/* BrightNest — warm family theme. Dark-mode-ready CSS variable architecture. */

:root{
  --bg:#FFF9F2;
  --bg-soft:#FFF3E4;
  --card:#FFFFFF;
  --ink:#4A3428;
  --ink-soft:#7A5F4C;
  --muted:#A08064;
  --line:#F1E3D0;
  --brand:#E0784A;
  --brand-deep:#C05B32;
  --brand-soft:#FBE3D2;
  --gold:#F2A93B;
  --gold-soft:#FCEFC9;
  --sage:#8FA98F;
  --sage-soft:#E6F0E4;
  --rose:#E8A0A0;
  --rose-soft:#FBE7E4;
  --header-bg:rgba(255,249,242,.82);
  --shadow:0 10px 30px rgba(192,91,50,.10);
  --shadow-lg:0 18px 50px rgba(192,91,50,.16);
  --radius:20px;
  --font-display:"Bagel Fat One",system-ui,cursive;
  --font-body:"Nunito",system-ui,-apple-system,"Segoe UI",sans-serif;
}

/* Dark mode: full variable swap, ready for instant theme switching */
[data-theme="dark"]{
  --bg:#241A13;
  --bg-soft:#2C2016;
  --card:#33261B;
  --ink:#F7EADA;
  --ink-soft:#D9BFA6;
  --muted:#A98F74;
  --line:#4A382A;
  --brand:#F0925C;
  --brand-deep:#E0784A;
  --brand-soft:#4A2E1E;
  --gold:#F2B95C;
  --gold-soft:#4A3A1E;
  --sage:#9DBE9D;
  --sage-soft:#2E3D2A;
  --rose:#D98F8F;
  --rose-soft:#4A2A28;
  --header-bg:rgba(36,26,19,.82);
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --shadow-lg:0 18px 50px rgba(0,0,0,.45);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--ink);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  transition:background .35s ease,color .35s ease;
}
body.locked{overflow:hidden}

h1,h2,h3,.font-display{font-family:var(--font-display);font-weight:400;line-height:1.15;letter-spacing:.01em}
h1{font-size:clamp(2.6rem,7vw,4.8rem)}
h2{font-size:clamp(1.9rem,4.5vw,2.9rem);margin:.4em 0 .5em}
h3{font-size:clamp(1.15rem,2.4vw,1.4rem)}
.subhead{font-size:clamp(1.3rem,2.8vw,1.6rem);margin:2.2em 0 .8em}

.container{max-width:1120px;margin:0 auto;padding:0 22px}
.section{padding:clamp(64px,9vw,110px) 0;scroll-margin-top:76px}
.section-soft{background:var(--bg-soft)}
.kicker{
  display:inline-block;font-weight:800;font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-deep);background:var(--brand-soft);
  padding:.45em 1.1em;border-radius:999px;margin:0 0 1em;
}
.section-lead{max-width:640px;color:var(--ink-soft);font-size:1.08rem}
.fine-print{font-size:.82em;color:var(--muted)}

/* ---------- header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:60;
  background:transparent;transition:background .3s ease,box-shadow .3s ease,backdrop-filter .3s ease;
}
.site-header.scrolled{
  background:var(--header-bg);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:0 4px 24px rgba(192,91,50,.10);
}
.header-inner{
  max-width:1180px;margin:0 auto;padding:14px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand-mark{font-size:1.7rem}
.brand-name{font-family:var(--font-display);font-size:1.45rem}
.desktop-nav{display:flex;align-items:center;gap:26px}
.desktop-nav a{
  text-decoration:none;color:var(--ink-soft);font-weight:700;font-size:.98rem;
  transition:color .2s;
}
.desktop-nav a:hover{color:var(--brand-deep)}
.nav-cta{
  background:var(--brand);color:#fff!important;
  padding:.55em 1.3em;border-radius:999px;box-shadow:var(--shadow);
}
.nav-cta:hover{background:var(--brand-deep)}
.header-actions{display:flex;align-items:center;gap:10px}
.theme-toggle{
  border:1px solid var(--line);background:var(--card);color:var(--ink);
  width:42px;height:42px;border-radius:50%;font-size:1.15rem;cursor:pointer;
  display:grid;place-items:center;transition:transform .25s;
}
.theme-toggle:hover{transform:rotate(18deg)}

/* hamburger */
.hamburger{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:var(--card);cursor:pointer;padding:0 11px;
}
.hamburger span{display:block;height:2.5px;border-radius:2px;background:var(--ink);transition:transform .3s,opacity .3s}
.hamburger.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

/* mobile slide-in panel */
.mobile-panel{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:70;
  background:var(--card);box-shadow:var(--shadow-lg);
  transform:translateX(105%);
  transition:transform .45s cubic-bezier(.22,1.2,.36,1);
  padding:96px 30px 30px;
  border-radius:24px 0 0 24px;
}
.mobile-panel.open{transform:translateX(0)}
.mobile-panel nav{display:flex;flex-direction:column;gap:6px}
.mobile-panel nav a{
  text-decoration:none;color:var(--ink);font-weight:800;font-size:1.25rem;
  padding:.7em .4em;border-bottom:1px solid var(--line);
}
.mobile-panel nav a.nav-cta{border:none;text-align:center;margin-top:14px;color:#fff}
.panel-scrim{
  position:fixed;inset:0;z-index:65;background:rgba(74,52,40,.35);
  opacity:0;pointer-events:none;transition:opacity .3s;
}
.panel-scrim.show{opacity:1;pointer-events:auto}

/* ---------- hero ---------- */
.hero{
  position:relative;min-height:100svh;
  display:flex;align-items:center;justify-content:center;text-align:center;
  overflow:hidden;color:#FFF8EE;
}
.hero-video{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(58,32,18,.42) 0%,rgba(58,32,18,.18) 40%,rgba(58,32,18,.55) 100%),
             radial-gradient(120% 90% at 50% 110%,rgba(240,120,74,.28),transparent 60%);
}
.hero-content{position:relative;z-index:2;max-width:820px;padding:120px 22px 80px}
.hero-badge{
  display:inline-block;background:rgba(255,248,238,.16);border:1px solid rgba(255,248,238,.35);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  padding:.55em 1.4em;border-radius:999px;font-weight:700;font-size:.95rem;margin:0 0 1.4em;
}
.hero h1{margin:0 0 .35em;text-shadow:0 4px 30px rgba(58,32,18,.45)}
.hero-sub{font-size:clamp(1.05rem,2.4vw,1.3rem);font-weight:600;opacity:.94;max-width:600px;margin:0 auto 2em}
.hero-ctas{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.btn{
  display:inline-block;text-decoration:none;font-weight:800;font-size:1.02rem;
  padding:.85em 1.9em;border-radius:999px;border:none;cursor:pointer;
  transition:transform .2s,box-shadow .2s,background .2s;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 28px rgba(224,120,74,.4)}
.btn-primary:hover{background:var(--brand-deep)}
.btn-ghost{
  background:rgba(255,248,238,.14);color:#FFF8EE;
  border:1.5px solid rgba(255,248,238,.55);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.scroll-hint{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;
  color:#FFF8EE;text-decoration:none;font-size:1.6rem;opacity:.85;
  animation:bob 2.2s ease-in-out infinite;
}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,10px)}}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,64px);align-items:center}
.about-text p{color:var(--ink-soft)}
.pillars{display:flex;flex-wrap:wrap;gap:10px;margin-top:1.4em}
.pillar{
  background:var(--gold-soft);color:var(--ink);font-weight:800;font-size:.92rem;
  padding:.5em 1.1em;border-radius:999px;border:1px solid var(--line);
}
.about-media img,.feature-img{
  width:100%;height:auto;border-radius:var(--radius);box-shadow:var(--shadow-lg);
  aspect-ratio:4/3;object-fit:cover;display:block;
}

/* ---------- cards & grids ---------- */
.card-grid{
  display:grid;gap:20px;margin-top:2.2em;
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;box-shadow:var(--shadow);
  transition:transform .25s,box-shadow .25s;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.card-icon{font-size:2.4rem;margin-bottom:.4em}
.card h3{margin:.2em 0 .5em}
.card p{color:var(--ink-soft);font-size:.98rem;margin:0 0 1em}
.card-tag{
  display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.06em;
  background:var(--sage-soft);color:var(--ink-soft);padding:.35em 1em;border-radius:999px;
}

.feature-split{
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,48px);
  align-items:center;margin-top:2.2em;
}
.feature-split.reverse>.feature-img{order:2}
.mini-cards{display:flex;flex-direction:column;gap:14px}
.mini-card{
  display:flex;gap:16px;background:var(--card);border:1px solid var(--line);
  border-radius:18px;padding:18px 20px;box-shadow:var(--shadow);
}
.mini-icon{font-size:2rem;line-height:1.2}
.mini-card h3{margin:0 0 .3em}
.mini-card p{margin:0;color:var(--ink-soft);font-size:.96rem}

.share-note{
  margin-top:2em;background:var(--gold-soft);border:1px dashed var(--gold);
  border-radius:18px;padding:20px 24px;display:flex;gap:14px;align-items:flex-start;
}
.share-label{font-weight:800;white-space:nowrap}
.share-note p{margin:0;font-style:italic;color:var(--ink-soft)}

/* ---------- love map deck ---------- */
.deck-controls{display:flex;align-items:center;gap:18px;margin:1.8em 0 1.4em;flex-wrap:wrap}
.deck-count{color:var(--muted);font-weight:700;margin:0}
.deck{
  display:grid;gap:18px;
  grid-template-columns:repeat(auto-fill,minmax(240px,1fr));
}
.love-card{perspective:900px;cursor:pointer;min-height:210px}
.love-inner{
  position:relative;width:100%;height:100%;min-height:210px;
  transform-style:preserve-3d;transition:transform .6s cubic-bezier(.3,1.3,.4,1);
}
.love-card.flipped .love-inner{transform:rotateY(180deg)}
.love-face{
  position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;
  border-radius:var(--radius);display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:24px;text-align:center;box-shadow:var(--shadow);
}
.love-front{background:linear-gradient(135deg,var(--brand),var(--gold));color:#fff}
.love-front .deck-emoji{font-size:2.6rem;margin-bottom:.3em}
.love-front p{font-weight:800;margin:0}
.love-back{
  background:var(--card);border:1px solid var(--line);color:var(--ink);
  transform:rotateY(180deg);font-size:1.02rem;font-weight:600;
}
.love-back small{display:block;margin-top:1em;color:var(--muted);font-weight:700;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase}
.deck-hint{text-align:center;color:var(--muted);margin-top:1.6em;font-weight:600}

/* ---------- chinese resources ---------- */
.resource-grid{
  display:grid;gap:18px;margin-top:1.6em;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
}
.resource-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:.5em;
  transition:transform .25s,box-shadow .25s;text-decoration:none;color:var(--ink);
}
a.resource-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.resource-card h3{margin:0;display:flex;align-items:center;gap:.5em}
.resource-card p{margin:0;color:var(--ink-soft);font-size:.95rem;flex:1}
.resource-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:.4em}
.resource-meta span{
  font-size:.76rem;font-weight:800;background:var(--rose-soft);color:var(--ink-soft);
  padding:.3em .9em;border-radius:999px;
}
.resource-link{font-weight:800;color:var(--brand-deep);font-size:.92rem}

/* ---------- connect ---------- */
.connect-wrap{text-align:center}
.connect-wrap .section-lead{margin:0 auto}
.social-grid{
  display:grid;gap:16px;margin:2.4em auto 0;max-width:860px;
  grid-template-columns:repeat(auto-fit,minmax(160px,1fr));
}
.social-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 14px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow);
  display:flex;flex-direction:column;gap:6px;align-items:center;
  transition:transform .25s,box-shadow .25s;
}
.social-card:hover{transform:translateY(-5px) scale(1.02);box-shadow:var(--shadow-lg)}
.social-icon{font-size:2.2rem}
.social-card span:nth-child(2){font-weight:800}
.social-card small{color:var(--muted);font-weight:600}

.newsletter{
  margin:3em auto 0;max-width:860px;background:var(--card);border:1px solid var(--line);
  border-radius:24px;padding:clamp(24px,4vw,40px);box-shadow:var(--shadow-lg);
  display:flex;gap:24px;align-items:center;text-align:left;flex-wrap:wrap;
}
.newsletter-text{flex:1 1 280px}
.newsletter-text h3{margin:0 0 .4em}
.newsletter-text p{margin:0;color:var(--ink-soft)}
.newsletter-form{flex:1 1 320px;display:flex;gap:10px}
.newsletter-form input{
  flex:1;border:1.5px solid var(--line);border-radius:999px;padding:.85em 1.3em;
  font-family:inherit;font-size:1rem;background:var(--bg);color:var(--ink);min-width:0;
}
.newsletter-form input:focus{outline:2px solid var(--brand);border-color:var(--brand)}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:44px 0}
.footer-inner{text-align:center;display:flex;flex-direction:column;gap:10px;align-items:center}
.footer-brand{font-family:var(--font-display);font-size:1.3rem;margin:0}
.footer-note{color:var(--muted);font-size:.92rem;margin:0}
.footer-nav{display:flex;gap:22px;flex-wrap:wrap;justify-content:center}
.footer-nav a{color:var(--ink-soft);text-decoration:none;font-weight:700;font-size:.95rem}
.footer-nav a:hover{color:var(--brand-deep)}

/* ---------- toast ---------- */
.toast{
  position:fixed;bottom:26px;left:50%;transform:translate(-50%,80px);z-index:90;
  background:var(--ink);color:var(--bg);font-weight:700;
  padding:.9em 1.8em;border-radius:999px;box-shadow:var(--shadow-lg);
  transition:transform .4s cubic-bezier(.2,1.2,.4,1);max-width:88vw;text-align:center;
}
.toast.show{transform:translate(-50%,0)}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .desktop-nav{display:none}
  .hamburger{display:flex}
  .about-grid,.feature-split{grid-template-columns:1fr}
  .feature-split.reverse>.feature-img{order:0}
  .newsletter-form{flex-direction:column}
  .newsletter-form .btn{width:100%}
}
@media (max-width:520px){
  .hero-ctas .btn{width:100%;text-align:center}
  .deck-controls{justify-content:center;text-align:center}
  .brand-name{font-size:1.12rem}
  .brand-mark{font-size:1.35rem}
  .header-inner{padding:10px 14px;gap:8px}
  .theme-toggle{width:38px;height:38px;font-size:1rem}
  .hamburger{width:40px;height:40px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}

/* ---------- NestBot: preset Q&A widget ---------- */
.nestbot-fab{position:fixed;right:22px;bottom:22px;z-index:75;width:58px;height:58px;border-radius:50%;border:none;background:var(--brand);color:#fff;font-size:26px;cursor:pointer;box-shadow:var(--shadow-lg);transition:transform .2s ease,background .2s ease}
.nestbot-fab:hover{transform:scale(1.07);background:var(--brand-deep)}
.nestbot-panel{position:fixed;right:22px;bottom:92px;z-index:76;width:min(370px,calc(100vw - 32px));max-height:min(560px,calc(100vh - 130px));display:none;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-lg);overflow:hidden}
.nestbot-panel.open{display:flex}
.nestbot-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;background:var(--brand-soft);border-bottom:1px solid var(--line)}
.nestbot-title{display:flex;align-items:center;gap:10px}
.nestbot-avatar{font-size:26px}
.nestbot-title strong{font-family:var(--font-display);font-weight:400;letter-spacing:.3px;display:block;line-height:1.25;font-size:17px}
.nestbot-title small{color:var(--muted);font-size:11px}
.nestbot-close{border:none;background:none;font-size:15px;color:var(--ink-soft);cursor:pointer;padding:8px}
.nestbot-body{padding:14px;overflow-y:auto;display:flex;flex-direction:column;gap:10px;min-height:230px}
.nestbot-msg{max-width:88%;padding:9px 13px;border-radius:16px;font-size:14px;line-height:1.55}
.nestbot-msg.bot{background:var(--bg-soft);color:var(--ink);border-bottom-left-radius:6px;align-self:flex-start}
.nestbot-msg.user{background:var(--brand);color:#fff;border-bottom-right-radius:6px;align-self:flex-end}
.nestbot-chips{padding:10px 12px 14px;display:flex;flex-wrap:wrap;gap:8px;border-top:1px solid var(--line);max-height:200px;overflow-y:auto;background:var(--bg)}
.nestbot-chip{border:1px solid var(--brand);background:var(--card);color:var(--brand-deep);border-radius:999px;padding:7px 13px;font-size:13px;font-weight:700;cursor:pointer;font-family:var(--font-body);transition:background .15s ease;text-align:left}
.nestbot-chip:hover{background:var(--brand-soft)}
.nestbot-chip.back{border-color:var(--line);color:var(--ink-soft)}
@media (max-width:520px){.nestbot-fab{right:14px;bottom:14px}.nestbot-panel{right:12px;bottom:84px}}

/* ---------- quote strip (Gottman workbook excerpts) ---------- */
.quote-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:34px}
.quote-card{margin:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 18px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px}
.quote-card blockquote{margin:0;font-family:var(--font-display);font-size:16.5px;line-height:1.6;color:var(--ink);letter-spacing:.2px}
.quote-card blockquote::before{content:"“";color:var(--brand);font-size:1.4em;line-height:0;margin-right:2px}
.quote-card figcaption{font-size:12.5px;color:var(--muted);margin-top:auto}
.quote-card cite{font-style:normal;font-weight:700;color:var(--ink-soft)}
.quote-note{text-align:center;margin-top:14px}
@media (max-width:760px){.quote-strip{grid-template-columns:1fr}}