/* DueBuddy — "paper correspondence" design system */
:root{
  --paper:#f7f3ec;
  --paper-2:#f1ebe0;
  --surface:#fffdf8;
  --ink:#211d17;
  --muted:#7a7466;
  --line:#e7e0d2;
  --brand:#0f766e;
  --brand-ink:#115e59;
  --brand-soft:#e3f0ee;
  --amber:#d97706;
  --terracotta:#c2410c;
  --danger:#b91c1c;
  --danger-soft:#fdecec;
  --success:#15803d;
  --success-soft:#e8f4ec;
  --font-display:'Fraunces',Georgia,'Times New Roman',serif;
  --font-body:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --shadow:0 1px 2px rgba(33,29,23,.05),0 8px 28px -12px rgba(33,29,23,.18);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  background:
    radial-gradient(1200px 600px at 80% -10%,rgba(15,118,110,.07),transparent 60%),
    radial-gradient(900px 500px at -10% 20%,rgba(217,119,6,.05),transparent 55%),
    var(--paper);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  line-height:1.62;
  overflow-x:hidden;
}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:var(--font-display);font-weight:600;letter-spacing:-.01em;line-height:1.12}

/* ---------- header ---------- */
header{position:sticky;top:0;background:rgba(247,243,236,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);z-index:50}
.nav{display:flex;align-items:center;gap:22px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:19px}
.brand img{width:32px;height:32px;border-radius:8px}
.nav .links{display:flex;gap:20px;margin-left:6px}
.nav .links a{color:var(--muted);font-size:14px;font-weight:500;text-decoration:none;transition:.15s}
.nav .links a:hover{color:var(--ink)}
.nav .spacer{flex:1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:10px;padding:12px 20px;font-size:15px;font-weight:600;font-family:var(--font-body);cursor:pointer;text-decoration:none;transition:transform .12s,box-shadow .12s,background .12s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px -6px rgba(15,118,110,.6)}
.btn-primary:hover{background:var(--brand-ink);transform:translateY(-1px)}
.btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-ink);transform:translateY(-1px)}
.btn-tg{background:var(--brand);color:#fff}
.btn-tg:hover{background:var(--brand-ink);transform:translateY(-1px)}

/* ---------- hero ---------- */
.hero{position:relative;padding:72px 0 44px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background:url(assets/hero-illustration.jpg) center/cover no-repeat;opacity:.2;z-index:0;pointer-events:none}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.02fr .98fr;gap:46px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--brand-soft);color:var(--brand-ink);font-size:13px;font-weight:700;border-radius:99px;padding:6px 14px;margin-bottom:18px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--brand);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.5);opacity:.5}}
.hero h1{font-size:52px;line-height:1.05}
.hero h1 .hl{position:relative;color:var(--brand);font-style:italic}
.hero h1 .hl::after{content:"";position:absolute;left:0;right:0;bottom:3px;height:8px;background:rgba(217,119,6,.28);z-index:-1;border-radius:3px}
.hero .sub{font-size:17.5px;color:var(--muted);margin:20px 0 28px;max-width:46ch}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap}
.hero .proof{display:flex;gap:22px;margin-top:28px;font-size:13.5px;color:var(--muted);flex-wrap:wrap}
.hero .proof b{display:block;color:var(--ink);font-family:var(--font-display);font-size:16px}

/* animated chase demo */
.chase{background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.chase .top{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--line);background:var(--paper-2)}
.chase .top .inv{font-family:var(--font-display);font-weight:600;font-size:15px}
.chase .top .amt{font-family:var(--font-display);font-weight:700;color:var(--brand-ink);font-size:15px}
.chase .thread{padding:8px 18px 16px;min-height:210px}
.chase .msg{margin-top:12px;padding:11px 14px;border-radius:12px;font-size:13.5px;background:var(--paper);border:1px solid var(--line);opacity:0;transform:translateY(6px);transition:.4s}
.chase .msg.show{opacity:1;transform:none}
.chase .msg .when{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;margin-bottom:3px}
.chase .msg.loyal .when{color:var(--brand-ink)}
.chase .msg.neutral .when{color:var(--amber)}
.chase .msg.firm .when{color:var(--terracotta)}
.chase .msg.paid{background:var(--success-soft);border-color:#bcddc7}
.chase .msg.paid .when{color:var(--success)}
.chase .paid-badge{display:inline-flex;align-items:center;gap:6px;background:var(--success);color:#fff;font-size:11.5px;font-weight:700;border-radius:99px;padding:4px 11px;margin-left:8px;animation:pop .45s cubic-bezier(.175,.885,.32,1.4)}
@keyframes pop{from{transform:scale(0)}to{transform:scale(1)}}
.chase .cursor{display:inline-block;width:2px;height:13px;background:var(--brand);vertical-align:-2px;animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}

/* ---------- sections ---------- */
section{padding:52px 0}
.sec-head{max-width:680px;margin-bottom:32px}
.sec-head.center{margin:0 auto 36px;text-align:center}
.sec-head .kicker{font-size:12.5px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--brand-ink);margin-bottom:10px}
.sec-head h2{font-size:36px}
.sec-head p{color:var(--muted);margin-top:12px;font-size:16px}

/* escalation dial */
.dial{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:var(--shadow)}
.dial .track{position:relative;height:10px;border-radius:99px;background:linear-gradient(90deg,var(--brand),var(--amber) 50%,var(--terracotta));margin:26px 0 22px}
.dial .dot{position:absolute;top:50%;left:0;width:22px;height:22px;border-radius:50%;background:#fff;border:3px solid var(--brand);transform:translate(-50%,-50%);transition:left 1.4s cubic-bezier(.4,0,.2,1),border-color 1.4s}
.dial .nodes{display:flex;justify-content:space-between}
.dial .node{font-size:13px;font-weight:700}
.dial .node small{display:block;font-weight:500;color:var(--muted);font-size:12px;margin-top:2px}
.dial.in .dot{left:100%;border-color:var(--terracotta)}

/* bridge contrast */
.bridge-fig,.tones-fig{margin-top:4px}
.bridge-fig img,.tones-fig img{width:100%;border-radius:16px;border:1px solid var(--line);box-shadow:var(--shadow)}
.bridge-fig figcaption,.tones-fig figcaption{margin-top:12px;text-align:center;color:var(--muted);font-size:13.5px}

/* comparison */
.cmp{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.cmp .col{border-radius:16px;padding:24px;border:1px solid var(--line);background:var(--surface)}
.cmp .col.ours{background:var(--brand-soft);border-color:#bfe0dc}
.cmp h3{font-family:var(--font-display);font-size:17px;margin-bottom:14px}
.cmp .row{display:flex;align-items:flex-start;gap:10px;padding:9px 0;font-size:14px;border-top:1px solid var(--line)}
.cmp .row:first-of-type{border-top:none}
.cmp .ok{color:var(--success);font-weight:700}
.cmp .no{color:#c9c4b8;font-weight:700}

/* formats strip */
.formats{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.format{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:9px 15px;font-size:13.5px;font-weight:600;box-shadow:var(--shadow);transition:transform .15s}
.format:hover{transform:translateY(-2px) rotate(-1deg)}
.format em{font-style:normal;color:var(--brand-ink)}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.plan{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:26px;position:relative;box-shadow:var(--shadow);transition:transform .15s}
.plan:hover{transform:translateY(-3px)}
.plan.pop{border:2px solid var(--brand)}
.plan .tag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--brand);color:#fff;font-size:11px;font-weight:700;border-radius:99px;padding:4px 12px;white-space:nowrap}
.plan h3{font-size:13px;color:var(--muted);font-weight:600;font-family:var(--font-body);text-transform:uppercase;letter-spacing:.05em}
.plan .price{font-family:var(--font-display);font-size:38px;font-weight:600;margin:8px 0 2px}
.plan .price span{font-size:14px;color:var(--muted);font-weight:500;font-family:var(--font-body)}
.plan ul{list-style:none;margin:18px 0 22px}
.plan ul li{font-size:14px;padding:7px 0;border-top:1px solid var(--line);color:#4a443a;display:flex;gap:8px}
.plan ul li b{color:var(--ink)}
.plan ul li::before{content:"•";color:var(--brand);font-weight:700}
.plan .btn{width:100%}
.referral{text-align:center;margin-top:26px;font-size:14.5px;color:var(--muted)}
.referral b{color:var(--success)}

/* FAQ */
.faq{max-width:720px}
.faq details{border:1px solid var(--line);border-radius:14px;background:var(--surface);padding:18px 20px;margin-bottom:12px;box-shadow:var(--shadow)}
.faq summary{cursor:pointer;font-weight:600;font-size:15.5px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";float:right;color:var(--brand);font-weight:700;font-size:18px}
.faq details[open] summary:after{content:"−"}
.faq details p{color:var(--muted);font-size:14.5px;margin-top:12px}

/* footer */
footer{border-top:1px solid var(--line);padding:36px 0;margin-top:44px}
.foot{display:flex;align-items:center;gap:16px;justify-content:space-between;flex-wrap:wrap}
.foot .brand{font-size:16px}
.foot .brand img{width:26px;height:26px}
.foot .meta{color:var(--muted);font-size:13.5px}
.foot a{color:var(--muted);font-size:13.5px;text-decoration:none}
.foot a:hover{color:var(--ink)}

/* scroll reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

@media(max-width:860px){
  .hero{padding-top:44px}
  .hero-inner{grid-template-columns:1fr}
  .hero h1{font-size:38px}
  .cmp,.plans{grid-template-columns:1fr}
  .nav .links{display:none}
  .dial .nodes{font-size:12px}
}

/* ---------- blog article ---------- */
.post{max-width:760px;margin:0 auto;padding:24px 24px 0}
.post .crumb{font-size:13px;color:var(--muted);margin-bottom:20px}
.post .crumb a{color:var(--brand-ink);text-decoration:none}
.post .crumb a:hover{text-decoration:underline}
.post h1{font-size:38px;line-height:1.12;margin-bottom:10px}
.post .meta{font-size:13.5px;color:var(--muted);margin-bottom:28px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.prose{font-size:16.5px;line-height:1.72;color:#2d2820}
.prose p{margin:0 0 18px}
.prose h2{font-size:26px;margin:38px 0 14px}
.prose h3{font-size:20px;margin:30px 0 12px}
.prose ul,.prose ol{margin:0 0 20px;padding-left:24px}
.prose li{margin-bottom:8px}
.prose blockquote{background:var(--paper-2);border-left:3px solid var(--brand);border-radius:0 12px 12px 0;padding:16px 20px;margin:0 0 20px;font-size:15px;color:#3a3429}
.prose blockquote p{margin:0 0 8px}
.prose blockquote p:last-child{margin:0}
.prose a{color:var(--brand-ink);text-decoration:underline;text-underline-offset:2px}
.prose a:hover{color:var(--brand)}
.prose code{background:var(--paper-2);border:1px solid var(--line);border-radius:5px;padding:1px 6px;font-size:.9em}
.prose strong{color:var(--ink)}
.prose em{color:#4a443a}
.post-cta{margin:36px 0 0;padding:26px 24px;background:var(--brand-soft);border:1px solid #bfe0dc;border-radius:16px;text-align:center}
.post-cta p{margin:0 0 14px;font-size:16px;color:#2d2820}
@media(max-width:860px){.post h1{font-size:29px}}

/* ---------- blog index ---------- */
.bloglist{display:grid;gap:14px;margin-top:6px}
.post-card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px 22px;text-decoration:none;box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.post-card:hover{transform:translateY(-2px);border-color:var(--brand)}
.post-card h2{font-size:20px;margin-bottom:6px;color:var(--ink)}
.post-card p{color:var(--muted);font-size:14.5px;margin:0;line-height:1.55}
.post-card .read{display:inline-block;margin-top:10px;font-size:13.5px;font-weight:600;color:var(--brand-ink)}

/* ---------- flexible plan (slider) ---------- */
.flexplan{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:30px 28px;box-shadow:var(--shadow);margin-top:22px;text-align:center;max-width:760px;margin-left:auto;margin-right:auto}
.flexplan-head h3{font-size:22px}
.flexplan-head p{color:var(--muted);margin-top:6px;font-size:15px}
.flex-count{font-family:var(--font-display);font-size:42px;font-weight:600;line-height:1;margin:20px 0 4px}
.flex-count .num{color:var(--brand)}
.flex-count .unit{font-size:16px;font-family:var(--font-body);color:var(--muted);font-weight:500}
#flexRange{-webkit-appearance:none;appearance:none;width:100%;max-width:520px;height:8px;border-radius:99px;background:linear-gradient(90deg,var(--brand),var(--amber) 60%,var(--terracotta));outline:none;margin:14px auto 6px;cursor:pointer}
#flexRange::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:26px;height:26px;border-radius:50%;background:#fff;border:3px solid var(--brand);cursor:grab;box-shadow:0 2px 8px rgba(33,29,23,.25)}
#flexRange::-moz-range-thumb{width:26px;height:26px;border-radius:50%;background:#fff;border:3px solid var(--brand);cursor:grab;box-shadow:0 2px 8px rgba(33,29,23,.25)}
.flex-scale{display:flex;justify-content:space-between;max-width:520px;margin:0 auto;font-size:12px;color:var(--muted)}
.flex-price{margin:16px 0 18px}
.flex-price .amount{font-family:var(--font-display);font-size:38px;font-weight:600}
.flex-price .per{font-size:14px;color:var(--muted);font-family:var(--font-body);font-weight:500}
.flex-price .save{color:var(--success);font-size:13.5px;margin-top:2px}
.flexplan .btn{min-width:240px}
.flex-more{margin-top:16px;font-size:13px;color:var(--muted)}
.flex-more a{color:var(--brand-ink);text-decoration:underline;text-underline-offset:2px}

/* ---------- real reminder examples ---------- */
.emails{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:6px}
.email{background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);overflow:hidden}
.email-head{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--paper-2)}
.email-head .day{font-family:var(--font-display);font-weight:700;color:var(--brand);font-size:13px;white-space:nowrap}
.email-head .subject{font-size:13.5px;font-weight:600;color:var(--ink)}
.email-body{padding:14px 16px;font-size:14px;color:#3a3429;line-height:1.6}
.email:nth-child(2) .day{color:var(--brand-ink)}
.email:nth-child(3) .day{color:var(--amber)}
.email:nth-child(4) .day{color:var(--terracotta)}
.legal{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.5}
@media(max-width:860px){.emails{grid-template-columns:1fr}}