
    height: 84px;
    padding: 16px 26px;
    background: var(--card);
    border: 1px solid var(--rule);
    border-radius: 2px;
    transition: border-color 0.3s, transform 0.4s var(--ease), opacity 0.8s var(--ease);
}
.client-logo img { height: 48px; width: auto; filter: grayscale(1); opacity: 0.7; transition: filter 0.4s, opacity 0.4s; }
.client-logo:hover { border-color: var(--ink); transform: translateY(-3px); }
.client-logo:hover img { filter: none; opacity: 1; }

/* ---------- Sekce ---------- */
.section { padding: 120px 0; }
.section-tight { padding: 80px 0; }
.section-head { display: grid; gap: 14px; margin-bottom: 56px; max-width: 820px; }
.section-head-row { display: flex; justify-content: space-between; align-items: flex-end; max-width: none; gap: 20px; flex-wrap: wrap; }
.h2 { font-size: clamp(38px, 5.6vw, 76px); font-weight: 700; letter-spacing: -0.045em; line-height: 0.98; }
.section-lead { color: var(--muted); font-size: 18px; max-width: 620px; }

/* Služby – rozbalovací seznam */
.svc-list { border-top: 1.5px solid var(--ink); }
.svc { border-bottom: 1px solid var(--rule); }
.svc summary {
    position: relative;
    display: grid;
    grid-template-columns: 70px minmax(0, 1fr) auto 40px;
    align-items: center;
    gap: 20px;
    padding: 28px 12px;
    list-style: none;
    cursor: pointer;
    isolation: isolate;
    transition: color 0.35s var(--ease);
}
.svc summary::-webkit-details-marker { display: none; }
.svc summary::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background: var(--ink);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.45s var(--ease);
}
.svc summary:hover { color: var(--paper); }
.svc summary:hover::before { transform: scaleY(1); }
.svc summary:hover .svc-num { color: var(--signal); }
.svc summary:hover .svc-tags { color: var(--night-muted); }
.svc-num { font-family: var(--serif); font-style: italic; font-size: 28px; color: var(--muted); transition: color 0.3s; }
.svc-title { font-size: clamp(22px, 2.6vw, 34px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.15; }
.svc-tags { font-size: 14px; color: var(--muted); text-align: right; transition: color 0.3s; }
.svc-plus { position: relative; width: 22px; height: 22px; justify-self: end; }
.svc-plus::before, .svc-plus::after {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 22px;
    height: 2px;
    background: currentColor;
    transition: transform 0.4s var(--ease);
}
.svc-plus::after { transform: rotate(90deg); }
.svc[open] .svc-plus::after { transform: rotate(0); }
.svc-body {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 40px;
    padding: 10px 12px 36px 102px;
    animation: svc-open 0.5s var(--ease);
}
@keyframes svc-open { from { opacity: 0; transform: translateY(-8px); } }
.svc-body p { color: var(--ink-2); font-size: 18px; }
.svc-body ul { list-style: none; display: grid; gap: 8px; }
.svc-body li { padding-left: 22px; position: relative; }
.svc-body li::before { content: ''; position: absolute; left: 0; top: 0.72em; width: 10px; height: 2px; background: var(--ink); }

/* Tmavá sekce */
.night { background: var(--ink); color: var(--night-text); }
.night .index { color: var(--night-muted); }
.night em { color: var(--signal); }

.steps { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); }
.steps li { position: relative; padding: 34px 26px 0 0; }
.steps li + li { padding-left: 26px; border-left: 1px solid var(--night-rule); }
.steps li::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 3px;
    background: var(--night-rule);
}
.steps li::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 3px;
    width: 100%;
    background: var(--signal);
    transform-origin: left;
    transform: scaleX(clamp(0, calc(var(--p, 0) * 4 - var(--n)), 1));
}
.step-num { display: block; font-family: var(--serif); font-style: italic; font-size: 64px; line-height: 1; color: var(--night-muted); margin-bottom: 26px; }
.steps h3 { font-size: 24px; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 10px; }
.steps p { color: var(--night-muted); font-size: 16px; }

/* Výrok */
.statement { padding: 110px 0; border-bottom: 1px solid var(--rule); }
.statement p {
    font-family: var(--serif);
    font-size: clamp(36px, 5.4vw, 74px);
    line-height: 1.08;
    letter-spacing: -0.02em;
    max-width: 1050px;
}
.statement mark {
    background: linear-gradient(var(--signal), var(--signal)) left 88% / 0 0.32em no-repeat;
    color: inherit;
    transition: background-size 1.2s var(--ease) 0.4s;
}
.statement .in mark { background-size: 100% 0.32em; }

/* ---------- Poptávka ---------- */
.inquiry { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 72px; align-items: start; }
.inquiry-intro { display: grid; gap: 18px; align-content: start; position: sticky; top: calc(var(--top-h) + 30px); }
.inquiry-points { list-style: none; display: grid; gap: 10px; margin: 8px 0 10px; border-top: 1.5px solid var(--ink); }
.inquiry-points li { display: flex; gap: 14px; align-items: center; padding: 12px 0 2px; font-weight: 600; }
.inquiry-points li::before { content: ''; width: 10px; height: 10px; background: var(--signal); flex: none; }
.form-panel { padding: 40px; background: var(--card); border: 1.5px solid var(--ink); box-shadow: 12px 12px 0 var(--signal); }
.form-panel h3 { font-size: 28px; letter-spacing: -0.03em; }
.form-panel > p { color: var(--muted); margin: 4px 0 24px; }
.field { display: grid; gap: 4px; margin-bottom: 18px; }
.field span { font-size: 13px; font-weight: 600; color: var(--muted); }
.field input {
    width: 100%;
    padding: 10px 0;
    border: 0;
    border-bottom: 1.5px solid var(--rule);
    background: transparent;
    font: inherit;
    color: var(--ink);
    border-radius: 0;
    transition: border-color 0.25s;
}
.field select, .field textarea {
    width: 100%;
    padding: 10px 0;
    border: 0;
    border-bottom: 1.5px solid var(--rule);
    border-radius: 0;
    background: transparent;
    font: inherit;
    color: var(--ink);
    transition: border-color 0.25s;
}
.field textarea { resize: vertical; min-height: 110px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-bottom-color: var(--ink); }
.field-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.feedback { display: none; margin-top: 14px; padding: 12px 14px; font-size: 15px; }
.feedback.ok { display: block; background: var(--signal); color: var(--ink); font-weight: 600; }
.feedback.err { display: block; background: #fde3de; color: #8a1c0c; }

.prose { max-width: 720px; margin: 0 auto 80px; font-size: 19px; line-height: 1.75; }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { font-size: 30px; letter-spacing: -0.03em; line-height: 1.2; margin-top: 1.8em; }
.prose h3 { font-size: 23px; letter-spacing: -0.02em; margin-top: 1.5em; }
.prose a { text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose blockquote { font-family: var(--serif); font-size: 26px; line-height: 1.35; padding-left: 22px; border-left: 3px solid var(--signal); }
.prose img { margin: 1.6em 0; }

/* ---------- Podstránky ---------- */
.page-hero { padding: 60px 0 50px; border-bottom: 1px solid var(--rule); }
.page-title { margin: 18px 0 26px; font-size: clamp(44px, 7.6vw, 112px); font-weight: 700; line-height: 0.95; letter-spacing: -0.05em; }

/* Sestavení log klientů – části loga najedou po zobrazení a po kliknutí znovu */
.logo-sz .sz-bar { transform-box: fill-box; transform-origin: left center; transform: scaleX(0); transition: transform 0.9s var(--ease) 0.25s; }
.logo-sz .sz-z { transform-box: fill-box; transform: translateX(-35%); opacity: 0; transition: transform 1s var(--ease) 0.4s, opacity 0.6s 0.4s; }
.logo-sz .sz-word { opacity: 0; transform: translateY(8px); transition: opacity 0.6s, transform 0.8s var(--ease); }
.logo-sz .sz-word-2 { transition-delay: 0.65s; }
.logo-sz .sz-word-1 { transition-delay: 0.8s; }
.logo-up .up-mark { transform-box: fill-box; transform-origin: 30% 70%; transform: scale(0.3) rotate(-30deg); opacity: 0; transition: transform 1.1s cubic-bezier(0.34, 1.56, 0.64, 1) 0.3s, opacity 0.5s 0.3s; }
.logo-up .up-letter { opacity: 0; transform: translateY(6px); transition: opacity 0.4s, transform 0.6s var(--ease); transition-delay: calc(0.75s + var(--l) * 45ms); }
.in .client-logo-svg .sz-bar,
.in .client-logo-svg .sz-z,
.in .client-logo-svg .sz-word,
.in .client-logo-svg .up-mark,
.in .client-logo-svg .up-letter,
.no-js .client-logo-svg * { transform: none; opacity: 1; }
.replaying .client-logo-svg * { transition-duration: 0s !important; transition-delay: 0s !important; }

/* Značka loga se při pohybu myši posune víc než text – hloubka */
.in .client-logo-svg .logo-mark { transform: translate(calc(var(--px, 0) * 14px), calc(var(--py, 0) * 10px)); transition: transform 0.3s var(--ease); }

/* Reference – jen loga v pohybu */
.logos-stage { padding: 50px 0 0; overflow: clip; }
.logos-title { font-size: clamp(56px, 12vw, 180px); font-weight: 700; letter-spacing: -0.06em; line-height: 0.9; }
.logos-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 56px; padding: 60px 0 110px; }
.logo-float { position: relative; perspective: 1200px; }
.logo-float.in { animation: logo-float 7s ease-in-out infinite; animation-delay: calc(1.1s + var(--i) * 1.7s); }
.logo-float:nth-child(2) { margin-top: 70px; }
@keyframes logo-float {
    0%, 100% { transform: translateY(0) rotate(-0.6deg); }
    50% { transform: translateY(-18px) rotate(0.6deg); }
}
.logo-tile {
    --rx: 0deg;
    --ry: 0deg;
    position: relative;
    z-index: 1;
    display: grid;
    place-items: center;
    width: 100%;
    aspect-ratio: 4 / 3;
    padding: 0;
    border: 1.5px solid var(--ink);
    border-radius: 2px;
    background: var(--card);
    cursor: pointer;
    overflow: hidden;
    transform: rotateX(var(--rx)) rotateY(var(--ry));
    transition: transform 0.7s var(--ease), box-shadow 0.5s var(--ease);
    box-shadow: 14px 14px 0 var(--ink);
}
.logo-tile.is-tilting { transition: transform 0.12s linear, box-shadow 0.5s var(--ease); }
.logo-tile:hover { box-shadow: 20px 20px 0 var(--brand); }
.logo-tile:focus-visible { outline: 3px solid var(--brand); outline-offset: 8px; }
.logo-tile-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(420px circle at var(--gx, 50%) var(--gy, 50%), color-mix(in srgb, var(--brand) 13%, transparent), transparent 60%);
    opacity: 0;
    transition: opacity 0.4s;
}
.logo-tile:hover .logo-tile-glow { opacity: 1; }
.logo-tile-art {
    position: relative;
    width: 70%;
    max-width: 440px;
    transform: translate(calc(var(--px, 0) * -18px), calc(var(--py, 0) * -14px));
    transition: transform 0.3s var(--ease);
}
.logo-float:nth-child(2) .logo-tile-art { width: 48%; max-width: 300px; }
.logo-shadow {
    position: absolute;
    left: 12%;
    right: 12%;
    bottom: -46px;
    height: 18px;
    border-radius: 50%;
    background: radial-gradient(closest-side, rgba(17, 17, 19, 0.22), transparent);
    animation: logo-shadow 7s ease-in-out infinite;
    animation-delay: calc(1.1s + var(--i) * 1.7s);
}
@keyframes logo-shadow { 50% { transform: scaleX(0.82); opacity: 0.6; } }

/* Na najetí se pruhy SŽ „rozjedou“ a značka ÚP poskočí */
.logo-tile:hover .logo-sz .sz-bar { animation: sz-rail 1.2s var(--ease); }
.logo-tile:hover .logo-sz .sz-z { animation: sz-rail 1.2s var(--ease) 0.08s; }
@keyframes sz-rail { 35% { transform: translateX(7%); } }
.logo-tile:hover .logo-up .up-mark { animation: up-bounce 1s cubic-bezier(0.34, 1.56, 0.64, 1); }
@keyframes up-bounce { 30% { transform: translateY(-8%) rotate(-6deg) scale(1.06); } }

.logo-float.keep-visible { opacity: 1 !important; transform: none !important; }

/* Řeka log pod scénou */
.logos-river {
    padding: 30px 0;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    background: var(--paper-2);
    -webkit-mask: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
    mask: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.logos-river-track { display: flex; gap: 56px; width: max-content; animation: river 46s linear infinite; }
.logos-river:hover .logos-river-track { animation-play-state: paused; }
.logos-river img {
    height: 72px;
    width: auto;
    padding: 12px 20px;
    background: var(--card);
    border: 1px solid var(--rule);
    filter: grayscale(1);
    opacity: 0.6;
    transition: filter 0.4s, opacity 0.4s;
}
.logos-river img:hover { filter: none; opacity: 1; }
@keyframes river { to { transform: translateX(-50%); } }

/* Kontakt */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 72px; }
.contact-main { display: grid; gap: 14px; align-content: start; }
.contact-big {
    font-size: clamp(30px, 4.4vw, 60px);
    font-weight: 700;
    letter-spacing: -0.045em;
    line-height: 1.05;
    text-decoration: none;
    word-break: break-word;
    background: linear-gradient(var(--signal), var(--signal)) left 90% / 0 0.28em no-repeat;
    transition: background-size 0.5s var(--ease);
    justify-self: start;
}
.contact-big:hover { background-size: 100% 0.28em; }
.contact-note { color: var(--muted); }
.arrow-link-light { color: var(--night-text); }
.company-data { display: grid; gap: 18px; align-content: start; }
.company-data dl { border-top: 1.5px solid var(--ink); }
.company-data dl div { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 14px; padding: 15px 0; border-bottom: 1px solid var(--rule); }
.company-data dt { font-size: 13px; font-weight: 600; color: var(--muted); }
.company-data dd { font-weight: 600; }
.copy-btn {
    display: inline-grid;
    place-items: center;
    width: 30px;
    height: 30px;
    margin-left: 8px;
    vertical-align: middle;
    padding: 0;
    border: 1px solid var(--rule);
    background: var(--card);
    color: var(--muted);
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.copy-btn svg { width: 15px; height: 15px; }
.copy-btn .i-check { display: none; }
.copy-btn:hover { border-color: var(--ink); color: var(--ink); }
.copy-btn.done { background: var(--signal); border-color: var(--ink); color: var(--ink); }
.copy-btn.done .i-copy { display: none; }
.copy-btn.done .i-check { display: grid; animation: copied 0.35s var(--ease); }
@keyframes copied { from { transform: scale(0.4); opacity: 0; } }
.company-data .btn { justify-self: start; }

/* Výzva */
.signal-band { background: var(--signal); padding: 90px 0; }
.signal-inner { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; flex-wrap: wrap; }
.signal-inner h2 { font-size: clamp(38px, 5.6vw, 80px); font-weight: 700; letter-spacing: -0.05em; line-height: 0.98; max-width: 800px; }
.signal-actions { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; }
.signal-contact { font-weight: 700; font-size: 18px; text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 2px; }

/* ---------- Patička ---------- */
.footer { background: var(--ink); color: var(--night-text); padding: 80px 0 30px; }
.footer-top { display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; flex-wrap: wrap; padding-bottom: 50px; border-bottom: 1px solid var(--night-rule); }
.footer-claim { font-size: clamp(32px, 4vw, 54px); font-weight: 700; letter-spacing: -0.045em; line-height: 1.02; }
.footer-claim em { color: var(--signal); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 32px; padding: 50px 0; }
.logo-invert { color: var(--night-text); }
.logo-invert .nero-mark rect { fill: var(--signal); }
.logo-invert .nero-mark path { stroke: var(--ink); }
.logo-invert .logo-word span { color: var(--night-muted); }
.footer-note { color: var(--night-muted); margin-top: 16px; max-width: 320px; font-size: 15px; }
.footer h4 { font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--night-muted); margin-bottom: 14px; }
.footer ul { list-style: none; display: grid; gap: 8px; font-size: 15px; }
.footer ul a { text-decoration: none; }
.footer ul a:hover { color: var(--signal); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 24px; border-top: 1px solid var(--night-rule); font-size: 13px; color: var(--night-muted); }

/* ---------- Responzivita ---------- */
@media (max-width: 1100px) {
    .mainnav, .link-portal { display: none; }
    .menu-btn { display: inline-flex; }
    .topbar-actions { margin-left: auto; }
    .svc summary { grid-template-columns: 54px minmax(0, 1fr) 30px; }
    .svc-tags { display: none; }
    .svc-body { padding-left: 86px; }
}

@media (max-width: 900px) {
    .hero-grid, .inquiry, .contact-grid, .logos-grid { grid-template-columns: minmax(0, 1fr); }
    .inquiry { gap: 40px; }
    .inquiry-intro { position: static; }
    .logo-float:nth-child(2) { margin-top: 0; }
    .hero-grid { gap: 32px; }
    .steps { grid-template-columns: 1fr 1fr; row-gap: 40px; }
    .steps li:nth-child(3) { padding-left: 0; border-left: 0; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .svc-body { grid-template-columns: 1fr; gap: 16px; }
}

@media (max-width: 640px) {
    body { font-size: 16px; }
    .wrap { padding: 0 16px; }
    .topbar-actions .btn { display: none; }
    .hero { padding: 26px 0 60px; }
    .hero-kicker { flex-direction: column; gap: 6px; }
    .hero-title { margin: 26px 0 30px; }
    .facts-grid { grid-template-columns: 1fr; }
    .facts-grid > div, .facts-grid > div + div { padding: 22px 0; border-left: 0; }
    .facts-grid > div + div { border-top: 1px solid var(--rule); }
    .client-logo { height: 70px; padding: 12px 16px; }
    .client-logo img { height: 38px; }
    .section { padding: 80px 0; }
    .section-tight { padding: 56px 0; }
    .svc summary { grid-template-columns: 40px minmax(0, 1fr) 26px; gap: 12px; padding: 22px 4px; }
    .svc-num { font-size: 22px; }
    .svc-body { padding: 0 4px 28px 52px; }
    .steps { grid-template-columns: 1fr; }
    .steps li, .steps li + li { padding-left: 0; border-left: 0; }
    .form-panel { padding: 26px 20px; box-shadow: 8px 8px 0 var(--signal); }
    .logos-grid { gap: 40px; padding: 40px 0 80px; }
    .field-pair { grid-template-columns: 1fr; gap: 0; }
    .logo-tile { box-shadow: 8px 8px 0 var(--ink); }
    .company-data dl div { grid-template-columns: 1fr; gap: 2px; }
    .footer-grid { grid-template-columns: 1fr; }
    .signal-band { padding: 64px 0; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        transition-delay: 0s !important;
        scroll-behavior: auto !important;
    }
    [data-reveal] { opacity: 1; transform: none; }
    [data-lines] .line > span { transform: none; }
    .client-logo-svg * { transform: none !important; opacity: 1 !important; }
    .logos-river-track { animation: none; flex-wrap: wrap; width: auto; justify-content: center; }
}