/* ==========================================================================
   Klima Varna — base layer: tokens, reset, typography, layout
   Палитра: варненско слънце (кост + пясък), морско синьо-зелено и топло злато.
   ========================================================================== */

/* --- Self-hosted fonts (SIL OFL 1.1) ------------------------------------- */
@font-face{font-family:'Onest';font-style:normal;font-weight:300 900;font-display:swap;src:url('../fonts/onest-cyrillic-ext-300-900.woff2') format('woff2');unicode-range:U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F}
@font-face{font-family:'Onest';font-style:normal;font-weight:300 900;font-display:swap;src:url('../fonts/onest-cyrillic-300-900.woff2') format('woff2');unicode-range:U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116}
@font-face{font-family:'Onest';font-style:normal;font-weight:300 900;font-display:swap;src:url('../fonts/onest-latin-ext-300-900.woff2') format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Onest';font-style:normal;font-weight:300 900;font-display:swap;src:url('../fonts/onest-latin-300-900.woff2') format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/jbmono-cyrillic-400.woff2') format('woff2');unicode-range:U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/jbmono-latin-400.woff2') format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/jbmono-cyrillic-500.woff2') format('woff2');unicode-range:U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/jbmono-latin-500.woff2') format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}

/* --- Design tokens ------------------------------------------------------- */
:root{
  /* Повърхности */
  --bone:#F8F6F1;
  --bone-2:#EFEBE0;
  --sand:#EBE6D9;
  --white:#FFFFFF;

  /* Мастило и море */
  --ink:#0E1C1E;
  --marine:#0C5257;
  --marine-2:#0A4046;
  --marine-3:#072E33;
  --marine-tint:#DCE9E8;

  /* Слънце */
  --sun:#D99A3C;
  --sun-soft:#F3DDB4;

  /* Семантични */
  --bg:var(--bone);
  --fg:var(--ink);
  --fg-muted:rgba(14,28,30,.64);
  --fg-faint:rgba(14,28,30,.52);
  --line:rgba(14,28,30,.13);
  --line-soft:rgba(14,28,30,.07);
  --surface:var(--white);
  --surface-2:var(--bone-2);
  --accent:var(--marine);
  --accent-2:var(--sun);
  --on-accent:#F8F6F1;
  --tick:var(--sun);

  --shadow-soft:0 2px 4px -2px rgba(14,28,30,.05),0 18px 40px -26px rgba(12,82,87,.28);
  --shadow-lift:0 4px 10px -4px rgba(14,28,30,.07),0 34px 64px -34px rgba(12,82,87,.4);

  --font-sans:'Onest','Segoe UI',system-ui,sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,SFMono-Regular,monospace;

  --step--1:clamp(.84rem,.82rem + .1vw,.92rem);
  --step-0:clamp(.98rem,.94rem + .18vw,1.06rem);
  --step-1:clamp(1.12rem,1.05rem + .3vw,1.28rem);
  --step-2:clamp(1.35rem,1.2rem + .7vw,1.7rem);
  --step-3:clamp(1.7rem,1.4rem + 1.5vw,2.4rem);
  --step-4:clamp(2.1rem,1.6rem + 2.6vw,3.6rem);
  --step-5:clamp(2.6rem,1.7rem + 4.4vw,5.4rem);

  --shell:1360px;
  --gutter:clamp(1rem,3.4vw,2.5rem);
  --section-y:clamp(4.5rem,9vw,9rem);

  --r-pill:999px;
  --r-xl:34px;
  --r-lg:26px;
  --r-md:18px;
  --r-sm:12px;

  --ease:cubic-bezier(.32,.72,0,1);
  --spring:cubic-bezier(.22,1.15,.36,1);
  --dur:.7s;

  --nav-h:76px;
}

/* Тъмна морска лента — инвертира само семантичните токени. */
.band-deep{
  --bg:var(--marine-3);
  --fg:#F2EFE7;
  --fg-muted:rgba(242,239,231,.7);
  --fg-faint:rgba(242,239,231,.48);
  --line:rgba(242,239,231,.17);
  --line-soft:rgba(242,239,231,.09);
  --surface:rgba(242,239,231,.07);
  --surface-2:rgba(242,239,231,.04);
  --accent:var(--sun);
  --on-accent:#0B2528;
  --tick:var(--sun);
  color:var(--fg);
}

/* --- Reset --------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 24px);overflow-x:clip}
body{
  margin:0;
  background:var(--bone);
  color:var(--fg);
  font-family:var(--font-sans);
  font-size:var(--step-0);
  line-height:1.58;
  font-weight:400;
  letter-spacing:-.011em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:clip;
}
img,svg,video{display:block;max-width:100%;height:auto}
img{border-radius:inherit}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,blockquote,ul,ol,dl{margin:0}
ul,ol{padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
::selection{background:var(--sun-soft);color:var(--ink)}
:focus-visible{outline:2px solid var(--marine);outline-offset:3px;border-radius:4px}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}

/* --- Typography ---------------------------------------------------------- */
h1,h2,h3,h4,.h1,.h2,.h3{
  font-family:var(--font-sans);
  font-weight:500;
  line-height:1.04;
  letter-spacing:-.035em;
  text-wrap:balance;
  color:var(--fg);
}
.h-display{font-size:var(--step-5)}
h1,.h1{font-size:var(--step-4)}
h2,.h2{font-size:var(--step-4)}
h3,.h3{font-size:var(--step-2);line-height:1.16;letter-spacing:-.03em}
h4{font-size:var(--step-1);line-height:1.2;letter-spacing:-.025em;font-weight:500}
p{text-wrap:pretty}
.lead{font-size:var(--step-1);line-height:1.52;color:var(--fg-muted);max-width:56ch}
.muted{color:var(--fg-muted)}
.faint{color:var(--fg-faint)}
strong,b{font-weight:600}
sup{font-size:.6em;vertical-align:super;line-height:0}

.eyebrow{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--font-mono);font-size:.69rem;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;line-height:1;
  color:var(--fg-muted);
}
.eyebrow::before{
  content:"";width:7px;height:7px;background:var(--tick);
  border-radius:1px;flex:none;
}
.eyebrow--center{justify-content:center}

/* --- Layout -------------------------------------------------------------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.shell--wide{max-width:1560px}
.section{padding-block:var(--section-y);position:relative}
.section--tight{padding-block:clamp(3rem,6vw,5.5rem)}
.section--sand{background:var(--bone-2)}
.section--deep{background:var(--marine-3)}
.rule{height:1px;background:var(--line);border:0;margin:0}

.section-head{display:grid;gap:clamp(1.1rem,2vw,1.6rem);padding-top:clamp(1.6rem,3vw,2.6rem)}
.section-head--center{justify-items:center;text-align:center}
.section-head--split{grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);align-items:end}
@media (max-width:860px){.section-head--split{grid-template-columns:1fr}}

.grid{display:grid;gap:clamp(.9rem,1.6vw,1.4rem)}
.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1000px){.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}.cols-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.cols-2,.cols-3,.cols-4{grid-template-columns:1fr}}

/* --- Ambient texture ----------------------------------------------------- */
.grain{
  position:fixed;inset:0;z-index:60;pointer-events:none;opacity:.028;
  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='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode:multiply;
}

/* --- Scroll reveal ------------------------------------------------------- */
.reveal{opacity:0;transform:translate3d(0,42px,0);filter:blur(6px)}
.is-in{opacity:1;transform:none;filter:none;transition:opacity .9s var(--ease) var(--d,0s),transform .95s var(--spring) var(--d,0s),filter .9s var(--ease) var(--d,0s)}
.no-js .reveal,.no-js .rise{opacity:1;transform:none;filter:none;clip-path:none}
.no-js .mask__in{transform:none}
/* No JS means no accordion: show every answer rather than hiding them for good. */
.no-js .acc__panel{height:auto}
.no-js .acc__panel .acc__inner{opacity:1;transform:none}
.no-js .acc__sign{display:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;filter:none}}

/* --- A11y ---------------------------------------------------------------- */
.screen-reader-text{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;
}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:100;
  background:var(--marine);color:var(--on-accent);padding:.8rem 1.2rem;border-radius:0 0 var(--r-sm) 0;font-weight:600;
}
.skip-link:focus{left:0}
[hidden]{display:none!important}