/* ===========================================================
   FlipSwipe — design tokens
   =========================================================== */
:root{
  --paper: #F5F7F4;
  --paper-raised: #FFFFFF;
  --paper-sunk: #EDF1EB;
  --ink: #0E1710;
  --ink-2: #16211A;
  --ink-soft: #46564C;
  --ink-border: #DFE6DC;

  --accent: #10C285;
  --accent-deep: #0A8F62;
  --accent-tint: #E4F8EF;

  --amber: #E8A23D;
  --amber-tint: #FBF0DD;
  --red: #E1524B;
  --red-tint: #FBE7E5;

  --on-ink: #F5F7F4;
  --on-ink-soft: #A9B6AC;
  --on-ink-border: rgba(245,247,244,0.12);
  --on-ink-raised: #1B271F;

  --font-display: 'Bricolage Grotesque', ui-sans-serif, system-ui, sans-serif;
  --font-body: 'Manrope', ui-sans-serif, system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  --shadow-card: 0 1px 2px rgba(14,23,16,0.04), 0 24px 48px -16px rgba(14,23,16,0.28);
  --shadow-card-2: 0 12px 24px -12px rgba(14,23,16,0.18);
  --shadow-btn: 0 8px 20px -6px rgba(16,194,133,0.45);
  --shadow-pop: 0 6px 16px -4px rgba(14,23,16,0.16);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;

  --section-pad: clamp(4.5rem, 9vw, 7.5rem);
  --wrap-w: 1140px;
}

@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===========================================================
   Reset
   =========================================================== */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg{ display: block; max-width: 100%; }
button{ font: inherit; color: inherit; }
a{ color: inherit; }
ol, ul{ margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p{ margin: 0; }

.sr-only{
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link{
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--ink); color: var(--on-ink); padding: 12px 18px;
  border-radius: 0 0 var(--radius-sm) 0; font-weight: 700;
}
.skip-link:focus{ left: 0; }

.top-strip{ text-align: center; padding: 7px 12px; background: var(--ink); color: var(--paper-raised); font-family: var(--font-body); font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; opacity: 0.82; }

:focus-visible{
  outline: 2.5px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap{
  max-width: var(--wrap-w);
  margin: 0 auto;
  padding-left: clamp(1.25rem, 4vw, 2.5rem);
  padding-right: clamp(1.25rem, 4vw, 2.5rem);
}

/* ===========================================================
   Type
   =========================================================== */
h1, h2, h3{
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.on-ink{ color: var(--on-ink); }

.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 1rem;
}
.eyebrow::before{
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}
.text-accent{ color: var(--accent); }

.section-sub{
  font-size: clamp(1.0625rem, 0.4vw + 1rem, 1.25rem);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 44ch;
  margin-top: 1rem;
}
.on-ink-sub{ color: var(--on-ink-soft); }

/* ===========================================================
   Buttons
   =========================================================== */
.btn{
  --btn-fg: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 52px;
  padding: 0 1.75rem;
  border: none;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 220ms var(--ease-out), box-shadow 220ms var(--ease-out), background-color 220ms var(--ease-out);
  -webkit-tap-highlight-color: transparent;
}
.btn:active{ transform: scale(0.97); }

.btn-primary{
  background: var(--accent);
  color: #06251A;
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover{
  background: #17D492;
  box-shadow: 0 10px 26px -6px rgba(16,194,133,0.55);
  transform: translateY(-1px);
}
.btn-large{ min-height: 60px; padding: 0 2.25rem; font-size: 1.0625rem; }

.btn-ghost{
  background: transparent;
  border: 1.5px solid var(--ink-border);
  color: var(--ink);
}
.btn-ghost:hover{ border-color: var(--ink); background: var(--paper-sunk); }

.btn-small{ min-height: 40px; padding: 0 1.25rem; font-size: 0.9rem; }

/* ===========================================================
   Header
   =========================================================== */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245,247,244,0.7);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color 240ms var(--ease-out), background-color 240ms var(--ease-out);
}
.site-header.is-scrolled{
  border-bottom-color: var(--ink-border);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.wordmark{
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--ink);
}
.wordmark svg{ flex: none; }

/* ===========================================================
   Hero
   =========================================================== */
.hero{
  position: relative;
  padding-top: clamp(3.5rem, 7vw, 6rem);
  padding-bottom: clamp(6rem, 11vw, 9rem);
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 82% 0%, var(--accent-tint) 0%, rgba(228,248,239,0) 60%),
    var(--paper);
}
.hero-inner{ max-width: 640px; position: relative; z-index: 2; }
.hero h1{
  font-size: clamp(2.6rem, 3.4vw + 1.6rem, 4.5rem);
  line-height: 1.03;
}
.hero-sub{
  margin-top: 1.5rem;
  font-size: clamp(1.0625rem, 0.5vw + 1rem, 1.25rem);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 46ch;
}

.signup-form{ margin-top: 2.25rem; }
.signup-row{
  display: flex;
  gap: 10px;
  max-width: 460px;
}
.signup-input{
  flex: 1 1 auto;
  min-width: 0;
  min-height: 52px;
  padding: 0 1.1rem;
  border-radius: 999px;
  border: 1.5px solid var(--ink-border);
  background: var(--paper-raised);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  transition: border-color 180ms var(--ease-out), box-shadow 180ms var(--ease-out);
}
.signup-input::placeholder{ color: #9AA79E; }
.signup-input:hover{ border-color: #C7D1C3; }
.signup-input:focus{
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-tint);
}
.signup-input.is-invalid{ border-color: var(--red); box-shadow: 0 0 0 4px var(--red-tint); }

.signup-hint{
  margin-top: 0.85rem;
  font-size: 0.875rem;
  color: #7C8B80;
}

.signup-success:not([hidden]){
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 2.25rem;
  padding: 0.9rem 1.3rem;
  border-radius: 999px;
  background: var(--accent-tint);
  color: #0A4B33;
  font-weight: 700;
  font-size: 0.95rem;
}

/* Decorative peek of the card stack, bridges hero -> demo */
.hero-peek{
  position: absolute;
  right: clamp(-40px, 4vw, 60px);
  bottom: -60px;
  width: 300px;
  height: 260px;
  z-index: 1;
  display: none;
}
.peek-card{
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: var(--paper-raised);
  border: 1px solid var(--ink-border);
}
.peek-card--1{ transform: rotate(-6deg) translateY(0); box-shadow: var(--shadow-card-2); }
.peek-card--2{ transform: rotate(2deg) translateY(14px); opacity: 0.85; }
.peek-card--3{ transform: rotate(8deg) translateY(30px); opacity: 0.6; }

@media (min-width: 980px){
  .hero-peek{ display: block; }
}

/* ===========================================================
   Demo section
   =========================================================== */
.demo{
  padding-top: var(--section-pad);
  padding-bottom: var(--section-pad);
  background: var(--paper);
  border-top: 1px solid var(--ink-border);
}
.demo-intro{ max-width: 640px; text-align: left; }
.demo h2{ font-size: clamp(2rem, 2vw + 1.4rem, 2.75rem); }

.demo-stage{
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ---- card deck ---- */
.card-deck{
  position: relative;
  width: min(380px, 100%);
  height: 560px;
  touch-action: pan-y;
}

.deal-card{
  position: absolute;
  inset: 0;
  background: var(--paper-raised);
  border-radius: var(--radius-lg);
  border: 1px solid var(--ink-border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  user-select: none;
  will-change: transform, opacity;
  transition: transform 480ms var(--ease-spring), opacity 380ms var(--ease-out), box-shadow 300ms var(--ease-out);
}
.deal-card[data-depth="0"]{ z-index: 3; box-shadow: var(--shadow-card); cursor: grab; transform: rotate(-4deg); }
.deal-card[data-depth="0"].is-dragging{ cursor: grabbing; transition: box-shadow 200ms var(--ease-out); }
.deal-card[data-depth="1"]{ z-index: 2; box-shadow: var(--shadow-card-2); transform: rotate(-2deg) translateY(8px); }
.deal-card[data-depth="2"]{ z-index: 1; box-shadow: none; transform: rotate(3deg) translateY(16px); }

.card-photo{
  position: relative;
  height: 168px;
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.card-photo--drill{ background: linear-gradient(135deg, #4E88A2 0%, #1C3A4F 100%); }
.card-photo--shelf{ background: linear-gradient(135deg, #CD9257 0%, #6E4326 100%); }
.card-photo--controller{ background: linear-gradient(135deg, #7368B0 0%, #362B5C 100%); }
.card-photo--jeans{ background: linear-gradient(135deg, #BE6183 0%, #5A2842 100%); }

.card-icon-badge{
  width: 84px;
  height: 84px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.32);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  box-shadow: 0 10px 26px -10px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.28);
}
.card-icon-badge svg{ width: 38px; height: 38px; }

.badge{
  position: absolute;
  top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 11px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  backdrop-filter: blur(6px);
}
.badge-time{
  left: 12px;
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.28);
  color: #fff;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.badge-time svg{ width: 13px; height: 13px; flex: none; }
.card-body{
  flex: 1 1 auto;
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.card-title-row{
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.card-title{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
}
.card-source{
  margin-top: 3px;
  font-size: 0.8125rem;
  color: var(--ink-soft);
}

.flip-score{
  flex: none;
  width: 46px; height: 46px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1;
  border: 2.5px solid;
}
.flip-score span{ font-size: 0.5rem; font-weight: 600; margin-top: 1px; letter-spacing: 0.02em; font-family: var(--font-body); }
.flip-score--good{ color: var(--accent-deep); border-color: var(--accent); background: var(--accent-tint); }
.flip-score--mid{ color: #8A5D18; border-color: var(--amber); background: var(--amber-tint); }
.flip-score--bad{ color: #9A2E29; border-color: var(--red); background: var(--red-tint); }

.card-stats{
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--ink-border);
  font-family: var(--font-mono);
}
.stat-row{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font-size: 0.875rem;
  padding: 3px 0;
}
.stat-label{ font-family: var(--font-body); color: var(--ink-soft); font-weight: 600; font-size: 0.8125rem; }
.stat-value{ font-variant-numeric: tabular-nums; font-weight: 600; }
.stat-row--fees .stat-value{ color: var(--red); }

.card-profit{
  margin-top: 10px;
  padding-top: 12px;
  border-top: 1.5px solid var(--ink-border);
}
.profit-figure{
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 4vw, 1.9rem);
  color: var(--accent-deep);
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
}
.profit-caption{
  font-size: 0.75rem;
  color: var(--ink-soft);
  margin-top: 2px;
}

.card-comps{
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--ink-soft);
}

.card-actions{
  margin-top: auto;
  padding-top: 14px;
  display: flex;
  gap: 8px;
}
.msg-btn{
  flex: 1.3;
  min-height: 44px;
  border-radius: 999px;
  border: 1.5px solid var(--accent);
  background: transparent;
  color: var(--accent-deep);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background-color 180ms var(--ease-out), transform 180ms var(--ease-out);
}
.msg-btn:hover{ background: var(--accent-tint); }
.msg-btn:active{ transform: scale(0.98); }

.ebay-btn{
  flex: 1;
  min-height: 44px;
  padding: 0 0.5rem;
  border-radius: 999px;
  border: 1.5px solid var(--ink-border);
  background: transparent;
  color: var(--ink-soft);
  font-weight: 700;
  font-size: 0.8rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: background-color 180ms var(--ease-out), border-color 180ms var(--ease-out), transform 180ms var(--ease-out);
}
.ebay-btn svg{ width: 13px; height: 13px; flex: none; }
.ebay-btn:hover{ background: var(--paper-sunk); border-color: #C7D1C3; }
.ebay-btn:active{ transform: scale(0.98); }

/* swipe stamps */
.swipe-stamp{
  position: absolute;
  top: 26px;
  padding: 7px 14px;
  border: 3px solid;
  border-radius: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  opacity: 0;
  pointer-events: none;
}
.stamp-save{ left: 20px; color: var(--accent-deep); border-color: var(--accent); transform: rotate(-10deg); }
.stamp-skip{ right: 20px; color: var(--red); border-color: var(--red); transform: rotate(10deg); }

/* deck controls */
.deck-controls{
  margin-top: 2.25rem;
  display: flex;
  align-items: center;
  gap: 22px;
}
.deck-btn{
  width: 60px; height: 60px;
  border-radius: 50%;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background: var(--paper-raised);
  box-shadow: var(--shadow-pop);
  transition: transform 180ms var(--ease-spring), box-shadow 180ms var(--ease-out);
}
.deck-btn:hover{ transform: translateY(-3px) scale(1.04); box-shadow: 0 14px 26px -8px rgba(14,23,16,0.24); }
.deck-btn:active{ transform: scale(0.94); }
.deck-btn--skip{ color: var(--red); }
.deck-btn--save{ color: var(--accent-deep); background: var(--accent-tint); }

.deck-status{
  margin-top: 1.1rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--ink-soft);
  min-height: 1.4em;
}

/* ===========================================================
   How it works
   =========================================================== */
.how{
  padding-top: var(--section-pad);
  padding-bottom: var(--section-pad);
  background:
    radial-gradient(1px 1px at 20px 20px, rgba(245,247,244,0.06) 1px, transparent 0) 0 0/28px 28px,
    var(--ink);
  color: var(--on-ink);
}
.how h2{ font-size: clamp(2rem, 2.2vw + 1.3rem, 3rem); max-width: 16ch; }

.steps{
  margin-top: clamp(2.5rem, 5vw, 4rem);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
}
.step{
  position: relative;
  padding-top: 1.5rem;
  border-top: 1.5px solid var(--on-ink-border);
}
.step-icon{
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--on-ink-raised);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.1rem;
}
.step-index{
  position: absolute;
  top: 1.5rem;
  right: 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--on-ink-soft);
  font-weight: 600;
}
.step h3{
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.6rem;
}
.step p{
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--on-ink-soft);
  max-width: 32ch;
}

/* ===========================================================
   Quick-ask (inline pricing + location, right after signup)
   =========================================================== */
.quick-ask{
  margin-top: 2.25rem;
  max-width: 460px;
}
.quick-q{
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 1rem;
}
.quick-options{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip-btn{
  min-height: 46px;
  padding: 0 1.25rem;
  border-radius: 999px;
  border: 1.5px solid var(--ink-border);
  background: var(--paper-raised);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform 180ms var(--ease-out), border-color 180ms var(--ease-out), background-color 180ms var(--ease-out), box-shadow 180ms var(--ease-out);
}
.chip-btn:hover{ border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow-pop); }
.chip-btn:active{ transform: scale(0.96); }
.chip-btn.is-picked{
  background: var(--accent);
  border-color: var(--accent);
  color: #06251A;
}

/* ===========================================================
   Closing CTA
   =========================================================== */
.closing{
  padding-top: var(--section-pad);
  padding-bottom: var(--section-pad);
  background: var(--ink);
  text-align: center;
}
.closing-inner{ max-width: 560px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; }
.closing h2{ font-size: clamp(2rem, 2.4vw + 1.3rem, 2.9rem); }
.closing .section-sub{ text-align: center; max-width: 40ch; }
.closing .btn{ margin-top: 2.25rem; }

/* ===========================================================
   Footer
   =========================================================== */
.site-footer{
  background: var(--ink);
  border-top: 1px solid var(--on-ink-border);
  padding: 3rem 0;
}
.footer-inner{
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  text-align: center;
}
.wordmark-footer{ color: var(--on-ink); }
.footer-fine{ color: var(--on-ink-soft); font-size: 0.8125rem; margin-top: 0.4rem; }
.footer-copy{ color: var(--on-ink-soft); font-size: 0.8125rem; opacity: 0.7; margin-top: 0.4rem; }

/* ===========================================================
   Toast (message seller mock)
   =========================================================== */
.toast{
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translate(-50%, 12px);
  background: var(--ink);
  color: var(--on-ink);
  padding: 0.9rem 1.3rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 16px 32px -8px rgba(0,0,0,0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms var(--ease-out), transform 220ms var(--ease-out);
  z-index: 300;
  max-width: min(90vw, 360px);
  text-align: center;
}
.toast.is-visible{
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ===========================================================
   Scroll reveal
   =========================================================== */
.reveal{
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 640ms var(--ease-out), transform 640ms var(--ease-out);
}
.reveal.is-visible{ opacity: 1; transform: translateY(0); }

/* ===========================================================
   Responsive
   =========================================================== */
@media (max-width: 900px){
  .steps{ grid-template-columns: 1fr; gap: 2.25rem; }
}

@media (max-width: 640px){
  .header-inner{ height: 64px; }
  .hero{ padding-bottom: 4rem; }
  .signup-row{ flex-direction: column; max-width: none; }
  .signup-row .btn{ width: 100%; }
  .card-deck{ height: 540px; width: 100%; max-width: 360px; }
  .deck-controls{ gap: 28px; }
  .closing .btn{ width: 100%; }
}

@media (max-width: 380px){
  .card-deck{ height: 520px; }
  .card-photo{ height: 140px; }
}