/* ---------- I Can landing — hardcore athletic ---------- */
:root{
  --bg:#07090d;
  --bg-elev:#0b1220;
  --bg-card:#0f1826;
  --line:rgba(255,255,255,0.07);
  --line-strong:rgba(255,255,255,0.14);
  --fg:#f4f6f8;
  --fg-dim:#9aa7b8;
  --fg-mute:#6b7789;
  --accent:#2dd4bf;      /* teal primary */
  --accent-2:#38bdf8;    /* sky */
  --orange:#f97316;
  --green:#22c55e;
  --purple:#a78bfa;
  --radius:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:'Archivo',system-ui,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body{font-size:16px;line-height:1.5}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}

/* typography */
.display{font-family:'Archivo',sans-serif;font-weight:900;letter-spacing:-0.04em;line-height:0.88;text-transform:uppercase}
.eyebrow{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:0.2em;text-transform:uppercase;color:var(--fg-dim)}
.mono{font-family:'JetBrains Mono',monospace}
.narrow{font-family:'Archivo Narrow',sans-serif}

/* layout */
.wrap{max-width:1440px;margin:0 auto;padding:0 40px}
@media (max-width:720px){ .wrap{padding:0 20px} }

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);background:rgba(7,9,13,0.65);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 40px;max-width:1440px;margin:0 auto}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:900;letter-spacing:-0.02em;font-size:18px;text-transform:uppercase}
.nav-logo img{width:28px;height:28px;object-fit:contain}
.nav-links{display:flex;gap:28px;align-items:center;flex-shrink:0}
.nav-links a{font-size:13px;color:var(--fg-dim);font-weight:500;transition:color .15s;white-space:nowrap}
.nav-links a:hover{color:var(--fg)}
.nav-links a.nav-cta{background:#fff;color:#000 !important;padding:9px 14px;border-radius:999px;font-weight:700;font-size:13px;letter-spacing:-0.01em;white-space:nowrap}
.nav-links a.nav-cta:hover{color:#000 !important;background:#e6e6e6}
@media (max-width:1000px){ .nav-links a:not(.nav-cta){display:none} .nav-inner{padding:14px 20px} }

/* ---- hero ---- */
.hero{position:relative;padding:140px 0 40px;overflow:hidden}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:80px 80px;mask-image:radial-gradient(ellipse at 50% 30%,#000 30%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse at 50% 30%,#000 30%,transparent 75%);pointer-events:none}
.hero-glow{position:absolute;top:-20%;left:50%;transform:translateX(-50%);width:1200px;height:800px;background:radial-gradient(ellipse,color-mix(in oklch,var(--accent) 30%,transparent) 0%,transparent 60%);pointer-events:none;filter:blur(20px)}

.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr 1fr;gap:40px;align-items:center;min-height:72vh}
@media (max-width:980px){ .hero-inner{grid-template-columns:1fr;gap:40px;text-align:left} }

.hero-tag{display:inline-flex;align-items:center;gap:10px;padding:6px 12px;border:1px solid var(--line-strong);border-radius:999px;margin-bottom:28px}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.4}}

.hero h1{font-family:'Archivo',sans-serif;font-weight:900;font-size:clamp(56px,9vw,148px);line-height:0.85;letter-spacing:-0.055em;margin:0;text-transform:uppercase}
.hero h1 .rot{display:inline-block;color:var(--accent);position:relative;min-width:0.5em}
.hero h1 .rot::after{content:"_";animation:blink 1.1s steps(2,end) infinite;color:var(--accent);font-weight:400;margin-left:2px}
@keyframes blink{50%{opacity:0}}

.hero-sub{color:var(--fg-dim);font-size:18px;line-height:1.55;max-width:520px;margin:28px 0 36px}
.hero-sub strong{color:var(--fg);font-weight:600}

.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 22px;border-radius:999px;font-weight:700;font-size:14px;letter-spacing:-0.01em;transition:transform .15s ease, background .2s;text-transform:uppercase}
.btn-primary{background:var(--accent);color:#041412}
.btn-primary:hover{transform:translateY(-1px);background:color-mix(in oklch,var(--accent) 88%,white)}
.btn-ghost{background:transparent;color:var(--fg);border:1px solid var(--line-strong)}
.btn-ghost:hover{border-color:var(--fg)}
.btn .arr{font-size:18px;line-height:1}

.appstore-badge{display:inline-flex;align-items:center;gap:10px;background:#000;border:1px solid var(--line-strong);color:#fff;padding:10px 18px;border-radius:12px;transition:border-color .15s;white-space:nowrap;flex-shrink:0}
.appstore-badge:hover{border-color:#fff}
.appstore-badge > div{display:flex;flex-direction:column;line-height:1}
.appstore-badge .as-sub{font-size:10px;letter-spacing:0.05em;opacity:0.7;line-height:1;white-space:nowrap}
.appstore-badge .as-main{font-family:'Archivo',sans-serif;font-size:19px;font-weight:600;letter-spacing:-0.01em;line-height:1.1;margin-top:2px;white-space:nowrap}

.hero-stats{display:flex;gap:28px;margin-top:56px;flex-wrap:wrap}
.hero-stat .n{font-family:'Archivo',sans-serif;font-weight:800;font-size:32px;letter-spacing:-0.03em;line-height:1}
.hero-stat .l{font-size:11px;letter-spacing:0.14em;text-transform:uppercase;color:var(--fg-mute);margin-top:6px}

.hero-visual{position:relative;display:flex;justify-content:center;align-items:center;min-height:640px}

/* ---- phone ---- */
.phone{position:relative;width:320px;aspect-ratio:9/19.5;background:#000;border-radius:44px;padding:10px;box-shadow:0 50px 120px -20px color-mix(in oklch,var(--accent) 30%,transparent),0 30px 60px rgba(0,0,0,0.6),inset 0 0 0 1.5px rgba(255,255,255,0.1);}
.phone::before{content:"";position:absolute;top:18px;left:50%;transform:translateX(-50%);width:100px;height:26px;background:#000;border-radius:999px;z-index:2}
.phone-screen{width:100%;height:100%;border-radius:36px;overflow:hidden;position:relative;background:#0b1220}
.phone-screen img{width:100%;height:100%;object-fit:cover;object-position:top}

.phone.phone-float{animation:float 7s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}

.phone-stack{position:relative;width:100%;display:flex;justify-content:center;align-items:center}
.phone-stack .phone{position:absolute}
.phone-stack .phone-back{transform:translate(-120px,40px) rotate(-8deg) scale(0.78);opacity:0.5;filter:blur(1px)}
.phone-stack .phone-back-2{transform:translate(120px,40px) rotate(8deg) scale(0.78);opacity:0.5;filter:blur(1px)}

/* ---- floating cards around hero phone ---- */
.float-card{position:absolute;background:var(--bg-card);border:1px solid var(--line-strong);border-radius:14px;padding:14px 16px;backdrop-filter:blur(10px);box-shadow:0 20px 40px rgba(0,0,0,0.4)}
.float-card .fc-row{display:flex;align-items:center;gap:10px}
.float-card .fc-ic{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.float-card .fc-label{font-size:10px;letter-spacing:0.15em;text-transform:uppercase;color:var(--fg-mute);font-family:'JetBrains Mono',monospace}
.float-card .fc-val{font-weight:800;font-size:20px;letter-spacing:-0.02em;margin-top:2px}
.float-card.fc-1{top:10%;left:-10px;animation:float 7s 0.5s ease-in-out infinite}
.float-card.fc-2{bottom:18%;right:-30px;animation:float 7s 1s ease-in-out infinite}
.float-card.fc-3{top:44%;right:-40px;animation:float 7s 1.5s ease-in-out infinite}

@media (max-width:980px){ .hero-visual{min-height:540px} .phone{width:280px} .float-card.fc-1{left:0} .float-card.fc-2{right:0} .float-card.fc-3{right:0} }

/* ---- logo-marquee ---- */
.marquee{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 0;margin-top:40px;overflow:hidden;position:relative}
.marquee-inner{display:flex;gap:64px;animation:scroll 40s linear infinite;white-space:nowrap}
@keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.marquee-item{font-family:'Archivo',sans-serif;font-weight:800;font-size:13px;letter-spacing:0.24em;text-transform:uppercase;color:var(--fg-mute);display:flex;align-items:center;gap:14px}
.marquee-item::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:0.6}

/* ---- sections ---- */
section{position:relative;padding:120px 0}
@media (max-width:720px){ section{padding:80px 0} }

.section-head{margin-bottom:80px;max-width:780px}
.section-head h2{font-family:'Archivo',sans-serif;font-weight:900;font-size:clamp(40px,6vw,88px);line-height:0.9;letter-spacing:-0.045em;text-transform:uppercase;margin:14px 0 20px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:10px}
.section-head .eyebrow::before{content:"";width:28px;height:1px;background:var(--accent)}
.section-head p{color:var(--fg-dim);font-size:18px;line-height:1.55;max-width:620px;margin:0}
.section-head h2 em{font-style:normal;color:var(--accent)}

/* how it works */
.how-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media (max-width:900px){ .how-grid{grid-template-columns:1fr} }

.how-card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:32px;position:relative;overflow:hidden;min-height:340px;display:flex;flex-direction:column;justify-content:space-between;transition:border-color .2s, transform .2s}
.how-card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.how-card .num{font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:0.2em;color:var(--fg-mute)}
.how-card h3{font-family:'Archivo',sans-serif;font-weight:900;font-size:36px;line-height:0.95;letter-spacing:-0.035em;text-transform:uppercase;margin:16px 0 12px}
.how-card p{color:var(--fg-dim);font-size:15px;line-height:1.55;margin:0}
.how-card.big{grid-column:span 2;min-height:420px}
@media (max-width:900px){ .how-card.big{grid-column:span 1} }

.pillar-bar{display:flex;gap:14px;margin-top:24px;flex-wrap:wrap}
.pillar{display:flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;border:1px solid var(--line-strong);font-size:12px;font-weight:600;letter-spacing:0.02em}
.pillar .ic{width:8px;height:8px;border-radius:50%}

/* AI coach */
.coach{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
@media (max-width:980px){ .coach{grid-template-columns:1fr} }
.chat{background:var(--bg-card);border:1px solid var(--line);border-radius:18px;padding:24px;display:flex;flex-direction:column;gap:14px;min-height:460px}
.chat-msg{max-width:85%;padding:14px 16px;border-radius:16px;font-size:14px;line-height:1.5}
.chat-msg.ai{background:#0b1a22;border:1px solid color-mix(in oklch,var(--accent) 20%,transparent);color:#d4f1ea;align-self:flex-start;border-top-left-radius:4px}
.chat-msg.user{background:var(--fg);color:#000;align-self:flex-end;border-top-right-radius:4px;font-weight:500}
.chat-hdr{display:flex;align-items:center;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.chat-hdr .av{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);display:flex;align-items:center;justify-content:center;font-size:16px}
.chat-hdr .tt{font-weight:700;font-size:14px}
.chat-hdr .st{font-size:11px;color:var(--fg-mute);font-family:'JetBrains Mono',monospace;margin-left:auto}
.chat-hdr .st::before{content:"";display:inline-block;width:6px;height:6px;background:var(--green);border-radius:50%;margin-right:6px;vertical-align:middle}

/* feature-pillars — 3 pillars block */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--bg-card)}
@media (max-width:900px){ .pillars{grid-template-columns:1fr} }
.pillar-card{padding:40px 32px;border-right:1px solid var(--line);position:relative;min-height:360px;display:flex;flex-direction:column;justify-content:space-between}
.pillar-card:last-child{border-right:none}
@media (max-width:900px){ .pillar-card{border-right:none;border-bottom:1px solid var(--line)} .pillar-card:last-child{border-bottom:none} }
.pillar-card .pc-ic{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px}
.pillar-card h3{font-family:'Archivo',sans-serif;font-weight:900;font-size:28px;line-height:0.95;letter-spacing:-0.03em;text-transform:uppercase;margin:24px 0 10px}
.pillar-card p{color:var(--fg-dim);font-size:14px;line-height:1.55;margin:0}
.pillar-card .pc-list{margin-top:16px;display:flex;flex-direction:column;gap:6px}
.pillar-card .pc-list span{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:0.06em;color:var(--fg-mute);text-transform:uppercase}
.pillar-card .pc-list span::before{content:"→ ";color:var(--accent);opacity:0.7}

/* dashboard preview */
.dash-showcase{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
@media (max-width:980px){ .dash-showcase{grid-template-columns:1fr} }
.dash-card{background:var(--bg-card);border:1px solid var(--line);border-radius:18px;padding:24px;position:relative;overflow:hidden}
.dash-hdr{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.dash-hdr .dl{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:0.15em;text-transform:uppercase;color:var(--fg-mute)}
.dash-hdr .dt{font-weight:800;font-size:16px;letter-spacing:-0.01em}
.tabs{display:flex;background:var(--bg);border-radius:999px;padding:3px;font-size:11px;font-weight:600}
.tabs span{padding:6px 12px;border-radius:999px;color:var(--fg-mute)}
.tabs span.on{background:var(--accent);color:#041412}
.graph{height:200px;display:flex;align-items:flex-end;gap:6px;padding:20px 0}
.graph .bar{flex:1;border-radius:4px 4px 0 0;background:linear-gradient(180deg,var(--accent) 0%,color-mix(in oklch,var(--accent) 40%,transparent) 100%);position:relative;transition:height .5s;min-height:4px}
.graph .bar.low{opacity:0.3}
.graph-legend{display:flex;justify-content:space-between;font-family:'JetBrains Mono',monospace;font-size:10px;color:var(--fg-mute);margin-top:4px}
.metrics-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:20px}
.metric{background:var(--bg);border:1px solid var(--line);padding:14px;border-radius:10px}
.metric .m-l{font-size:10px;letter-spacing:0.14em;text-transform:uppercase;color:var(--fg-mute);font-family:'JetBrains Mono',monospace}
.metric .m-v{font-weight:800;font-size:22px;letter-spacing:-0.02em;margin-top:4px}
.metric .m-d{font-size:11px;color:var(--green);margin-top:2px;font-weight:600}
.metric .m-d.neg{color:var(--orange)}

/* sports */
.sports{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:900px){ .sports{grid-template-columns:repeat(2,1fr)} }
.sport{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:10px;min-height:160px;justify-content:space-between;transition:border-color .2s, transform .2s,background .2s}
.sport:hover{border-color:var(--accent);transform:translateY(-2px)}
.sport .s-ic{font-size:32px;line-height:1}
.sport .s-name{font-weight:800;font-size:16px;letter-spacing:-0.01em;text-transform:uppercase}
.sport .s-desc{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:0.08em;color:var(--fg-mute);text-transform:uppercase}

/* big mantra */
.mantra-row{padding:120px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center;overflow:hidden;position:relative}
.mantra-row .stripe{position:absolute;top:50%;left:-10%;right:-10%;height:140%;background:repeating-linear-gradient(-15deg,transparent 0,transparent 40px,color-mix(in oklch,var(--accent) 4%,transparent) 40px,color-mix(in oklch,var(--accent) 4%,transparent) 80px);transform:translateY(-50%);pointer-events:none}
.mantra-row h2{font-family:'Archivo',sans-serif;font-weight:900;font-size:clamp(60px,12vw,200px);line-height:0.82;letter-spacing:-0.055em;text-transform:uppercase;margin:0}
.mantra-row h2 .b{color:var(--accent)}

/* CTA bottom */
.cta-final{padding:100px 0;text-align:center;position:relative}
.cta-final h2{font-family:'Archivo',sans-serif;font-weight:900;font-size:clamp(48px,8vw,120px);line-height:0.9;letter-spacing:-0.045em;text-transform:uppercase;margin:0 0 24px}
.cta-final h2 em{font-style:normal;color:var(--accent)}
.cta-final p{color:var(--fg-dim);font-size:18px;max-width:520px;margin:0 auto 36px}
.cta-final .btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* footer */
footer{border-top:1px solid var(--line);padding:60px 0 40px;background:#04060a}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
@media (max-width:720px){ .foot-grid{grid-template-columns:1fr 1fr} }
.foot-brand{display:flex;flex-direction:column;gap:16px}
.foot-brand .nav-logo{font-size:20px}
.foot-brand p{color:var(--fg-mute);font-size:13px;line-height:1.6;max-width:320px;margin:0}
.foot-col h4{font-size:11px;letter-spacing:0.2em;text-transform:uppercase;color:var(--fg-mute);margin:0 0 18px;font-family:'JetBrains Mono',monospace}
.foot-col a{display:block;color:var(--fg-dim);font-size:14px;margin-bottom:10px;transition:color .15s}
.foot-col a:hover{color:var(--fg)}
.foot-bot{border-top:1px solid var(--line);margin-top:48px;padding-top:24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px}
.foot-bot .cp{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--fg-mute);letter-spacing:0.1em;text-transform:uppercase}
.foot-social{display:flex;gap:10px}
.foot-social a{width:36px;height:36px;border:1px solid var(--line-strong);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--fg-dim);transition:border-color .15s,color .15s}
.foot-social a:hover{border-color:var(--accent);color:var(--accent)}

/* tweaks panel */
.tweaks{position:fixed;bottom:24px;right:24px;z-index:100;background:var(--bg-card);border:1px solid var(--line-strong);border-radius:14px;padding:18px;width:260px;box-shadow:0 20px 40px rgba(0,0,0,0.5)}
.tweaks h4{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:0.2em;text-transform:uppercase;color:var(--fg-mute);margin:0 0 14px;display:flex;justify-content:space-between;align-items:center}
.tweaks h4 button{background:transparent;border:none;color:var(--fg-mute);font-size:16px;cursor:pointer;padding:0 4px}
.tweaks .tw-row{margin-bottom:14px}
.tweaks label{display:block;font-size:11px;color:var(--fg-dim);margin-bottom:6px;letter-spacing:0.05em;text-transform:uppercase;font-family:'JetBrains Mono',monospace}
.tweaks .sw{display:flex;gap:6px;flex-wrap:wrap}
.tweaks .sw button{width:28px;height:28px;border-radius:50%;border:2px solid var(--line-strong);cursor:pointer;transition:border-color .15s}
.tweaks .sw button.on{border-color:var(--fg)}
.tweaks select,.tweaks input[type="text"]{width:100%;background:var(--bg);border:1px solid var(--line);color:var(--fg);padding:8px 10px;border-radius:8px;font-family:inherit;font-size:13px}

/* light mode override */
body[data-theme="light"]{
  --bg:#f5f2ec;
  --bg-elev:#fff;
  --bg-card:#fff;
  --line:rgba(0,0,0,0.08);
  --line-strong:rgba(0,0,0,0.16);
  --fg:#0a0e14;
  --fg-dim:#4a5363;
  --fg-mute:#7c8594;
}
body[data-theme="light"] .nav{background:rgba(245,242,236,0.7)}
body[data-theme="light"] .btn-primary{color:#041412}
body[data-theme="light"] .appstore-badge{background:#000;color:#fff}
body[data-theme="light"] .chat-msg.user{background:#0a0e14;color:#fff}
body[data-theme="light"] .chat-msg.ai{background:#fff;border-color:color-mix(in oklch,var(--accent) 30%,transparent)}
body[data-theme="light"] footer{background:#e9e4da}