/* ==========================================================================
   Components: nav, menu, footer, seam transition, toast, reveals, page header,
   section heads, chips & picks, CTA band, 404
   ========================================================================== */

/* ---------- Nav ---------- */
.nav {
  --nav-fg: var(--ink); --nav-glass: rgba(242, 238, 232, 0.82);
  position: fixed; inset: 0 0 auto 0; z-index: 120; height: var(--nav-h);
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1.5rem;
  padding-inline: var(--gutter); color: var(--nav-fg);
  transition: transform 600ms var(--ease-out), color var(--t-med);
}
.nav[data-theme] { background: none; }
.nav[data-theme="noc"] { --nav-fg: var(--zid); --nav-glass: rgba(24, 23, 27, 0.78); }
.nav[data-theme="lavanda"] { --nav-glass: rgba(163, 183, 234, 0.84); }
.nav[data-theme="roza"] { --nav-fg: #2A1B19; --nav-glass: rgba(235, 208, 197, 0.86); }
.nav[data-theme="signal"] { --nav-glass: rgba(236, 91, 40, 0.88); }
.nav::before {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: var(--nav-glass); -webkit-backdrop-filter: blur(14px) saturate(1.2); backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid color-mix(in srgb, var(--nav-fg) 12%, transparent);
  opacity: 0; transition: opacity var(--t-med), background-color var(--t-med);
}
.nav.is-scrolled::before { opacity: 1; }
.nav.is-hidden { transform: translateY(-110%); }
.nav:focus-within { transform: none; }
.menu-open .nav::before { opacity: 0; }

.nav__brand { justify-self: start; display: flex; align-items: center; gap: 0.75rem; }
.nav__mark { width: 36px; height: 36px; flex: none; transition: transform 700ms var(--ease-spring); }
.nav__brand:hover .nav__mark { transform: rotate(-6deg); }
.mark__seam { transform-origin: 50% 50%; transition: transform 700ms var(--ease-spring); }
.nav__brand:hover .mark__seam { transform: scaleY(1.25); }
.nav__name { display: grid; line-height: 1; font-family: var(--f-cond); font-weight: 800; font-size: 1.28rem; letter-spacing: 0.02em; text-transform: uppercase; }
.nav__name small { font-family: var(--f-sans); font-size: 0.64rem; font-weight: 600; letter-spacing: 0.18em; opacity: 0.66; margin-top: 0.25rem; }
.nav__list { display: flex; gap: clamp(1.4rem, 2.4vw, 2.8rem); }
.nav__link { position: relative; display: inline-block; padding: 0.5rem 0; font-family: var(--f-cond); font-weight: 700; font-size: 1.12rem; letter-spacing: 0.08em; text-transform: uppercase; }
.nav__link::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0.2rem; height: 5px;
  background: linear-gradient(90deg, var(--signal) 0 1px, transparent 1px) 0 0 / 5px 100% repeat-x, linear-gradient(var(--signal), var(--signal)) 0 100% / 100% 1px no-repeat;
  transform: scaleX(0); transform-origin: 0 50%; transition: transform 520ms var(--ease-out);
}
.nav__link:hover::after, .nav__link.is-active::after { transform: scaleX(1); }
.nav__actions { justify-self: end; display: flex; align-items: center; gap: 0.75rem; }
.nav__burger { display: none; width: 44px; height: 44px; position: relative; }
.nav__burger-line { position: absolute; left: 10px; right: 10px; height: 1.6px; background: currentColor; transition: transform var(--t-med) var(--ease-out); }
.nav__burger-line:first-child { top: 17px; }
.nav__burger-line:nth-child(2) { top: 26px; }
.menu-open .nav__burger-line:first-child { transform: translateY(4.5px) rotate(45deg); }
.menu-open .nav__burger-line:nth-child(2) { transform: translateY(-4.5px) rotate(-45deg); }
@media (max-width: 860px) {
  .nav { grid-template-columns: 1fr auto; }
  .nav__menu { display: none; }
  .nav__burger { display: block; }
}
@media (max-width: 520px) { .nav__cta { display: none; } .nav__name { font-size: 1.12rem; } }

/* ---------- Menu: two halves close in from the sides ---------- */
.menu { position: fixed; inset: 0; z-index: 110; color: var(--zid); visibility: hidden; overflow-y: auto; transition: visibility 0s 760ms; }
.menu::before, .menu::after {
  content: ''; position: fixed; top: 0; bottom: 0; width: 50.5%; background: var(--ink); z-index: -1;
  transition: transform 760ms var(--ease-io);
}
.menu::before { left: 0; transform: translateX(-101%); }
.menu::after { right: 0; transform: translateX(101%); }
.menu.is-open { visibility: visible; transition: visibility 0s; }
.menu.is-open::before, .menu.is-open::after { transform: none; }
.menu__seam { position: fixed; left: 50%; top: 0; bottom: 0; width: 1px; background: var(--signal); transform: scaleY(0); transition: transform 500ms var(--ease-out); }
.menu.is-open .menu__seam { transform: scaleY(1); opacity: 0.45; transition-delay: 520ms; }
.menu__inner { position: relative; min-height: 100%; display: flex; flex-direction: column; justify-content: space-between; gap: 2.5rem; padding: calc(var(--nav-h) + 2rem) var(--gutter) 2rem; }
.menu__link {
  display: inline-block; font-family: var(--f-cond); font-weight: 800; font-size: clamp(3rem, 15vw, 5.4rem); line-height: 0.98; text-transform: uppercase;
  opacity: 0; transform: translateY(40%); transition: opacity 500ms, transform 700ms var(--ease-out);
}
.menu.is-open .menu__link { opacity: 1; transform: none; transition-delay: calc(380ms + (var(--i) + 1) * 55ms); }
.menu__link.is-active { font-family: var(--f-serif); font-style: italic; font-weight: 500; text-transform: none; color: var(--signal-hi); }
.menu__foot { display: grid; gap: 1rem; justify-items: start; opacity: 0; transition: opacity 500ms 600ms; }
.menu.is-open .menu__foot { opacity: 1; }
.menu__mail { font-family: var(--f-cond); font-size: 1.6rem; font-weight: 700; letter-spacing: 0.02em; }
.menu__meta { color: #A8A3AC; font-size: var(--fs-small); }

/* ---------- Footer ---------- */
.footer { position: relative; overflow: hidden; padding: var(--space-xl) var(--gutter) 1.5rem; }
.footer__cta { position: relative; display: grid; justify-items: start; gap: 1.1rem; padding-bottom: var(--space-l); border-bottom: 1px solid var(--line); }
.footer__mail {
  font-family: var(--f-cond); font-weight: 800; font-size: clamp(2.5rem, 0.6rem + 8.4vw, 9.6rem); line-height: 0.9; letter-spacing: -0.005em;
  overflow-wrap: anywhere; background: linear-gradient(var(--signal), var(--signal)) 0 100% / 0 4px no-repeat;
  transition: background-size 800ms var(--ease-out), color var(--t-med);
}
.footer__mail:hover { background-size: 100% 4px; color: var(--signal-hi); }
.footer__alt { color: var(--muted); }
.footer__alt .link-u { color: var(--zid); }
.footer__grid { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; padding-block: var(--space-l); }
.footer__col { display: grid; align-content: start; justify-items: start; gap: 0.7rem; font-size: 0.95rem; }
.footer__links { display: grid; gap: 0.35rem; }
.footer__links a { opacity: 0.85; transition: opacity var(--t-fast), padding var(--t-med) var(--ease-out); }
.footer__links a:hover { opacity: 1; padding-left: 0.4rem; }
.footer__base { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem; padding-top: 1.25rem; border-top: 1px solid var(--line); }
.footer__small { font-size: 0.78rem; color: var(--muted); }
@media (max-width: 720px) { .footer__grid { grid-template-columns: 1fr; } }

/* ---------- Seam transition: two halves meet in the middle, then part on the next page ---------- */
.pt { position: fixed; inset: 0; z-index: 300; pointer-events: none; visibility: hidden; }
.pt.is-active { visibility: visible; pointer-events: auto; }
.pt__half { position: absolute; top: 0; bottom: 0; width: 50.5%; background: var(--ink); }
.pt__half--l { left: 0; transform: translateX(-101%); }
.pt__half--r { right: 0; transform: translateX(101%); }
.pt__seam { position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; margin-left: -0.5px; background: var(--signal); transform: scaleY(0); }
.pt__label {
  position: absolute; left: 0; right: 0; top: 50%; translate: 0 -50%; text-align: center; opacity: 0;
  font-family: var(--f-cond); font-weight: 800; text-transform: uppercase; font-size: clamp(3rem, 1rem + 9vw, 9rem); line-height: 1; color: var(--zid);
}
.pt-enter .pt { visibility: visible; }
.pt-enter .pt__half { transform: none; }
.pt-enter .pt__seam { transform: none; }
.pt-enter .pt__label { opacity: 1; }
.is-leaving main { transition: opacity 500ms var(--ease-io); opacity: 0.6; }

/* ---------- Hints for mouse vs finger ---------- */
.hint-touch { display: none; }
@media (hover: none), (pointer: coarse) { .hint-fine { display: none; } .hint-touch { display: inline; } }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 1.25rem; z-index: 260; max-width: calc(100% - 2rem); padding: 0.9rem 1.3rem;
  background: var(--ink); color: var(--zid); font-size: 0.93rem; box-shadow: 0 18px 44px rgba(0, 0, 0, 0.3);
  border-left: 3px solid var(--signal);
  transform: translate(-50%, calc(100% + 2rem)); opacity: 0; pointer-events: none; transition: transform 600ms var(--ease-out), opacity 400ms;
}
.toast.is-on { transform: translate(-50%, 0); opacity: 1; }

/* ---------- Reveals ---------- */
.js [data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity 1000ms var(--ease-out), transform 1200ms var(--ease-out); transition-delay: var(--d, 0ms); }
.js [data-reveal].is-in { opacity: 1; transform: none; }
/* Room above for carons/acutes (Č, Ć, Š, Ž) and to the sides for italics; negative margins keep the layout unchanged */
.w { display: inline-block; overflow: hidden; vertical-align: top; padding: 0.2em 0.1em 0.12em; margin: -0.2em -0.1em -0.12em; }
.w__i { display: inline-block; }
.js [data-split] .w__i { transform: translateY(112%); transition: transform 1100ms var(--ease-out); transition-delay: calc(var(--i, 0) * 45ms); }
.js [data-split].is-in .w__i { transform: none; }

/* ---------- Page header ---------- */
.phero { position: relative; padding: calc(var(--nav-h) + var(--space-l)) var(--gutter) var(--space-l); }
.phero__title { font-family: var(--f-cond); font-weight: 800; text-transform: uppercase; font-size: var(--fs-h1); line-height: 0.84; margin-top: 1.2rem; max-width: 11ch; }
.phero__title em { font-family: var(--f-serif); font-style: italic; font-weight: 500; text-transform: none; color: var(--accent); font-size: 1.02em; letter-spacing: -0.02em; }
.phero__lead { margin-top: 1.6rem; font-size: var(--fs-lead); line-height: 1.5; max-width: 44ch; color: var(--muted); }
.phero--compact { padding-bottom: var(--space-m); }

/* ---------- Section head ---------- */
.sec { padding-block: var(--space-xl); }
.sec-head { display: grid; gap: 1.1rem; margin-bottom: var(--space-l); }
.sec-head .h2 { max-width: 14ch; }
.sec-head--row { grid-template-columns: 1fr minmax(0, 26rem); align-items: end; gap: 1.1rem var(--space-m); }
.sec-head--row .label { grid-column: 1 / -1; }
.sec-head__note { color: var(--muted); }
@media (max-width: 760px) { .sec-head--row { grid-template-columns: 1fr; } }

/* ---------- Chips & picks ---------- */
.chips, .picks { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip, .pick span {
  display: inline-flex; align-items: center; min-height: 46px; padding: 0.5rem 1rem; border-radius: 2px;
  box-shadow: inset 0 0 0 1px var(--line-strong); font-size: 0.95rem; font-weight: 500; background: transparent;
  transition: background-color 320ms var(--ease-out), color 280ms, box-shadow 280ms, transform var(--t-fast);
}
.chip:hover, .pick:hover span { box-shadow: inset 0 0 0 1px var(--fg); }
.chip[aria-pressed="true"], .pick input:checked + span { background: var(--ink); color: var(--zid); box-shadow: inset 0 -3px 0 var(--signal); }
.chip:active, .pick input:active + span { transform: translateY(1px); }
.pick { position: relative; cursor: pointer; }
.pick input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.pick input:focus-visible + span { outline: 2px solid var(--hot); outline-offset: 3px; }

/* ---------- Next diagnostic chip ---------- */
.diag { display: inline-grid; grid-template-columns: auto 1fr; align-items: center; gap: 0.2rem 1rem; padding: 1rem 1.2rem 1rem 1rem; box-shadow: inset 0 0 0 1px var(--line-strong); }
.diag__day { grid-row: span 2; display: grid; place-items: center; min-width: 4.2rem; padding: 0.35rem 0.5rem; background: var(--ink); color: var(--zid); font-family: var(--f-cond); font-weight: 800; font-size: 2.4rem; line-height: 0.95; text-align: center; }
.diag__day small { display: block; font-size: 0.8rem; letter-spacing: 0.14em; font-weight: 700; }
.diag__what { font-family: var(--f-cond); font-weight: 800; font-size: 1.35rem; letter-spacing: 0.04em; text-transform: uppercase; line-height: 1.05; }
.diag__when { color: var(--muted); font-size: 0.92rem; }
.diag__when b { color: var(--accent); font-weight: 700; }

/* ---------- CTA band ---------- */
.cta { position: relative; padding: var(--space-xl) 0; overflow: hidden; }
.cta__inner { position: relative; display: grid; grid-template-columns: 1.3fr auto; align-items: end; gap: var(--space-m); }
.cta .h2 { max-width: 13ch; margin-top: 1rem; }
.cta__note { margin-top: 1.2rem; max-width: 40ch; color: var(--muted); }
.cta__actions { display: grid; justify-items: start; gap: 1.1rem; }
/* The seam that runs through every CTA band */
.cta::before { content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: currentColor; opacity: 0.16; }
@media (max-width: 760px) { .cta__inner { grid-template-columns: 1fr; } .cta::before { left: var(--gutter); } }

/* ---------- 404 ---------- */
.nf { position: relative; min-height: 86vh; display: grid; align-items: center; padding: calc(var(--nav-h) + 3rem) var(--gutter) 5rem; overflow: hidden; }
.nf__inner { position: relative; display: grid; gap: 1.4rem; justify-items: start; max-width: 60rem; }
.nf__links { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.nf__seam { position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: var(--signal); opacity: 0.6; }

/* ---------- Safety nets ---------- */
.pt-enter .pt { animation: ptFallback 0s 4.5s forwards; }
.pt-enter [data-reveal] { animation: revealFallback 0s 4.5s forwards; }
@keyframes ptFallback { to { visibility: hidden; } }
@keyframes revealFallback { to { opacity: 1; transform: none; } }