/* ==========================================================================
   Prime Tower — web štýl
   Nadväzuje na PrimeKernel „blueprint" motív (navy pozadie, hairline mriežka),
   ale s vlastným radarovým akcentom: zelená (Tower · Ground · Radar).
   ========================================================================== */

:root {
    --bg:        #0a1826;
    --bg-2:      #0d1f30;
    --panel:     #0f2336;
    --panel-2:   #123049;
    --line:      rgba(126, 178, 219, 0.10);
    --line-strong: rgba(126, 178, 219, 0.20);

    --ink:       #e6eef6;
    --ink-soft:  #b7c8da;
    --muted:     #8ea6bd;

    --green:     #23e39a;   /* radarová zelená — Prime Tower */
    --green-2:   #0f9e6a;   /* hlbšia zelená */
    --amber:     #f2a83a;   /* „in development" pill */

    --radius:    14px;
    --wrap:      1120px;
    --ff-sans:   "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
    --ff-mono:   ui-monospace, "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

    --shadow:    0 18px 50px -24px rgba(0, 0, 0, 0.75);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0; font-family: var(--ff-sans); color: var(--ink); background: var(--bg);
    line-height: 1.6; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: hidden;
}

/* Blueprint pozadie */
.blueprint { position: fixed; inset: 0; z-index: -2;
    background: linear-gradient(180deg, #0b1a2b 0%, #081422 55%, #0a1826 100%); }
.blueprint::before { content: ""; position: absolute; inset: 0;
    background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 34px 34px; mask-image: radial-gradient(ellipse 120% 90% at 50% 0%, #000 45%, transparent 100%); }

/* ── Layout ──────────────────────────────────────────────────────────────── */
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.skip-link { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--green); color: #04140d;
    padding: 8px 14px; border-radius: 8px; font-weight: 700; text-decoration: none; }
.skip-link:focus { left: 12px; }

/* ── Hlavička ────────────────────────────────────────────────────────────── */
.site-header { position: sticky; top: 0; z-index: 40; backdrop-filter: blur(10px);
    background: rgba(9, 20, 33, 0.72); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; color: var(--ink); }
.brand-mark { display: inline-flex; gap: 5px; }
.brand-mark .dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.dot-green { background: var(--green); box-shadow: 0 0 10px var(--green); }
.brand-name { font-weight: 700; font-size: 1.18rem; letter-spacing: -0.02em; }

.site-nav { display: flex; align-items: center; gap: 26px; margin-left: auto; }
.site-nav a { color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; padding: 6px 0; position: relative; transition: color 0.15s; }
.site-nav a:hover { color: var(--ink); }
.site-nav a.active { color: #fff; }
.site-nav a.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px;
    background: linear-gradient(90deg, var(--green), var(--green-2)); border-radius: 2px; }
.nav-toggle { display: none; } .nav-burger { display: none; }
.parent-link { color: var(--muted) !important; font-size: 0.86rem; }
.parent-link:hover { color: var(--ink) !important; }

/* ── Sekcie / typografia ────────────────────────────────────────────────── */
section { padding: 76px 0; }
.section-tight { padding: 52px 0; }
.kicker { font-family: var(--ff-mono); font-size: 0.76rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--green); margin: 0 0 14px; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -0.025em; margin: 0 0 0.5em; text-wrap: balance; }
h1 { font-size: clamp(2.6rem, 6.5vw, 4.4rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.22rem; font-weight: 700; }
p  { color: var(--ink-soft); }
.lead { font-size: clamp(1.05rem, 1.8vw, 1.3rem); color: var(--ink-soft); max-width: 62ch; }
.muted { color: var(--muted); }
.section-head { max-width: 64ch; margin-bottom: 40px; }
.sec-label { font-family: var(--ff-mono); font-size: 0.74rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--green); display: flex; align-items: center; gap: 14px; margin: 0 0 30px; }
.sec-label::after { content: ""; flex: 1; height: 1px; background: var(--line-strong); }

/* ── Buttons ────────────────────────────────────────────────────────────── */
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }
.btn { display: inline-flex; align-items: center; gap: 9px; padding: 13px 24px; border-radius: 11px; font-weight: 650; font-size: 0.98rem;
    text-decoration: none; border: 1px solid transparent; cursor: pointer; transition: transform 0.12s, box-shadow 0.2s, background 0.2s; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: linear-gradient(180deg, #4bf5b4, var(--green-2)); color: #04140d; box-shadow: 0 10px 26px -12px var(--green); }
.btn-primary:hover { box-shadow: 0 14px 34px -12px var(--green); }
.btn-ghost { border-color: var(--line-strong); color: var(--ink); background: rgba(255,255,255,0.03); }
.btn-ghost:hover { border-color: var(--green); color: #fff; }
.btn[disabled], .btn.is-disabled { opacity: 0.6; pointer-events: none; }

/* ── Hero (radar panel) ─────────────────────────────────────────────────── */
.hero-wrap { padding: clamp(28px, 5vh, 56px) 0 0; }
.hero-panel {
    position: relative; overflow: hidden; border-radius: 20px;
    background: radial-gradient(120% 140% at 12% 20%, #0a2018 0%, #061109 55%, #05100c 100%);
    border: 1px solid rgba(35, 227, 154, 0.14);
    box-shadow: var(--shadow);
    padding: clamp(30px, 5vw, 60px);
    min-height: 440px;
    display: flex; align-items: center;
}
.hero-panel .hero-body { position: relative; z-index: 2; max-width: 640px; }
.badge-dev { display: inline-flex; align-items: center; gap: 8px; font-family: var(--ff-mono); font-size: 0.72rem; letter-spacing: 0.12em;
    text-transform: uppercase; color: #23160a; background: linear-gradient(180deg, #ffc063, var(--amber)); padding: 6px 13px; border-radius: 999px; font-weight: 700; }
.badge-dev .pulse { width: 7px; height: 7px; border-radius: 50%; background: #23160a; }
.hero-panel .kicker { color: var(--green); margin: 20px 0 12px; }
.hero-panel h1 { margin-bottom: 0.3em; }
.hero-panel h1 .k { color: var(--green); }
.hero-panel .lead { margin-bottom: 30px; color: #d4e2dd; }
.hero-meta { margin: 22px 0 0; font-family: var(--ff-mono); font-size: 0.8rem; color: #6f8c80; }

/* Radar sweep (čistý CSS) */
.radar { position: absolute; right: -8%; top: 50%; transform: translateY(-50%); width: 620px; height: 620px; max-width: 78%;
    pointer-events: none; z-index: 1; opacity: 0.9; }
.radar::before { content: ""; position: absolute; inset: 0; border-radius: 50%;
    background:
        repeating-radial-gradient(circle at 50% 50%, transparent 0 78px, rgba(35,227,154,0.13) 78px 79px);
    -webkit-mask: radial-gradient(circle at 50% 50%, #000 60%, transparent 100%);
            mask: radial-gradient(circle at 50% 50%, #000 60%, transparent 100%); }
.radar::after { content: ""; position: absolute; inset: 0; border-radius: 50%;
    background: conic-gradient(from 0deg, rgba(35,227,154,0.55), rgba(35,227,154,0.10) 40deg, transparent 80deg, transparent 360deg);
    -webkit-mask: radial-gradient(circle at 50% 50%, #000 60%, transparent 100%);
            mask: radial-gradient(circle at 50% 50%, #000 60%, transparent 100%);
    animation: sweep 6s linear infinite; }
.radar .cross { position: absolute; inset: 0; }
.radar .cross::before, .radar .cross::after { content: ""; position: absolute; background: rgba(35,227,154,0.10); }
.radar .cross::before { left: 50%; top: 12%; bottom: 12%; width: 1px; }
.radar .cross::after  { top: 50%; left: 12%; right: 12%; height: 1px; }
@keyframes sweep { to { transform: rotate(360deg); } }

/* ── Intro ──────────────────────────────────────────────────────────────── */
.intro-lead { font-size: clamp(1.25rem, 2.3vw, 1.7rem); line-height: 1.5; max-width: 30ch; color: var(--ink-soft); font-weight: 400; }
.intro-lead .b { color: #fff; font-weight: 700; }
.intro-lead { max-width: 62ch; }

/* ── „What's inside" karty ──────────────────────────────────────────────── */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.icard { position: relative; background: linear-gradient(180deg, var(--panel), var(--bg-2)); border: 1px solid var(--line-strong);
    border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); overflow: hidden; }
.icard::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--green); opacity: 0.0; transition: opacity 0.2s; }
.icard:hover::before { opacity: 0.9; }
.icard .ico { width: 44px; height: 44px; border-radius: 11px; display: inline-flex; align-items: center; justify-content: center; font-size: 22px;
    background: rgba(35, 227, 154, 0.12); border: 1px solid rgba(35, 227, 154, 0.22); margin-bottom: 16px; }
.icard h3 { font-size: 1.12rem; margin: 0 0 8px; }
.icard p { margin: 0; color: var(--muted); font-size: 0.96rem; }

/* ── How it plays (spec bloky) ──────────────────────────────────────────── */
.grid-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.spec { background: rgba(255,255,255,0.015); border: 1px solid var(--line); border-radius: 12px; padding: 26px; }
.spec h3 { font-size: 1.08rem; }
.spec-list { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 10px; }
.spec-list li { padding-left: 22px; position: relative; color: var(--ink-soft); font-size: 0.96rem; }
.spec-list li::before { content: "▸"; position: absolute; left: 0; color: var(--green); }

/* ── Screenshots ────────────────────────────────────────────────────────── */
.shots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.shot { aspect-ratio: 16 / 10; border: 1px dashed var(--line-strong); border-radius: 12px;
    background: linear-gradient(180deg, var(--panel), var(--bg-2)); display: flex; align-items: center; justify-content: center;
    text-align: center; padding: 16px; color: var(--muted); font-family: var(--ff-mono); font-size: 0.78rem; letter-spacing: 0.08em; }

/* ── CTA band ───────────────────────────────────────────────────────────── */
.cta-band { background: linear-gradient(180deg, var(--panel), var(--bg-2)); border: 1px solid var(--line-strong); border-radius: var(--radius);
    padding: 46px; text-align: center; box-shadow: var(--shadow); }
.cta-band h2 { margin-bottom: 10px; }
.cta-band .btn-row { justify-content: center; margin-top: 22px; }

/* ── Kontakt ────────────────────────────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: start; }
form.contact { display: grid; gap: 16px; }
.field { display: grid; gap: 6px; }
.field label { font-size: 0.86rem; color: var(--ink-soft); font-weight: 600; }
.field input, .field textarea { font-family: inherit; font-size: 1rem; color: var(--ink); background: rgba(255,255,255,0.03);
    border: 1px solid var(--line-strong); border-radius: 10px; padding: 12px 14px; transition: border-color 0.15s, box-shadow 0.15s; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(35,227,154,0.15); }
.field textarea { min-height: 150px; resize: vertical; }
.hp { position: absolute; left: -9999px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.alert { border-radius: 10px; padding: 14px 16px; font-size: 0.95rem; border: 1px solid; }
.alert-ok  { background: rgba(35,227,154,0.10); border-color: rgba(35,227,154,0.4); color: #c8ffe9; }
.alert-err { background: rgba(242,120,90,0.10); border-color: rgba(242,120,90,0.45); color: #ffd8cd; }
.contact-aside { background: linear-gradient(180deg, var(--panel), var(--bg-2)); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 28px; }
.contact-aside .mono { font-family: var(--ff-mono); color: var(--green); }
.contact-aside a { color: var(--green); text-decoration: none; }
.contact-aside a:hover { text-decoration: underline; }

/* ── Pätička ────────────────────────────────────────────────────────────── */
.site-footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 46px 0 30px; background: rgba(6,14,23,0.6); }
.footer-inner { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; align-items: flex-start; }
.foot-tag { color: var(--muted); font-size: 0.9rem; margin: 8px 0 0; }
.foot-links { display: flex; flex-wrap: wrap; gap: 20px; }
.foot-links a { color: var(--ink-soft); text-decoration: none; font-size: 0.92rem; }
.foot-links a:hover { color: var(--green); }
.foot-legal { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.85rem; }

/* ── Responzívne ────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .radar { opacity: 0.35; right: -30%; }
    .hero-panel { min-height: 400px; }
}
@media (max-width: 860px) {
    .grid-3, .grid-cards, .contact-grid, .form-row, .shots { grid-template-columns: 1fr; }
    .nav-burger { display: flex; flex-direction: column; gap: 5px; margin-left: auto; width: 42px; height: 42px;
        align-items: center; justify-content: center; border: 1px solid var(--line-strong); border-radius: 10px; cursor: pointer; }
    .nav-burger span { width: 20px; height: 2px; background: var(--ink); border-radius: 2px; }
    .site-nav { position: fixed; inset: 68px 0 auto 0; margin: 0; flex-direction: column; align-items: stretch; gap: 0;
        background: rgba(8,18,29,0.98); border-bottom: 1px solid var(--line-strong); max-height: 0; overflow: hidden; transition: max-height 0.28s ease; }
    .nav-toggle:checked ~ .site-nav { max-height: 420px; }
    .site-nav a { padding: 15px 24px; border-top: 1px solid var(--line); }
    .site-nav a.active::after { display: none; }
    section { padding: 56px 0; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; animation: none !important; transition: none !important; } }

/* ── Product hero (podstránky) ──────────────────────────────────────────── */
.page-hero { padding: clamp(60px, 11vh, 110px) 0 30px; }
.page-hero .kicker { color: var(--green); }
.feature-block { border-top: 1px solid var(--line); padding: 34px 0; }
.feature-block:first-of-type { border-top: 0; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
@media (max-width: 860px) { .grid-2 { grid-template-columns: 1fr; } }