/* ── Design tokens (redeclared — this repo has no shared stylesheet) ── */
:root {
  --dv-navy:        #1a2b6d;
  --dv-navy-dark:   #14226b;
  --dv-accent:      #1a4fd6;
  --dv-bg-soft:     #f8f9ff;
  --dv-bg-cta:      #eef2ff;
  --dv-border:      #c8d2ea;
  --dv-border-card: #d4dcf0;
  --dv-text-muted:  #6878a8;
  --dv-text-mid:    #3d4e87;
  --dv-divider:     #e8ecf4;
  --dv-subtle:      #8896c4;
  --dv-footer-rule: #e0e7f2;
  --dv-error:       #c0392b;
}

/* ── Reset / Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Source Sans Pro', Arial, sans-serif;
  color: var(--dv-navy);
  background: #fff;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }

h1, h2 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--dv-navy);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 36px;
}

section { padding: 56px 0; }

/* ── Buttons ── */
.btn {
  display: inline-block;
  background: var(--dv-navy);
  color: #fff;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  padding: 14px 28px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  transition: background 0.2s;
}
.btn:hover, .btn:focus-visible { background: var(--dv-navy-dark); outline: none; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: none;
  color: var(--dv-navy);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 12px 22px;
  border: 1.5px solid var(--dv-navy);
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
}
.btn-outline:hover, .btn-outline:focus-visible {
  background: var(--dv-bg-soft);
  outline: none;
}

/* ══════════════════════════════════════════ */
/* HEADER                                    */
/* ══════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: #fff;
  border-bottom: 1px solid var(--dv-divider);
  padding: 14px 0;
}
.site-header .container { display: flex; align-items: center; }
.site-logo img { height: 50px; width: auto; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: auto;
}
.site-nav a {
  color: var(--dv-navy);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
}
.site-nav a:hover,
.site-nav a:focus-visible { text-decoration: underline; }
.nav-join-waitlist-mobile { display: none; }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  margin-left: auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
}
.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dv-navy);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}
.nav-toggle-bar { position: relative; }
.nav-toggle-bar::before,
.nav-toggle-bar::after { content: ""; position: absolute; left: 0; }
.nav-toggle-bar::before { top: -7px; }
.nav-toggle-bar::after { top: 7px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after { transform: translateY(-7px) rotate(-45deg); }

/* ══════════════════════════════════════════ */
/* DEMO INTRO + RESET                        */
/* ══════════════════════════════════════════ */
.demo-hero { padding-bottom: 32px; }
.demo-hero-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
}
.demo-hero-copy h1 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  margin-bottom: 12px;
}
.demo-hero-copy p { color: var(--dv-text-mid); max-width: 520px; }
.reassurance {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  font-size: 0.9rem;
  color: var(--dv-text-muted);
}
.reassurance svg { flex-shrink: 0; }
.btn-reset { flex-shrink: 0; }

/* ══════════════════════════════════════════ */
/* CONTROLS                                  */
/* ══════════════════════════════════════════ */
.demo-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  margin-bottom: 12px;
}
.control-group p {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--dv-text-muted);
  margin-bottom: 10px;
}

.scenario-group { display: flex; flex-wrap: wrap; gap: 14px; }
.scenario-card {
  display: flex;
  align-items: center;
  gap: 12px;
  text-align: left;
  min-height: 44px;
  padding: 12px 18px;
  background: #fff;
  border: 1.5px solid var(--dv-border-card);
  border-radius: 14px;
  font-family: inherit;
  cursor: pointer;
}
.scenario-card[aria-pressed="true"] {
  border-color: var(--dv-navy);
  background: var(--dv-bg-soft);
  box-shadow: 0 0 0 1px var(--dv-navy) inset;
}
.scenario-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--dv-bg-cta);
  color: var(--dv-navy);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.scenario-text { display: flex; flex-direction: column; }
.scenario-label {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--dv-navy);
}
.scenario-card[aria-pressed="true"] .scenario-label { font-weight: 700; }
.scenario-sub { font-size: 0.78rem; color: var(--dv-text-muted); }

.period-group { display: flex; flex-wrap: wrap; gap: 8px; }
.period-btn {
  min-height: 44px;
  padding: 10px 20px;
  background: #fff;
  border: 1.5px solid var(--dv-border);
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--dv-navy);
  cursor: pointer;
}
.period-btn[aria-pressed="true"] {
  background: var(--dv-navy);
  border-color: var(--dv-navy);
  color: #fff;
}

.scenario-context {
  font-size: 0.9rem;
  color: var(--dv-text-muted);
  margin-bottom: 24px;
}

/* ══════════════════════════════════════════ */
/* PANELS LAYOUT                             */
/* ══════════════════════════════════════════ */
.demo-panels {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 32px;
  align-items: start;
}

.panel-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.panel-icon { color: var(--dv-accent); flex-shrink: 0; }
.panel-subheading {
  font-size: 0.92rem;
  color: var(--dv-text-muted);
  margin-bottom: 18px;
}

/* ── Viewer panel ── */
.viewer-panel {
  background: var(--dv-bg-soft);
  border-radius: 20px;
  padding: 28px;
}
.viewer-caption {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 0.82rem;
  color: var(--dv-text-muted);
}

/* ── Device frame + mockup component (ported from index.html) ── */
.dv-device-frame {
  background: #1d2545;
  border-radius: 22px;
  padding: 10px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.dv-device-frame .dv-mockup {
  border-radius: 13px;
  box-shadow: none;
}

.dv-mockup {
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 8px 40px rgba(26, 43, 109, 0.18);
  padding: 20px 20px 16px;
  font-family: 'Source Sans Pro', Arial, sans-serif;
  color: var(--dv-navy);
  user-select: none;
}

.dvm-top {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.dvm-day { font-size: 1rem; font-weight: 700; letter-spacing: 0.03em; }
.dvm-date { font-size: 0.65rem; font-weight: 600; margin-top: 3px; letter-spacing: 0.04em; opacity: 0.8; }
.dvm-time-block { text-align: right; }
.dvm-time { font-size: 1rem; font-weight: 700; }
.dvm-period { font-size: 0.65rem; font-weight: 600; margin-top: 3px; letter-spacing: 0.04em; opacity: 0.8; }

.dvm-tod-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  flex-shrink: 0;
}
.dvm-tod-icon img { height: 42px; width: auto; display: block; }

.dvm-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--dv-navy);
  text-align: center;
  padding-bottom: 12px;
  margin-bottom: 12px;
}

.dvm-divider { height: 1px; background: var(--dv-divider); margin: 0 0 10px; }

.dvm-today-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  color: var(--dv-subtle);
  margin-bottom: 8px;
}

.dvm-events { list-style: none; }
.dvm-event {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 5px 0;
  border-bottom: 1px solid var(--dv-bg-cta);
}
.dvm-event:last-child { border-bottom: none; }
.dvm-event--past { opacity: 0.45; }

.dvm-event-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--dv-bg-cta);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  color: var(--dv-navy);
}
.dvm-event-icon svg { display: block; }
.dvm-event-icon--medical { background: #fff0f0; }
.dvm-event-icon--hair    { background: #f3e8ff; }
.dvm-event-icon--meal    { background: #fff4e0; }
.dvm-event-icon--home    { background: #fffae6; }
.dvm-event-icon--people  { background: var(--dv-bg-cta); }

.dvm-event-name { font-size: 0.78rem; font-weight: 600; }
.dvm-event-time { font-size: 0.72rem; font-weight: 600; color: var(--dv-subtle); }

.dvm-next-card {
  margin-top: 12px;
  background: var(--dv-bg-cta);
  border-radius: 12px;
  padding: 10px 14px;
  transition: background 200ms ease, outline-color 200ms ease;
}
.dvm-next-label { font-size: 0.6rem; font-weight: 700; letter-spacing: 0.08em; color: var(--dv-accent); margin-bottom: 3px; }
.dvm-next-item { font-size: 0.9rem; font-weight: 700; margin-bottom: 2px; }
.dvm-next-time { font-size: 0.75rem; font-weight: 600; color: var(--dv-accent); }
.dvm-next-countdown { font-size: 0.72rem; font-weight: 400; color: var(--dv-subtle); margin-top: 2px; }

/* ── Landscape mockup variant ── */
.dv-mockup--landscape {
  display: grid;
  grid-template-columns: 3fr 2fr;
  grid-template-rows: auto auto auto 1fr;
  grid-template-areas:
    "title      title"
    "top        top"
    "todaylabel next"
    "events     next";
  column-gap: 24px;
  padding: 22px 26px 20px;
}
.dv-mockup--landscape .dvm-title { grid-area: title; font-size: 1.4rem; text-align: center; padding-bottom: 16px; margin-bottom: 16px; }
.dv-mockup--landscape .dvm-top {
  grid-area: top;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  text-align: left;
}
.dv-mockup--landscape .dvm-time-block { text-align: right; }
.dv-mockup--landscape .dvm-day   { font-size: 1.25rem; }
.dv-mockup--landscape .dvm-date  { font-size: 0.8rem; }
.dv-mockup--landscape .dvm-time  { font-size: 1.25rem; }
.dv-mockup--landscape .dvm-period { font-size: 0.8rem; }
.dv-mockup--landscape .dvm-tod-icon img { height: 56px; }
.dv-mockup--landscape .dvm-divider { display: none; }
.dv-mockup--landscape .dvm-today-label { grid-area: todaylabel; font-size: 0.75rem; margin-bottom: 10px; }
.dv-mockup--landscape .dvm-events { grid-area: events; }
.dv-mockup--landscape .dvm-event  { gap: 12px; padding: 9px 0; }
.dv-mockup--landscape .dvm-event-icon { width: 34px; height: 34px; }
.dv-mockup--landscape .dvm-event-name { font-size: 0.95rem; }
.dv-mockup--landscape .dvm-event-time { font-size: 0.88rem; }
.dv-mockup--landscape .dvm-next-card      { grid-area: next; margin-top: 0; padding: 14px 18px; }
.dv-mockup--landscape .dvm-next-label     { font-size: 0.7rem; }
.dv-mockup--landscape .dvm-next-item      { font-size: 1.15rem; }
.dv-mockup--landscape .dvm-next-time      { font-size: 0.92rem; }
.dv-mockup--landscape .dvm-next-countdown { font-size: 0.85rem; }

/* ── Transient "just updated" highlight (spec §9.3.5 / §15) ── */
@media (prefers-reduced-motion: no-preference) {
  .dv-updated {
    animation: dv-update-flash 700ms ease;
  }
  @keyframes dv-update-flash {
    0%   { background: var(--dv-bg-cta); outline: 2px solid var(--dv-accent); outline-offset: 2px; }
    100% { background: var(--dv-bg-cta); outline: 2px solid transparent; outline-offset: 2px; }
  }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .dv-updated {
    outline: 2px solid var(--dv-accent);
    outline-offset: 2px;
  }
}

/* ── Editor panel ── */
.editor-panel {
  background: #fff;
  border: 1.5px solid var(--dv-border-card);
  border-radius: 20px;
  padding: 28px;
}
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.field label { font-weight: 700; font-size: 0.92rem; color: var(--dv-navy); }
.field-optional { font-weight: 400; color: var(--dv-text-muted); }
.field select,
.field input {
  font: inherit;
  font-size: 1rem;
  padding: 12px 16px;
  border: 2px solid var(--dv-border);
  border-radius: 8px;
  min-height: 44px;
  background: #fff;
  color: var(--dv-navy);
}
.field select:focus-visible,
.field input:focus-visible {
  border-color: var(--dv-navy);
  outline: 2px solid var(--dv-accent);
  outline-offset: 2px;
}
.field[data-invalid="true"] input { border-color: var(--dv-error); }
.field-error { color: var(--dv-error); font-size: 0.85rem; }
.field-note { font-size: 0.85rem; color: var(--dv-text-muted); margin-top: 14px; }
#update-display-btn { width: 100%; }

/* ══════════════════════════════════════════ */
/* POST-UPDATE BAND                          */
/* ══════════════════════════════════════════ */
.after-update {
  background: var(--dv-bg-cta);
  margin-top: 8px;
}
.after-update-inner {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  flex-wrap: wrap;
}
.after-update-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  color: var(--dv-navy);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.after-update-copy { flex: 1 1 320px; }
.after-update-copy h2 { font-size: 1.3rem; margin-bottom: 8px; }
.after-update-copy p { color: var(--dv-text-mid); max-width: 520px; }
.after-update-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
  margin-left: auto;
}

/* ══════════════════════════════════════════ */
/* FOOTER                                    */
/* ══════════════════════════════════════════ */
.site-footer {
  border-top: 1px solid var(--dv-footer-rule);
  padding: 28px 0;
}
.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copy { font-size: 0.875rem; color: var(--dv-text-muted); }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--dv-text-muted); text-decoration: none; }
.footer-links a:hover { text-decoration: underline; color: var(--dv-navy); }

/* ══════════════════════════════════════════ */
/* RESPONSIVE                                */
/* ══════════════════════════════════════════ */
@media (max-width: 1023px) {
  .demo-panels { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  section { padding: 44px 0; }
  .container { padding: 0 28px; }

  .nav-toggle { display: flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--dv-divider);
    box-shadow: 0 12px 24px rgba(26, 43, 109, 0.08);
    padding: 8px 28px 20px;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 14px 0; border-bottom: 1px solid var(--dv-divider); }
  .site-nav a:last-child { border-bottom: none; }
  .nav-join-waitlist-desktop { display: none; }
  .nav-join-waitlist-mobile {
    display: block;
    margin-bottom: 12px;
    text-align: center;
    border-bottom: none;
  }
  .site-header .container { position: relative; }

  .after-update-actions { margin-left: 0; width: 100%; }
}

@media (max-width: 700px) {
  .demo-hero-row { flex-direction: column; align-items: flex-start; }
  .btn-reset { align-self: flex-start; }
  #update-display-btn { width: 100%; }
  .after-update-actions a { flex: 1 1 auto; text-align: center; }

  /* Scale down the landscape mockup on small screens; keep NEXT beside
     TODAY (this represents a landscape-oriented device). */
  .dv-mockup--landscape {
    grid-template-columns: 3fr 2fr;
    column-gap: 14px;
    padding: 16px 16px 14px;
  }
  .dv-mockup--landscape .dvm-title { font-size: 1.1rem; padding-bottom: 10px; margin-bottom: 10px; }
  .dv-mockup--landscape .dvm-top { gap: 6px; margin-bottom: 10px; }
  .dv-mockup--landscape .dvm-day   { font-size: 0.85rem; }
  .dv-mockup--landscape .dvm-date  { font-size: 0.55rem; }
  .dv-mockup--landscape .dvm-time  { font-size: 0.85rem; }
  .dv-mockup--landscape .dvm-period { font-size: 0.55rem; }
  .dv-mockup--landscape .dvm-tod-icon img { height: 32px; }
  .dv-mockup--landscape .dvm-today-label { margin-bottom: 6px; font-size: 0.6rem; }
  .dv-mockup--landscape .dvm-event { gap: 6px; padding: 5px 0; }
  .dv-mockup--landscape .dvm-event-icon { width: 24px; height: 24px; }
  .dv-mockup--landscape .dvm-event-name { font-size: 0.68rem; }
  .dv-mockup--landscape .dvm-event-time { font-size: 0.62rem; }
  .dv-mockup--landscape .dvm-next-card      { padding: 8px 10px; }
  .dv-mockup--landscape .dvm-next-label     { font-size: 0.58rem; }
  .dv-mockup--landscape .dvm-next-item      { font-size: 0.75rem; }
  .dv-mockup--landscape .dvm-next-time      { font-size: 0.65rem; }
  .dv-mockup--landscape .dvm-next-countdown { font-size: 0.6rem; }
}