/* ===== StudyRoom landing — brand tokens & base ===== */
:root {
  /* surfaces — a whisper of cool blue */
  --paper: #FCFDFF;
  --surface: #EEF2FB;
  --card: #FFFFFF;
  /* ink — near-black with the faintest blue undertone */
  --ink: #0C0E14;
  --ink-soft: #3A3E48;
  --muted: #878C99;
  --border: #E4E8F2;
  /* whisper-blue ambient */
  --whisper: #5570C4;
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  /* accents (tweakable) */
  --accent: #0C0E14;
  --accent-tint: color-mix(in srgb, var(--whisper) 12%, var(--paper));
  --accent-ink: color-mix(in srgb, var(--accent) 88%, #000);
  /* refined support accents — muted jewel tones */
  --green: #5E8060;
  --indigo: #4D6AB0;
  --amber: #C08A2E;
  --clay: #C05E36;
  --teal: #3F8C86;
  /* shape (tweakable) */
  --radius: 14px;
  --radius-sm: calc(var(--radius) * 0.62);
  --radius-lg: calc(var(--radius) * 1.5);
  --btn-radius: 13px;
  /* fonts (display tweakable) */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Hanken Grotesk', system-ui, -apple-system, sans-serif;
  /* shadows */
  --shadow-sm: 0 1px 2px rgba(35,29,23,.04), 0 2px 6px rgba(35,29,23,.05);
  --shadow-md: 0 2px 6px rgba(35,29,23,.05), 0 12px 28px rgba(35,29,23,.08);
  --shadow-lg: 0 8px 18px rgba(35,29,23,.07), 0 30px 60px rgba(35,29,23,.13);
  --maxw: 1180px;
}

/* ===== dark theme ===== */
html[data-theme="dark"] {
  --paper: #0F1219;
  --surface: #161B25;
  --card: #1A2030;
  --ink: #EEF1F8;
  --ink-soft: #BAC2D2;
  --muted: #7C8499;
  --border: #29303F;
  --whisper: #8AA0E6;
  --accent-tint: color-mix(in srgb, var(--whisper) 16%, var(--paper));
  --green: #7BA47D;
  --indigo: #7E97DD;
  --amber: #D6A95A;
  --clay: #DB7A52;
  --teal: #5BAAA3;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.3), 0 2px 6px rgba(0,0,0,.32);
  --shadow-md: 0 2px 6px rgba(0,0,0,.34), 0 14px 30px rgba(0,0,0,.42);
  --shadow-lg: 0 8px 20px rgba(0,0,0,.4), 0 34px 64px rgba(0,0,0,.55);
}
/* keep ink-on-paper UI legible in dark regardless of tweaked accent */
html[data-theme="dark"] .btn-primary { background-color: var(--ink); color: #0F1219; box-shadow: 0 2px 0 rgba(0,0,0,.5), var(--shadow-sm); }
html[data-theme="dark"] .btn-primary:hover { background-color: #fff; box-shadow: 0 4px 0 rgba(0,0,0,.5), var(--shadow-md); }
html[data-theme="dark"] .btn-primary:active { box-shadow: 0 1px 0 rgba(0,0,0,.5); }
html[data-theme="dark"] .btn .ripple { background-color: rgba(15,18,25,.22); }
html[data-theme="dark"] .step-n { color: color-mix(in srgb, var(--ink) 20%, var(--paper)); }
html[data-theme="dark"] .step.active .step-n { color: var(--ink); }
html[data-theme="dark"] .steps-track-fill { background-color: var(--whisper); }
html[data-theme="dark"] .steps-track .tick.on { background-color: var(--whisper); border-color: var(--whisper); }
html[data-theme="dark"] .pain .badge-x { background-color: color-mix(in srgb, var(--whisper) 18%, var(--paper)); color: var(--whisper); }
html[data-theme="dark"] .brand-mark { background-color: var(--ink); color: #0F1219; }
html[data-theme="dark"] .final-card { background-color: #060810; border: 1px solid var(--border); }
html[data-theme="dark"] .nav { background-color: color-mix(in srgb, var(--paper) 82%, transparent); }
html[data-theme="dark"] .hero-grain { mix-blend-mode: screen; opacity: .05; }
html[data-theme="dark"] .hero-glow span { opacity: .42; }
/* The final-CTA card and the footer are permanently dark surfaces in BOTH themes.
   Their interiors use --paper/--ink as "light/dark on dark" — pin those tokens
   locally so they don't invert when the page flips to the dark theme. */
.final-card, .footer { --paper: #FCFDFF; --ink: #0C0E14; }
html[data-theme="dark"] .final-card .btn-primary,
html[data-theme="dark"] .footer .btn-primary { background-color: var(--paper); color: var(--ink); }
html[data-theme="dark"] .final-card .btn-primary:hover,
html[data-theme="dark"] .footer .btn-primary:hover { background-color: #fff; }
html[data-theme="dark"] .footer-logo .brand-mark { background-color: #fff; color: var(--ink); }
/* smooth theme cross-fade */
html.theme-anim, html.theme-anim body,
html.theme-anim .nav, html.theme-anim .mininav,
html.theme-anim .feat, html.theme-anim .pain, html.theme-anim .mock,
html.theme-anim .band-surface, html.theme-anim .footer { transition: background-color .45s ease, color .45s ease, border-color .45s ease; }

* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.05; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; position: relative; z-index: 1; }
section { position: relative; }
.band-paper { background: var(--paper); }
.band-surface { background: var(--surface); }

/* ===== buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 9px; white-space: nowrap;
  font-family: var(--font-body); font-weight: 700; font-size: 17px;
  border-radius: var(--btn-radius); border: none; cursor: pointer;
  padding: 15px 24px; line-height: 1; transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 2px 0 color-mix(in srgb, var(--accent) 60%, #000), var(--shadow-sm); position: relative; overflow: hidden; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 4px 0 color-mix(in srgb, var(--accent) 60%, #000), var(--shadow-md); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 1px 0 color-mix(in srgb, var(--accent) 60%, #000); }
.btn-ghost { background: transparent; color: var(--ink); font-weight: 600; padding: 14px 8px; }
.btn-ghost:hover { color: var(--accent); }

/* ===== eyebrow / labels ===== */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; white-space: nowrap;
  font-family: var(--font-body); font-weight: 700; font-size: 13px;
  letter-spacing: .14em; text-transform: uppercase; color: var(--whisper);
}
.eyebrow::before { content:""; width: 22px; height: 2px; background: var(--whisper); border-radius: 2px; flex: none; }

.section-head { font-family: var(--font-body); font-weight: 700; font-size: 14px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }

/* ===== nav ===== */
.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--paper) 86%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid transparent; transition: border-color .3s, background .3s; }
.nav.scrolled { border-bottom-color: var(--border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 600; font-size: 22px; letter-spacing: -0.02em; }
/* Xollab wordmark — a big, prominent X in the whisper-blue theme accent */
.wm { white-space: nowrap; }
.wx { color: var(--whisper); font-size: 1.22em; font-weight: 700; letter-spacing: -0.02em; }
.brand-mark { width: 30px; height: 30px; border-radius: 9px; background: var(--accent); display: grid; place-items: center; color: #fff; box-shadow: var(--shadow-sm); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a.nav-textlink { font-weight: 600; font-size: 15.5px; color: var(--ink-soft); }
.nav-links a.nav-textlink:hover { color: var(--ink); }
.nav .btn-primary { color: #fff; }
html[data-theme="dark"] .nav .btn-primary { color: #0F1219; }
@media (max-width: 720px){ .nav-links .nav-textlink { display:none; } }

/* theme toggle */
.theme-btn { width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--border); background: var(--card); color: var(--ink-soft); display: grid; place-items: center; cursor: pointer; flex: none; transition: color .2s, border-color .2s, background .2s, transform .2s; position: relative; }
.theme-btn:hover { color: var(--ink); border-color: var(--muted); }
.theme-btn:active { transform: scale(.92); }
.theme-btn svg { position: absolute; transition: opacity .3s ease, transform .4s cubic-bezier(.3,1.3,.5,1); }
.theme-btn .ic-moon { opacity: 0; transform: rotate(-50deg) scale(.5); }
.theme-btn .ic-sun { opacity: 1; transform: rotate(0) scale(1); }
html[data-theme="dark"] .theme-btn .ic-moon { opacity: 1; transform: rotate(0) scale(1); }
html[data-theme="dark"] .theme-btn .ic-sun { opacity: 0; transform: rotate(50deg) scale(.5); }

/* ===== sticky mini-nav (appears on scroll-up) ===== */
.mininav { position: fixed; top: 14px; left: 50%; z-index: 60; transform: translate(-50%, -140%); opacity: 0; pointer-events: none; transition: transform .42s cubic-bezier(.2,.8,.2,1), opacity .42s ease; display: flex; align-items: center; gap: 14px; padding: 9px 9px 9px 16px; border-radius: 999px; background: color-mix(in srgb, var(--card) 88%, transparent); backdrop-filter: blur(14px) saturate(1.3); border: 1px solid var(--border); box-shadow: var(--shadow-md); }
.mininav.show { transform: translate(-50%, 0); opacity: 1; pointer-events: auto; }
.mininav .mn-brand { display: flex; align-items: center; gap: 9px; font-family: var(--font-display); font-weight: 600; font-size: 17px; letter-spacing: -0.02em; }
.mininav .mn-ring { position: relative; width: 30px; height: 30px; flex: none; }
.mininav .mn-ring svg { transform: rotate(-90deg); display: block; }
.mininav .mn-ring .ring-bg { stroke: var(--border); }
.mininav .mn-ring .ring-fg { stroke: var(--whisper); stroke-linecap: round; transition: stroke-dashoffset .12s linear; }
.mininav .mn-ring .mn-mark { position: absolute; inset: 0; display: grid; place-items: center; color: var(--whisper); }
.mininav .mn-links { display: flex; align-items: center; gap: 18px; }
.mininav .mn-links a.mn-text { font-weight: 600; font-size: 14.5px; color: var(--ink-soft); }
.mininav .mn-links a.mn-text:hover { color: var(--ink); }
.mininav .mn-cta { padding: 9px 16px; font-size: 14.5px; border-radius: 999px; }
@media (max-width: 640px){ .mininav .mn-text { display: none; } .mininav { gap: 10px; } }
@media (prefers-reduced-motion: reduce){ .mininav { transition: opacity .3s ease; } }

/* ===== hero ===== */
.hero { padding: 64px 0 80px; overflow: clip; }
.hero-grid { display: grid; gap: 56px; align-items: center; }
.hero[data-layout="split"] .hero-grid { grid-template-columns: 1.02fr 1.18fr; }
.hero[data-layout="stacked"] .hero-grid { grid-template-columns: 1fr; text-align: center; justify-items: center; }
.hero[data-layout="showcase"] { padding-bottom: 40px; }
.hero[data-layout="showcase"] .hero-grid { grid-template-columns: 1fr 1.16fr; }
.hero[data-layout="showcase"] .hero-copy { max-width: 520px; }

.hero-copy { max-width: 560px; }
.hero[data-layout="stacked"] .hero-copy { max-width: 760px; }
.hero h1 { font-size: clamp(40px, 5.4vw, 66px); margin: 22px 0 0; }
.hero[data-layout="stacked"] h1 { font-size: clamp(40px, 6vw, 72px); }
.hero .sub { margin-top: 22px; font-size: 20px; color: var(--ink-soft); max-width: 30em; }
.hero[data-layout="stacked"] .sub { margin-left: auto; margin-right: auto; }
.hero-cta { margin-top: 34px; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.hero[data-layout="stacked"] .hero-cta { justify-content: center; }
.hero-note { margin-top: 16px; font-size: 14.5px; color: var(--muted); display: flex; align-items: center; gap: 8px; }

/* hero stat row (count-ups) */
.hero-stats { margin-top: 36px; display: flex; gap: 0; flex-wrap: wrap; }
.hero[data-layout="stacked"] .hero-stats { justify-content: center; }
.hstat { padding: 0 26px; position: relative; }
.hstat:first-child { padding-left: 0; }
.hstat + .hstat::before { content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 1px; background: var(--border); }
.hstat .hs-num { font-family: var(--font-display); font-weight: 600; font-size: 38px; line-height: 1; color: var(--ink); font-variant-numeric: tabular-nums; display: flex; align-items: baseline; gap: 1px; }
.hstat .hs-num .pre { color: var(--muted); }
.hstat .hs-num .unit { font-size: 21px; margin-left: 3px; color: var(--whisper); }
.hstat .hs-label { margin-top: 9px; font-size: 13px; color: var(--muted); font-weight: 600; letter-spacing: .01em; }

/* ===== hero atmosphere: drifting glow + film grain ===== */
.hero-atmos { position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.hero-glow { position: absolute; inset: -20% -10%; }
.hero-glow span { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .5; will-change: transform; }
.hg-1 { width: 620px; height: 620px; top: -180px; left: 8%; background: radial-gradient(circle, color-mix(in srgb, var(--whisper) 42%, transparent), transparent 68%); animation: drift1 26s ease-in-out infinite; }
.hg-2 { width: 520px; height: 520px; top: 40px; right: 4%; background: radial-gradient(circle, color-mix(in srgb, var(--whisper) 30%, transparent), transparent 66%); animation: drift2 32s ease-in-out infinite; }
.hg-3 { width: 440px; height: 440px; bottom: -160px; left: 38%; background: radial-gradient(circle, color-mix(in srgb, var(--indigo) 24%, transparent), transparent 66%); animation: drift3 38s ease-in-out infinite; }
@keyframes drift1 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(70px, 46px) scale(1.12); } }
@keyframes drift2 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(-58px, 60px) scale(1.08); } }
@keyframes drift3 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(40px, -50px) scale(1.14); } }
.hero-grain { position: absolute; inset: -120%; background-image: var(--grain); background-size: 180px 180px; opacity: .035; mix-blend-mode: multiply; animation: grainShift 1.1s steps(6) infinite; }
@keyframes grainShift {
  0% { transform: translate(0,0); } 16% { transform: translate(-12px,8px); } 33% { transform: translate(8px,-14px); }
  50% { transform: translate(-10px,10px); } 66% { transform: translate(12px,6px); } 83% { transform: translate(-8px,-10px); } 100% { transform: translate(0,0); }
}
@media (prefers-reduced-motion: reduce){ .hero-glow span { animation: none; } .hero-grain { animation: none; } }

.hero-visual { position: relative; }
.hero[data-layout="stacked"] .hero-visual { margin-top: 52px; width: 100%; max-width: 940px; }
.hero[data-layout="showcase"] .hero-visual { transform: perspective(2000px) rotateY(-7deg) rotateX(1.5deg); transform-origin: left center; }

@media (max-width: 900px){
  .hero[data-layout="split"] .hero-grid, .hero[data-layout="showcase"] .hero-grid { grid-template-columns: 1fr; text-align: left; }
  .hero[data-layout="showcase"] .hero-visual { transform: none; }
  .hero-copy { max-width: 100%; }
}

/* ===== app mockup ===== */
.mock {
  position: relative; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); overflow: hidden;
}
.mock-bar { display: flex; align-items: center; gap: 7px; padding: 13px 16px; border-bottom: 1px solid var(--border); background: color-mix(in srgb, var(--surface) 50%, var(--card)); }
.mock-dot { width: 11px; height: 11px; border-radius: 50%; background: var(--border); }
.mock-bar .mb-title { margin-left: 10px; font-size: 13px; font-weight: 600; color: var(--muted); white-space: nowrap; }
.mock-bar .mb-live { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 700; letter-spacing: .02em; color: var(--muted); background: var(--surface); border: 1px solid var(--border); padding: 4px 9px; border-radius: 20px; white-space: nowrap; transition: color .3s, background .3s, border-color .3s; }
.mock-bar .mb-live-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); }
.mock-bar .mb-live.on { color: var(--whisper); border-color: color-mix(in srgb, var(--whisper) 35%, var(--border)); background: color-mix(in srgb, var(--whisper) 12%, var(--card)); }
.mock-bar .mb-live.on .mb-live-dot { background: var(--whisper); box-shadow: 0 0 0 3px color-mix(in srgb, var(--whisper) 22%, transparent); }
@media (max-width: 460px){ .mock-bar .mb-live { display: none; } }
.mock-body { display: grid; grid-template-columns: 224px 1fr; height: 438px; }

/* sidebar */
.ms { border-right: 1px solid var(--border); background: color-mix(in srgb, var(--surface) 36%, var(--card)); padding: 14px; display: flex; flex-direction: column; gap: 14px; }
.room-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 13px; box-shadow: var(--shadow-sm); }
.room-card .rc-top { display: flex; align-items: center; gap: 9px; }
.rc-emoji { width: 32px; height: 32px; border-radius: 8px; background: var(--accent-tint); display: grid; place-items: center; font-size: 17px; color: var(--accent); }
.rc-name { font-weight: 700; font-size: 13px; line-height: 1.15; white-space: nowrap; }
.rc-code { font-size: 10.5px; color: var(--muted); margin-top: 3px; font-variant-numeric: tabular-nums; letter-spacing: .03em; white-space: nowrap; }
.rc-members { display: flex; margin-top: 11px; }
.rc-members .av { width: 24px; height: 24px; border-radius: 50%; border: 2px solid var(--card); margin-left: -7px; font-size: 10.5px; font-weight: 700; color: #fff; display: grid; place-items: center; }
.rc-members .av:first-child { margin-left: 0; }
.rc-members .more { background: var(--surface); color: var(--ink-soft); border:2px solid var(--card); }

.nav-list { display: flex; flex-direction: column; gap: 2px; }
.nav-item { display: flex; width: 100%; text-align: left; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 9px; font-size: 13.5px; font-weight: 600; color: var(--ink-soft); cursor: pointer; background: none; border: none; font-family: inherit; transition: background .16s ease, color .16s ease, transform .1s ease; }
.nav-item:hover { background: color-mix(in srgb, var(--surface) 70%, var(--card)); color: var(--ink); }
.nav-item:active { transform: scale(.98); }
.nav-item.is-soon { color: var(--muted); }
.nav-item.pulse { animation: navShake .42s ease; }
@keyframes navShake { 0%,100%{transform:translateX(0);} 20%{transform:translateX(-4px);} 40%{transform:translateX(4px);} 60%{transform:translateX(-3px);} 80%{transform:translateX(2px);} }
.nav-item.pulse .soon { background: color-mix(in srgb, var(--amber) 22%, var(--card)); color: var(--amber); }
.nav-item .ni-ic { width: 17px; height: 17px; color: var(--muted); flex: none; }
.nav-item.active { background: var(--accent-tint); color: var(--accent-ink); }
.nav-item.active .ni-ic { color: var(--accent); }
.nav-item .soon { margin-left: auto; font-size: 9.5px; font-weight: 700; letter-spacing: .04em; color: var(--muted); background: var(--surface); padding: 2px 6px; border-radius: 20px; text-transform: uppercase; }

/* chat panel */
.mp-wrap { position: relative; overflow: hidden; }
.mp { display: flex; flex-direction: column; height: 100%; animation: mpIn .4s cubic-bezier(.2,.7,.2,1); }
@keyframes mpIn { from { opacity: .7; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce){ .mp { animation: none; } }
.mp-head { display: flex; align-items: center; gap: 9px; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.mp-head .mp-title { font-family: var(--font-display); font-weight: 600; font-size: 17px; }
.mp-head .mp-meta { margin-left: auto; font-size: 12px; color: var(--muted); display:flex; align-items:center; gap:6px; }
.dot-live { width: 7px; height: 7px; border-radius: 50%; background: var(--whisper); box-shadow: 0 0 0 3px color-mix(in srgb, var(--whisper) 22%, transparent); }
.mp-msgs { flex: 1; padding: 18px; display: flex; flex-direction: column; gap: 15px; }
.msg { display: flex; gap: 11px; align-items: flex-start; }
.msg .av { width: 30px; height: 30px; border-radius: 50%; flex: none; font-size: 12px; font-weight: 700; color: #fff; display: grid; place-items: center; }
.msg .bubble-wrap { display: flex; flex-direction: column; gap: 3px; }
.msg .who { font-size: 12px; font-weight: 700; color: var(--ink-soft); display:flex; gap:7px; align-items:baseline; }
.msg .who .time { font-weight: 500; color: var(--muted); font-size: 11px; }
.msg .bubble { background: var(--surface); border-radius: 4px 13px 13px 13px; padding: 9px 13px; font-size: 13.5px; color: var(--ink); max-width: 320px; }
.msg.me { flex-direction: row-reverse; }
.msg.me .bubble-wrap { align-items: flex-end; }
.msg.me .bubble { background: var(--accent); color: #fff; border-radius: 13px 4px 13px 13px; }
.typing { display: inline-flex; gap: 4px; align-items: center; padding: 11px 14px; }
.typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); animation: typingdot 1.3s infinite ease-in-out; }
.typing span:nth-child(2){ animation-delay: .18s; } .typing span:nth-child(3){ animation-delay: .36s; }
@keyframes typingdot { 0%, 60%, 100% { opacity: .3; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-3px); } }
.mp-input { margin: 0 16px 16px; display: flex; align-items: center; gap: 10px; border: 1px solid var(--border); border-radius: 11px; padding: 11px 14px; background: var(--card); }
.mp-input .ph { color: var(--muted); font-size: 13.5px; flex: 1; }
.mp-input .send { width: 30px; height: 30px; border-radius: 8px; background: var(--accent); color: #fff; display: grid; place-items: center; flex: none; }
.caret { display:inline-block; width: 1.5px; height: 1.05em; background: var(--accent); margin-left: 1px; vertical-align: -2px; animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ===== tour panels: tasks / calendar / files ===== */
.av { border-radius: 50%; color: #fff; font-weight: 700; display: grid; place-items: center; flex: none; }
.tp-progwrap { padding: 16px 18px 6px; }
.tp-prog { height: 9px; border-radius: 6px; background: var(--surface); overflow: hidden; }
.tp-prog i { display: block; height: 100%; border-radius: 6px; background: var(--teal); transition: width .85s cubic-bezier(.4,0,.2,1); }
.tp-list { padding: 6px 18px 14px; }
.trow { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.trow:last-child { border-bottom: none; }
.tcheck { width: 21px; height: 21px; border-radius: 6px; border: 2px solid var(--border); display: grid; place-items: center; color: #fff; flex: none; transition: background .25s, border-color .25s; }
.tcheck.done { background: var(--teal); border-color: var(--teal); }
.trow .tlabel { flex: 1; min-width: 0; font-size: 13.5px; font-weight: 600; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.trow.done .tlabel { color: var(--muted); text-decoration: line-through; }
.trow .av { margin-left: auto; }

.cp { padding: 18px; }
.cp-week { display: grid; grid-template-columns: repeat(5, 1fr); gap: 7px; }
.cday { position: relative; border: 1px solid var(--border); border-radius: 10px; padding: 10px 6px 12px; text-align: center; }
.cday .dn { font-size: 10px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }
.cday .dd { font-size: 16px; font-weight: 700; margin-top: 3px; }
.cday.active { border-color: var(--indigo); background: color-mix(in srgb, var(--indigo) 8%, var(--paper)); }
.cday .cdot { position: absolute; bottom: 6px; left: 50%; transform: translateX(-50%); width: 6px; height: 6px; border-radius: 50%; background: var(--indigo); }
.cevent { margin-top: 16px; border: 1px solid color-mix(in srgb, var(--indigo) 45%, var(--border)); border-left: 4px solid var(--indigo); border-radius: 11px; padding: 13px 15px; background: color-mix(in srgb, var(--indigo) 6%, var(--paper)); animation: popIn .5s cubic-bezier(.2,1.3,.4,1); }
.cevent .ce-t { font-weight: 700; font-size: 14px; }
.cevent .ce-d { font-size: 12px; color: var(--muted); margin-top: 3px; }
@keyframes popIn { 0% { transform: scale(.86); } 60% { transform: scale(1.02); } 100% { transform: scale(1); } }

.flp { padding: 8px 18px 14px; }
.frow { display: flex; align-items: center; gap: 13px; padding: 11px 0; border-bottom: 1px solid var(--border); }
.frow:last-child { border-bottom: none; }
.frow .fic { width: 36px; height: 36px; border-radius: 9px; display: grid; place-items: center; color: #fff; flex: none; }
.frow .fn { font-size: 13.5px; font-weight: 700; white-space: nowrap; }
.frow > div { min-width: 0; flex: 1; }
.frow .fmeta { font-size: 11.5px; color: var(--muted); margin-top: 1px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.frow .av { margin-left: auto; }
.frow.isnew { animation: popIn .5s cubic-bezier(.2,1.3,.4,1); }
@media (prefers-reduced-motion: reduce){ .cevent, .frow.isnew { animation: none; } }

/* ===== live cursor ===== */
.mock-cursor { position: absolute; left: 0; top: 0; width: 22px; height: 22px; z-index: 30; pointer-events: none; transition: transform .58s cubic-bezier(.5,.05,.2,1); filter: drop-shadow(0 3px 4px rgba(12,14,20,.28)); }
.mock-cursor .ring { position: absolute; left: 50%; top: 50%; width: 12px; height: 12px; margin: -6px 0 0 -6px; border-radius: 50%; border: 2px solid var(--clay); opacity: 0; animation: clickPulse .55s ease-out; }
@keyframes clickPulse { 0% { opacity: .55; transform: scale(.4); } 100% { opacity: 0; transform: scale(2.6); } }
@media (prefers-reduced-motion: reduce){ .mock-cursor { display: none; } }

@media (max-width: 560px){ .mock-body { grid-template-columns: 1fr; } .mock .ms { display: none; } }

/* floating chips for showcase layout */
.float-chip { position: absolute; background: var(--card); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow-md); padding: 11px 14px; display: flex; align-items: center; gap: 10px; font-size: 13.5px; font-weight: 600; }
.float-chip .fc-ic { width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; flex: none; color: #fff; }
.float-chip small { display:block; font-weight: 500; color: var(--muted); font-size: 11.5px; }
.fc-1 { top: -20px; right: -20px; }
.fc-2 { bottom: 26px; left: -34px; }
@media (max-width: 1024px){ .float-chip { display: none; } }

/* ===== problem strip ===== */
.problem { padding: 76px 0; overflow: clip; }
.problem-head { text-align: center; max-width: 640px; margin: 0 auto 40px; }
.problem-head h2 { font-size: clamp(30px, 3.4vw, 40px); margin-top: 14px; text-wrap: balance; }
.pain-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.pain { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 22px 24px; box-shadow: var(--shadow-sm); position: relative; }
.pain .q { font-family: var(--font-display); font-size: 21px; line-height: 1.22; color: var(--ink); font-style: italic; }
.pain .tag { margin-top: 16px; font-size: 12.5px; font-weight: 600; color: var(--muted); display: flex; align-items: center; gap: 7px; }
.pain .badge-x { width: 18px; height: 18px; border-radius: 50%; background: color-mix(in srgb, var(--accent) 14%, var(--paper)); color: var(--accent); display: grid; place-items: center; font-size: 11px; flex: none; }
@media (max-width: 900px){ .pain-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px){ .pain-grid { grid-template-columns: 1fr; } }

/* ===== feature grid ===== */
.features { padding: 84px 0; overflow: clip; }
.features-head { max-width: 880px; margin-bottom: 46px; }
.features-head h2 { font-size: clamp(30px, 3.4vw, 46px); margin-top: 14px; line-height: 1.08; text-wrap: balance; }
.features-head p { margin-top: 16px; font-size: 19px; color: var(--ink-soft); max-width: 32em; }
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; perspective: 1200px; }
.feat { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-sm); transition: box-shadow .2s ease, border-color .2s ease, transform .3s cubic-bezier(.2,.7,.2,1); transform-style: preserve-3d; }
.feat:hover { box-shadow: var(--shadow-md); border-color: color-mix(in srgb, var(--accent) 30%, var(--border)); }
.feat.tilting { transition: box-shadow .2s ease, border-color .2s ease; box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--accent) 34%, var(--border)); }
.feat-top { display: flex; align-items: center; justify-content: space-between; }
.feat .feat-top, .feat h3, .feat p { transition: transform .25s cubic-bezier(.2,.7,.2,1); transform: translateZ(0); }
.feat.tilting .feat-top { transform: translateZ(42px); }
.feat.tilting h3 { transform: translateZ(26px); }
.feat.tilting p { transform: translateZ(14px); }
.feat-ic { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; color: #fff; transition: transform .25s cubic-bezier(.2,.7,.2,1), box-shadow .25s ease; }
.feat.tilting .feat-ic { transform: translateZ(22px) scale(1.06); box-shadow: var(--shadow-md); }
.feat .badge { font-size: 11px; font-weight: 700; letter-spacing: .03em; padding: 5px 10px; border-radius: 20px; text-transform: uppercase; white-space: nowrap; }
.badge-live { color: var(--whisper); background: color-mix(in srgb, var(--whisper) 13%, var(--paper)); display:inline-flex; align-items:center; gap:6px; }
.badge-live .dot-live { width:6px; height:6px; }
.badge-soon { color: var(--muted); background: var(--surface); }
.feat h3 { font-size: 23px; margin-top: 20px; }
.feat p { margin-top: 9px; font-size: 16px; color: var(--ink-soft); line-height: 1.55; }
@media (max-width: 880px){ .feat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px){ .feat-grid { grid-template-columns: 1fr; } }

/* ===== how it works ===== */
.how { padding: 84px 0; }
.how-head { max-width: 760px; margin-bottom: 50px; }
.how-head h2 { font-size: clamp(30px, 3.6vw, 46px); margin-top: 14px; line-height: 1.08; text-wrap: balance; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; position: relative; padding-top: 32px; }
.steps-track { position: absolute; top: 0; left: 0; right: 0; height: 3px; border-radius: 3px; background: var(--border); overflow: hidden; }
.steps-track-fill { height: 100%; width: 0%; background: var(--accent); border-radius: 3px; }
.steps-track .tick { position: absolute; top: 50%; width: 9px; height: 9px; margin: -4.5px 0 0 -4.5px; border-radius: 50%; background: var(--paper); border: 2px solid var(--border); transition: background .35s ease, border-color .35s ease, transform .35s ease; }
.steps-track .tick.on { background: var(--accent); border-color: var(--accent); transform: scale(1.15); }
.step { position: relative; }
.step-n { font-family: var(--font-display); font-size: 56px; font-weight: 600; line-height: 1; color: color-mix(in srgb, var(--accent) 20%, var(--paper)); transition: color .45s ease; font-variant-numeric: tabular-nums; }
.step.active .step-n { color: var(--accent); }
.step h3 { font-size: 22px; margin-top: 16px; }
.step p { margin-top: 10px; font-size: 16.5px; color: var(--ink-soft); }
@media (max-width: 760px){ .steps { grid-template-columns: 1fr; gap: 32px; padding-top: 0; } .steps-track { display: none; } }

/* ===== trust strip ===== */
.trust { padding: 26px 0; }
.trust-inner { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: 30px 36px; display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.trust-item { display: flex; gap: 15px; align-items: flex-start; }
.trust-ic { width: 42px; height: 42px; border-radius: 11px; background: var(--accent-tint); color: var(--accent); display: grid; place-items: center; flex: none; }
.trust-item .ti-t { font-weight: 700; font-size: 17px; }
.trust-item .ti-d { color: var(--ink-soft); font-size: 15px; margin-top: 3px; }
@media (max-width: 700px){ .trust-inner { grid-template-columns: 1fr; gap: 22px; } }

/* ===== final CTA ===== */
.final { padding: 96px 0 100px; overflow: clip; }
.final-card { position: relative; overflow: hidden; background: var(--ink); color: var(--paper); border-radius: var(--radius-lg); padding: 72px 48px; text-align: center; }
.final-card h2 { color: var(--paper); font-size: clamp(32px, 4.4vw, 54px); max-width: 16em; margin: 0 auto; text-wrap: balance; }
.final-card .fc-cta { margin-top: 36px; display: flex; flex-direction: column; align-items: center; gap: 14px; }
.final-card .fc-small { font-size: 14.5px; color: color-mix(in srgb, var(--paper) 60%, transparent); }
.final-deco { position: absolute; border-radius: 50%; filter: blur(2px); }
.final-card .btn-primary { background: var(--paper); color: var(--ink); box-shadow: 0 2px 0 rgba(255,255,255,.25), var(--shadow-md); }
.final-card .btn-primary:hover { background: #fff; box-shadow: 0 4px 0 rgba(255,255,255,.3), var(--shadow-lg); }

/* divider on dark card */
.fc-divider { position: relative; margin: 38px auto 22px; max-width: 460px; display: flex; align-items: center; justify-content: center; }
.fc-divider::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 1px; background: color-mix(in srgb, var(--paper) 18%, transparent); }
.fc-divider span { position: relative; background: var(--ink); padding: 0 14px; font-size: 12.5px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: color-mix(in srgb, var(--paper) 52%, transparent); }
html[data-theme="dark"] .fc-divider span { background: #060810; }

/* room-code join form */
.rcj { display: flex; gap: 10px; max-width: 460px; margin: 0 auto; align-items: stretch; }
.rcj-field { flex: 1; display: flex; align-items: center; gap: 9px; padding: 0 14px; background: color-mix(in srgb, var(--paper) 9%, transparent); border: 1.5px solid color-mix(in srgb, var(--paper) 22%, transparent); border-radius: var(--btn-radius); transition: border-color .2s, background .2s; }
.rcj-field:focus-within { border-color: color-mix(in srgb, var(--paper) 55%, transparent); background: color-mix(in srgb, var(--paper) 13%, transparent); }
.rcj-key { color: color-mix(in srgb, var(--paper) 60%, transparent); display: grid; place-items: center; flex: none; }
.rcj-input { flex: 1; min-width: 0; background: none; border: none; outline: none; color: var(--paper); font-family: var(--font-body); font-weight: 700; font-size: 16px; letter-spacing: .12em; padding: 15px 0; }
.rcj-input::placeholder { color: color-mix(in srgb, var(--paper) 40%, transparent); letter-spacing: .12em; font-weight: 600; }
.rcj-btn { flex: none; padding: 15px 24px; }
.rcj.busy .rcj-btn { opacity: .9; }
.rcj-spin { display: inline-block; width: 14px; height: 14px; border-radius: 50%; border: 2px solid color-mix(in srgb, var(--ink) 30%, transparent); border-top-color: var(--ink); vertical-align: -2px; margin-right: 4px; animation: rcjspin .7s linear infinite; }
@keyframes rcjspin { to { transform: rotate(360deg); } }
.rcj-done { max-width: 460px; margin: 0 auto; display: flex; align-items: center; gap: 14px; text-align: left; padding: 16px 18px; border-radius: var(--radius); background: color-mix(in srgb, var(--green) 22%, var(--ink)); border: 1px solid color-mix(in srgb, var(--green) 50%, transparent); animation: popIn .5s cubic-bezier(.2,1.3,.4,1); }
.rcj-check { flex: none; width: 30px; height: 30px; border-radius: 50%; background: var(--green); color: #fff; display: grid; place-items: center; }
.rcj-done-t { font-weight: 700; font-size: 16px; color: var(--paper); }
.rcj-done-t b { letter-spacing: .06em; }
.rcj-done-d { font-size: 13.5px; color: color-mix(in srgb, var(--paper) 72%, transparent); margin-top: 3px; }
.linklike { background: none; border: none; padding: 0; font: inherit; white-space: nowrap; color: var(--paper); font-weight: 700; text-decoration: underline; text-underline-offset: 2px; cursor: pointer; }
.linklike:hover { opacity: .8; }
@media (max-width: 520px){ .rcj { flex-direction: column; } .rcj-done { flex-direction: row; } }
@media (prefers-reduced-motion: reduce){ .rcj-spin { animation: none; } .rcj-done { animation: none; } }

/* ===== proof quote ===== */
.proof { padding: 40px 0 8px; }
.proof-card { max-width: 760px; margin: 0 auto; text-align: center; position: relative; }
.proof-mark { font-family: var(--font-display); font-size: 90px; line-height: .6; color: color-mix(in srgb, var(--whisper) 38%, var(--paper)); display: block; height: 44px; }
.proof-q { font-family: var(--font-display); font-weight: 500; font-size: clamp(24px, 3vw, 33px); line-height: 1.32; letter-spacing: -0.01em; color: var(--ink); margin: 0; text-wrap: balance; }
.proof-q em { font-style: italic; color: var(--whisper); }
.proof-by { margin-top: 26px; display: inline-flex; align-items: center; gap: 12px; text-align: left; }
.proof-av { width: 42px; height: 42px; border-radius: 50%; background: linear-gradient(135deg, var(--clay), color-mix(in srgb, var(--clay) 55%, var(--indigo))); color: #fff; display: grid; place-items: center; font-weight: 700; font-size: 15px; flex: none; }
.proof-name { font-weight: 700; font-size: 15.5px; color: var(--ink); }
.proof-role { font-size: 13.5px; color: var(--muted); }

/* magnetic buttons + click ripple */
.btn-magnet { will-change: transform; }
.btn .ripple { position: absolute; width: 14px; height: 14px; border-radius: 50%; background: rgba(255,255,255,.5); transform: translate(-50%, -50%); pointer-events: none; animation: ripple .62s ease-out forwards; }
.final-card .btn .ripple, .btn[data-ripple="dark"] .ripple { background: rgba(12,14,20,.16); }
@keyframes ripple { to { width: 360px; height: 360px; opacity: 0; } }
@media (prefers-reduced-motion: reduce){ .btn-magnet { transform: none !important; } .btn .ripple { display: none; } }
.final-tabs { position: absolute; inset: 0; opacity: .12; display: flex; align-items: center; justify-content: center; gap: 18px; pointer-events: none; }
.final-tabs .ft { width: 64px; height: 64px; border-radius: 16px; border: 1.5px solid var(--paper); display: grid; place-items: center; color: var(--paper); }

/* ===== footer (black) ===== */
.footer { background: var(--ink); color: #fff; padding: 66px 0 34px; }
.footer-top { display: grid; grid-template-columns: 1.45fr 1fr; gap: 48px; padding-bottom: 44px; }
.footer-brand { max-width: 480px; }
.footer-logo { color: #fff; font-size: 21px; }
.footer-logo .brand-mark { background: #fff; color: var(--ink); box-shadow: none; }
.footer-sub { margin-top: 12px; color: rgba(255,255,255,.9); font-size: 15px; font-weight: 700; letter-spacing: .01em; }
.footer-blurb { margin-top: 8px; color: rgba(255,255,255,.62); font-size: 15.5px; line-height: 1.55; }
/* the footer is the always-dark surface; keep the wordmark X bright there */
.footer .wx { color: #8AA0E6; }
.footer-cta { margin-top: 24px; background: #fff; color: var(--ink); box-shadow: none; }
.footer-cta:hover { background: rgba(255,255,255,.88); transform: translateY(-1px); }
/* app download buttons (iOS / Android / Desktop) */
.footer-dl-label { margin-top: 24px; font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.42); }
.footer-downloads { display: flex; flex-wrap: nowrap; gap: 8px; margin-top: 12px; }
.dl-btn { flex: 1 1 0; min-width: 0; display: inline-flex; align-items: center; gap: 9px; padding: 9px 12px; border-radius: 12px; border: 1px solid rgba(255,255,255,.22); background: rgba(255,255,255,.05); color: #fff; transition: background .15s ease, border-color .15s ease, transform .15s ease; }
.dl-btn:hover { background: rgba(255,255,255,.11); border-color: rgba(255,255,255,.45); transform: translateY(-1px); }
.dl-btn svg { width: 20px; height: 20px; flex: none; }
.dl-txt { display: flex; flex-direction: column; line-height: 1.12; text-align: left; }
.dl-txt small { font-size: 9.5px; font-weight: 600; color: rgba(255,255,255,.6); letter-spacing: .02em; white-space: nowrap; }
.dl-txt b { font-family: var(--font-display); font-size: 14.5px; font-weight: 600; letter-spacing: -0.01em; }
.footer-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.fcol-h { font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.42); margin-bottom: 12px; }
.footer-col a { display: block; color: rgba(255,255,255,.8); font-weight: 500; font-size: 15.5px; padding: 6px 0; transition: color .15s ease; }
.footer-col a:hover { color: #fff; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; border-top: 1px solid rgba(255,255,255,.13); padding-top: 26px; }
.footer-bottom span { color: rgba(255,255,255,.5); font-size: 14px; }
@media (max-width: 760px){
  .footer-top { grid-template-columns: 1fr; gap: 34px; }
  .footer-bottom { flex-direction: column; gap: 10px; align-items: flex-start; }
}

/* theme toggle: icons are span-wrapped in this static port, so the spans carry the
   position + animation that the prototype put on the <svg> directly */
.theme-btn .ic-sun, .theme-btn .ic-moon { position: absolute; inset: 0; display: grid; place-items: center; transition: opacity .3s ease, transform .4s cubic-bezier(.3,1.3,.5,1); }
.theme-btn .ic-sun svg, .theme-btn .ic-moon svg { position: static; transition: none; }

/* ===== scroll reveal (JS-armed so content stays visible without JS) ===== */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce){
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .typing span, .caret { animation: none; } html{ scroll-behavior:auto; }
}

/* ===== parallax depth ===== */
.px-layer { will-change: transform; }
.deco { position: absolute; pointer-events: none; z-index: 0; will-change: transform; }
.deco-ring { border: 2px solid var(--whisper); border-radius: 50%; opacity: .14; }
.deco-disc { background: var(--whisper); border-radius: 50%; opacity: .07; }
.deco-grid {
  background-image: radial-gradient(var(--ink) 1.2px, transparent 1.2px);
  background-size: 22px 22px; opacity: .05;
}
/* hero */
.d-hero-1 { width: 560px; height: 560px; top: -90px; right: -150px; }
.d-hero-2 { width: 190px; height: 190px; bottom: -30px; left: -70px; }
.d-hero-3 { width: 150px; height: 150px; top: 30px; left: 44%; }
/* problem */
.d-prob-1 { width: 440px; height: 440px; top: -150px; right: -120px; }
/* features */
.d-feat-1 { width: 520px; height: 520px; bottom: -200px; left: -180px; }
.d-feat-2 { width: 120px; height: 120px; top: 60px; right: 30px; }
@media (max-width: 700px){ .deco { display: none; } }
.final-tabs { will-change: transform; }
@media (prefers-reduced-motion: reduce){ .deco, .px-layer, .final-tabs { transform: none !important; } }