/* =========================================================
   Encore Digital — theme switch + dark mode
   Loaded last (after overrides.css). Light mode is untouched:
   everything below the toggle block only applies when
   <html data-theme="dark"> is set (see the inline script in
   <head> and the "Theme toggle" block at the end of script.js).
   ========================================================= */

/* ---------- Header actions group (toggle + CTA) ---------- */
.header-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }

/* ---------- Theme toggle (sun / moon pill) ---------- */
.theme-toggle {
  --h: 32px;
  --w: 62px;
  --pad: 3px;
  position: relative;
  display: block;
  flex: none;
  width: var(--w);
  height: var(--h);
  padding: 0;
  border: 1px solid rgba(255, 255, 255, .24);
  border-radius: 999px;
  background: rgba(2, 36, 84, .55);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background .35s ease, border-color .35s ease, box-shadow .35s ease;
}
.theme-toggle:hover { border-color: rgba(255, 255, 255, .45); }
.theme-toggle:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.theme-toggle__slot {
  position: absolute;
  top: 0;
  bottom: 0;
  width: calc(var(--h) - 2px);
  display: grid;
  place-items: center;
  color: #8fb4f0;
  pointer-events: none;
}
.theme-toggle__slot--sun { left: 0; }
.theme-toggle__slot--moon { right: 0; }
.theme-toggle__slot svg { width: 15px; height: 15px; display: block; }
.theme-toggle__knob {
  position: absolute;
  top: var(--pad);
  left: var(--pad);
  width: calc(var(--h) - 2px - var(--pad) * 2);
  height: calc(var(--h) - 2px - var(--pad) * 2);
  border-radius: 50%;
  background: #fff;
  color: #0873cf;
  display: grid;
  place-items: center;
  box-shadow: 0 2px 8px rgba(0, 20, 60, .35);
  transition: transform .38s cubic-bezier(.34, 1.35, .64, 1), color .3s ease;
  pointer-events: none;
}
.theme-toggle__knob svg {
  grid-area: 1 / 1;
  width: 14px;
  height: 14px;
  display: block;
  transition: opacity .25s ease, transform .45s cubic-bezier(.34, 1.35, .64, 1);
}
/* light state: sun in the knob, moon tucked away */
.theme-toggle__knob .k-moon { opacity: 0; transform: rotate(-50deg) scale(.5); }
/* dark state: knob slides right and shows the moon */
[data-theme="dark"] .theme-toggle {
  background: #0c2a63;
  border-color: rgba(120, 165, 240, .4);
  box-shadow: 0 0 0 3px rgba(8, 115, 207, .12);
}
[data-theme="dark"] .theme-toggle:hover { border-color: rgba(150, 190, 255, .65); }
[data-theme="dark"] .theme-toggle__knob {
  transform: translateX(calc(var(--w) - var(--h)));
  color: #0c2a63;
}
[data-theme="dark"] .theme-toggle__knob .k-sun { opacity: 0; transform: rotate(50deg) scale(.5); }
[data-theme="dark"] .theme-toggle__knob .k-moon { opacity: 1; transform: none; }

@media (max-width: 1180px) {
  .header-actions { gap: 10px; }
  .theme-toggle { --h: 28px; --w: 54px; --pad: 3px; }
  .theme-toggle__slot svg { width: 13px; height: 13px; }
  .theme-toggle__knob svg { width: 12px; height: 12px; }
}
@media (max-width: 800px) {
  .header-actions { margin-left: auto; margin-right: 8px; }
}

/* ---------- Circular reveal when the theme changes (View Transitions) ---------- */
::view-transition-old(root),
::view-transition-new(root) { animation: none; mix-blend-mode: normal; }
::view-transition-old(root) { z-index: 1; }
::view-transition-new(root) { z-index: 2; }

/* =========================================================
   DARK THEME
   ========================================================= */
:root[data-theme="dark"] {
  color-scheme: dark;
  background: #07101f;

  /* palette */
  --dk-bg: #07101f;        /* page base */
  --dk-bg-2: #08142a;      /* alternate base */
  --dk-bg-3: #0a1730;      /* tinted sections */
  --dk-band: #0a1f42;      /* the blue "feature bands" (expertise, partnership) */
  --dk-surface: #0f2243;   /* cards, panels */
  --dk-surface-2: #14305c; /* raised / hover */
  --dk-line: rgba(130, 170, 240, .18);
  --dk-line-2: rgba(130, 170, 240, .32);
  --dk-text: #e9f0fc;
  --dk-text-2: #a9bad6;
  --dk-text-3: #8196b8;
  --dk-accent: #63b3ff;    /* links, kickers, small headings */
  --dk-accent-2: #8cc8ff;

  /* re-point the site's own tokens so un-overridden rules follow along.
     --encore-blue / --blue stay the brand blue (used for button fills). */
  --navy: #0c1b36;
  --navy2: #0f2243;
  --cream: var(--dk-bg-2);
  --paper: var(--dk-bg);
  --ink: var(--dk-text);
  --muted: var(--dk-text-3);
  --line: rgba(130, 170, 240, .22);
  --darkline: var(--dk-line);
  --encore-pale: var(--dk-bg-3);
}

[data-theme="dark"] body { background: var(--dk-bg); color: var(--dk-text); }
[data-theme="dark"] ::selection { background: rgba(99, 179, 255, .35); color: #fff; }

/* ---------- Loader ---------- */
[data-theme="dark"] #ed-loader { background: radial-gradient(circle at 50% 40%, #10294f 0%, #06101f 62%); }

/* ---------- Header + mobile nav ---------- */
[data-theme="dark"] .header { background: rgba(7, 16, 31, .72); border-bottom-color: var(--dk-line); }
[data-theme="dark"] .header.stuck { background: rgba(7, 16, 31, .9); box-shadow: 0 8px 28px rgba(0, 0, 0, .45); }
[data-theme="dark"] .header-talk { background: var(--encore-blue); color: #fff; }
[data-theme="dark"] .header-talk:hover { background: #0a86ea; color: #fff; box-shadow: 0 10px 20px rgba(8, 115, 207, .35); }
[data-theme="dark"] .mobile-nav { background: var(--dk-bg-3); border-bottom-color: var(--dk-line); }

/* ---------- Hero ---------- */
[data-theme="dark"] .hero {
  background-color: #06101f;
  background-image:
    radial-gradient(ellipse 55% 85% at 84% 46%, rgba(8, 115, 207, .32), transparent 70%),
    repeating-radial-gradient(ellipse at 87% 48%, transparent 0 22px, rgba(120, 170, 255, .10) 23px 24px),
    linear-gradient(130deg, transparent 60%, rgba(8, 115, 207, .12));
}
[data-theme="dark"] .hero:after { border-color: rgba(120, 170, 255, .16); }
[data-theme="dark"] .grid-sphere {
  background:
    repeating-radial-gradient(ellipse at 45% 45%, transparent 0 28px, rgba(140, 190, 255, .22) 29px 30px),
    repeating-linear-gradient(15deg, transparent 0 22px, rgba(140, 190, 255, .11) 23px 24px);
}
[data-theme="dark"] .hero-art:before,
[data-theme="dark"] .hero-art:after { border-color: rgba(140, 190, 255, .2); }
[data-theme="dark"] .hero-tags span { border-color: rgba(140, 190, 255, .35); }

/* ---------- Marquee ---------- */
[data-theme="dark"] .marquee { background: var(--dk-bg-3); color: var(--dk-accent-2); border-color: var(--dk-line); }
[data-theme="dark"] .marquee b { color: var(--dk-accent); }

/* ---------- Shared section furniture ---------- */
[data-theme="dark"] .section-top .kicker,
[data-theme="dark"] .number,
[data-theme="dark"] .expertise .section-top .kicker,
[data-theme="dark"] .partnership-side .number,
[data-theme="dark"] .partnership-side .kicker { color: var(--dk-accent); }
[data-theme="dark"] .expertise .number { color: var(--dk-accent) !important; } /* beats the inline style="color:white" */
[data-theme="dark"] .section h2 { color: var(--dk-text); }
[data-theme="dark"] .section h2 em { color: var(--dk-accent); }
[data-theme="dark"] .expertise h2 em,
[data-theme="dark"] .partnership-copy h2 em { color: var(--dk-text); } /* matches light mode: no accent inside the blue bands */
[data-theme="dark"] .industry-intro p,
[data-theme="dark"] .cert-head p,
[data-theme="dark"] .team-head p,
[data-theme="dark"] .gallery-head p,
[data-theme="dark"] .offices-head p { color: var(--dk-text-2); }

/* ---------- About ---------- */
[data-theme="dark"] .about {
  background-color: var(--dk-bg-2);
  background-image:
    repeating-radial-gradient(ellipse at -8% 55%, transparent 0 22px, rgba(99, 179, 255, .05) 23px 24px),
    repeating-radial-gradient(ellipse at 107% 18%, transparent 0 22px, rgba(99, 179, 255, .05) 23px 24px);
}
[data-theme="dark"] .about-copy p { color: var(--dk-text-2); }
[data-theme="dark"] .about-copy .lead { color: var(--dk-text); }
[data-theme="dark"] .service-card { background: var(--dk-surface); border-color: var(--dk-line); box-shadow: 0 8px 24px rgba(0, 0, 0, .28); }
[data-theme="dark"] .service-card:hover { border-color: var(--dk-accent); box-shadow: 0 20px 40px rgba(0, 0, 0, .45); }
[data-theme="dark"] .service-card::before,
[data-theme="dark"] .cert-badge-card::before { background: linear-gradient(120deg, transparent 30%, rgba(140, 190, 255, .10) 48%, transparent 62%); }
[data-theme="dark"] .card-index { color: var(--dk-accent); }
[data-theme="dark"] .service-icon { border-color: var(--dk-line-2); color: var(--dk-accent); }
[data-theme="dark"] .service-card h3 { color: var(--dk-text); }
[data-theme="dark"] .service-card p { color: var(--dk-text-2); }
[data-theme="dark"] .service-card a { color: var(--dk-accent); }
[data-theme="dark"] .service-card a span { color: var(--dk-accent-2); }
[data-theme="dark"] .about-statement { border-color: var(--dk-line); color: var(--dk-text-2); }
[data-theme="dark"] .about-statement b { color: var(--dk-text); }

/* ---------- Expertise (blue band) ---------- */
[data-theme="dark"] .expertise {
  background-color: var(--dk-band);
  background-image:
    repeating-radial-gradient(ellipse at 110% 100%, transparent 0 24px, rgba(120, 170, 255, .08) 25px 26px),
    linear-gradient(120deg, rgba(8, 115, 207, .16), transparent 55%);
}
[data-theme="dark"] .expertise-item:hover,
[data-theme="dark"] .expertise-item.active { background: rgba(99, 179, 255, .08); }
[data-theme="dark"] .expertise-content { background: rgba(99, 179, 255, .07); }
[data-theme="dark"] .expertise-item.active ~ .expertise-content { border-color: var(--dk-line-2); }

/* ---------- Industries ---------- */
[data-theme="dark"] .industries {
  background-color: var(--dk-bg);
  background-image: repeating-radial-gradient(ellipse at 103% 2%, transparent 0 22px, rgba(99, 179, 255, .05) 23px 24px);
}
[data-theme="dark"] .industry-card {
  background-color: var(--dk-surface);
  background-image:
    radial-gradient(circle at 100% 100%, rgba(120, 170, 255, .14) 0 1px, transparent 2px),
    repeating-radial-gradient(ellipse at 100% 100%, transparent 0 23px, rgba(120, 170, 255, .10) 24px 25px);
  border: 1px solid var(--dk-line);
}
[data-theme="dark"] .industry-card:hover { box-shadow: 0 20px 42px rgba(0, 0, 0, .5); }
[data-theme="dark"] .slide-count { color: var(--dk-text-3); }
[data-theme="dark"] .slide-count b { color: var(--dk-accent); }
[data-theme="dark"] .slider-line { background: var(--dk-line-2); }
[data-theme="dark"] .slider-line i { background: var(--dk-accent); }
[data-theme="dark"] .slider-button { border-color: var(--dk-line-2); color: var(--dk-accent); }
[data-theme="dark"] .slider-button:hover { background: var(--encore-blue); border-color: var(--encore-blue); color: #fff; }

/* ---------- Certifications ---------- */
[data-theme="dark"] .certifications {
  background-color: var(--dk-bg-3);
  background-image: repeating-radial-gradient(ellipse at -6% 8%, transparent 0 22px, rgba(99, 179, 255, .05) 23px 24px);
}
[data-theme="dark"] .cert-badge-card { background: var(--dk-surface); border-color: var(--dk-line); box-shadow: 0 6px 18px rgba(0, 0, 0, .28); }
[data-theme="dark"] .cert-badge-card:hover { border-color: var(--dk-accent); box-shadow: 0 18px 34px rgba(0, 0, 0, .5); }
[data-theme="dark"] .cert-badge-card:hover .cert-media { box-shadow: 0 0 0 6px rgba(99, 179, 255, .14); }
[data-theme="dark"] .cert-badge-card h3 { color: var(--dk-text); }
[data-theme="dark"] .cert-other-row { background: var(--dk-surface); border-color: var(--dk-line); }
[data-theme="dark"] .cert-other-text { color: var(--dk-text-2); }
[data-theme="dark"] .cert-other-text strong { color: var(--dk-accent); }
[data-theme="dark"] .cert-footer strong,
[data-theme="dark"] .cert-footer strong span { color: var(--dk-accent); }
[data-theme="dark"] .cert-footer p { color: var(--dk-text-2); }

/* ---------- Team ---------- */
[data-theme="dark"] .team-card { background: var(--dk-surface); border-color: var(--dk-line); }
[data-theme="dark"] .team-card:hover { border-color: var(--dk-accent); box-shadow: 0 18px 34px rgba(0, 0, 0, .45); }
[data-theme="dark"] .team-role { color: var(--dk-text-3); }
[data-theme="dark"] .team-links a { border-color: var(--dk-line-2); color: var(--dk-accent); }
[data-theme="dark"] .team-links a:hover { background: var(--encore-blue); border-color: var(--encore-blue); color: #fff; }

/* ---------- Gallery ---------- */
[data-theme="dark"] .deck-stage .gallery-item { background: #14284a; border-color: var(--dk-line); box-shadow: 0 16px 34px rgba(0, 0, 0, .5); }
[data-theme="dark"] .deck-stage .gallery-item.is-top { box-shadow: 0 26px 54px rgba(0, 0, 0, .6); }
[data-theme="dark"] .deck-btn { color: var(--dk-text); border-color: var(--dk-line-2); }
[data-theme="dark"] .deck-btn:hover,
[data-theme="dark"] .deck-btn--solid { background: var(--encore-blue); border-color: var(--encore-blue); color: #fff; }
[data-theme="dark"] .deck-btn--solid:hover { background: #0a86ea; border-color: #0a86ea; }
[data-theme="dark"] .deck-hint { color: var(--dk-text-3); }

/* ---------- Academia collaboration ---------- */
[data-theme="dark"] .collab { background: var(--dk-bg-2); }
[data-theme="dark"] .collab-copy p,
[data-theme="dark"] .collab-signers li,
[data-theme="dark"] .collab-note { color: var(--dk-text-2); }
[data-theme="dark"] .collab-signers li b { color: var(--dk-text); }
[data-theme="dark"] .collab-label { color: var(--dk-accent); }
[data-theme="dark"] .collab-carousel { box-shadow: 0 24px 50px rgba(0, 0, 0, .5), 0 0 0 1px var(--dk-line); }

/* ---------- Partnership (blue band) ---------- */
[data-theme="dark"] .partnership {
  background-color: var(--dk-band);
  background-image:
    repeating-radial-gradient(ellipse at 0% 100%, transparent 0 25px, rgba(120, 170, 255, .08) 26px 27px),
    linear-gradient(240deg, rgba(8, 115, 207, .14), transparent 55%);
}
[data-theme="dark"] .partnership-side { border-color: var(--dk-line-2); }

/* ---------- Offices ---------- */
[data-theme="dark"] .office-card { background: var(--dk-surface); border-color: var(--dk-line); }
[data-theme="dark"] .office-card:after { background: rgba(99, 179, 255, .07); }
[data-theme="dark"] .office-card:hover { border-color: var(--dk-accent); box-shadow: 0 22px 42px rgba(0, 0, 0, .5); }
[data-theme="dark"] .office-card h3 { color: var(--dk-text); }
[data-theme="dark"] .office-company { background: rgba(99, 179, 255, .12); color: var(--dk-accent-2); }
[data-theme="dark"] .office-address { color: var(--dk-text-2); }
[data-theme="dark"] .office-phone,
[data-theme="dark"] .office-link { color: var(--dk-accent); }

/* ---------- Contact ---------- */
[data-theme="dark"] .contact {
  background-color: var(--dk-bg);
  background-image: repeating-radial-gradient(ellipse at 105% 70%, transparent 0 22px, rgba(99, 179, 255, .05) 23px 24px);
  color: var(--dk-text);
}
[data-theme="dark"] .contact-title h2 { color: var(--dk-text); }
[data-theme="dark"] .contact-title h2 em { color: var(--dk-accent); }
[data-theme="dark"] .contact-title > p { color: var(--dk-text-2); }
[data-theme="dark"] .contact-chip {
  background: var(--dk-surface);
  border-color: var(--dk-line);
  color: var(--dk-text);
  box-shadow: 0 8px 22px rgba(0, 0, 0, .3);
}
[data-theme="dark"] .contact-chip .chip-icon { background: rgba(99, 179, 255, .12); color: var(--dk-accent); }
[data-theme="dark"] .contact-chip .chip-label { color: var(--dk-text-3); }
[data-theme="dark"] .contact-chip:hover {
  background: var(--encore-blue);
  border-color: var(--encore-blue);
  color: #fff;
  box-shadow: 0 16px 30px rgba(8, 115, 207, .4);
}
[data-theme="dark"] .contact-chip:hover .chip-icon { background: rgba(255, 255, 255, .2); color: #fff; }
[data-theme="dark"] .contact-chip:hover .chip-label { color: #dcf0ff; }

/* ---------- Footer ---------- */
[data-theme="dark"] footer {
  background-color: #050c18;
  background-image: repeating-radial-gradient(ellipse at 105% 120%, transparent 0 22px, rgba(120, 170, 255, .07) 23px 24px);
}

/* ---------- Conversation modal + form ---------- */
[data-theme="dark"] .modal-overlay { background: rgba(2, 8, 18, .72); }
[data-theme="dark"] .modal-panel { background: var(--dk-surface); box-shadow: 0 30px 70px rgba(0, 0, 0, .6), 0 0 0 1px var(--dk-line); }
[data-theme="dark"] .modal-close { background: rgba(99, 179, 255, .12); color: var(--dk-accent); }
[data-theme="dark"] .modal-close:hover { background: var(--encore-blue); color: #fff; }
[data-theme="dark"] .modal-kicker { color: var(--dk-accent) !important; }
[data-theme="dark"] .modal-head h3 { color: var(--dk-text); }
[data-theme="dark"] .modal-sub { color: var(--dk-text-2); }
[data-theme="dark"] .contact-form label { color: var(--dk-accent-2); }
[data-theme="dark"] .contact-form input,
[data-theme="dark"] .contact-form textarea { border-color: var(--dk-line-2); color: var(--dk-text); }
[data-theme="dark"] .contact-form input:focus,
[data-theme="dark"] .contact-form textarea:focus { border-color: var(--dk-accent); }
[data-theme="dark"] .contact-form input::placeholder,
[data-theme="dark"] .contact-form textarea::placeholder { color: var(--dk-text-3); }
[data-theme="dark"] .contact-form input:-webkit-autofill {
  -webkit-text-fill-color: var(--dk-text);
  caret-color: var(--dk-text);
  box-shadow: 0 0 0 100px var(--dk-surface) inset;
  transition: background-color 9999s ease-out;
}
[data-theme="dark"] .form-response { color: var(--dk-text-2); }

/* ---------- Toasts ---------- */
[data-theme="dark"] .toast { border-color: var(--dk-line-2); box-shadow: 0 18px 40px rgba(0, 0, 0, .55); }

/* ---------- Collaborations page ---------- */
[data-theme="dark"] .collab-alt { background: var(--dk-bg-3); }
[data-theme="dark"] .collab-photo { box-shadow: 0 24px 50px rgba(0, 0, 0, .5), 0 0 0 1px var(--dk-line); }
[data-theme="dark"] .collab-people { border-top-color: var(--dk-line); }
[data-theme="dark"] .collab-people li { color: var(--dk-text-2); }
[data-theme="dark"] .collab-people li a,
[data-theme="dark"] .collab-link { color: var(--dk-text); }
[data-theme="dark"] .collab-people li a:hover,
[data-theme="dark"] .collab-link:hover { color: var(--dk-accent); }
[data-theme="dark"] .collab-people li span { color: var(--dk-text-3); }