/* iVi brand tokens (same as the other intelligentvisibility.com demos):
   iVi Blue 00558B, body 434343, light blue CFE2F3, row tint F6F8F9, muted 666666 */
:root {
  --ivi-blue: #00558B; --ivi-blue-dark: #003F68;
  --bg: #F6F8F9; --surface: #FFFFFF; --text: #434343; --heading: #00558B; --muted: #666666;
  --line: #DCE5EC; --accent: #00558B; --accent-soft: #CFE2F3; --link: #1155CC;
  --bubble-in: #EEF2F5; --bubble-out: #00558B; --bubble-out-text: #FFFFFF;
  --alert: #B42318; --alert-soft: #FDECEA; --ok: #1A7F4B; --ok-soft: #E6F4EC;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0E1620; --surface: #15212D; --text: #D9E2EA; --heading: #8CC4EA; --muted: #9AABBA;
    --line: #26384A; --accent: #8CC4EA; --accent-soft: #1A3550; --link: #8CC4EA;
    --bubble-in: #1D2C3B; --bubble-out: #1F6FA8; --alert: #F59E93; --alert-soft: #3A1C1A; --ok: #7FD1A4; --ok-soft: #173326;
  }
}
:root[data-theme="dark"] {
  --bg: #0E1620; --surface: #15212D; --text: #D9E2EA; --heading: #8CC4EA; --muted: #9AABBA;
  --line: #26384A; --accent: #8CC4EA; --accent-soft: #1A3550; --link: #8CC4EA;
  --bubble-in: #1D2C3B; --bubble-out: #1F6FA8; --alert: #F59E93; --alert-soft: #3A1C1A; --ok: #7FD1A4; --ok-soft: #173326;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
       font: 16px/1.6 "Pontano Sans", "Helvetica Neue", Arial, sans-serif; }
a { color: var(--link); }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }

/* Top bar: always white so the blue logo reads in both themes */
.topbar { background: #FFFFFF; border-bottom: 1px solid #DCE5EC; }
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.topbar img { height: 40px; width: auto; display: block; }
.badge { font-size: 13px; color: #00558B; background: #CFE2F3; border-radius: 999px; padding: 4px 12px; white-space: nowrap; }

/* Hero */
.hero { color: #FFFFFF; background: linear-gradient(100deg, #003F68 0%, #00558B 55%, #2B7DB3 100%); }
.hero .wrap { padding-top: 56px; padding-bottom: 64px; }
.eyebrow { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; opacity: .85; margin: 0; }
.hero h1 { font-size: 40px; line-height: 1.15; font-weight: 500; margin: 10px 0 14px; max-width: 680px; }
.hero p.lead { font-size: 19px; max-width: 640px; margin: 0 0 28px; opacity: .95; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.btn { display: inline-flex; align-items: center; gap: 8px; border-radius: 8px; padding: 12px 20px;
       font: inherit; font-weight: 700; text-decoration: none; }
.btn-primary { background: #FFFFFF; color: #00558B; }
.btn-ghost { color: #FFFFFF; border: 1px solid rgba(255,255,255,.7); }
.btn svg { width: 18px; height: 18px; }

main.wrap { padding-top: 40px; padding-bottom: 64px; }
main section { margin-bottom: 48px; scroll-margin-top: 16px; }
h2 { color: var(--heading); font-weight: 500; font-size: 24px; margin: 0 0 14px; }
h3 { color: var(--heading); font-size: 17px; margin: 0 0 10px; }
.intro { font-size: 18px; max-width: 820px; }
.muted, .hint { color: var(--muted); font-size: 14px; }
.kicker { font-size: 12px; color: var(--heading); font-weight: 700; text-transform: uppercase; letter-spacing: .05em; margin: 0 0 8px; }
.sources { color: var(--muted); font-size: 13px; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
.card p { margin: 0; }
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.step-num { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%;
            background: var(--accent-soft); color: var(--heading); font-weight: 700; font-size: 14px; margin-bottom: 8px; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin: 18px 0; }
.stat .num { display: block; font-size: 34px; color: var(--heading); font-weight: 500; line-height: 1.1; margin-bottom: 6px; }
.stat p { font-size: 15px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin: 0 0 14px; }
.section-head h2 { margin: 0; }
.linkbtn { background: none; border: 0; color: var(--link); font: inherit; font-size: 15px; cursor: pointer; padding: 4px 0; text-align: left; }

/* Simulator */
.sim { display: grid; grid-template-columns: 260px minmax(300px, 380px) 1fr; gap: 20px; align-items: start; }
.sim-controls { display: flex; flex-direction: column; gap: 12px; }
.sim-controls label { font-weight: 700; color: var(--heading); font-size: 14px; }
select { font: inherit; font-size: 15px; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); color: var(--text); }
.seg { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg button { font: inherit; font-size: 14px; padding: 8px 6px; border: 0; background: var(--surface); color: var(--text); cursor: pointer; }
.seg button[aria-checked="true"] { background: var(--ivi-blue); color: #FFFFFF; font-weight: 700; }
.openers { display: flex; flex-direction: column; gap: 6px; }
.opener { font: inherit; font-size: 14px; text-align: left; background: var(--accent-soft); color: var(--text); border: 0;
          border-radius: 8px; padding: 8px 10px; cursor: pointer; }
.opener:hover { outline: 1px solid var(--accent); }
.persona-note { color: var(--muted); font-size: 13px; }

.phone { background: var(--surface); border: 1px solid var(--line); border-radius: 28px; padding: 10px; display: flex; flex-direction: column;
         height: 620px; box-shadow: 0 12px 30px rgba(0,40,70,.12); }
.phone-head { display: flex; align-items: center; gap: 10px; padding: 8px 10px 12px; border-bottom: 1px solid var(--line); }
.avatar { width: 38px; height: 38px; border-radius: 50%; background: var(--accent-soft); color: var(--heading); display: grid; place-items: center; font-weight: 700; }
.phone-head .who { font-weight: 700; color: var(--text); line-height: 1.2; }
.phone-head .sub { font-size: 12px; color: var(--muted); }
.phone[data-channel="rcs"] .phone-head { background: var(--ivi-blue); color: #FFFFFF; border-radius: 18px 18px 0 0; margin: -10px -10px 0; padding: 14px 16px; border: 0; }
.phone[data-channel="rcs"] .phone-head .who, .phone[data-channel="rcs"] .phone-head .sub { color: #FFFFFF; }
.phone[data-channel="rcs"] .avatar { background: #FFFFFF; color: var(--ivi-blue); }
.thread { flex: 1; overflow-y: auto; padding: 12px 6px; display: flex; flex-direction: column; gap: 6px; }
.msg { max-width: 82%; padding: 8px 12px; border-radius: 18px; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 15px; line-height: 1.45; }
.msg.in { background: var(--bubble-in); align-self: flex-start; border-bottom-left-radius: 6px; }
.msg.out { background: var(--bubble-out); color: var(--bubble-out-text); align-self: flex-end; border-bottom-right-radius: 6px; }
.msg.note { align-self: center; background: none; color: var(--muted); font-size: 12px; text-align: center; padding: 2px 8px; }
.msg.error { align-self: center; background: var(--alert-soft); color: var(--alert); font-size: 13px; border-radius: 10px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; align-self: flex-start; margin: 2px 0 6px; }
.chip { font: inherit; font-size: 14px; background: var(--surface); color: var(--heading); border: 1px solid var(--accent); border-radius: 999px; padding: 5px 12px; cursor: pointer; }
.typing { align-self: flex-start; background: var(--bubble-in); border-radius: 18px; padding: 10px 14px; display: inline-flex; gap: 4px; }
.typing span { width: 7px; height: 7px; border-radius: 50%; background: var(--muted); animation: blink 1.2s infinite ease-in-out; }
.typing span:nth-child(2) { animation-delay: .2s; } .typing span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 80%, 100% { opacity: .25; } 40% { opacity: 1; } }
.composer { display: flex; gap: 8px; padding: 10px 4px 2px; border-top: 1px solid var(--line); }
.composer input { flex: 1; font: inherit; font-size: 15px; padding: 10px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--bg); color: var(--text); min-width: 0; }
.composer button { width: 42px; height: 42px; border-radius: 50%; border: 0; background: var(--ivi-blue); color: #FFFFFF; cursor: pointer; display: grid; place-items: center; }
.composer button:disabled { opacity: .5; cursor: default; }
.composer svg { width: 18px; height: 18px; }

.sim-side { display: flex; flex-direction: column; gap: 16px; }
.progress { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.progress li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--muted); }
.progress li::before { content: ""; width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--line); flex: none; }
.progress li.done { color: var(--text); }
.progress li.done::before { background: var(--ivi-blue); border-color: var(--ivi-blue); }
.progress li.now { color: var(--heading); font-weight: 700; }
.progress li.now::before { border-color: var(--ivi-blue); }
.progress li.skip { text-decoration: line-through; opacity: .6; }

.handoff { border-left: 4px solid var(--ivi-blue); }
.handoff.alert { border-left-color: var(--alert); }
.hv-title { font-size: 18px; color: var(--heading); margin: 0 0 2px; }
.hv-sub { color: var(--muted); font-size: 13px; margin: 0 0 12px; }
.hv-bar { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 8px; margin-bottom: 12px; }
.hv-bar div { background: var(--bg); border-radius: 8px; padding: 6px 10px; }
.hv-bar dt { font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.hv-bar dd { margin: 0; font-weight: 700; color: var(--text); }
.hv-flag { border-radius: 8px; padding: 8px 12px; margin-bottom: 12px; font-size: 14px; }
.hv-flag.urgent { background: var(--alert-soft); color: var(--alert); }
.hv-flag.calm { background: var(--ok-soft); color: var(--ok); }
.hv dl { display: grid; grid-template-columns: 140px 1fr; gap: 6px 12px; margin: 0; font-size: 14px; }
.hv dl dt { color: var(--heading); font-weight: 700; }
.hv dl dd { margin: 0; }
.hv .front { margin-top: 12px; background: var(--accent-soft); border-radius: 8px; padding: 10px 12px; font-size: 14px; }
.hv .foot { margin-top: 10px; color: var(--muted); font-size: 12px; }

/* Flow */
.diagram { overflow-x: auto; margin: 16px 0; }
.diagram pre.mermaid { margin: 0; background: none; font-family: inherit; text-align: center; }
.diagram svg { display: block; margin: 0 auto; }
.qtable { padding: 0; overflow-x: auto; }
.qtable table { width: 100%; border-collapse: collapse; font-size: 14px; }
.qtable th, .qtable td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.qtable th { color: var(--heading); font-size: 13px; text-transform: uppercase; letter-spacing: .04em; background: var(--bg); }
.qtable td:first-child { white-space: nowrap; font-weight: 700; color: var(--heading); }
.qtable tr:last-child td { border-bottom: 0; }

/* Examples */
.tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.tab { font: inherit; font-size: 14px; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--text); cursor: pointer; }
.tab[aria-selected="true"] { background: var(--ivi-blue); border-color: var(--ivi-blue); color: #FFFFFF; font-weight: 700; }
.examples { display: grid; grid-template-columns: minmax(280px, 520px) 1fr; gap: 20px; align-items: start; }
.ex-thread { display: flex; flex-direction: column; gap: 6px; }
.ex-caption { color: var(--muted); font-size: 14px; margin: 0 0 10px; }

/* Footer */
.site-footer { background: #FFFFFF; border-top: 4px solid #00558B; color: #434343; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: center; justify-content: space-between; padding-top: 24px; padding-bottom: 28px; }
.site-footer img { height: 34px; width: auto; display: block; }
.site-footer p { margin: 0; font-size: 14px; }
.site-footer .fine { color: #666666; font-size: 13px; flex-basis: 100%; }
.site-footer a { color: #00558B; }

@media (max-width: 1000px) {
  .sim { grid-template-columns: 1fr; }
  .phone { height: 560px; }
  .examples { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .hero h1 { font-size: 30px; }
  .hero p.lead { font-size: 17px; }
  .topbar img { height: 32px; }
  .hv dl { grid-template-columns: 1fr; gap: 2px; }
  .hv dl dd { margin-bottom: 6px; }
}