/* DuoGive — site styles. One family (Bricolage Grotesque), two greens, deep ink. */

:root {
  --ink: #0E2A20;
  --ink-2: #1B4034;
  --moss: #4E6B5E;
  --paper: #FFFFFF;
  --mint-paper: #EEF7F1;
  --line: #D6E5DC;
  --green: #178A5C;
  --green-deep: #0F6B46;
  --mint: #6FD3A5;
  --mint-soft: #B9EBD2;
  --focus: #178A5C;

  --font: "Bricolage Grotesque", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --wrap: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
  --r: 10px;

  /* type scale (Perfect fourth-ish, tightened at the top) */
  --t-1: clamp(2.5rem, 1.6rem + 4.2vw, 5rem);
  --t-2: clamp(1.9rem, 1.3rem + 2.4vw, 3.2rem);
  --t-3: clamp(1.4rem, 1.15rem + 1vw, 2rem);
  --t-4: 1.2rem;
  --t-body: 1.0625rem;
  --t-small: 0.9rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }

body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--t-body);
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  font-optical-sizing: auto;
}

h1, h2, h3, h4 { font-weight: 600; line-height: 1.08; letter-spacing: -0.02em; margin: 0 0 0.5em; text-wrap: balance; }
h1 { font-size: var(--t-1); font-weight: 700; letter-spacing: -0.035em; line-height: 1.0; }
h2 { font-size: var(--t-2); }
h3 { font-size: var(--t-3); letter-spacing: -0.015em; }
h4 { font-size: var(--t-4); }
p { margin: 0 0 1em; max-width: 64ch; }
a { color: var(--green-deep); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--ink); }
ul, ol { padding-left: 1.2em; }
li { margin-bottom: 0.35em; }
img, svg { display: block; max-width: 100%; }
strong { font-weight: 650; }
small, .small { font-size: var(--t-small); }
.muted { color: var(--moss); }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 4px; }
.skip { position: absolute; left: 8px; top: -60px; background: var(--ink); color: #fff; padding: 10px 14px; border-radius: 6px; z-index: 100; }
.skip:focus { top: 8px; }

.wrap { width: min(var(--wrap), 100% - 2 * var(--gutter)); margin-inline: auto; }

/* ---------- header ---------- */
.top { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.88); backdrop-filter: saturate(1.3) blur(10px); border-bottom: 1px solid var(--line); }
.top-row { display: flex; align-items: center; gap: 28px; min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand .word { font-weight: 700; font-size: 1.3rem; letter-spacing: -0.02em; }
.brand .word span { color: var(--green); }
.nav { display: flex; gap: 26px; margin-left: 10px; }
.nav a { text-decoration: none; color: var(--ink-2); font-weight: 500; padding: 6px 0; border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { border-bottom-color: var(--green); color: var(--ink); }
.top-cta { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.menu-btn { display: none; width: 44px; height: 44px; border: 0; background: none; padding: 10px; cursor: pointer; }
.menu-btn span { display: block; height: 2px; background: var(--ink); margin: 6px 0; transition: transform .2s; }
.menu-btn[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
.mobile-nav { display: none; }
.mobile-nav[hidden] { display: none; }

@media (max-width: 820px) {
  .nav, .top-cta .btn { display: none; }
  .menu-btn { display: block; }
  .mobile-nav:not([hidden]) { display: flex; flex-direction: column; border-top: 1px solid var(--line); padding: 8px var(--gutter) 16px; background: #fff; }
  .mobile-nav a { padding: 12px 0; text-decoration: none; color: var(--ink); font-weight: 500; font-size: 1.15rem; border-bottom: 1px solid var(--line); }
  .mobile-nav a:last-child { border: 0; color: var(--green-deep); }
}

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 20px; border-radius: 999px; font-weight: 600; text-decoration: none; border: 1.5px solid transparent; cursor: pointer; font-family: inherit; font-size: 1rem; line-height: 1; transition: background .15s, color .15s, border-color .15s; }
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-deep); color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: #fff; }
.btn-lg { padding: 16px 26px; font-size: 1.08rem; }
.on-dark .btn-ghost { color: #fff; border-color: rgba(255,255,255,.6); }
.on-dark .btn-ghost:hover { background: #fff; color: var(--ink); }
.on-dark .btn-primary { background: var(--mint); color: var(--ink); }
.on-dark .btn-primary:hover { background: #fff; }

/* ---------- sections ---------- */
.section { padding-block: clamp(56px, 8vw, 112px); }
.section-tight { padding-block: clamp(40px, 5vw, 72px); }
.band { background: var(--ink); color: #fff; }
.band h1, .band h2, .band h3 { color: #fff; }
.band p { color: rgba(255,255,255,.82); }
.band a { color: var(--mint); }
.band a:hover { color: #fff; }
.soft { background: var(--mint-paper); }
.lede { font-size: clamp(1.15rem, 1rem + .6vw, 1.4rem); line-height: 1.45; color: var(--ink-2); max-width: 56ch; }
.band .lede { color: rgba(255,255,255,.88); }

.grid-2 { display: grid; gap: clamp(28px, 5vw, 72px); grid-template-columns: 1fr 1fr; align-items: center; }
.grid-3 { display: grid; gap: clamp(24px, 3vw, 40px); grid-template-columns: repeat(3, 1fr); }
@media (max-width: 820px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }
.band .rule { border-color: rgba(255,255,255,.14); }

/* ---------- hero ---------- */
.hero { padding-block: clamp(48px, 7vw, 104px) clamp(40px, 6vw, 88px); }
.hero h1 { max-width: 14ch; }
.hero .lede { margin-top: 24px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-note { margin-top: 18px; color: var(--moss); font-size: var(--t-small); max-width: 40ch; }

/* The rings demo */
.rings { position: relative; }
.rings svg { width: 100%; height: auto; overflow: visible; }
.ring-a { stroke: var(--green); }
.ring-b { stroke: var(--mint); }
.ring-a, .ring-b { fill: none; stroke-width: 14; stroke-linecap: round; }
.lens { fill: var(--green-deep); opacity: .96; }
.rings-label { fill: #fff; font-weight: 700; text-anchor: middle; }
.rings-sub { fill: rgba(255,255,255,.85); text-anchor: middle; font-weight: 500; }
.ring-tag { font-weight: 600; fill: var(--ink-2); font-size: 15px; }
.ring-tag-amt { font-weight: 700; fill: var(--ink); font-size: 24px; letter-spacing: -0.02em; }

@keyframes draw { from { stroke-dashoffset: var(--len); } to { stroke-dashoffset: 0; } }
@keyframes lens-in { from { opacity: 0; transform: scale(.85); } to { opacity: .96; transform: scale(1); } }
.rings.animate .ring-a, .rings.animate .ring-b { --len: 1200; stroke-dasharray: var(--len); animation: draw 1.1s cubic-bezier(.6,.05,.2,1) both; }
.rings.animate .ring-b { animation-delay: .45s; }
.rings.animate .lens-group { transform-origin: 300px 200px; animation: lens-in .5s .95s ease-out both; }
.rings.animate .fade { opacity: 0; animation: fadein .5s 1.2s ease-out both; }
@keyframes fadein { to { opacity: 1; } }

.rings-controls { display: grid; grid-template-columns: 1fr auto; gap: 16px 20px; align-items: center; margin-top: 10px; padding: 16px 18px; background: var(--mint-paper); border-radius: var(--r); }
.rings-controls label { font-weight: 600; font-size: var(--t-small); display: flex; justify-content: space-between; gap: 12px; }
.rings-controls label output { color: var(--green-deep); font-variant-numeric: tabular-nums; }
.rings-controls input[type=range] { width: 100%; accent-color: var(--green); margin-top: 6px; }
.rings-controls .seg { display: inline-flex; border: 1.5px solid var(--line); border-radius: 999px; padding: 3px; background: #fff; }
.rings-controls .seg button { border: 0; background: none; padding: 7px 12px; border-radius: 999px; font: inherit; font-weight: 600; font-size: .9rem; color: var(--moss); cursor: pointer; }
.rings-controls .seg button[aria-pressed="true"] { background: var(--ink); color: #fff; }
.rings-controls .seg-wrap { display: flex; flex-direction: column; gap: 6px; font-size: var(--t-small); font-weight: 600; }
@media (max-width: 520px) { .rings-controls { grid-template-columns: 1fr; } }

/* ---------- steps (a real sequence) ---------- */
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 0; counter-reset: s; }
.step { display: grid; grid-template-columns: 56px 1fr; gap: 20px; padding: 28px 0; border-top: 1px solid rgba(255,255,255,.14); counter-increment: s; }
.step:last-child { border-bottom: 1px solid rgba(255,255,255,.14); }
.step::before { content: counter(s); font-weight: 700; font-size: 1.6rem; color: var(--mint); line-height: 1; padding-top: 2px; grid-row: 1 / span 2; }
.step h3, .step p { grid-column: 2; }
.step h3 { margin-bottom: 6px; }
.step p { margin: 0; }
@media (min-width: 821px) { .steps { grid-template-columns: repeat(3, 1fr); gap: 32px; } .step { grid-template-columns: 1fr; border-bottom: 0 !important; padding-top: 24px; } .step::before { margin-bottom: 14px; grid-row: auto; } .step h3, .step p { grid-column: 1; } }

/* ---------- feature lists (ruled, not carded) ---------- */
.features { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 clamp(28px, 4vw, 64px); }
.features li { padding: 22px 0; border-top: 1px solid var(--line); }
.features h3 { font-size: 1.2rem; margin-bottom: 6px; letter-spacing: -0.01em; }
.features p { margin: 0; color: var(--ink-2); }
@media (max-width: 720px) { .features { grid-template-columns: 1fr; } }

.spec { display: grid; grid-template-columns: 220px 1fr; gap: 10px 32px; padding: 18px 0; border-top: 1px solid var(--line); }
.spec:last-child { border-bottom: 1px solid var(--line); }
.spec dt { font-weight: 650; }
.spec dd { margin: 0; color: var(--ink-2); }
@media (max-width: 640px) { .spec { grid-template-columns: 1fr; gap: 4px; } }

/* The flow diagram (money path) */
.flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 12px; align-items: center; margin-top: 36px; }
.flow .node { padding: 18px 20px; border: 1.5px solid var(--line); border-radius: var(--r); background: #fff; }
.flow .node strong { display: block; font-size: 1.05rem; }
.flow .node span { color: var(--moss); font-size: var(--t-small); }
.flow .arrow { color: var(--green); font-size: 1.6rem; line-height: 1; }
.flow .node.match { border-color: var(--green); background: var(--mint-paper); }
@media (max-width: 760px) { .flow { grid-template-columns: 1fr; } .flow .arrow { transform: rotate(90deg); justify-self: center; } }

/* quote */
.quote { font-size: clamp(1.25rem, 1rem + 1vw, 1.7rem); line-height: 1.35; letter-spacing: -0.01em; max-width: 30ch; margin: 0; font-weight: 500; }
.quote footer { font-size: 1rem; margin-top: 16px; color: var(--moss); font-weight: 500; }

/* ---------- CTA band ---------- */
.cta { text-align: left; }
.cta h2 { max-width: 20ch; }
.cta .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }

/* ---------- prose pages ---------- */
.prose { max-width: 70ch; }
.prose h2 { font-size: var(--t-3); margin-top: 2em; }
.prose h3 { font-size: 1.15rem; margin-top: 1.6em; }
.page-head { padding-block: clamp(40px, 6vw, 80px) clamp(20px, 3vw, 40px); }
.page-head h1 { max-width: 18ch; }
.page-head .lede { margin-top: 18px; }

/* ---------- form ---------- */
.form { display: grid; gap: 18px; max-width: 620px; }
.form .row { display: grid; gap: 18px; grid-template-columns: 1fr 1fr; }
@media (max-width: 560px) { .form .row { grid-template-columns: 1fr; } }
.field label { display: block; font-weight: 600; margin-bottom: 6px; font-size: .95rem; }
.field input, .field select, .field textarea { width: 100%; font: inherit; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink); }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--green); outline: none; box-shadow: 0 0 0 3px rgba(23,138,92,.18); }
.field textarea { min-height: 120px; resize: vertical; }
.field .err { color: #B42318; font-size: var(--t-small); margin-top: 6px; display: none; }
.field.invalid input, .field.invalid select { border-color: #B42318; }
.field.invalid .err { display: block; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { padding: 16px 18px; border-radius: var(--r); display: none; }
.form-status.ok { display: block; background: var(--mint-paper); border: 1.5px solid var(--mint); }
.form-status.bad { display: block; background: #FEF3F2; border: 1.5px solid #FDA29B; color: #7A271A; }
.aside-list { list-style: none; padding: 0; margin: 0; }
.aside-list li { padding: 14px 0; border-top: 1px solid var(--line); }
.aside-list li:last-child { border-bottom: 1px solid var(--line); }
.aside-list strong { display: block; }

/* 404 */
.notfound { min-height: 50vh; display: grid; align-content: center; }

/* ---------- footer ---------- */
.foot { background: var(--ink); color: rgba(255,255,255,.8); padding-block: 56px 28px; border-top: 1px solid rgba(255,255,255,.08); }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; }
.foot h2 { font-size: 1rem; color: #fff; margin-bottom: 12px; }
.foot a { display: block; color: rgba(255,255,255,.8); text-decoration: none; padding: 5px 0; }
.foot a:hover { color: var(--mint); }
.foot-brand p { margin-top: 14px; max-width: 36ch; font-size: var(--t-small); }
.foot-base { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-top: 44px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12); font-size: var(--t-small); color: rgba(255,255,255,.6); }
.foot-base a { display: inline; padding: 0; color: rgba(255,255,255,.8); text-decoration: underline; }
@media (max-width: 720px) { .foot-grid { grid-template-columns: 1fr; gap: 28px; } }