:root{--bg:#f5f7fb;--surface:#fff;--ink:#172033;--muted:#667085;--line:#e5e7eb;--accent:#5146e5;--soft:#eef2ff;--success:#087443;--danger:#b42318;--shadow:0 10px 30px rgba(16,24,40,.06)}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 Inter,system-ui,-apple-system,Segoe UI,sans-serif}
button,input,textarea,select{font:inherit}.top{height:64px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.topin{max-width:1280px;margin:auto;height:100%;display:flex;align-items:center;gap:18px;padding:0 20px}.brand{font-weight:900;font-size:24px;letter-spacing:-.5px}.brand span{font-weight:500;color:var(--muted);font-size:12px;margin-left:7px}.search{width:min(360px,35vw);margin-left:auto;padding:10px 13px;border:1px solid var(--line);border-radius:12px;background:#fafafa}.avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--soft);font-weight:800}
.shell{max-width:1280px;margin:20px auto;display:grid;grid-template-columns:220px minmax(0,1fr) 250px;gap:18px;padding:0 20px}.sidebar,.right{position:sticky;top:84px;height:max-content}.nav{display:flex;width:100%;gap:10px;align-items:center;border:0;background:transparent;border-radius:12px;padding:11px 12px;text-align:left;cursor:pointer;color:var(--ink)}.nav:hover,.nav.active{background:var(--soft)}.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:18px;margin-bottom:15px}.hero{padding:28px}.hero h1{font-size:34px;line-height:1.1;margin:0 0 8px;letter-spacing:-1px}.muted{color:var(--muted)}.small{font-size:13px}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.stat{padding:15px;border:1px solid var(--line);border-radius:14px}.stat b{font-size:23px;display:block}.pill{display:inline-block;background:var(--soft);padding:4px 9px;border-radius:999px;font-size:12px;margin:2px}.btn{border:0;background:var(--accent);color:#fff;border-radius:10px;padding:9px 13px;cursor:pointer}.btn.secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}.btn.danger{background:#fff;color:var(--danger);border:1px solid #f3c4c0}.item{border:1px solid var(--line);border-radius:14px;padding:14px;margin:10px 0}.item h3{margin:0 0 5px}.row{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.row .grow{flex:1}.composer textarea{min-height:90px}.composer input,.composer textarea,.composer select,.settings input,.settings textarea,.settings select{width:100%;padding:10px;border:1px solid var(--line);border-radius:10px;margin:5px 0 10px;background:#fff}.empty{text-align:center;padding:35px;color:var(--muted)}.notice{background:#fafbff;border:1px solid var(--line);border-radius:13px;padding:12px}.treecanvas{height:500px;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:radial-gradient(circle at center,#fff,#f8f9fd)}svg{width:100%;height:100%}.node circle{fill:#fff;stroke:var(--accent);stroke-width:2}.node text{font-size:12px;text-anchor:middle}.link{stroke:#a7afc2;stroke-width:1.5}.timeline{position:relative;margin:15px 0;padding-left:28px;border-left:2px solid #d9def0}.timeline .dot{position:absolute;left:-7px;width:12px;height:12px;border-radius:50%;background:var(--accent)}.toast{position:fixed;right:20px;bottom:20px;background:#101828;color:#fff;padding:12px 16px;border-radius:12px;z-index:50;box-shadow:var(--shadow)}
@media(max-width:1050px){.shell{grid-template-columns:200px minmax(0,1fr)}.right{display:none}}
@media(max-width:720px){.shell{display:block;padding:0 12px}.sidebar{position:static;display:flex;overflow:auto;margin-bottom:12px}.nav{white-space:nowrap;width:auto}.topin{padding:0 12px}.brand span{display:none}.search{width:150px}.grid2,.grid3{grid-template-columns:1fr}.hero h1{font-size:28px}}

:focus-visible{outline:3px solid #5146e5;outline-offset:2px}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.001ms!important;transition-duration:.001ms!important}}

.tree-legend{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:10px;padding:10px 12px;border:1px solid #e7eaf0;border-radius:10px;background:#fafbfc}.tree-legend .small{display:block}

/* V22 public-first landing and Living Legacy surfaces */
.public-app{max-width:1180px;margin:0 auto;padding:30px 20px}.landing-hero{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch;padding:55px 0 35px}.landing-copy{padding:20px 0}.eyebrow{font-size:12px;font-weight:800;letter-spacing:1.5px;color:var(--accent);margin-bottom:12px}.landing-copy h1{font-size:clamp(42px,6vw,72px);line-height:.98;letter-spacing:-3px;margin:0 0 20px;max-width:760px}.landing-copy h1 span{color:var(--accent)}.lead{font-size:19px;line-height:1.65;color:#475467;max-width:690px}.landing-actions{display:flex;gap:10px;margin:24px 0}.legacy-loop-card{background:linear-gradient(145deg,#171b2b,#303762);color:#fff;border-radius:26px;padding:30px;box-shadow:0 20px 50px rgba(16,24,40,.16);display:flex;flex-direction:column;justify-content:center}.loop-title{font-size:12px;letter-spacing:1.4px;font-weight:800;opacity:.75}.loop-grid{display:grid;grid-template-columns:auto 1fr auto 1fr auto 1fr auto 1fr auto;align-items:center;gap:10px;margin:30px 0;font-size:13px}.loop-grid span{text-align:center;opacity:.55}.legacy-loop-card p{opacity:.8;line-height:1.6}.landing-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.feature{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}.feature:last-child{border-bottom:0}.feature b{min-width:85px}.feature span{color:var(--muted)}.public-search-row{display:flex;gap:8px;margin:10px 0 15px}.public-search-row input{flex:1;padding:12px;border:1px solid var(--line);border-radius:10px}.public-results h3{margin:18px 0 8px}.public-person{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}.public-item{padding:14px 0;border-bottom:1px solid var(--line)}.public-item:last-child{border-bottom:0}.public-item h3{margin:4px 0}.public-item p{white-space:pre-wrap;color:#475467}.public-profile-head{display:flex;gap:16px;align-items:center;margin:15px 0}.public-avatar{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:var(--soft);font-size:24px;font-weight:900;color:var(--accent)}.auth-card{max-width:520px;margin:60px auto}.auth-card h1{font-size:36px}.auth-card label{display:block;font-weight:700;margin-top:12px}.auth-card input{width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;margin:6px 0}.auth-card .btn{margin-top:8px;width:100%}.linkbtn{border:0;background:none;padding:0;color:var(--accent);cursor:pointer}.landing-footer{display:flex;gap:18px;align-items:center;padding:28px 0;color:var(--muted);border-top:1px solid var(--line);margin-top:18px}.landing-footer span{flex:1}.v22-away{border-left:4px solid var(--accent)}.away-row{display:flex;gap:12px;padding:11px 0;border-top:1px solid var(--line)}.away-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);margin-top:7px;flex:none}.cta-card{background:var(--soft)}
@media(max-width:850px){.landing-hero,.landing-grid{grid-template-columns:1fr}.landing-copy h1{letter-spacing:-2px}.loop-grid{grid-template-columns:1fr;gap:8px}.loop-grid span{display:none}.landing-footer{flex-wrap:wrap}}

/* V23 Living Legacy */
.legacy-ripple{border-top:3px solid var(--accent)}.ripple-stats{display:grid;grid-template-columns:1fr;gap:8px;margin-top:10px}.ripple-stats span{padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:#fafbff}.ripple-stats b{margin-right:4px}.legacy-today{min-height:220px}.moment-card{padding:12px 0 8px}.moment-card h3{margin:8px 0 4px}.moment-card p{color:#475467}.legacy-continue .item{margin-top:12px}

/* V24 Memory & Media foundation */
.memory-today{border-top:3px solid var(--accent)}.memory-feature{padding:16px 0}.memory-feature h3{margin:8px 0 4px}.memory-feature p{white-space:pre-wrap;color:#475467}.memory-row{border-top:1px solid var(--line);padding:14px 0}.memory-row h3{margin:5px 0}.memory-row p{white-space:pre-wrap;color:#475467;margin:4px 0}.memory-row:first-of-type{border-top:0}

.story-media{margin:12px 0;border:1px solid #e5e7eb;border-radius:14px;overflow:hidden;background:#fafafa}.story-media img{display:block;width:100%;max-height:420px;object-fit:cover}.story-media video{display:block;width:100%;max-height:420px}.story-media audio{display:block;width:100%;padding:12px}.story-media figcaption{padding:8px 12px;font-size:12px;color:#667085}.media-note{padding:10px 12px;margin:10px 0;border:1px dashed #cbd5e1;border-radius:10px;font-size:13px;color:#667085}.media-draft{margin:10px 0}.media-draft .story-media{max-width:100%}.card label{display:block;margin-top:10px;margin-bottom:5px;font-weight:600}

.public-shell{max-width:1280px;margin:0 auto;display:block;padding:0 20px}.public-shell .public-app{max-width:1180px;margin:0 auto;padding:30px 20px}.auth-card{width:min(100%,620px);margin:36px auto}.auth-card h1{margin-top:14px}.auth-card .btn{width:100%;margin-top:10px}.auth-forgot{display:block;margin:14px auto 4px}.notice code{word-break:break-all}@media(max-width:720px){.public-shell{padding:0 10px}.public-shell .public-app{padding:20px 8px}.auth-card{margin:18px auto}}

/* V33 public presentation, legal footer and developer-controlled identity */
.public-shell{display:block;max-width:1280px;margin:0 auto;padding:0 20px}.public-page{min-height:100vh}.public-topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:14px;padding:14px 18px;margin:0 -20px 12px;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 4px 18px rgba(16,24,40,.04)}.public-brand{font-size:22px;font-weight:900;letter-spacing:-.5px;color:var(--ink);text-decoration:none}.public-tagline{color:var(--muted);font-size:13px}.public-actions{margin-left:auto;display:flex;align-items:center;gap:9px}.public-actions .btn{width:auto;margin:0}.site-footer{margin:28px 0 0;padding:24px 0 18px;border-top:1px solid var(--line);color:var(--muted)}.site-footer-main{display:grid;grid-template-columns:1fr 1fr;gap:28px;padding-bottom:18px}.site-footer-company{display:flex;flex-direction:column;gap:4px;font-size:13px}.site-footer-company b{color:var(--ink);margin-bottom:4px}.site-footer-links{display:flex;gap:15px;align-items:center;flex-wrap:wrap;padding-top:14px;border-top:1px solid var(--line)}.site-footer-links .linkbtn{font-size:13px}.site-footer-links>span{margin-left:auto}.legal-card{max-width:850px;margin:35px auto}.legal-card h1{font-size:34px;letter-spacing:-1px}.auth-card{width:min(100%,620px);margin:38px auto}.auth-card h1{font-size:38px;line-height:1.1}.public-app{padding-top:18px}.landing-hero{padding-top:35px}
@media(max-width:720px){.public-shell{padding:0 10px}.public-topbar{margin:0 -10px 10px;padding:12px 10px;flex-wrap:wrap}.public-tagline{display:none}.public-actions{width:100%;margin-left:0;justify-content:flex-end}.site-footer-main{grid-template-columns:1fr}.site-footer-links>span{margin-left:0;width:100%}.auth-card{margin:18px auto}.landing-hero{padding-top:20px}}

/* V34 profile pictures */
.avatar-image,.profile-picture-preview{width:48px;height:48px;border-radius:50%;object-fit:cover}.avatar{overflow:hidden;display:grid;place-items:center}.avatar .avatar-image{width:100%;height:100%}.avatar-fallback{display:grid;place-items:center;width:100%;height:100%;font-weight:800}.profile-picture-editor{display:flex;gap:18px;align-items:center;margin-top:18px;padding:16px;border:1px solid var(--line);border-radius:16px;background:#fafbff}.profile-picture-preview{width:96px;height:96px;flex:none;border:1px solid var(--line);background:var(--soft);display:grid;place-items:center;font-size:32px;font-weight:900;color:var(--accent);overflow:hidden}.profile-picture-preview .avatar-image{width:100%;height:100%}@media(max-width:600px){.profile-picture-editor{align-items:flex-start;flex-direction:column}}

.language-select{width:190px!important;min-width:190px;}
@media(max-width:760px){.language-select{width:160px!important;min-width:160px;}}

/* V36 Legacy AI Interview + Life Story Builder */
.legacy-interview-hero{background:linear-gradient(135deg,#fff,#f4f5ff)}
.interview-progress{height:8px;background:#eef2f6;border-radius:999px;overflow:hidden;margin-bottom:18px}
.interview-progress div{height:100%;background:var(--accent);border-radius:999px;transition:width .2s ease}
.interview-question h2{font-size:28px;margin:12px 0 6px}
.interview-answer{width:100%;min-height:180px;padding:14px;border:1px solid var(--line);border-radius:14px;resize:vertical;margin:10px 0}
.voice-panel{padding:14px;border:1px dashed #cbd5e1;border-radius:14px;background:#fafbff;margin:12px 0}
.voice-panel audio{width:100%;margin-top:10px}
.interview-actions{justify-content:flex-end;margin-top:12px}
.story-preview,.generated-story{max-width:850px}
.generated-story h2{font-size:30px;margin:8px 0}
.story-section{padding:16px 0;border-top:1px solid var(--line)}
.story-section h3{margin:0 0 6px}
.story-section p{white-space:pre-wrap;color:#475467}
@media(max-width:720px){.interview-question h2{font-size:23px}.interview-actions .btn{flex:1}.legacy-interview-hero h1{font-size:30px}}

.book-hero{background:linear-gradient(135deg,#f6f2ff,#ffffff)}
.book-preview{background:#f3f3f3;padding:24px;border-radius:18px}.book-cover{background:#fff;min-height:520px;padding:70px 50px;display:flex;flex-direction:column;justify-content:center;text-align:center;border:1px solid #ddd;box-shadow:0 10px 30px rgba(0,0,0,.08)}.book-cover h1{font-size:42px;line-height:1.1;margin:20px auto;max-width:650px}.book-cover p{max-width:600px;margin:0 auto}.book-author{margin-top:28px;font-weight:700}.book-pages{background:#fff;margin-top:20px;padding:45px;box-shadow:0 10px 30px rgba(0,0,0,.05)}.book-heading{margin-top:38px;padding-top:18px;border-top:1px solid #ddd}.book-space{height:8px}

/* V41 Legacy Vault */
.vault-card{border:1px solid rgba(80,70,180,.16)}

/* V43 Institutional Legacy */
.institution-hero{background:linear-gradient(135deg,#f7f8ff,#ffffff);border-top:3px solid var(--accent)}.institution-story{padding:14px 0;border-top:1px solid var(--line)}.institution-story:first-child{border-top:0}.institution-story h3{margin:0 0 6px}.institution-story p{white-space:pre-wrap;color:#475467}.institution-type-pill{font-weight:700}

/* V47 visible action confirmation */
.btn.success{background:var(--success);color:#fff;border-color:var(--success)}
.btn:disabled{cursor:default;opacity:.95}
.family-lineage{border-left:3px solid var(--accent);padding-left:14px}

/* V48 welcome + messaging usability */
.welcome-user{color:var(--muted);font-size:13px;white-space:nowrap;margin-left:2px}.welcome-user b{color:var(--ink)}.welcome-hero{border-top:4px solid var(--accent);background:linear-gradient(135deg,#ffffff,#f7f7ff)}.welcome-hero h1{font-size:40px;letter-spacing:-1.5px;margin:8px 0}.welcome-inspiration{font-size:19px;line-height:1.65;color:#344054;max-width:850px}.message-start{margin-top:18px;padding:18px;border:1px solid var(--line);border-radius:16px;background:#fafbff}.message-start h2{margin-top:0}.message-start input{flex:1}.message-start .btn{width:auto}.success{background:var(--success)!important;color:#fff!important;border-color:var(--success)!important}@media(max-width:900px){.welcome-user{display:none}.welcome-hero h1{font-size:32px}}

.notification-badge{display:inline-flex;min-width:18px;height:18px;padding:0 5px;align-items:center;justify-content:center;border-radius:999px;background:#b42318;color:#fff;font-size:11px;font-weight:700;margin-left:4px}.notification-item{display:block;width:100%;text-align:left;border:0;border-bottom:1px solid #e6e9ed;background:transparent;padding:14px 6px;cursor:pointer}.notification-item:hover{background:#f8fafc}.notification-item.unread{background:#eef6fc}.notification-item:last-child{border-bottom:0}

/* =========================================================
   LEGACYRIPPLE V48 — MOBILE EXPERIENCE ENHANCEMENT
   Android + iPhone
   Desktop styles remain unchanged.
   ========================================================= */

@media (max-width: 720px){

  /* ---------- Global mobile sizing ---------- */
  html,
  body{
    width:100%;
    max-width:100%;
    overflow-x:hidden;
    -webkit-text-size-adjust:100%;
  }

  body{
    padding-bottom:env(safe-area-inset-bottom);
  }

  .shell{
    width:100%;
    max-width:100%;
    display:block;
    margin:0 auto;
    padding:10px 10px calc(18px + env(safe-area-inset-bottom));
  }

  .main,
  main,
  .content{
    min-width:0;
    width:100%;
    max-width:100%;
  }

  /* ---------- Header / top bar ---------- */
  .top{
    position:sticky;
    top:0;
    z-index:30;
    padding-top:env(safe-area-inset-top);
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
  }

  .topin{
    min-height:56px;
    padding:8px 10px;
    gap:8px;
  }

  .brand{
    min-width:0;
    flex:0 0 auto;
  }

  .brand img,
  .brand .logo{
    max-width:42px;
    max-height:42px;
  }

  .search{
    width:auto;
    min-width:0;
    flex:1 1 auto;
    max-width:none;
  }

  .search input,
  .search input[type="search"]{
    width:100%;
    min-height:44px;
    font-size:16px;
  }

  /* ---------- Existing mobile sidebar navigation ---------- */
  .sidebar{
    position:sticky;
    top:64px;
    z-index:20;
    display:flex;
    width:calc(100% + 4px);
    margin:0 -2px 12px;
    padding:4px 2px 8px;
    gap:7px;
    overflow-x:auto;
    overflow-y:hidden;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
  }

  .sidebar::-webkit-scrollbar{
    display:none;
  }

  .nav{
    flex:0 0 auto;
    width:auto;
    min-height:44px;
    padding:10px 13px;
    border-radius:12px;
    font-size:14px;
    white-space:nowrap;
    touch-action:manipulation;
  }

  .nav:active,
  .btn:active{
    transform:scale(.98);
  }

  /* ---------- Cards ---------- */
  .card{
    width:100%;
    max-width:100%;
    box-sizing:border-box;
    border-radius:16px;
    padding:15px;
    margin-bottom:12px;
  }

  .hero{
    padding:20px 16px;
  }

  .hero h1,
  .welcome-hero h1{
    font-size:27px;
    line-height:1.16;
    letter-spacing:-.7px;
  }

  h1{
    font-size:27px;
    line-height:1.18;
  }

  h2{
    font-size:21px;
    line-height:1.25;
  }

  h3{
    font-size:18px;
    line-height:1.3;
  }

  p{
    line-height:1.55;
  }

  /* ---------- Buttons / touch targets ---------- */
  .btn,
  button,
  .linkbtn{
    min-height:44px;
    box-sizing:border-box;
    touch-action:manipulation;
  }

  .btn{
    padding:10px 14px;
    font-size:15px;
  }

  .row{
    gap:8px;
  }

  .row > .btn,
  .row > button{
    max-width:100%;
  }

  /* When a row contains several actions, stack them cleanly. */
  .hero > .row,
  .card > .row{
    width:100%;
  }

  /* ---------- Forms ---------- */
  input,
  textarea,
  select{
    box-sizing:border-box;
    max-width:100%;
    font-size:16px !important;
  }

  .composer input,
  .composer textarea,
  .composer select,
  .settings input,
  .settings textarea,
  .settings select{
    min-height:44px;
    padding:11px 12px;
    border-radius:11px;
  }

  textarea{
    resize:vertical;
  }

  input[type="file"]{
    max-width:100%;
    font-size:14px !important;
  }

  /* ---------- Grids ---------- */
  .grid2,
  .grid3{
    grid-template-columns:1fr;
    width:100%;
  }

  /* ---------- Feed / items ---------- */
  .item{
    padding:13px;
    border-radius:13px;
    overflow-wrap:anywhere;
  }

  .item img,
  .item video,
  .item iframe{
    max-width:100%;
    height:auto;
  }

  /* ---------- Interview ---------- */
  .legacy-interview-hero{
    padding:19px 15px;
  }

  .legacy-interview-hero h1{
    font-size:27px;
    line-height:1.15;
  }

  .legacy-interview-hero .lead{
    font-size:15px;
    line-height:1.55;
  }

  .legacy-interview-hero .row{
    align-items:stretch;
  }

  .legacy-interview-hero .row .btn,
  .legacy-interview-hero .row label.btn{
    flex:1 1 100%;
    width:100%;
    min-height:46px;
    display:flex;
    align-items:center;
    justify-content:center;
    text-align:center;
    box-sizing:border-box;
  }

  .interview-progress{
    height:9px;
    border-radius:999px;
    overflow:hidden;
    margin:12px 0 16px;
  }

  .interview-question{
    padding:2px 0;
  }

  .interview-question h2{
    font-size:22px;
    line-height:1.3;
  }

  .interview-actions{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:8px;
  }

  .interview-actions .btn{
    width:100%;
    min-height:46px;
  }

  /* ---------- Profile picture ---------- */
  .profile-picture-editor{
    width:100%;
    box-sizing:border-box;
    padding:14px;
    gap:14px;
  }

  .profile-picture-preview{
    width:88px;
    height:88px;
  }

  /* ---------- Tables / wide content ---------- */
  table{
    display:block;
    width:100%;
    max-width:100%;
    overflow-x:auto;
    -webkit-overflow-scrolling:touch;
  }

  pre,
  code{
    max-width:100%;
    overflow-x:auto;
    white-space:pre-wrap;
    overflow-wrap:anywhere;
  }

  /* ---------- Tree / visual areas ---------- */
  .treecanvas{
    height:390px;
    width:100%;
  }

  /* ---------- Timeline ---------- */
  .timeline{
    padding-left:22px;
    margin-left:3px;
  }

  /* ---------- Toasts ---------- */
  .toast{
    left:12px;
    right:12px;
    bottom:calc(14px + env(safe-area-inset-bottom));
    text-align:center;
    max-width:none;
    box-sizing:border-box;
  }

  /* ---------- Public / authentication pages ---------- */
  .public-shell{
    width:100%;
    max-width:100%;
    padding:0 10px calc(20px + env(safe-area-inset-bottom));
    box-sizing:border-box;
  }

  .public-shell .public-app{
    width:100%;
    max-width:100%;
    padding:18px 6px;
    box-sizing:border-box;
  }

  .auth-card{
    width:100%;
    max-width:620px;
    margin:14px auto;
    box-sizing:border-box;
  }

  .auth-card .btn{
    min-height:46px;
  }

  /* ---------- Messaging ---------- */
  .message-start{
    padding:14px;
  }

  .message-start input{
    width:100%;
    min-height:44px;
    flex:1 1 100%;
  }

  .message-start .btn{
    width:100%;
  }

  /* ---------- Welcome area ---------- */
  .welcome-hero{
    padding:19px 15px;
  }

  .welcome-inspiration{
    font-size:16px;
    line-height:1.55;
  }

  /* ---------- Accessibility ---------- */
  :focus-visible{
    outline-width:3px;
    outline-offset:3px;
  }

  /* Avoid accidental text selection during rapid button tapping. */
  button,
  .btn,
  .nav{
    -webkit-tap-highlight-color:transparent;
  }
}

/* ---------- Small phones ---------- */
@media (max-width:390px){

  .shell{
    padding-left:8px;
    padding-right:8px;
  }

  .card{
    padding:13px;
    border-radius:14px;
  }

  .hero{
    padding:17px 13px;
  }

  .hero h1,
  .welcome-hero h1,
  .legacy-interview-hero h1{
    font-size:25px;
  }

  .nav{
    padding-left:11px;
    padding-right:11px;
    font-size:13px;
  }

  .btn{
    font-size:14px;
  }

  .treecanvas{
    height:340px;
  }
}

/* ---------- Landscape phones ---------- */
@media (max-width:850px) and (orientation:landscape){

  .sidebar{
    position:sticky;
    top:0;
  }

  .card{
    margin-bottom:10px;
  }

  .treecanvas{
    height:300px;
  }
}

/* ---------- iPhone safe-area support ---------- */
@supports (padding:max(0px)){

  @media (max-width:720px){

    .shell{
      padding-left:max(10px, env(safe-area-inset-left));
      padding-right:max(10px, env(safe-area-inset-right));
    }

    .toast{
      left:max(12px, env(safe-area-inset-left));
      right:max(12px, env(safe-area-inset-right));
    }
  }
}

/* =========================================================
   MOBILE NAVIGATION — VISIBLE SCROLL / MORE-TABS CUE
   Existing navigation and functions are unchanged.
   ========================================================= */

@media (max-width:720px){

  /* Make the existing navigation look intentionally scrollable */
  #nav{
    position:sticky;
    top:64px;
    z-index:25;

    display:flex;
    flex-wrap:nowrap;

    width:100%;
    box-sizing:border-box;

    padding:6px 28px 13px 6px;
    margin:0 0 13px;

    gap:7px;

    overflow-x:auto;
    overflow-y:hidden;

    -webkit-overflow-scrolling:touch;
    overscroll-behavior-x:contain;

    scrollbar-width:thin;
    scrollbar-color:var(--accent) #eef0f5;

    border:1px solid var(--line);
    border-radius:15px;

    background:rgba(255,255,255,.97);

    box-shadow:0 4px 14px rgba(16,24,40,.06);
  }

  /* Chrome / Samsung / Android visible scrollbar */
  #nav::-webkit-scrollbar{
    height:6px;
  }

  #nav::-webkit-scrollbar-track{
    background:#eef0f5;
    border-radius:999px;
    margin:0 8px;
  }

  #nav::-webkit-scrollbar-thumb{
    background:var(--accent);
    border-radius:999px;
    min-width:55px;
  }

  /* Every existing navigation button remains available */
  #nav .nav{
    flex:0 0 auto;
    width:auto;
    min-width:max-content;
    min-height:44px;

    padding:10px 13px;

    border-radius:11px;
    white-space:nowrap;

    font-size:14px;
    font-weight:600;

    touch-action:pan-x manipulation;
  }

  #nav .nav.active{
    box-shadow:inset 0 -3px 0 var(--accent);
  }

  /*
     Visual right-side cue.
     It does not cover the buttons; it simply tells users
     that more navigation exists beyond the visible area.
  */
  #nav::after{
    content:"›";
    position:absolute;
    right:5px;
    top:5px;

    width:28px;
    height:43px;

    display:flex;
    align-items:center;
    justify-content:center;

    border-radius:10px;

    background:linear-gradient(
      90deg,
      rgba(255,255,255,.25),
      rgba(255,255,255,.98)
    );

    color:var(--accent);
    font-size:25px;
    font-weight:800;

    pointer-events:none;
  }

  /* Add a subtle instruction below the navigation */
  #nav::before{
    content:"Swipe → for more";
    position:absolute;
    right:9px;
    bottom:1px;

    font-size:9px;
    line-height:10px;
    font-weight:600;

    color:var(--muted);

    background:rgba(255,255,255,.92);
    padding:0 3px;

    pointer-events:none;
  }

  /*
     Make sure the pseudo-elements don't interfere with
     the horizontal scrolling area.
  */
  #nav{
    isolation:isolate;
  }

  #nav::before,
  #nav::after{
    z-index:3;
  }

  @media (max-width:390px){

    #nav{
      padding-left:5px;
      padding-right:27px;
      gap:5px;
    }

    #nav .nav{
      min-height:43px;
      padding:9px 11px;
      font-size:13px;
    }

    #nav::before{
      font-size:8px;
    }
  }
}