/* ============================================================
   EDUS — Infrastructure for higher education
   Design tokens from Edus High-Fidelity SaaS design system
   ============================================================ */

:root {
  /* Surfaces */
  --deep: #111111;          /* charcoal hero / footer / dark cards */
  --deep-2: #181a18;        /* slightly raised dark surface */
  --deep-3: #202220;        /* dark card */
  --white: #ffffff;
  --surface: #f9f9f9;
  --surface-2: #f3f3f3;
  --surface-gray: #f5f5f5;

  /* Text */
  --ink: #1a1c1c;
  --ink-soft: #5d5f5f;
  --ink-faint: #8a8d80;
  --on-dark: #f1f1f1;
  --on-dark-soft: #9a9d92;
  --on-dark-faint: #62655d;

  /* Lime */
  --lime: #d3f340;
  --lime-dim: #b5d31b;
  --on-lime: #181e00;

  /* Lines */
  --line: #e6e6e2;
  --line-dark: #2a2c2a;

  /* Type */
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'Space Mono', ui-monospace, 'SFMono-Regular', monospace;

  /* Layout */
  --container: 1240px;
  --margin: 64px;
  --radius: 0.25rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--white);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: var(--lime); color: var(--on-lime); }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ---------- Type utilities ---------- */
.mono {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.display {
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.02;
  font-size: clamp(40px, 7vw, 88px);
}
.headline {
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.08;
  font-size: clamp(30px, 4.6vw, 56px);
}
.kicker {
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.25;
}
.body-lg { font-size: 18px; line-height: 1.6; }
.muted { color: var(--ink-soft); }

/* ---------- Layout ---------- */
.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--margin);
}
section { position: relative; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  padding: 14px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .25s cubic-bezier(.2,.7,.3,1), background .2s, color .2s, border-color .2s;
  will-change: transform;
  white-space: nowrap;
}
.btn-lime { background: var(--lime); color: var(--on-lime); }
.btn-lime:hover { background: #c7ec1f; }
.btn-ghost-dark { background: transparent; color: var(--on-dark); border-color: var(--line-dark); }
.btn-ghost-dark:hover { border-color: #4a4d4a; background: rgba(255,255,255,.04); }
.btn-ghost-light { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost-light:hover { border-color: #c9c9c4; }
.btn-dark { background: var(--deep); color: var(--on-dark); }
.btn-dark:hover { background: #000; }
.btn .arr { transition: transform .25s cubic-bezier(.2,.7,.3,1); }
.btn:hover .arr { transform: translateX(3px); }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .35s, backdrop-filter .35s, border-color .35s;
  border-bottom: 1px solid transparent;
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px var(--margin);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav.scrolled {
  background: rgba(255,255,255,.82);
  backdrop-filter: blur(14px) saturate(1.2);
  border-color: var(--line);
}
/* default state sits over the dark hero — lime logo, light links */
.nav .brand { color: #D3F340; }
.nav .nav-links a, .nav .nav-cta .signin { color: var(--on-dark); }
/* once scrolled, the bar turns white — switch links to dark text, keep logo lime */
.nav.scrolled .nav-links a,
.nav.scrolled .nav-cta .signin { color: var(--ink); }
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 22px; letter-spacing: -0.04em;
}
.brand-logo { height: 26px; width: auto; display: block; }
.brand .dot {
  width: 11px; height: 11px; border-radius: 999px;
  background: var(--lime);
  box-shadow: 0 0 0 0 rgba(211,243,64,.6);
  animation: pulse 2.6s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(211,243,64,.55); }
  70% { box-shadow: 0 0 0 9px rgba(211,243,64,0); }
  100% { box-shadow: 0 0 0 0 rgba(211,243,64,0); }
}
.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links a { font-size: 15px; font-weight: 500; opacity: .82; transition: opacity .2s, color .35s; }
.nav-links a:hover { opacity: 1; }
.nav-cta { display: flex; align-items: center; gap: 18px; }
.nav-cta .signin { font-size: 15px; font-weight: 600; }
.nav .btn { padding: 11px 20px; font-size: 14px; }
.nav-toggle { display: none; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  background: var(--deep);
  color: var(--on-dark);
  padding: 184px 0 0;
  overflow: hidden;
}
.hero-shader {
  position: absolute; inset: 0; width: 100%; height: 100%;
  z-index: 0; display: block; pointer-events: none;
}
.hero > .wrap { position: relative; z-index: 2; }
.hero-scrim {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    linear-gradient(95deg, rgba(8,9,8,.74) 0%, rgba(8,9,8,.5) 26%, rgba(8,9,8,.12) 50%, transparent 64%),
    linear-gradient(0deg, rgba(8,9,8,.55) 0%, transparent 26%);
}
.hero-grid-bg {
  position: absolute; inset: 0; z-index: 1;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 80%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 80%);
  pointer-events: none;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 10px;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  padding: 7px 14px 7px 12px;
  color: var(--on-dark-soft);
  margin-bottom: 30px;
}

/* ---- wallpaper switcher ---- */
.wp-switch-wrap {
  position: absolute; left: var(--margin); bottom: 26px; z-index: 3;
  display: flex; align-items: center; gap: 12px;
  font-family: var(--mono);
}
.wp-eyebrow {
  font-size: 9.5px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--on-dark-faint);
}
.wp-switch { display: flex; gap: 6px; }
.wp-dot {
  width: 26px; height: 26px; border-radius: 8px; cursor: pointer;
  font-family: var(--mono); font-size: 11px; font-weight: 700;
  color: var(--on-dark-faint);
  background: rgba(255,255,255,.05);
  border: 1px solid var(--line-dark);
  backdrop-filter: blur(6px);
  transition: color .2s, background .2s, border-color .2s, transform .2s cubic-bezier(.2,.7,.3,1);
}
.wp-dot:hover { color: var(--on-dark); transform: translateY(-2px); border-color: #4a4d4a; }
.wp-dot.on {
  color: var(--on-lime); background: var(--lime); border-color: var(--lime);
  box-shadow: 0 6px 18px -6px rgba(211,243,64,.6);
}
.wp-label {
  font-size: 10.5px; letter-spacing: .04em; color: var(--on-dark-soft);
  min-width: 110px;
}
.wp-label.flash { animation: wpFlash .6s ease; }
@keyframes wpFlash { 0% { color: var(--lime); } 100% { color: var(--on-dark-soft); } }
@media (max-width: 880px) { .wp-switch-wrap { display: none; } }

.hero-tag .blip { width: 6px; height: 6px; border-radius: 999px; background: var(--lime); }
.hero h1 { max-width: 16ch; margin-bottom: 28px; }
.hero h1 .lime { color: var(--lime); }

/* ---- floating 3D glass orb (Three.js) ---- */
.hero .wrap { position: relative; }
.hero-orb {
  position: absolute; top: 96px; right: -24px;
  width: 380px; height: 380px;
  z-index: 4;
}
.hero-orb canvas { width: 100% !important; height: 100% !important; display: block; cursor: grab; position: relative; z-index: 2; touch-action: none; }
.hero-orb.grabbing canvas { cursor: grabbing; }
.orb-glow {
  position: absolute; inset: 14%;
  background: radial-gradient(circle at 50% 50%, rgba(176,210,20,.42), rgba(176,210,20,0) 68%);
  filter: blur(26px); z-index: 1; pointer-events: none;
}
.orb-hint {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  font-family: var(--mono); font-size: 10px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--on-dark-faint); z-index: 3; pointer-events: none;
  opacity: 0; transition: opacity .5s ease;
}
.hero-orb:hover .orb-hint { opacity: .8; }
@media (prefers-reduced-motion: reduce) { .orb-hint { display: none; } }
@media (max-width: 1100px) { .hero-orb { width: 300px; height: 300px; top: 80px; right: -30px; } }
@media (max-width: 880px) { .hero-orb { display: none; } }
.hero-sub { max-width: 56ch; color: var(--on-dark-soft); font-size: clamp(17px,1.5vw,20px); line-height: 1.6; margin-bottom: 38px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.hero-actions .note { color: var(--on-dark-faint); font-size: 13px; margin-left: 6px; }

/* word reveal */
.reveal-line { display: block; overflow: hidden; padding-bottom: 0.14em; margin-bottom: -0.14em; }
.reveal-word { display: inline-block; transform: translateY(120%); transition: transform .9s cubic-bezier(.16,1,.3,1); }
.reveal-word.in { transform: translateY(0); }

/* Hero dashboard mockup */
.hero-stage {
  margin-top: 84px;
  position: relative;
  padding-bottom: 0;
}
.dash {
  background: var(--deep-2);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-xl);
  border-bottom: none;
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  overflow: hidden;
  box-shadow: 0 -10px 80px rgba(0,0,0,.5);
  transform: translateY(40px);
  opacity: 0;
  transition: transform 1.1s cubic-bezier(.16,1,.3,1), opacity 1.1s;
}
.dash.in { transform: translateY(0); opacity: 1; }
.dash-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 18px; border-bottom: 1px solid var(--line-dark);
}
.dash-bar .tl { display: flex; gap: 7px; }
.dash-bar .tl i { width: 11px; height: 11px; border-radius: 999px; background: #34372f; display: block; }
.dash-bar .addr {
  margin-left: 14px; font-family: var(--mono); font-size: 11px;
  color: var(--on-dark-faint); background: var(--deep-3);
  border-radius: 999px; padding: 5px 14px;
}
.dash-body { display: grid; grid-template-columns: 210px 1fr; min-height: 440px; }
.dash-side { border-right: 1px solid var(--line-dark); padding: 20px 14px; }
.dash-side .org { display:flex; align-items:center; gap:9px; font-weight:700; letter-spacing:-.03em; font-size:15px; padding: 6px 8px 18px; }
.dash-side .org .dot { width:9px;height:9px;border-radius:999px;background:var(--lime); }
.nav-item { display:flex; align-items:center; gap:11px; padding: 10px 10px; border-radius: var(--radius); color: var(--on-dark-soft); font-size: 13.5px; font-weight:500; }
.nav-item .ic { width:16px;height:16px;opacity:.6; }
.nav-item.active { background: var(--deep-3); color: var(--on-dark); }
.nav-item.active .ic { opacity:1; }
.nav-group-label { font-family: var(--mono); font-size:10px; color: var(--on-dark-faint); padding: 18px 10px 8px; }
.dash-main { padding: 26px 28px; }
.dash-h { display:flex; align-items:center; justify-content:space-between; margin-bottom: 22px; }
.dash-h .t { font-size: 19px; font-weight:600; letter-spacing:-.02em; }
.dash-h .sub { font-family: var(--mono); font-size:11px; color: var(--on-dark-faint); }
.live { display:inline-flex; align-items:center; gap:7px; font-family:var(--mono); font-size:10px; color: var(--lime); border:1px solid var(--line-dark); border-radius:999px; padding:5px 11px; }
.live .d { width:6px;height:6px;border-radius:999px;background:var(--lime); animation:pulse 2s infinite; }
.kpis { display:grid; grid-template-columns: repeat(4,1fr); gap:12px; margin-bottom: 22px; }
.kpi { background: var(--deep-3); border:1px solid var(--line-dark); border-radius: var(--radius-lg); padding: 16px; }
.kpi .lab { font-family:var(--mono); font-size:10px; color: var(--on-dark-faint); margin-bottom: 12px; }
.kpi .val { font-size: 30px; font-weight: 700; letter-spacing:-.03em; }
.kpi .delta { font-size:12px; font-weight:600; margin-top:4px; }
.kpi .delta.up { color: var(--lime); }
.kpi .delta.down { color:#e08a8a; }
.chart {
  background: var(--deep-3); border:1px solid var(--line-dark); border-radius: var(--radius-lg);
  padding: 18px; height: 178px; display:flex; align-items:flex-end; gap: 10px;
}
.bar { flex:1; background: linear-gradient(180deg, #3a3d34, #2a2c26); border-radius: 3px 3px 0 0; position:relative; height: 0; transition: height 1s cubic-bezier(.16,1,.3,1); }
.bar.hl { background: linear-gradient(180deg, var(--lime), var(--lime-dim)); }

/* ============================================================
   TRUSTED / MARQUEE
   ============================================================ */
.trusted { background: var(--deep); color: var(--on-dark-soft); padding: 56px 0 92px; }
.trusted .lead { text-align:center; font-family:var(--mono); font-size:11px; color: var(--on-dark-faint); margin-bottom: 30px; }
.marquee { display:flex; overflow:hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee-track { display:flex; gap: 64px; padding-right: 64px; animation: scroll 38s linear infinite; white-space:nowrap; }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes scroll { to { transform: translateX(-50%); } }
.uni { display:flex; align-items:center; gap:12px; font-size:19px; font-weight:600; letter-spacing:-.02em; color: var(--on-dark-soft); opacity:.62; transition:opacity .3s; }
.uni:hover { opacity:1; }
.uni .mk { width:18px;height:18px;border:1.5px solid currentColor;border-radius:4px; transform:rotate(45deg); }

/* ============================================================
   SECTION SHELL
   ============================================================ */
.feature { padding: 120px 0; border-top: 1px solid var(--line); }
.feature .wrap { display:grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items:center; }
.feature.flip .wrap { direction: rtl; }
.feature.flip .wrap > * { direction: ltr; }
.feat-num { font-family: var(--mono); font-size: 12px; color: var(--lime-dim); margin-bottom: 22px; display:flex; align-items:center; gap:12px; }
.feat-num .ln { width:46px; height:1px; background: var(--line); }
.feat-num b { color: var(--ink); font-weight:700; }
.feature h2 { margin-bottom: 22px; }
.feature .lede { color: var(--ink-soft); font-size: 18px; line-height: 1.6; margin-bottom: 30px; max-width: 46ch; }
.feat-list { display:flex; flex-direction:column; gap: 4px; }
.feat-row { display:flex; gap: 16px; padding: 18px 0; border-top: 1px solid var(--line); }
.feat-row .ic {
  flex:none; width: 38px; height: 38px; border-radius: var(--radius);
  background: var(--surface-gray); display:grid; place-items:center; color: var(--ink);
}
.feat-row .ic svg { width:19px; height:19px; }
.feat-row .tx h4 { font-size: 16px; font-weight:600; letter-spacing:-.01em; margin-bottom: 5px; }
.feat-row .tx p { font-size: 14.5px; color: var(--ink-soft); line-height:1.5; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1); }
.reveal.in { opacity:1; transform: none; }
.reveal.d1 { transition-delay:.08s; }
.reveal.d2 { transition-delay:.16s; }
.reveal.d3 { transition-delay:.24s; }
.reveal.d4 { transition-delay:.32s; }

/* ---------- Mock panels (light) ---------- */
.panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 24px 60px -30px rgba(17,17,17,.18);
}
.panel-dark {
  background: var(--deep); color: var(--on-dark); border-color: var(--line-dark);
  box-shadow: 0 28px 70px -28px rgba(0,0,0,.5);
}
.p-bar { display:flex; align-items:center; justify-content:space-between; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.panel-dark .p-bar { border-color: var(--line-dark); }
.p-bar .t { font-size: 13px; font-weight:600; letter-spacing:-.01em; display:flex; align-items:center; gap:9px; }
.p-bar .t .gd { width:7px;height:7px;border-radius:999px;background:var(--lime); }
.p-tabs { display:flex; gap:6px; }
.p-tab { font-family:var(--mono); font-size:10px; padding:5px 10px; border-radius:999px; color:var(--ink-soft); border:1px solid var(--line); }
.p-tab.on { background: var(--ink); color: var(--white); border-color: var(--ink); }
.panel-dark .p-tab { color: var(--on-dark-soft); border-color: var(--line-dark); }
.panel-dark .p-tab.on { background: var(--lime); color: var(--on-lime); border-color: var(--lime); }

/* org tree mock */
.tree { padding: 30px 26px; display:flex; flex-direction:column; gap: 0; }
.tree .root, .tree .child { display:flex; align-items:center; gap:12px; padding: 13px 16px; border:1px solid var(--line); border-radius: var(--radius-lg); background: var(--white); font-size:14px; font-weight:600; letter-spacing:-.01em; }
.tree .root { background: var(--ink); color: var(--white); border-color: var(--ink); }
.tree .root .badge { margin-left:auto; font-family:var(--mono); font-size:9px; background: var(--lime); color: var(--on-lime); padding: 3px 8px; border-radius:999px; }
.tree .branch { padding-left: 26px; display:flex; flex-direction:column; gap:10px; margin-top:10px; position:relative; }
.tree .branch::before { content:''; position:absolute; left:11px; top:-6px; bottom:18px; width:1px; background: var(--line); }
.tree .child { position:relative; }
.tree .child::before { content:''; position:absolute; left:-15px; top:50%; width:14px; height:1px; background: var(--line); }
.tree .child .meta { margin-left:auto; font-family:var(--mono); font-size:10px; color: var(--ink-faint); font-weight:400; }
.tree .child .ico { width:14px;height:14px;color:var(--lime-dim); }

/* schedule / timetable mock */
.cal { padding: 18px; }
.cal-head { display:grid; grid-template-columns: 54px repeat(5,1fr); gap:8px; margin-bottom: 10px; }
.cal-head span { font-family:var(--mono); font-size:10px; color: var(--ink-faint); text-align:center; }
.cal-grid { display:grid; grid-template-columns: 54px repeat(5,1fr); grid-auto-rows: 38px; gap:8px; }
.cal-grid .time { font-family:var(--mono); font-size:9px; color: var(--ink-faint); display:flex; align-items:center; }
.cal-cell { background: var(--surface-gray); border-radius: 6px; }
.cls { border-radius:6px; padding:6px 8px; font-size:11px; font-weight:600; line-height:1.15; letter-spacing:-.01em; overflow:hidden; }
.cls small { display:block; font-family:var(--mono); font-size:8.5px; font-weight:400; opacity:.7; margin-top:2px; }
.cls.a { background: var(--lime); color: var(--on-lime); }
.cls.b { background: var(--ink); color: var(--white); }
.cls.c { background: #e7ead7; color: var(--ink); }

/* learn / messaging mock */
.learn { display:grid; grid-template-columns: 1.3fr 1fr; min-height: 360px; }
.lesson { padding: 22px; border-right:1px solid var(--line-dark); }
.lesson .vid { background: var(--deep-3); border:1px solid var(--line-dark); border-radius: var(--radius-lg); height: 150px; display:grid; place-items:center; margin-bottom: 16px; position:relative; }
.lesson .vid .play { width:46px;height:46px;border-radius:999px;background:var(--lime);display:grid;place-items:center;color:var(--on-lime); }
.lesson .vid .dur { position:absolute; right:10px; bottom:10px; font-family:var(--mono); font-size:9px; color:var(--on-dark-soft); background:rgba(0,0,0,.5); padding:3px 7px; border-radius:4px; }
.lesson h4 { font-size:16px; font-weight:600; letter-spacing:-.01em; margin-bottom:8px; }
.lesson .prog { height:5px; background: var(--deep-3); border-radius:999px; overflow:hidden; margin: 14px 0 8px; }
.lesson .prog i { display:block; height:100%; background: var(--lime); width:0; transition: width 1.2s cubic-bezier(.16,1,.3,1); border-radius:999px; }
.lesson .pmeta { font-family:var(--mono); font-size:10px; color: var(--on-dark-faint); }
.chat { padding: 18px; display:flex; flex-direction:column; gap: 12px; }
.chat .msg { max-width: 86%; padding: 11px 14px; border-radius: 14px; font-size: 13px; line-height:1.4; }
.chat .msg.them { background: var(--deep-3); color: var(--on-dark); border-bottom-left-radius:4px; }
.chat .msg.me { background: var(--lime); color: var(--on-lime); align-self:flex-end; border-bottom-right-radius:4px; font-weight:500; }
.chat .who { font-family:var(--mono); font-size:9px; color: var(--on-dark-faint); margin-bottom:5px; }
.chat .typing { display:flex; gap:4px; padding: 12px 14px; }
.chat .typing i { width:6px;height:6px;border-radius:999px;background:var(--on-dark-soft); animation: blink 1.4s infinite; }
.chat .typing i:nth-child(2){ animation-delay:.2s; } .chat .typing i:nth-child(3){ animation-delay:.4s; }
@keyframes blink { 0%,60%,100%{opacity:.3;} 30%{opacity:1;} }

/* analytics mock */
.an { padding: 22px; }
.an-top { display:flex; align-items:center; justify-content:space-between; margin-bottom:18px; }
.an-kpis { display:grid; grid-template-columns: repeat(3,1fr); gap:10px; margin-bottom: 18px; }
.an-kpi { border:1px solid var(--line); border-radius: var(--radius-lg); padding: 14px; }
.an-kpi .lab { font-family:var(--mono); font-size:9.5px; color: var(--ink-faint); margin-bottom:8px; }
.an-kpi .v { font-size: 25px; font-weight:700; letter-spacing:-.03em; }
.an-kpi .v small { font-size:13px; }
.line-chart { border:1px solid var(--line); border-radius: var(--radius-lg); padding: 16px; }
.line-chart svg { width:100%; height: 130px; display:block; }
.line-chart .path { stroke: var(--lime-dim); stroke-width:2.5; fill:none; stroke-dasharray: 1000; stroke-dashoffset: 1000; }
.line-chart.in .path { transition: stroke-dashoffset 1.6s ease; stroke-dashoffset: 0; }
.line-chart .area { fill: url(#limegrad); opacity:0; transition: opacity 1s .4s; }
.line-chart.in .area { opacity:.5; }

/* ============================================================
   USE CASES
   ============================================================ */
.usecases { padding: 120px 0; background: var(--surface-gray); border-top:1px solid var(--line); }
.uc-head { max-width: 50ch; margin-bottom: 50px; }
.uc-head h2 { margin-bottom: 18px; }
.uc-head p { color: var(--ink-soft); font-size:18px; line-height:1.6; }
.uc-grid { display:grid; grid-template-columns: repeat(2,1fr); gap: 16px; }
.uc {
  background: var(--white); border:1px solid var(--line); border-radius: var(--radius-lg);
  padding: 32px; transition: transform .4s cubic-bezier(.16,1,.3,1), border-color .3s, box-shadow .4s;
  position:relative; overflow:hidden; cursor: default;
}
.uc:hover { transform: translateY(-4px); border-color:#d4d6cf; box-shadow: 0 24px 50px -28px rgba(17,17,17,.22); }
.uc .num { font-family:var(--mono); font-size:11px; color: var(--ink-faint); }
.uc .ic { width:40px;height:40px;border-radius:var(--radius);background:var(--deep);color:var(--lime);display:grid;place-items:center;margin: 20px 0 18px; }
.uc .ic svg{width:20px;height:20px;}
.uc h3 { font-size: 21px; font-weight:600; letter-spacing:-.02em; margin-bottom:10px; }
.uc p { color: var(--ink-soft); font-size: 15px; line-height:1.55; margin-bottom: 18px; }
.uc .go { font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:7px;color:var(--ink); }
.uc .go .arr{transition:transform .25s;} .uc:hover .go .arr{transform:translateX(4px);}
.uc .sweep { position:absolute; left:0; right:0; bottom:0; height:3px; background:var(--lime); transform:scaleX(0); transform-origin:left; transition:transform .4s cubic-bezier(.16,1,.3,1); }
.uc:hover .sweep{ transform:scaleX(1); }

/* ============================================================
   METRICS STRIP
   ============================================================ */
.metrics { background: var(--deep); color: var(--on-dark); padding: 90px 0; }
.metrics .wrap { display:grid; grid-template-columns: repeat(4,1fr); gap: 30px; }
.metric { border-left:1px solid var(--line-dark); padding-left: 22px; }
.metric .v { font-size: clamp(40px,4.6vw,58px); font-weight:700; letter-spacing:-.04em; line-height:1; }
.metric .v .u { color: var(--lime); }
.metric .l { color: var(--on-dark-soft); font-size:14px; margin-top:12px; line-height:1.45; }

/* ============================================================
   PRICING
   ============================================================ */
.pricing { padding: 120px 0; background: var(--white); border-top: 1px solid var(--line); }
.pricing .ph-head { max-width: 54ch; margin: 0 auto 14px; text-align: center; }
.pricing .feat-num { justify-content: center; }
.pricing .feat-num .ln { display: none; }
.pricing h2 { text-align: center; margin-bottom: 14px; }
.pricing .sub { text-align: center; color: var(--ink-soft); font-size: 18px; line-height: 1.6; max-width: 50ch; margin: 0 auto 28px; }

/* billing toggle */
.pay-toggle { display: flex; justify-content: center; align-items: center; gap: 14px; margin-bottom: 56px; }
.pay-toggle .opt { font-size: 15px; font-weight: 600; color: var(--ink-faint); transition: color .25s; cursor: pointer; user-select: none; }
.pay-toggle .opt.on { color: var(--ink); }
.pay-toggle .save { font-family: var(--mono); font-size: 10px; color: var(--on-lime); background: var(--lime); padding: 4px 9px; border-radius: 999px; margin-left: 6px; letter-spacing: .06em; }
.pay-switch { width: 52px; height: 30px; border-radius: 999px; background: var(--ink); position: relative; cursor: pointer; border: none; flex: none; transition: background .25s; padding: 0; }
.pay-switch i { position: absolute; top: 3px; left: 3px; width: 24px; height: 24px; border-radius: 999px; background: var(--lime); transition: transform .3s cubic-bezier(.2,.7,.3,1); }
.pay-switch.yearly i { transform: translateX(22px); }

.pnote { text-align: center; font-family: var(--mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; margin-top: -16px; margin-bottom: 24px; }
.ptier-basic .pnote, .ptier-pop .pnote { color: var(--ink-faint); }
.ptier-pop .pnote { color: #5c6d00; }
.ptier-dark .pnote { color: var(--on-dark-faint); }

.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: center; }

.ptier {
  display: flex; flex-direction: column;
  border-radius: 26px; padding: 30px 26px 30px;
  position: relative; overflow: hidden;
  transition: transform .4s cubic-bezier(.16,1,.3,1), box-shadow .4s;
}
/* Basic — light */
.ptier-basic { background: #fbfbfa; border: 1px solid var(--line); box-shadow: 0 30px 60px -40px rgba(17,17,17,.25); }
/* Startup — lime, popular, taller */
.ptier-pop { background: var(--lime); padding-top: 0; box-shadow: 0 36px 80px -34px rgba(154,190,20,.55); }
/* Bigboy — dark */
.ptier-dark { background: var(--deep); }
.ptier:hover { transform: translateY(-6px); }

.pop-banner {
  background: var(--deep); color: var(--white);
  margin: 0 -26px 26px; padding: 14px;
  text-align: center; font-family: var(--mono); font-size: 11px; letter-spacing: .18em; text-transform: uppercase;
}
.ptier .pname { text-align: center; font-size: 26px; font-weight: 700; letter-spacing: -.03em; margin-bottom: 16px; }
.ptier-dark .pname { color: var(--white); }
.ptier-pop .pname, .ptier-basic .pname { color: var(--ink); }

.pprice { display: flex; justify-content: center; align-items: baseline; gap: 6px; margin-bottom: 26px; }
.pprice .amt { font-size: 58px; font-weight: 800; letter-spacing: -.04em; }
.pprice .per { font-size: 15px; font-weight: 500; margin-left: 2px; }
.ptier-basic .pprice .amt, .ptier-pop .pprice .amt { color: var(--ink); }
.ptier-dark .pprice .amt { color: var(--white); }
.ptier-basic .pprice .per { color: var(--ink-soft); }
.ptier-pop .pprice .per { color: #5c6d00; }
.ptier-dark .pprice .per { color: var(--on-dark-soft); }

/* feature box */
.pbox { border-radius: 18px; padding: 26px 22px; margin-bottom: 26px; flex: 1; }
.ptier-basic .pbox { background: #f2f2f0; }
.ptier-pop .pbox { background: #fbfee9; }
.ptier-dark .pbox { background: var(--white); }
.pbox ul { list-style: none; display: flex; flex-direction: column; gap: 15px; }
.pbox li { display: flex; align-items: flex-start; gap: 11px; font-size: 14.5px; font-weight: 500; line-height: 1.35; color: var(--ink); }
.pbox li .ar { flex: none; width: 15px; height: 15px; margin-top: 2px; color: var(--lime-dim); }
.ptier-dark .pbox li .ar { color: #7a9400; }

.pbtn {
  display: flex; align-items: center; justify-content: center;
  width: 100%; padding: 17px; border-radius: 999px;
  font-size: 15px; font-weight: 600; letter-spacing: -.01em;
  border: 1.5px solid transparent; cursor: pointer;
  transition: transform .25s cubic-bezier(.2,.7,.3,1), background .2s, color .2s;
}
.pbtn-outline { background: transparent; border-color: var(--ink); color: var(--ink); }
.pbtn-outline:hover { background: var(--ink); color: var(--white); }
.pbtn-dark { background: #000; color: var(--white); }
.pbtn-dark:hover { background: #000; }
.pbtn-outline-light { background: transparent; border-color: rgba(255,255,255,.5); color: var(--white); }
.pbtn-outline-light:hover { background: var(--lime); border-color: var(--lime); color: var(--on-lime); }
.pbtn:hover { transform: translateY(-2px); }

/* ---- pricing motion ---- */
/* price pops in */
.ptier .pprice .amt { display: inline-block; transform: scale(.65); opacity: 0; transition: transform .6s cubic-bezier(.2,1.35,.4,1), opacity .45s; transition-delay: .12s; }
.ptier.lit .pprice .amt { transform: scale(1); opacity: 1; }
.ptier .pprice .per { opacity: 0; transition: opacity .4s ease .35s; }
.ptier.lit .pprice .per { opacity: 1; }

/* feature rows stagger in */
.pbox li { opacity: 0; transform: translateX(-12px); transition: opacity .5s ease, transform .55s cubic-bezier(.16,1,.3,1), color .2s; }
.ptier.lit .pbox li { opacity: 1; transform: none; }
.ptier.lit .pbox li:nth-child(1) { transition-delay: .20s; }
.ptier.lit .pbox li:nth-child(2) { transition-delay: .26s; }
.ptier.lit .pbox li:nth-child(3) { transition-delay: .32s; }
.ptier.lit .pbox li:nth-child(4) { transition-delay: .38s; }
.ptier.lit .pbox li:nth-child(5) { transition-delay: .44s; }
.ptier.lit .pbox li:nth-child(6) { transition-delay: .50s; }
.ptier.lit .pbox li:nth-child(7) { transition-delay: .56s; }
.ptier.lit .pbox li:nth-child(8) { transition-delay: .62s; }
.ptier.lit .pbox li:nth-child(9) { transition-delay: .68s; }
.ptier.lit .pbox li:nth-child(10) { transition-delay: .74s; }
.pbox li .ar { transition: transform .25s cubic-bezier(.2,.7,.3,1); }
.pbox li:hover .ar { transform: translateX(4px); }
.ptier-dark .pbox li:hover { color: #000; }

/* glossy shine sweep on the popular card */
.ptier-pop::before {
  content: ''; position: absolute; top: 0; left: -65%; width: 45%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.55), transparent);
  transform: skewX(-18deg); pointer-events: none; z-index: 3;
  animation: shine 6.5s ease-in-out infinite;
}
@keyframes shine { 0% { left: -65%; } 16% { left: 165%; } 100% { left: 165%; } }
/* soft glow pulse on the popular card */
.ptier-pop { animation: limeGlow 4s ease-in-out infinite; }
@keyframes limeGlow {
  0%, 100% { box-shadow: 0 30px 70px -36px rgba(154,190,20,.5); }
  50%      { box-shadow: 0 42px 90px -30px rgba(154,190,20,.82); }
}
.pop-banner { position: relative; z-index: 4; }

@media (prefers-reduced-motion: reduce) {
  .ptier-pop::before { display: none; }
  .ptier-pop { animation: none; }
  .ptier .pprice .amt, .ptier .pprice .per, .pbox li { transition: none; opacity: 1; transform: none; }
}

/* ============================================================
   BIG CTA (scattered letters)
   ============================================================ */
.cta { background: var(--deep); color: var(--on-dark); padding: 150px 0 160px; text-align:center; overflow:hidden; }
.cta .eyebrow { font-family:var(--mono); font-size:11px; color: var(--lime); margin-bottom: 28px; }
.scatter { font-weight:700; letter-spacing:-.03em; line-height:1.0; font-size: clamp(44px, 8vw, 110px); display:flex; flex-wrap:wrap; justify-content:center; gap: 0; }
.scatter .ch { display:inline-block; opacity:0; transform: translateY(40px) rotate(8deg); transition: transform .7s cubic-bezier(.16,1,.3,1), opacity .7s; }
.scatter .ch.in { opacity:1; transform: none; }
.scatter .word { display:inline-flex; white-space:nowrap; }
.scatter .sp { width: .3em; }
.scatter .lime { color: var(--lime); }
.cta-actions { display:flex; gap:14px; justify-content:center; margin-top: 44px; flex-wrap:wrap; }
.cta-foot { margin-top: 26px; font-family:var(--mono); font-size:11px; color: var(--on-dark-faint); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: #0c0d0c; color: var(--on-dark-soft); padding: 70px 0 40px; }
.footer .top { display:grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 50px; border-bottom:1px solid var(--line-dark); }
.footer .brand { color: var(--on-dark); margin-bottom: 16px; }
.footer .brand-logo { height: 30px; }
.footer .blurb { font-size:14px; line-height:1.6; max-width: 34ch; }
.footer h5 { color: var(--on-dark); font-family:var(--mono); font-size:10px; letter-spacing:.12em; text-transform:uppercase; margin-bottom: 18px; }
.footer ul { list-style:none; display:flex; flex-direction:column; gap:11px; }
.footer ul a { font-size:14px; opacity:.78; transition:opacity .2s; } .footer ul a:hover{opacity:1;}
.footer .bottom { display:flex; align-items:center; justify-content:space-between; padding-top: 28px; font-size:12.5px; }
.footer .bottom .made { color: var(--on-dark-faint); }
.footer .bottom .legal { display:flex; gap:22px; } .footer .bottom .legal a{opacity:.7;}

/* ============================================================
   PLACEHOLDER NOTE
   ============================================================ */
.ph { outline: 1px dashed rgba(0,0,0,.12); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px){
  :root { --margin: 40px; }
  .feature .wrap { grid-template-columns:1fr; gap: 50px; }
  .feature.flip .wrap { direction:ltr; }
  .footer .top { grid-template-columns: 1fr 1fr; gap: 36px; }
  .metrics .wrap { grid-template-columns: 1fr 1fr; gap: 40px 30px; }
  .price-grid { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto; align-items: stretch; }
}
@media (max-width: 760px){
  :root { --margin: 22px; }
  .nav-links, .nav-cta .signin { display:none; }
  .hero { padding-top: 130px; }
  .dash-body { grid-template-columns: 1fr; }
  .dash-side { display:none; }
  .kpis { grid-template-columns: 1fr 1fr; }
  .uc-grid { grid-template-columns:1fr; }
  .learn { grid-template-columns:1fr; }
  .lesson { border-right:none; border-bottom:1px solid var(--line-dark); }
  .footer .top { grid-template-columns:1fr 1fr; }
  .footer .bottom { flex-direction:column; gap:14px; align-items:flex-start; }
  .an-kpis { grid-template-columns:1fr 1fr 1fr; }
}