/* ============================================================================
   ddt.css  ·  Digital Double Technologies Inc  ·  shared design system
   Institutional-infrastructure register: spacious, deliberate, trustworthy.
   Additive layer. Link this BEFORE a page's own <style> block so page-specific
   rules still win where they must.

   ---------------------------------------------------------------------------
   CANONICAL NAV (static pages)
   ---------------------------------------------------------------------------
   <nav class="ddt-nav">
     <a href="index.html" class="ddt-nav-logo">Digital Double <span>Technologies</span></a>
     <div class="ddt-nav-links">
       <a href="index.html">Home</a>
       <a href="about.html">About</a>
       <a href="about.html#contact">Contact</a>
       <button class="tbtn ddt-theme-btn" onclick="ddtTheme()" aria-label="Toggle dark mode"></button>
     </div>
   </nav>

   ---------------------------------------------------------------------------
   CANONICAL FOOTER (static pages)
   ---------------------------------------------------------------------------
   <footer class="ddt-footer">
     <div class="ddt-footer-logo">Digital Double Technologies Inc</div>
     <div class="ddt-footer-links">
       <a href="index.html">Home</a>
       <a href="about.html">About</a>
       <a href="about.html#contact">Contact</a>
       <a href="/privacy">Privacy</a>
       <a href="/terms">Terms</a>
       <a href="/security.html">Security</a>
     </div>
     <p class="ddt-footer-status">Digital Double Technologies Inc · All rights reserved.<br>
        System live in production · Active performer pilot running · ddt-pro.com</p>
   </footer>

   ---------------------------------------------------------------------------
   CANONICAL DARK-MODE TOGGLE (inline this four-line function on every page;
   no shared JS file, to avoid load-order coupling). Every toggle button calls
   onclick="ddtTheme()". The button carries no text: its label is rendered by
   CSS ::after below so it live-updates with the theme.
   ---------------------------------------------------------------------------
   <script>
   function ddtTheme(){var r=document.documentElement,n=r.getAttribute('data-theme')==='dark'?'light':'dark';r.setAttribute('data-theme',n);localStorage.setItem('ddt-theme',n);}
   if(localStorage.getItem('ddt-theme')==='dark')document.documentElement.setAttribute('data-theme','dark');
   </script>
   ============================================================================ */

/* ---------------------------------------------------------------------------
   COLOR SYSTEM
   --------------------------------------------------------------------------- */
:root{
  --cream:#FAF8F4;
  --warm:#F5F2EC;
  --parchment:#F7F3EA;
  --ink:#1A1915;
  --ink-soft:#3D3B35;
  --ink-muted:#7A7870;
  --sage:#7B9E87;
  --sage-light:#B8D4C0;
  --sage-pale:#E8F2EB;
  --gold:#C9A96E;
  --gold-deep:#A8843A;
  --gold-pale:#F5EDD8;
  --border:rgba(26,25,21,0.1);
  --ok:#4A9B6F;
  --bad:#C0392B;
  --amber:#E67E22;
}
[data-theme=dark]{
  --cream:#141412;
  --warm:#1C1B18;
  --parchment:#201D16;
  --ink:#F0EDE6;
  --ink-soft:#C8C4BB;
  --ink-muted:#6A6860;
  --sage-pale:#1E2E22;
  --gold-pale:#2A2218;
  --border:rgba(240,237,230,0.1);
}

/* ---------------------------------------------------------------------------
   SPACING TOKENS
   --------------------------------------------------------------------------- */
:root{
  --space-xs:8px;
  --space-sm:16px;
  --space-md:24px;
  --space-lg:40px;
  --space-xl:64px;
  --space-2xl:96px;
  --space-3xl:140px;
}

/* ---------------------------------------------------------------------------
   TYPOGRAPHY
   --------------------------------------------------------------------------- */
.t-display{font-family:'Cormorant Garamond',serif;font-size:clamp(36px,5vw,64px);font-weight:300;line-height:1.08;color:var(--ink)}
.t-heading{font-family:'Cormorant Garamond',serif;font-size:clamp(24px,3.5vw,40px);font-weight:300;line-height:1.15;color:var(--ink)}
.t-subheading{font-family:'Cormorant Garamond',serif;font-size:clamp(18px,2.2vw,26px);font-weight:300;line-height:1.3;color:var(--ink)}
.t-body{font-family:'DM Sans',sans-serif;font-size:clamp(15px,1.4vw,16px);font-weight:300;line-height:1.85;color:var(--ink-soft)}
.t-small{font-family:'DM Sans',sans-serif;font-size:13px;font-weight:300;line-height:1.7;color:var(--ink-muted)}
.t-mono{font-family:'DM Mono',monospace;font-size:clamp(11px,1vw,12px);font-weight:400}
.t-eyebrow{font-family:'DM Sans',sans-serif;font-size:10px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-muted)}
.t-label{font-family:'DM Sans',sans-serif;font-size:10px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-muted)}

/* ---------------------------------------------------------------------------
   NAV
   --------------------------------------------------------------------------- */
.ddt-nav{position:fixed;top:0;left:0;right:0;z-index:100;min-height:54px;padding:0 var(--space-lg);display:flex;align-items:center;justify-content:space-between;background:rgba(250,248,244,.93);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border);transition:background .4s}
[data-theme=dark] .ddt-nav{background:rgba(20,20,18,.93)}
.ddt-nav-logo{font-family:'Cormorant Garamond',serif;font-size:17px;font-weight:500;letter-spacing:.03em;color:var(--ink);text-decoration:none}
.ddt-nav-logo span{color:var(--sage)}
.ddt-nav-links{display:flex;align-items:center;gap:var(--space-md)}
.ddt-nav-links a{font-family:'DM Sans',sans-serif;font-size:13px;font-weight:300;color:var(--ink-muted);text-decoration:none;transition:color .2s}
.ddt-nav-links a:hover{color:var(--sage)}
.tbtn{background:none;border:1px solid var(--border);border-radius:100px;padding:5px 14px;font-size:12px;font-family:'DM Sans',sans-serif;color:var(--ink-muted);cursor:pointer;transition:all .2s}
.tbtn:hover{border-color:var(--sage);color:var(--sage)}
/* Toggle label rendered via ::after so it live-updates with the theme;
   the four-line ddtTheme() only flips data-theme and persists it. */
.ddt-theme-btn{min-width:92px;text-align:center}
.ddt-theme-btn::after{content:"Dark mode"}
[data-theme=dark] .ddt-theme-btn::after{content:"Light mode"}

/* ---------------------------------------------------------------------------
   FOOTER
   --------------------------------------------------------------------------- */
.ddt-footer{background:var(--ink);color:#FAF8F4;border-top:1px solid var(--border);padding:var(--space-xl) var(--space-lg) var(--space-lg);display:flex;flex-direction:column;align-items:center;gap:var(--space-md);text-align:center}
.ddt-footer-logo{font-family:'Cormorant Garamond',serif;font-size:18px;font-weight:400;color:#FAF8F4;letter-spacing:.02em}
.ddt-footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--space-md)}
.ddt-footer-links a{font-family:'DM Sans',sans-serif;font-size:12px;font-weight:300;color:rgba(250,248,244,.6);text-decoration:none;transition:color .2s}
.ddt-footer-links a:hover{color:var(--sage-light)}
.ddt-footer-status{font-family:'DM Sans',sans-serif;font-size:11px;font-weight:300;line-height:1.7;color:rgba(250,248,244,.45)}

/* ---------------------------------------------------------------------------
   BUTTONS
   --------------------------------------------------------------------------- */
.ddt-btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--gold);color:#1A1915;border:1px solid var(--gold);border-radius:100px;padding:12px 26px;font-family:'DM Sans',sans-serif;font-size:14px;font-weight:600;text-decoration:none;cursor:pointer;transition:background .2s,border-color .2s,transform .2s}
.ddt-btn-primary:hover{background:var(--gold-deep);border-color:var(--gold-deep);transform:translateY(-1px)}
.ddt-btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:transparent;color:var(--sage);border:1px solid var(--sage);border-radius:100px;padding:12px 26px;font-family:'DM Sans',sans-serif;font-size:14px;font-weight:600;text-decoration:none;cursor:pointer;transition:background .2s,color .2s,transform .2s}
.ddt-btn-secondary:hover{background:var(--sage);color:var(--cream);transform:translateY(-1px)}
.ddt-btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:transparent;color:var(--ink-muted);border:1px solid transparent;border-radius:100px;padding:12px 22px;font-family:'DM Sans',sans-serif;font-size:14px;font-weight:500;text-decoration:none;cursor:pointer;transition:color .2s,border-color .2s}
.ddt-btn-ghost:hover{color:var(--sage);border-color:var(--border)}

/* ---------------------------------------------------------------------------
   PILLS
   --------------------------------------------------------------------------- */
.ddt-pill{display:inline-flex;align-items:center;gap:8px;border-radius:100px;padding:5px 14px;font-family:'DM Sans',sans-serif;font-size:12px;font-weight:500;letter-spacing:.02em;border:1px solid var(--border)}
.ddt-pill::before{content:'';width:7px;height:7px;border-radius:50%;background:currentColor;flex-shrink:0}
.ddt-pill.pill-ok{color:var(--ok);background:rgba(74,155,111,.08);border-color:rgba(74,155,111,.3)}
.ddt-pill.pill-bad{color:var(--bad);background:rgba(192,57,43,.08);border-color:rgba(192,57,43,.3)}
.ddt-pill.pill-warn{color:var(--amber);background:rgba(230,126,34,.08);border-color:rgba(230,126,34,.3)}
.ddt-pill.pill-muted{color:var(--ink-muted);background:var(--warm);border-color:var(--border)}

/* ---------------------------------------------------------------------------
   CARD
   --------------------------------------------------------------------------- */
.ddt-card{background:var(--warm);border:1px solid var(--border);border-radius:16px;padding:var(--space-lg)}

/* ---------------------------------------------------------------------------
   SECTION + HERO
   --------------------------------------------------------------------------- */
.ddt-section{max-width:960px;margin-left:auto;margin-right:auto;padding-top:var(--space-2xl);padding-bottom:var(--space-2xl);padding-left:var(--space-lg);padding-right:var(--space-lg)}
.ddt-hero{min-height:80vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:var(--space-3xl) var(--space-lg) var(--space-xl)}

/* ---------------------------------------------------------------------------
   CREDIBILITY STRIP (modeled on the live index.html strip, shared here)
   --------------------------------------------------------------------------- */
.ddt-credibility-strip{display:flex;align-items:center;justify-content:center;gap:22px;flex-wrap:wrap;padding:22px 24px;border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--warm)}
.ddt-credibility-strip .cred-item{display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:500;letter-spacing:.14em;text-transform:uppercase}
.ddt-credibility-strip .cred-item.cred-sage{color:var(--sage)}
.ddt-credibility-strip .cred-item.cred-gold{color:var(--gold)}
.ddt-credibility-strip .cred-item::before{content:'';width:7px;height:7px;border-radius:50%;background:currentColor;box-shadow:0 0 0 3px color-mix(in srgb, currentColor 20%, transparent);flex-shrink:0}
.ddt-credibility-strip .cred-sep{width:1px;height:14px;background:var(--border)}

/* ---------------------------------------------------------------------------
   ICON SPRITE HELPER
   --------------------------------------------------------------------------- */
.ddt-icon{width:1em;height:1em;display:inline-block;vertical-align:-0.125em;stroke:currentColor;fill:none;flex-shrink:0}

/* ---------------------------------------------------------------------------
   SIGNUP FLOAT  (single source of truth; was duplicated with drift across
   index.html, investor.html, performer.html)
   --------------------------------------------------------------------------- */
#ddt-signup-float{
  position:fixed;bottom:80px;right:28px;z-index:400;
  background:rgba(123,158,135,.55);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border:1px solid rgba(123,158,135,.6);border-radius:16px;
  padding:22px 24px;width:310px;
  box-shadow:0 16px 48px rgba(0,0,0,.25);
  font-family:"DM Sans",sans-serif;
  transition:transform .4s cubic-bezier(.4,0,.2,1),opacity .4s;
}
#ddt-signup-float.hidden{transform:translateY(130%);opacity:0;pointer-events:none}
.sf-dismiss{position:absolute;top:12px;right:14px;background:none;border:none;color:rgba(26,25,21,.35);cursor:pointer;font-size:15px;padding:2px 6px;transition:color .2s}
.sf-dismiss:hover{color:#1A1915}
.sf-eyebrow{font-size:9px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:#3D3B35;margin-bottom:6px}
.sf-title{font-family:"Cormorant Garamond",serif;font-size:19px;font-weight:300;color:#1A1915;line-height:1.25;margin-bottom:14px}
.sf-title em{font-style:italic;color:#A8843A}
.sf-roles{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-bottom:14px}
.sf-role{background:rgba(255,255,255,.2);border:1px solid rgba(26,25,21,.15);border-radius:8px;padding:9px 10px;font-size:12px;font-weight:500;color:#3D3B35;cursor:pointer;text-align:center;transition:all .2s;font-family:"DM Sans",sans-serif}
.sf-role:hover{border-color:rgba(201,169,110,.4);color:rgba(201,169,110,.8)}
.sf-role.active-creator{border-color:#7B9E87;color:#7B9E87;background:rgba(123,158,135,.1)}
.sf-role.active-vendor{border-color:#C9A96E;color:#C9A96E;background:rgba(201,169,110,.08)}
.sf-pitch{font-size:12px;font-weight:300;color:#3D3B35;line-height:1.7;margin-bottom:12px;display:none}
.sf-pitch.show{display:block}
.sf-mandate-link{display:inline-flex;align-items:center;gap:6px;font-size:11px;color:#C9A96E;text-decoration:none;border:1px solid rgba(201,169,110,.25);border-radius:100px;padding:5px 12px;margin-top:8px;transition:all .2s;cursor:pointer;font-family:"DM Mono",monospace}
.sf-mandate-link:hover{background:rgba(201,169,110,.08);border-color:rgba(201,169,110,.5)}
.sf-fields{display:none}
.sf-fields.show{display:block}
.sf-input{width:100%;padding:10px 12px;border:1px solid rgba(26,25,21,.2);border-radius:8px;font-size:13px;font-family:"DM Sans",sans-serif;color:#1A1915;background:rgba(255,255,255,.5);box-sizing:border-box;outline:none;transition:border-color .2s;margin-bottom:8px}
.sf-input::placeholder{color:#7A7870}
.sf-input:focus{border-color:#7B9E87}
.sf-btn{width:100%;padding:11px;background:#C9A96E;color:#1A1915;border:none;border-radius:100px;font-size:13px;font-weight:600;font-family:"DM Sans",sans-serif;cursor:pointer;transition:all .2s;margin-top:2px}
.sf-btn:hover{background:#A8843A}
.sf-btn:disabled{background:rgba(201,169,110,.3);cursor:default}
.sf-err{font-size:11px;color:#C0392B;margin-top:4px;min-height:14px}
.sf-success{display:none;font-size:13px;color:#7B9E87;line-height:1.7;text-align:center;padding:6px 0}
.sf-success.show{display:block}
.sf-tab{position:fixed;bottom:80px;right:28px;z-index:400;background:rgba(26,25,21,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(201,169,110,.3);border-radius:100px;padding:10px 20px;font-size:12px;font-weight:500;font-family:"DM Sans",sans-serif;color:#C9A96E;cursor:pointer;box-shadow:0 8px 24px rgba(0,0,0,.3);display:none;transition:all .2s;letter-spacing:.02em}
.sf-tab:hover{background:rgba(201,169,110,.1)}

/* ---------------------------------------------------------------------------
   MOTION
   --------------------------------------------------------------------------- */
/* Observer-compatible reveal: pages add .visible via IntersectionObserver.
   Matches the existing about.html / investor.html pattern so linking ddt.css
   does not force page fade-ins to run on load instead of on scroll. */
.fade-in{opacity:0;transform:translateY(20px);transition:opacity .7s,transform .7s}
.fade-in.visible{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .fade-in{opacity:1;transform:none;transition:none}
}

/* ---------------------------------------------------------------------------
   ACCESSIBILITY
   --------------------------------------------------------------------------- */
a:focus-visible,button:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-radius:4px}

@media(max-width:600px){
  .ddt-nav{padding:0 var(--space-md)}
  .ddt-nav-links{gap:var(--space-sm)}
  .ddt-section{padding-left:var(--space-md);padding-right:var(--space-md)}
}