/* =====================================================================
   Atrustos | Platform page
   Seven modules, each with a live mini-UI; the four-pillar layer stack.
   ===================================================================== */

/* ---------- sticky module bar ---------- */
.modbar { position: sticky; top: 86px; z-index: 50; display: flex; justify-content: center; padding: 18px var(--gutter) 0; scroll-margin-top: 90px; }
.modbar__inner { display: flex; gap: 4px; padding: 6px; border-radius: 100px; max-width: 100%; overflow-x: auto; scrollbar-width: none;
  background: linear-gradient(180deg, rgba(20,24,44,.72), rgba(10,12,26,.66)); }
.modbar__inner::-webkit-scrollbar { display: none; }
.modbar a { display: inline-flex; align-items: center; gap: 7px; padding: 9px 15px; border-radius: 100px; font-size: 14px; font-weight: 500; color: var(--text-2); white-space: nowrap;
  transition: color .2s var(--ease), background .2s var(--ease); }
.modbar a svg { width: 15px; height: 15px; }
.modbar a:hover { color: #fff; background: rgba(255,255,255,.06); }
.modbar a.on, .modbar a.on:hover { color: #05060d; background: linear-gradient(180deg, #fff, #dfe4ff); }

/* ---------- module rows ---------- */
.mods .container { display: grid; gap: clamp(96px, 12vw, 160px); }
.mod { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(36px, 6vw, 88px); align-items: center; scroll-margin-top: 170px; }
.mod--rev .mod__viz { order: -1; }
.mod__k { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--accent-2); }
.mod h2 { font-size: clamp(32px, 3.8vw, 54px); letter-spacing: -.045em; margin: 18px 0 16px; }
.mod__text > p { color: var(--text-2); font-size: 17px; margin-bottom: 22px; }
.mod__who { display: inline-flex; align-items: center; gap: 10px; font-size: 13.5px; color: var(--text-2); padding: 6px 14px 6px 6px; border-radius: 100px;
  background: rgba(255,255,255,.04); border: 1px solid var(--line); }
.mod__av { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font-size: 12px; font-weight: 700; color: #fff;
  background: linear-gradient(180deg, #b8adff, #6a58ff); }
.mod__viz { position: relative; }

/* ---------- shared mini-UI ---------- */
.ui { padding: 22px; border-radius: var(--r-xl);
  background: radial-gradient(80% 60% at 50% 0%, rgba(141,125,255,.14), transparent 70%), linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.015)); }
.ui__bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 16px; margin-bottom: 14px; border-bottom: 1px solid var(--line); }
.ui__app { display: inline-flex; align-items: center; gap: 10px; font-size: 15px; font-weight: 600; }
.ui__app svg { width: 18px; height: 18px; color: var(--accent-2); }
.ui__face { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font-size: 13px; font-weight: 700; background: linear-gradient(180deg, #b8adff, #6a58ff); }
.ui__muted { font-size: 11.5px; color: var(--text-3); }
.ui__ok { display: inline-flex; align-items: center; gap: 5px; font-size: 11px; color: var(--mint); }
.ui__ok svg { width: 14px; height: 14px; }
.ui__chip { font-size: 11px; padding: 4px 9px; border-radius: 7px; background: rgba(255,255,255,.06); border: 1px solid var(--line); color: var(--text-2); }
.ui__label { font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--text-3); margin: 6px 0 10px; }
.ui__note { font-size: 11.5px; color: var(--text-3); margin: 14px 0 16px; }
.ui__foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 11.5px; color: var(--text-2); }
.ui__btn { font-size: 12.5px; font-weight: 600; padding: 7px 13px; border-radius: 100px; color: #ff9ab4; border: 1px solid rgba(255,92,134,.4); }

.ui-rows { display: grid; gap: 6px; }
.ui-rows li { display: grid; grid-template-columns: 1fr auto auto; gap: 12px; align-items: center; padding: 11px 12px; border-radius: 12px; background: rgba(255,255,255,.035); font-size: 14px; }
.ui-rows span { color: var(--text-3); }
.ui-rows b { font-weight: 550; text-align: right; }
.ui-rows em, .ui-mail em { font-style: normal; font-family: var(--mono); font-size: 10.5px; padding: 3px 8px; border-radius: 6px; background: rgba(255,255,255,.07); color: var(--text-2); }
em.ok { background: rgba(79,240,180,.12); color: var(--mint); }
em.o { background: rgba(255,106,43,.14); color: var(--accent-2); }
em.dim { color: var(--text-3); }
.ui-live { transition: background .4s var(--ease), box-shadow .4s var(--ease); }
.ui-live.flash { background: rgba(255,106,43,.1); box-shadow: inset 0 0 0 1px rgba(255,154,107,.4); }
.ui-live b { transition: opacity .25s var(--ease); }
.ui-dots { display: inline-flex; }
.ui-dots i { width: 20px; height: 20px; border-radius: 50%; border: 2px solid #0b0d1a; margin-left: -6px; background: linear-gradient(180deg, #5ee4ff, #2a8fd6); }
.ui-dots i:first-child { margin-left: 0; background: linear-gradient(180deg, #4ff0b4, #1fb57f); }
.ui-dots i:last-child { background: linear-gradient(180deg, #ff9a6b, #ff5a1f); }

/* login */
.ui-finger { display: flex; align-items: center; justify-content: center; gap: 12px; padding: 14px; border-radius: 16px; background: linear-gradient(180deg, #fff, #dfe4ff); color: #05060d; font-size: 15px; }
.ui-finger__ico { position: relative; display: grid; place-items: center; width: 30px; height: 30px; }
.ui-finger__ico svg { width: 24px; height: 24px; color: var(--accent); }
.ui-finger__ring { position: absolute; inset: -4px; border-radius: 50%; border: 2px solid var(--accent); animation: ring-out 1.8s var(--ease) infinite; }
@keyframes ring-out { from { transform: scale(.7); opacity: 1; } to { transform: scale(1.5); opacity: 0; } }
.ui-float { position: absolute; left: -26px; bottom: -26px; display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: 16px; font-size: 13.5px; font-weight: 550;
  background: rgba(12,14,28,.82); }
.ui-float svg { width: 26px; height: 26px; color: #fff; }
.ui-float small { display: block; font-size: 10.5px; font-weight: 400; color: var(--mint); }

/* documents */
.ui-doc__file { display: flex; align-items: center; gap: 12px; padding: 14px; border-radius: 14px; background: rgba(255,255,255,.04); margin-bottom: 18px; }
.ui-doc__ico { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: rgba(141,125,255,.18); color: #cfc8ff; }
.ui-doc__ico svg { width: 21px; height: 21px; }
.ui-doc__file b { display: block; font-size: 15px; }
.ui-doc__file small { font-size: 11px; color: var(--text-3); }
.ui-doc__stamp { margin-left: auto; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--mint); padding: 6px 10px; border: 1.5px solid currentColor; border-radius: 8px; transform: rotate(-5deg) scale(1.6); opacity: 0;
  transition: transform .4s var(--ease-spring), opacity .3s; }
.ui-doc[data-step="3"] .ui-doc__stamp, .ui-doc[data-step="4"] .ui-doc__stamp { opacity: 1; transform: rotate(-5deg) scale(1); }
.ui-steps { position: relative; display: grid; gap: 4px; padding-left: 4px; }
.ui-steps li { position: relative; display: grid; grid-template-columns: 22px 1fr; column-gap: 12px; padding: 9px 0; color: var(--text-3); transition: color .3s var(--ease); }
.ui-steps li::before { content: ""; position: absolute; left: 10px; top: 30px; bottom: -10px; width: 2px; background: var(--line); }
.ui-steps li:last-child::before { display: none; }
.ui-steps__dot { grid-row: span 2; width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--line-2); background: var(--bg); transition: all .3s var(--ease); }
.ui-steps b { font-size: 14px; font-weight: 550; }
.ui-steps small { font-size: 11px; }
.ui-steps li.on { color: var(--text); }
.ui-steps li.on .ui-steps__dot { border-color: var(--mint); background: var(--mint); box-shadow: 0 0 14px rgba(79,240,180,.6); }
.ui-steps li.on small { color: var(--text-2); }

/* agreements */
.ui-signers { display: grid; gap: 8px; }
.ui-signers li { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; padding: 12px; border-radius: 14px; background: rgba(255,255,255,.035); }
.ui-signers__n { width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-family: var(--mono); font-size: 12px; color: var(--text-3); border: 1px solid var(--line-2); }
.ui-signers b { display: block; font-size: 14px; }
.ui-signers small { font-size: 11px; color: var(--text-3); }
.ui-signers li > svg { width: 18px; height: 18px; color: var(--mint); }
.ui-signers li.done .ui-signers__n { background: rgba(79,240,180,.14); border-color: rgba(79,240,180,.4); color: var(--mint); }
.ui-signers li.done small { color: var(--mint); }
.ui-signers li.now { background: rgba(255,106,43,.08); box-shadow: inset 0 0 0 1px rgba(255,154,107,.35); }
.ui-signers li.now .ui-signers__n { background: var(--accent); border-color: var(--accent); color: #fff; }
.ui-sig { width: 120px; height: 36px; }
.ui-sig path { fill: none; stroke: #fff; stroke-width: 2.4; stroke-linecap: round; stroke-dasharray: 360; stroke-dashoffset: 360; animation: sign 3.2s var(--ease) infinite; }
@keyframes sign { 0% { stroke-dashoffset: 360; } 55%, 85% { stroke-dashoffset: 0; } 100% { stroke-dashoffset: 0; opacity: 0; } }

/* postbox */
.ui-tabs { display: flex; gap: 6px; margin-bottom: 14px; font-size: 11.5px; }
.ui-tabs span { padding: 6px 12px; border-radius: 100px; color: var(--text-3); border: 1px solid var(--line); }
.ui-tabs span.on { color: #05060d; background: #fff; border-color: #fff; }
.ui-mail { display: grid; gap: 6px; }
.ui-mail li { display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; padding: 12px; border-radius: 14px; background: rgba(255,255,255,.035); }
.ui-mail li.new { background: rgba(255,106,43,.07); }
.ui-mail__ico { width: 36px; height: 36px; border-radius: 11px; display: grid; place-items: center; background: rgba(255,255,255,.07); }
.ui-mail__ico svg { width: 17px; height: 17px; }
.ui-mail b { display: flex; align-items: center; gap: 5px; font-size: 14px; }
.ui-mail b svg { width: 14px; height: 14px; color: var(--mint); }
.ui-mail small { font-size: 12.5px; color: var(--text-3); }

/* access */
.ui-conn { display: grid; gap: 6px; margin-bottom: 18px; }
.ui-conn li { display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; padding: 11px 12px; border-radius: 14px; background: rgba(255,255,255,.035); }
.ui-conn li > svg { width: 18px; height: 18px; color: var(--text-2); }
.ui-conn b { display: block; font-size: 14px; }
.ui-conn small { font-size: 11px; color: var(--mint); }
.ui-conn li.off { opacity: .75; }
.ui-conn li.off small { color: var(--rose); }
.pf-switch { position: relative; width: 38px; height: 22px; border-radius: 100px; background: linear-gradient(180deg, #4ff0b4, #22c48a); box-shadow: 0 0 14px -4px rgba(79,240,180,.7); }
.pf-switch::after { content: ""; position: absolute; top: 3px; left: 19px; width: 16px; height: 16px; border-radius: 50%; background: #fff; box-shadow: 0 1px 4px rgba(0,0,0,.35); }
.pf-switch.is-off { background: rgba(255,255,255,.14); box-shadow: none; }
.pf-switch.is-off::after { left: 3px; }
.ui-log { display: grid; gap: 4px; font-size: 11.5px; }
.ui-log li { display: grid; grid-template-columns: 40px auto 1fr; gap: 10px; align-items: center; padding: 8px 10px; border-radius: 10px; background: rgba(255,255,255,.025); color: var(--text-2); }
.ui-log span { color: var(--text-3); }
.ui-log em { font-style: normal; font-size: 10px; letter-spacing: .08em; padding: 2px 7px; border-radius: 5px; }
.ui-log em.peek { color: var(--cyan); background: rgba(94,228,255,.1); }
.ui-log em.touch { color: var(--accent-2); background: rgba(255,106,43,.12); }
.ui-log em.deny { color: var(--rose); background: rgba(255,92,134,.12); }
.ui-log em.sign { color: var(--mint); background: rgba(79,240,180,.1); }

/* sharing */
.ui-claims { display: grid; gap: 6px; margin-bottom: 14px; }
.ui-claims li { display: grid; grid-template-columns: auto 1fr; column-gap: 12px; align-items: center; padding: 12px; border-radius: 14px; background: rgba(255,255,255,.035); }
.ui-claims svg { grid-row: span 2; width: 18px; height: 18px; }
.ui-claims li.yes svg { color: var(--mint); }
.ui-claims li.no { opacity: .6; }
.ui-claims li.no svg { color: var(--text-3); }
.ui-claims b { font-size: 14px; }
.ui-claims small { font-size: 11px; color: var(--text-3); }
.ui-link { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 12px 14px; border-radius: 14px; background: rgba(94,228,255,.06); border: 1px solid rgba(94,228,255,.25); font-size: 12.5px; }
.ui-link svg { width: 16px; height: 16px; color: var(--cyan); }
.ui-link__exp { margin-left: auto; color: var(--text-3); font-size: 11px; }
.ui-link__exp b { color: #fff; font-weight: 500; }

/* surfaces list on the photo */
.surf { display: grid; gap: 14px; }
.surf li { display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: start; }
.surf li > span { width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center; background: rgba(255,255,255,.08); }
.surf li > span svg { width: 18px; height: 18px; }
.surf b { display: block; font-size: 15px; }
.surf small { font-size: 13.5px; color: var(--text-2); }

/* ---------- four pillars: layer stack ---------- */
.stack { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 88px); align-items: center; }
.stack__viz { position: relative; height: 540px; perspective: 1600px; }
.layer { position: absolute; left: 50%; top: calc(40px + var(--i) * 92px); width: 280px; height: 280px; margin-left: -140px; z-index: calc(10 - var(--i));
  transition: transform .5s var(--ease); }
.slab { width: 100%; height: 100%; border-radius: 40px; display: grid; place-items: center;
  transform: rotateX(60deg) rotateZ(-45deg); transform-style: preserve-3d;
  background: linear-gradient(135deg, rgba(255,255,255,.12), rgba(255,255,255,.03));
  border: 1px solid rgba(255,255,255,.16);
  box-shadow: 0 30px 60px -20px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.2);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  transition: background .5s var(--ease), border-color .5s var(--ease), box-shadow .5s var(--ease); }
.slab svg { width: 56px; height: 56px; color: var(--text-3); transform: rotateZ(45deg); transition: color .4s var(--ease); }
.layer.on { transform: translateY(-18px); }
.layer.on .slab { background: linear-gradient(135deg, rgba(255,138,82,.55), rgba(255,90,31,.18)); border-color: rgba(255,154,107,.7);
  box-shadow: 0 40px 80px -20px rgba(255,90,31,.55), inset 0 1px 0 rgba(255,255,255,.35); }
.layer.on .slab svg { color: #fff; }
.stack__list { display: grid; gap: 10px; }
.stack__list li { display: grid; grid-template-columns: auto 1fr; gap: 16px; padding: 18px 20px; border-radius: var(--r-lg); cursor: pointer;
  border: 1px solid transparent; transition: background .3s var(--ease), border-color .3s var(--ease); }
.stack__list li > span { font-size: 12px; color: var(--text-3); padding-top: 4px; }
.stack__list b { display: block; font-size: 19px; font-weight: 600; letter-spacing: -.02em; margin-bottom: 4px; color: var(--text-2); transition: color .3s; }
.stack__list p { font-size: 15px; color: var(--text-3); transition: color .3s; }
.stack__list li.on { background: rgba(255,255,255,.04); border-color: var(--line); }
.stack__list li.on > span { color: var(--accent-2); }
.stack__list li.on b { color: #fff; }
.stack__list li.on p { color: var(--text-2); }

/* ---------- responsive ---------- */
@media (max-width: 1020px) {
  .mod, .stack { grid-template-columns: minmax(0, 1fr); }
  .mod--rev .mod__viz { order: 0; }
  .ui-float { left: 12px; bottom: -22px; }
  .stack__viz { height: 570px; }
}
@media (max-width: 600px) {
  .modbar { top: 80px; padding-top: 12px; }
  .modbar a { padding: 8px 12px; font-size: 13px; }
  .ui { padding: 16px; }
  .ui-rows li { grid-template-columns: 1fr auto; }
  .ui-rows li em { display: none; }
  .ui-sig { width: 80px; }
  .layer { width: 210px; height: 210px; margin-left: -105px; top: calc(20px + var(--i) * 74px); }
  .slab { border-radius: 30px; }
  .slab svg { width: 40px; height: 40px; }
  .stack__viz { height: 450px; }
}