/* =============================================================================
   SAPPHIRE CORE INSTITUTE: DESIGN SYSTEM
   =============================================================================
   A warm, editorial system:
     • Type: Inter for display headlines, body, and UI. A clean, neutral sans-serif.
     • Color: warm off-white paper, warm near-black ink, deep sapphire as the
       brand color, and a sparing gold accent. Four colors, plus the paper.
     • Form: pill buttons, 1px hairline dividers, rounded cards, generous
       whitespace, and subtle smooth-scroll + rise-in reveals.
   The :root tokens below are the single source of truth; component rules
   consume the variables, never raw values.
   ========================================================================== */

:root{
  /* color */
  --paper:#FAF7F0;            /* warm off-white */
  --paper-2:#F1ECE1;          /* warm panel */
  --ink:#17130E;              /* warm near-black text */
  --ink-60:rgba(23,19,14,.62);
  --ink-45:rgba(23,19,14,.45);
  --line:rgba(23,19,14,.14);  /* hairline dividers */
  --accent:#1B3870;           /* brand sapphire (mid) */
  --accent-deep:#0A1B3D;      /* brand sapphire (deep) */
  --gold:#C9A656;             /* sparing warm accent (decorative / on-dark only) */
  --on-dark:#FAF7F0;
  --on-dark-70:rgba(250,247,240,.72);
  --line-dark:rgba(250,247,240,.20);

  /* type */
  --font:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-display:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --fs-display:clamp(3rem,1rem + 9.2vw,6.7rem);     /* 48 → 107 */
  --fs-h1:clamp(2.5rem,1.2rem + 7vw,5.5rem);        /* 40 → 88  */
  --fs-h2:clamp(2.25rem,1.3rem + 4.8vw,4rem);       /* 36 → 64  */
  --fs-h3:clamp(1.5rem,1.15rem + 1.7vw,2.25rem);    /* 24 → 36  */
  --fs-xl:clamp(1.5rem,1.15rem + 1.6vw,2.25rem);    /* 24 → 36 big body */
  --fs-lg:clamp(1.25rem,1.05rem + .9vw,1.6rem);     /* 20 → 25.6 */
  --fs-body:clamp(1.0625rem,1rem + .3vw,1.25rem);   /* 17 → 20  */
  --fs-label:1rem;
  --fs-small:.875rem;

  /* spacing / layout */
  --space-2xs:.5rem; --space-xs:.75rem; --space-sm:1rem; --space-md:1.5rem;
  --space-lg:2.5rem; --space-xl:4rem; --space-2xl:6rem;
  --section-y:clamp(5rem,9vw,11rem);
  --gutter:clamp(1.25rem,5vw,5.5rem);
  --maxw:1360px;
  --gap:clamp(1rem,2vw,1.5rem);

  /* shape / motion */
  --radius:16px;
  --pill:999px;
  --ease:cubic-bezier(.16,1,.3,1);
  --dur:950ms;
  --ui:260ms;
  --header-h:clamp(4.5rem,6vw,5.5rem);
}

/* ===== Reset / base ======================================================= */
*,*::before,*::after{box-sizing:border-box}
*{margin:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  font-size:var(--fs-body);
  font-weight:400;
  line-height:1.55;
  letter-spacing:-.011em;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,picture,video,svg{display:block;max-width:100%}
img,video{height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;padding:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
::selection{background:var(--ink);color:var(--paper)}

.skip-link{
  position:absolute;left:1rem;top:-5rem;z-index:200;
  background:var(--ink);color:var(--paper);padding:.75rem 1.25rem;border-radius:var(--pill);
  font-weight:500;transition:top var(--ui) var(--ease);
}
.skip-link:focus{top:1rem}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;border:0;clip:rect(0 0 0 0);clip-path:inset(50%);overflow:hidden;white-space:nowrap}

/* ===== Type ============================================================== */
h1,h2,h3,h4{font-family:var(--font-display);font-optical-sizing:auto;font-weight:400;letter-spacing:-.015em;line-height:1.07;text-wrap:balance}
.display{font-size:var(--fs-display);line-height:1.03;letter-spacing:-.018em}
.h1{font-size:var(--fs-h1);line-height:1.05;letter-spacing:-.018em}
.h2{font-size:var(--fs-h2)}
.h3{font-size:var(--fs-h3);letter-spacing:-.012em;line-height:1.14}
.lead-xl{font-size:var(--fs-xl);line-height:1.2;letter-spacing:-.02em;font-weight:400;text-wrap:pretty}
.lead{font-size:var(--fs-lg);line-height:1.35;letter-spacing:-.015em;color:var(--ink)}
.body{font-size:var(--fs-body)}
.muted{color:var(--ink-60)}
em,i{font-style:italic}
strong{font-weight:600}

.eyebrow{font-family:var(--font);font-size:var(--fs-label);font-weight:500;letter-spacing:0;color:var(--ink-60)}
.prose{max-width:60ch}
.prose p + p{margin-top:1.1em}
.prose a{color:var(--accent);text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:.18em;transition:text-decoration-color var(--ui) var(--ease)}
.prose a:hover{text-decoration-color:var(--accent)}

/* ===== Layout ============================================================ */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:var(--section-y)}
.section--alt{background:var(--paper-2)}
.divide{border-top:1px solid var(--line)}
.center{text-align:center}
:where(section){scroll-margin-top:var(--header-h)}

/* ===== Buttons / links ==================================================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  font-weight:500;font-size:1rem;letter-spacing:-.01em;line-height:1;
  padding:1.05em 1.9em;border-radius:var(--pill);border:1px solid transparent;
  background:var(--accent);color:var(--on-dark);
  transition:background var(--ui) var(--ease),color var(--ui) var(--ease),border-color var(--ui) var(--ease);
}
.btn svg{width:1em;height:1em;flex:none;transition:transform var(--ui) var(--ease)}
.btn:hover{background:var(--accent-deep)}
.btn:hover svg{transform:translateX(.2em)}
.btn--outline{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--outline:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn--on-dark{background:var(--paper);color:var(--ink)}
.btn--on-dark:hover{background:var(--accent);color:var(--paper)}
.btn--ghost-dark{background:transparent;color:var(--paper);border-color:var(--line-dark)}
.btn--ghost-dark:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}

.arrow{display:inline-flex;align-items:center;gap:.5em;font-weight:500;letter-spacing:-.01em;transition:gap var(--ui) var(--ease)}
.arrow svg{width:.9em;height:.9em;flex:none;transition:transform var(--ui) var(--ease)}
.arrow:hover{gap:.8em}
.arrow:hover svg{transform:translateX(.2em)}

/* ===== Header / nav ====================================================== */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:100;display:flex;align-items:center;
  min-height:var(--header-h);border-bottom:1px solid transparent;
  transition:background var(--ui) var(--ease),border-color var(--ui) var(--ease);
}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:var(--space-md)}
.brand{font-family:var(--font-display);font-weight:500;font-size:clamp(1.2rem,1rem + .8vw,1.6rem);letter-spacing:-.01em;color:var(--on-dark);white-space:nowrap;transition:color var(--ui) var(--ease)}
.nav{display:flex;align-items:center;gap:clamp(1rem,2vw,2rem)}
.nav-menu{display:flex;align-items:center;gap:clamp(1rem,2vw,2rem)}
.nav-link{font-size:1rem;font-weight:500;letter-spacing:-.01em;color:var(--on-dark-70);transition:color var(--ui) var(--ease)}
.nav-link:hover,.nav-link[aria-current="page"]{color:var(--on-dark)}
.nav-cta{font-size:.95rem;padding:.7em 1.3em}

/* solid state (scrolled, or inner-page header) */
.site-header[data-scrolled="true"],.site-header--solid{background:var(--paper);border-bottom-color:var(--line)}
.site-header[data-scrolled="true"] .brand,.site-header--solid .brand{color:var(--ink)}
.site-header[data-scrolled="true"] .nav-link,.site-header--solid .nav-link{color:var(--ink-60)}
.site-header[data-scrolled="true"] .nav-link:hover,.site-header[data-scrolled="true"] .nav-link[aria-current="page"],
.site-header--solid .nav-link:hover,.site-header--solid .nav-link[aria-current="page"]{color:var(--ink)}
.site-header[data-scrolled="true"] .nav-cta,.site-header--solid .nav-cta{background:var(--accent);color:var(--on-dark);border-color:var(--accent)}
.site-header[data-scrolled="true"] .nav-cta:hover,.site-header--solid .nav-cta:hover{background:var(--accent-deep);border-color:var(--accent-deep)}

.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:2.75rem;height:2.75rem;margin-right:-.6rem}
.nav-toggle__bar{display:block;width:1.65rem;height:2px;background:var(--on-dark);transition:transform var(--ui) var(--ease),opacity var(--ui) var(--ease),background var(--ui) var(--ease)}
.site-header[data-scrolled="true"] .nav-toggle__bar,.site-header--solid .nav-toggle__bar{background:var(--ink)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar{background:var(--on-dark)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Hero ============================================================== */
.hero{
  position:relative;display:flex;align-items:center;justify-content:center;text-align:center;
  min-height:100vh; min-height:100svh;
  padding:calc(var(--header-h) + var(--space-2xl)) var(--gutter) var(--space-2xl);
  color:var(--on-dark);background:var(--accent-deep);overflow:hidden;
}
.hero__media{position:absolute;inset:-12% 0;z-index:0;will-change:transform}
.hero__media video,.hero__media img{width:100%;height:100%;object-fit:cover}
.hero__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,10,11,.45),rgba(10,10,11,.5) 55%,rgba(10,10,11,.7))}
.hero__inner{position:relative;z-index:1;max-width:min(62rem,92vw);margin-inline:auto}
.hero__eyebrow{color:var(--on-dark-70);margin-bottom:var(--space-md)}
.hero__title{color:var(--on-dark)}
.hero__title em{font-style:italic}
.hero__lead{margin:var(--space-lg) auto 0;max-width:46ch;color:var(--on-dark-70)}
.hero__actions{display:flex;flex-wrap:wrap;gap:var(--space-sm);justify-content:center;margin-top:var(--space-xl)}

@media (prefers-reduced-motion:no-preference){
  .hero__media video,.hero__media img{transform:scale(1.07);animation:heroZoom 12s var(--ease) forwards}
}
@keyframes heroZoom{to{transform:scale(1)}}

/* ===== Inner-page hero (no video; under a solid header) =================== */
.page-hero{padding-top:calc(var(--header-h) + clamp(2.5rem,7vw,6rem));padding-bottom:clamp(1.5rem,4vw,3rem)}
.page-hero__title{max-width:18ch}
.page-hero .lead{margin-top:var(--space-lg);max-width:48ch;color:var(--ink-60)}

/* ===== Centered statement ================================================ */
.statement-section{text-align:center}
.statement{margin-inline:auto;max-width:20ch}
.statement-section .btn{margin-top:var(--space-xl)}

/* ===== Two-column (label / big text) ===================================== */
.cols{display:grid;gap:var(--space-lg)}
.cols__big{max-width:30ch}
.cols__big p + p{margin-top:1em}
@media (min-width:900px){
  .cols{grid-template-columns:minmax(0,1fr) minmax(0,1.5fr);gap:clamp(2rem,6vw,6rem)}
}

/* ===== Cards ============================================================= */
.cards{display:grid;gap:var(--gap);grid-template-columns:1fr;margin-top:var(--space-xl)}
@media (min-width:720px){.cards{grid-template-columns:repeat(2,1fr)}}
.card{
  position:relative;isolation:isolate;display:flex;flex-direction:column;justify-content:space-between;
  min-height:clamp(20rem,26vw,23rem);border-radius:var(--radius);overflow:hidden;
  color:var(--on-dark);background:var(--accent-deep);
  transition:transform var(--ui) var(--ease);
}
.card:hover{transform:translateY(-4px)}
.card:nth-child(2){background:var(--accent)}
.card:nth-child(3){background:var(--ink)}
.card__img{position:absolute;inset:0;z-index:-2;width:100%;height:100%;object-fit:cover}
.card::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(10,10,11,.05),rgba(10,10,11,.45))}
.card__title{padding:var(--space-md) var(--space-md) 0;font-family:var(--font-display);font-size:var(--fs-h3);font-weight:400;letter-spacing:-.012em;line-height:1.1}
.card__note{padding:var(--space-2xs) var(--space-md) 0;color:var(--on-dark-70);font-size:1rem}
.card__action{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-top:var(--space-md);padding:var(--space-md);border-top:1px solid var(--line-dark);font-weight:500}
.card__action svg{width:1em;height:1em;flex:none;transition:transform var(--ui) var(--ease)}
.card:hover .card__action svg{transform:translateX(.25em)}

/* ===== Feature (dark full-width break) =================================== */
.feature{
  position:relative;overflow:hidden;color:var(--on-dark);background:var(--accent-deep);
  display:flex;align-items:center;text-align:center;min-height:78svh;
  padding-block:var(--section-y);
}
.feature__media{position:absolute;inset:0;z-index:0}
.feature__media video,.feature__media img{width:100%;height:100%;object-fit:cover}
.feature::before{content:"";position:absolute;inset:0;z-index:0;background:linear-gradient(180deg,rgba(10,27,61,.55),rgba(10,27,61,.78))}
.feature .container{position:relative;z-index:1}
.feature__title{max-width:18ch;margin-inline:auto;color:var(--on-dark)}
.feature .btn{margin-top:var(--space-xl)}

/* ===== Where we are now ================================================== */
.now__item{display:grid;gap:.3rem;padding-block:var(--space-lg);border-top:1px solid var(--line)}
.now__item:last-child{border-bottom:1px solid var(--line)}
.now__item p{color:var(--ink-60);max-width:60ch}
@media (min-width:760px){
  .now__item{grid-template-columns:minmax(0,18rem) minmax(0,1fr);gap:clamp(1.5rem,4vw,4rem);align-items:baseline}
}

/* ===== Footer ============================================================ */
.site-footer{background:var(--ink);color:var(--on-dark-70);padding-block:var(--space-2xl) var(--space-xl)}
.site-footer a{color:var(--on-dark-70);transition:color var(--ui) var(--ease)}
.site-footer a:hover{color:var(--on-dark)}
.footer-grid{display:grid;gap:var(--space-xl);grid-template-columns:1fr}
.footer-brand{font-family:var(--font-display);font-size:clamp(2rem,1rem + 4vw,3.5rem);font-weight:400;letter-spacing:-.018em;color:var(--on-dark);max-width:16ch;line-height:1.05}
.footer-cols{display:grid;gap:var(--space-xl) var(--space-lg);grid-template-columns:1fr 1fr}
.footer-col h2{font-size:var(--fs-small);font-weight:500;letter-spacing:.02em;text-transform:uppercase;color:var(--on-dark);margin-bottom:var(--space-md)}
.footer-col li + li{margin-top:.6rem}
.footer-col address{font-style:normal;line-height:1.7;margin-top:var(--space-md)}
.footer-legal{display:flex;flex-wrap:wrap;gap:var(--space-xs) var(--space-lg);justify-content:space-between;margin-top:var(--space-2xl);padding-top:var(--space-lg);border-top:1px solid var(--line-dark);font-size:var(--fs-small)}
@media (min-width:760px){
  .footer-grid{grid-template-columns:1.3fr 1fr;align-items:start;gap:clamp(2rem,6vw,6rem)}
  .footer-cols{grid-template-columns:1fr 1fr}
}

/* ===== Marquee ============================================================ */
.marquee{border-block:1px solid var(--line);padding-block:clamp(1.25rem,2.5vw,2rem);overflow:hidden}
.marquee__track{display:flex;align-items:center;gap:clamp(1.5rem,3vw,3rem);width:max-content;will-change:transform;animation:marquee 34s linear infinite}
.marquee__track span{display:inline-flex;align-items:center;gap:clamp(1.5rem,3vw,3rem);white-space:nowrap;font-size:clamp(1.5rem,1rem + 2.4vw,2.75rem);font-weight:500;letter-spacing:-.025em;color:var(--ink)}
.marquee__track span::after{content:"";width:.5rem;height:.5rem;border-radius:50%;background:var(--gold);flex:none}
.marquee:hover .marquee__track{animation-play-state:paused}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ===== Principles ========================================================= */
.principles{display:grid;gap:var(--space-lg);grid-template-columns:1fr;margin-top:var(--space-xl)}
@media (min-width:760px){.principles{grid-template-columns:repeat(3,1fr);gap:clamp(1.5rem,3vw,3rem)}}
.principle{border-top:1px solid var(--line);padding-top:var(--space-md)}
.principle__n{font-size:var(--fs-small);font-weight:500;letter-spacing:.06em;color:var(--accent)}
.principle h3{margin-top:var(--space-lg);font-size:var(--fs-h3);letter-spacing:-.02em}
.principle p{margin-top:var(--space-sm);color:var(--ink-60);max-width:34ch}

/* ===== Decorative rings (signal / "core" artifact) ======================== */
.rings{position:absolute;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.rings svg{position:absolute;top:50%;left:50%;width:min(150vh,1500px);height:min(150vh,1500px);transform:translate(-50%,-50%)}
.rings circle{fill:none;stroke:var(--line-dark);stroke-width:.25}
@media (prefers-reduced-motion:no-preference){
  .rings circle{transform-box:fill-box;transform-origin:center;animation:ringPulse 7s ease-in-out infinite}
  .rings circle:nth-child(2){animation-delay:1.3s}
  .rings circle:nth-child(3){animation-delay:2.6s}
  .rings circle:nth-child(4){animation-delay:3.9s}
}
@keyframes ringPulse{0%,100%{opacity:.2}50%{opacity:.55}}

/* ===== Gold-dot list ===================================================== */
.list{display:grid;gap:.8rem;margin-top:var(--space-lg);max-width:54ch}
.list li{position:relative;padding-left:1.5rem;color:var(--ink-60)}
.list li::before{content:"";position:absolute;left:0;top:.62em;width:.45rem;height:.45rem;border-radius:50%;background:var(--gold)}

/* ===== Light panels (bordered, no shadow) =============================== */
.panels{display:grid;gap:var(--gap);grid-template-columns:1fr;margin-top:var(--space-xl)}
@media (min-width:760px){.panels{grid-template-columns:repeat(3,1fr)}}
.panel{border:1px solid var(--line);border-radius:var(--radius);padding:clamp(1.5rem,3vw,2.25rem);background:var(--paper);transition:border-color var(--ui) var(--ease)}
.panel:hover{border-color:var(--ink-45)}
.panel__mark{width:1.75rem;height:2px;background:var(--gold);margin-bottom:var(--space-lg)}
.panel h3{font-size:var(--fs-h3);letter-spacing:-.012em}
.panel p{margin-top:var(--space-sm);color:var(--ink-60)}

/* ===== Editorial quote =================================================== */
.quote{max-width:24ch;border-left:2px solid var(--gold);padding-left:clamp(1.25rem,3vw,2.5rem)}
.quote p{font-family:var(--font-display);font-style:italic;font-weight:400;font-size:clamp(1.875rem,1rem + 3.2vw,3.25rem);line-height:1.18;letter-spacing:-.015em;color:var(--ink)}
.quote footer{margin-top:var(--space-md);font-family:var(--font);font-style:normal;font-size:var(--fs-small);font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-60)}

/* ===== Contact details =================================================== */
.contact-detail + .contact-detail{margin-top:var(--space-xl)}
.contact-detail h2{font-family:var(--font);font-size:var(--fs-small);font-weight:500;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-60);margin-bottom:var(--space-2xs)}
.contact-detail a{color:var(--accent)}
.contact-detail a:hover{color:var(--accent-deep)}
.contact-email{font-family:var(--font-display);font-size:clamp(1.5rem,1rem + 1.8vw,2.25rem);letter-spacing:-.01em;line-height:1.2}
.contact-detail address{font-style:normal;font-size:var(--fs-lg);line-height:1.6;color:var(--ink)}

.email-xl{display:inline-block;font-family:var(--font-display);font-size:clamp(2.25rem,1rem + 5vw,4.5rem);letter-spacing:-.02em;line-height:1.08;color:var(--accent);transition:color var(--ui) var(--ease)}
.email-xl:hover{color:var(--accent-deep)}

/* ===== Reveals (gated by .js + motion-OK; no-JS shows everything) ======== */
@media (prefers-reduced-motion:no-preference){
  .js [data-reveal]{opacity:0;transform:translateY(72px);transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);transition-delay:var(--reveal-delay,0ms)}
  .js [data-reveal].is-visible{opacity:1;transform:none}
}

/* ===== Mobile nav (<=820px) ============================================== */
@media (max-width:820px){
  html.js .nav-toggle{display:flex}
  html.js .nav-menu{
    position:fixed;inset:0;z-index:90;flex-direction:column;justify-content:center;align-items:flex-start;
    gap:var(--space-md);padding:var(--gutter);background:var(--ink);
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-1rem);
    transition:opacity var(--ui) var(--ease),transform var(--ui) var(--ease),visibility var(--ui);
  }
  html.js .nav-menu[data-open="true"]{opacity:1;visibility:visible;pointer-events:auto;transform:none}
  html.js .nav-menu .nav-link{font-size:var(--fs-h2);color:var(--on-dark)}
  html.js .nav-menu .nav-link[aria-current="page"]{color:var(--on-dark)}
  html.js .nav-menu .nav-cta{background:var(--paper);color:var(--ink);border-color:var(--paper);font-size:var(--fs-h3);padding:.5em 1em}
  body.nav-open{overflow:hidden}
  body.nav-open .site-header{background:transparent;border-color:transparent}
  body.nav-open .brand{color:var(--on-dark)}
  body.nav-open .nav-toggle__bar{background:var(--on-dark)}
  html:not(.js) .nav-menu{flex-wrap:wrap;gap:var(--space-sm) var(--space-md)}
}

/* ===== Reduced motion ==================================================== */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}