/* ================================================================
   DESIGN TOKENY – jediné místo, kde se mění barvy a písma webu.
   ================================================================ */
:root{
  --color-primary:#1A2F4C;
  --color-primary-dark:#0F2036;
  --color-secondary:#4A5568;
  --color-accent:#FFFFFF;
  --color-silver:#E3E7EC;
  --color-bg:#F6F7F9;
  --color-surface:#FFFFFF;
  --color-text:#1B2430;
  --color-text-muted:#4A5568;
  --color-border:#DADFE6;
  --color-error:#8A2A2A;

  /* --- ODVOZENÉ BARVY: počítají se ze základní palety, obvykle není třeba měnit --- */
  --color-on-primary:var(--color-accent);        /* text na tmavé ploše */
  --color-on-primary-muted:var(--color-silver);  /* doplňkový text na tmavé ploše */
  --color-header-bg:var(--color-bg);             /* záložní hodnota bez color-mix() */
  --color-rule-inverse:rgba(255,255,255,.22);    /* linka na tmavé ploše */
  --color-rule-inverse-soft:rgba(255,255,255,.18);
  --color-error-bg:#F7E9E9;
  --color-focus:var(--color-primary);

  --font-display:'Newsreader',Georgia,'Times New Roman',serif;
  --font-body:'IBM Plex Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;

  /* --- TYPOGRAFICKÁ ŠKÁLA: velikosti se řídí šířkou okna --- */
  --fs-h1:clamp(32px,4.2vw,54px);
  --fs-h2:clamp(26px,3vw,36px);
  --fs-stat:clamp(48px,13vw,96px);
  --fs-stat-sub:clamp(30px,7.5vw,44px);
  --fs-calc-out:clamp(26px,6vw,36px);

  /* --- ROZMĚRY --- */
  --space-section:clamp(52px,9vw,96px);
  --header-offset:84px;

  --radius-s:4px;
  --radius-m:6px;
  --ease-out:cubic-bezier(.2,0,0,1);
}

/* Průhledné a jemné odstíny se odvodí přímo ze základní palety. */
@supports (color:color-mix(in srgb,red,blue)){
  :root{
    --color-header-bg:color-mix(in srgb,var(--color-bg) 92%,transparent);
    --color-rule-inverse:color-mix(in srgb,var(--color-accent) 22%,transparent);
    --color-rule-inverse-soft:color-mix(in srgb,var(--color-accent) 18%,transparent);
    --color-error-bg:color-mix(in srgb,var(--color-error) 12%,var(--color-surface));
  }
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--color-bg);color:var(--color-text);font-family:var(--font-body);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;overflow-wrap:break-word}
h1,h2,h3{font-family:var(--font-display);font-weight:600;line-height:1.12;margin:0;color:var(--color-primary)}
p{margin:0;max-width:66ch}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;background:none;border:none;color:inherit}
input,textarea{font:inherit;color:inherit}
img{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--color-focus);outline-offset:3px;border-radius:2px}

.tabular{font-variant-numeric:tabular-nums;font-feature-settings:'tnum' 1}
.eyebrow{display:inline-block;font-family:var(--font-body);font-size:12px;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--color-secondary);margin-bottom:16px}
.container{max-width:1180px;margin-inline:auto;padding-inline:clamp(20px,5vw,64px)}
.section{padding-block:var(--space-section);border-top:1px solid var(--color-border)}
.section h2{font-size:var(--fs-h2)}
section[id]{scroll-margin-top:var(--header-offset)}
.visually-hidden{position:absolute !important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;left:-9999px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 26px;white-space:nowrap;font-size:15px;font-weight:600;border-radius:var(--radius-s);transition:transform 180ms var(--ease-out),background-color 180ms var(--ease-out),border-color 180ms var(--ease-out),color 180ms var(--ease-out)}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--color-primary);color:var(--color-on-primary)}
.btn-primary:hover{background:var(--color-primary-dark)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none !important}
.btn-outline{background:transparent;color:var(--color-primary);border:1.5px solid var(--color-primary)}
.btn-outline:hover{background:var(--color-primary);color:var(--color-on-primary)}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--color-primary);border-bottom:1.5px solid var(--color-silver);padding-bottom:2px;transition:border-color 180ms var(--ease-out)}
.link-arrow:hover{border-color:var(--color-primary)}

/* Mezi 920 a 1120 px se do jednoho radku hlavicky uz nevejde telefon i tlacitko;
   telefon je v tomto pasmu skryty a zustava v pate a v sekci Kontakt. */
@media (max-width:1120px){
  .header-phone{display:none}
}
header.site-header{position:sticky;top:0;z-index:40;background:var(--color-header-bg);backdrop-filter:blur(6px);border-bottom:1px solid var(--color-border)}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-block:18px}
.wordmark{display:flex;flex-direction:column;line-height:1.1}
.wordmark-title{font-family:var(--font-display);font-weight:600;font-size:21px;color:var(--color-primary)}
.wordmark-sub{font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--color-secondary);margin-top:3px}
nav.primary-nav{display:flex;align-items:center;gap:clamp(16px,2.2vw,32px)}
nav.primary-nav a{font-size:14.5px;font-weight:500;color:var(--color-text);padding-block:6px;border-bottom:1.5px solid transparent;white-space:nowrap;flex-shrink:0;transition:border-color 180ms var(--ease-out),color 180ms var(--ease-out)}
nav.primary-nav a:hover{border-color:var(--color-primary);color:var(--color-primary)}
.header-actions{display:flex;align-items:center;gap:22px}
.header-phone{font-size:14.5px;font-weight:600;color:var(--color-primary);white-space:nowrap;flex-shrink:0}
.menu-toggle{display:none;padding:8px;border-radius:var(--radius-s);color:var(--color-primary)}
.mobile-panel{display:none;border-top:1px solid var(--color-border);background:var(--color-bg)}
.mobile-panel.is-open{display:block;max-height:calc(100dvh - 76px);overflow-y:auto;overscroll-behavior:contain}
.mobile-panel .container{display:flex;flex-direction:column;padding-block:18px}
.mobile-panel a{padding-block:12px;font-size:16px;font-weight:500;border-bottom:1px solid var(--color-border)}
.mobile-panel .btn{margin-top:16px;justify-content:center}

section.hero{padding-block:clamp(44px,8vw,88px) var(--space-section)}
.hero-grid{display:grid;grid-template-columns:1.3fr .95fr;gap:56px;align-items:start}
.hero-copy h1{font-size:var(--fs-h1);letter-spacing:-.01em}
.hero-copy p.lead{font-size:19px;color:var(--color-text-muted);margin-top:22px}
.hero-ctas{display:flex;align-items:center;gap:28px;margin-top:34px;flex-wrap:wrap}
.hero-note{margin-top:22px;font-size:13.5px;color:var(--color-secondary)}

.hero-anchor{background:var(--color-primary);color:var(--color-on-primary);border-radius:var(--radius-m);padding:clamp(26px,6vw,44px) clamp(22px,5.5vw,40px);margin-top:8px}
.hero-anchor .stat-num{font-family:var(--font-display);font-weight:600;font-size:var(--fs-stat);line-height:.95;white-space:nowrap}
.hero-anchor .stat-label{font-size:15px;margin-top:12px;color:var(--color-on-primary-muted);max-width:22ch}
.hero-anchor hr{border:none;border-top:1px solid var(--color-rule-inverse);margin:clamp(22px,4vw,32px) 0}
.hero-anchor .stat-num--sub{font-family:var(--font-display);font-weight:600;font-size:var(--fs-stat-sub);line-height:1.05;white-space:nowrap}
.hero-anchor .stat-label--sub{font-size:14px;margin-top:8px;color:var(--color-on-primary-muted)}

.steps{margin-top:56px;display:flex;flex-direction:column}
.step-row{display:flex;gap:32px;padding-block:32px;border-top:1px solid var(--color-border)}
.step-row:last-child{border-bottom:1px solid var(--color-border)}
.step-row:nth-child(2){margin-left:64px}
.step-row:nth-child(4){margin-left:64px}
.step-num{font-family:var(--font-display);font-size:36px;font-weight:600;color:var(--color-primary);width:84px;flex-shrink:0}
.step-body h3{font-size:21px;font-weight:600;margin-bottom:8px}
.step-body p{color:var(--color-text-muted)}

.calc-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;margin-top:48px;align-items:start}
.calc-intro p{color:var(--color-text-muted);margin-top:14px}
.calc-panel{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-m);padding:clamp(22px,5vw,36px)}
.calc-label{font-size:13px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--color-secondary);display:block;margin-bottom:14px}
.calc-inputs{display:flex;align-items:center;gap:18px}
input[type="range"]{flex:1;accent-color:var(--color-primary);height:4px}
input[type="number"].calc-number{width:clamp(104px,30%,132px);min-width:0;padding:10px 12px;border:1px solid var(--color-border);border-radius:var(--radius-s);font-size:16px;text-align:right}
.calc-range-hint{display:flex;justify-content:space-between;font-size:12.5px;color:var(--color-secondary);margin-top:8px}
.calc-out{margin-top:32px;padding-top:28px;border-top:1px solid var(--color-border)}
.calc-out-label{font-size:13px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--color-secondary)}
.calc-out-value{font-family:var(--font-display);font-weight:600;font-size:var(--fs-calc-out);line-height:1.15;color:var(--color-primary);margin-top:10px}
.calc-out-note{font-size:13.5px;color:var(--color-text-muted);margin-top:14px}
.calc-warning{margin-top:16px;font-size:13.5px;color:var(--color-primary-dark);background:var(--color-silver);border-radius:var(--radius-s);padding:12px 14px;display:none}
.calc-warning.is-visible{display:block}

.podklady-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;margin-top:48px}
.podklady-list{border-top:1px solid var(--color-border)}
.podklady-item{display:flex;gap:18px;padding-block:20px;border-bottom:1px solid var(--color-border)}
.podklady-item .mark{font-family:var(--font-display);color:var(--color-primary);font-weight:600}
.podklady-note{color:var(--color-text-muted);align-self:center}

.work-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;margin-top:48px}
.work-block h3{font-size:20px;margin-bottom:12px}
.work-block p{color:var(--color-text-muted)}
.contract-note{margin-top:56px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-m);padding:36px;display:flex;justify-content:space-between;gap:32px;align-items:center;flex-wrap:wrap}
.contract-note h3{font-size:19px;margin-bottom:10px}
.contract-note p{color:var(--color-text-muted);max-width:52ch}

.about-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start;margin-top:48px}
.photo-placeholder{aspect-ratio:4/5;background:var(--color-silver);border-radius:var(--radius-m);display:flex;align-items:center;justify-content:center;color:var(--color-secondary);font-size:13px;letter-spacing:.05em;text-transform:uppercase;text-align:center;padding:24px}
.about-photo{aspect-ratio:4/5;width:100%;height:auto;border-radius:var(--radius-m);object-fit:cover;object-position:center 22%;display:block}
.about-copy h2{font-size:30px}
.about-copy p.bio{margin-top:20px;font-size:17px;color:var(--color-text-muted)}
.about-id{margin-top:32px;border-top:1px solid var(--color-border);padding-top:24px;display:grid;grid-template-columns:auto 1fr;gap:8px 20px;font-size:14.5px}
.about-id dt{color:var(--color-secondary)}
.about-id dd{margin:0;font-weight:500}

.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;margin-top:48px}
.contact-intro p{color:var(--color-text-muted);margin-top:16px}
.contact-alt{margin-top:28px;font-size:14.5px}
.contact-alt a{font-weight:600;color:var(--color-primary)}
.link-strong{color:var(--color-primary);font-weight:600}
form.contact-form{display:flex;flex-direction:column;gap:20px}
form.contact-form.is-hidden{display:none}
.form-row{display:flex;flex-direction:column;gap:8px}
.form-row label{font-size:13px;font-weight:600;letter-spacing:.03em;text-transform:uppercase;color:var(--color-secondary)}
.form-row input,.form-row textarea{padding:12px 14px;border:1px solid var(--color-border);border-radius:var(--radius-s);background:var(--color-surface);width:100%}
.form-row textarea{resize:vertical;min-height:110px}
.form-two{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-hint{display:block;margin-top:6px;font-size:12.5px;color:var(--color-secondary)}
.form-row input[type="file"]{font-size:13.5px;color:var(--color-text-muted)}
.form-row input[type="file"]::file-selector-button{font:inherit;font-weight:600;font-size:13.5px;padding:8px 16px;margin-right:14px;border-radius:var(--radius-s);border:1.5px solid var(--color-primary);background:transparent;color:var(--color-primary);cursor:pointer;transition:background-color 180ms var(--ease-out),color 180ms var(--ease-out)}
.form-row input[type="file"]::file-selector-button:hover{background:var(--color-primary);color:var(--color-on-primary)}
.form-row input[type="file"]{max-width:100%}
form.contact-form button[type="submit"]{align-self:flex-start}
.form-error{display:none;font-size:13.5px;color:var(--color-error);background:var(--color-error-bg);border-radius:var(--radius-s);padding:12px 14px}
.form-error.is-visible{display:block}
.form-consent{display:flex;align-items:flex-start;gap:10px}
.form-consent input{margin-top:3px;flex-shrink:0;width:16px;height:16px;accent-color:var(--color-primary)}
.form-consent label{font-size:13.5px;color:var(--color-text-muted);line-height:1.45;text-transform:none;font-weight:400;letter-spacing:0}
.form-success{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-m);padding:32px;display:none}
.form-success.is-visible{display:block}
.form-success h3{font-size:20px;margin-bottom:10px}
.form-success p{color:var(--color-text-muted)}

footer.site-footer{background:var(--color-primary);color:var(--color-on-primary)}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px;padding-block:64px}
.footer-col h4{font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--color-on-primary-muted);margin-bottom:16px}
.footer-col a{display:block;padding-block:5px;color:var(--color-on-primary);opacity:.92}
.footer-col a:hover{opacity:1;text-decoration:underline}
.footer-col p{color:var(--color-on-primary-muted);font-size:14px}
.footer-bottom{border-top:1px solid var(--color-rule-inverse-soft);padding-block:22px;font-size:13px;color:var(--color-on-primary-muted);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

@media (max-width:920px){
  nav.primary-nav{display:none}
  .header-phone{display:none}
  .menu-toggle{display:flex}

  .hero-grid,.calc-grid,.podklady-grid,.work-grid,.about-grid,.contact-grid{grid-template-columns:1fr}
  .hero-grid{gap:0}
  .calc-grid,.work-grid,.contact-grid{gap:36px}
  .podklady-grid{gap:28px}
  .hero-anchor{margin-top:36px}
  .step-row:nth-child(2),.step-row:nth-child(4){margin-left:28px}
  .form-two{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .about-grid{gap:32px}
  .photo-placeholder,.about-photo{max-width:280px}
  .contract-note{flex-direction:column;align-items:flex-start}
}

@media (max-width:600px){
  /* Hlavní CTA je na mobilu v hamburger menu a hned pod nadpisem v heru –
     v hlavičce se už na jeden řádek nevešlo. */
  .header-actions .btn{display:none}
  .header-row{gap:12px;padding-block:14px}
  .steps{margin-top:36px}
  .step-row{gap:18px;padding-block:24px}
  .step-row:nth-child(2),.step-row:nth-child(4){margin-left:0}
  .step-num{width:52px;font-size:30px}
  .calc-grid,.podklady-grid,.work-grid,.about-grid,.contact-grid,.steps{margin-top:32px}
  .calc-inputs{gap:12px}
  .contract-note{margin-top:36px;padding:26px 22px}
  .hero-ctas{gap:20px}
  form.contact-form button[type="submit"]{align-self:stretch}
  .footer-grid{padding-block:44px}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;scroll-behavior:auto !important}
}