/* ============================================================
   DECODING CREDIT CARDS — Design System v2
   Aesthetic: Indie documentary meets editorial zine
   Warm, human, slightly rough around the edges
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,500;9..144,700;9..144,900&family=Instrument+Sans:wght@400;500;600;700&family=Caveat:wght@400;500;700&family=Space+Mono:wght@400;700&display=swap');

:root {
  /* PALETTE — warm, not cold */
  --cream: #F7F3ED;
  --paper: #EDE8DF;
  --parchment: #E2DCD2;
  --ink: #1A1A18;
  --ink-soft: #2D2D28;
  --ink-muted: #5C5C54;
  --ink-faint: #9E9E93;
  --ink-ghost: #C4C0B6;

  --electric: #2563EB;       /* signal blue — the ONE accent */
  --electric-soft: rgba(37,99,235,0.12);
  --electric-glow: rgba(37,99,235,0.25);
  --electric-bright: #3B82F6;

  --danger: #DC2626;         /* for traps, debt, fraud */
  --danger-soft: rgba(220,38,38,0.08);

  --success: #16A34A;        /* for wins, completions */
  --success-soft: rgba(22,163,74,0.08);

  --warm: #EA580C;           /* warm accent for highlights */
  --warm-soft: rgba(234,88,12,0.08);

  --gold: #B45309;           /* for rewards, score */

  /* TYPOGRAPHY */
  --font-display: 'Fraunces', serif;
  --font-body: 'Instrument Sans', sans-serif;
  --font-hand: 'Caveat', cursive;
  --font-mono: 'Space Mono', monospace;

  /* SPACING */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 32px;
  --space-xl: 64px;
  --space-2xl: 128px;

  /* MOTION */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);

  /* BORDERS */
  --border: rgba(26,26,24,0.08);
  --border-strong: rgba(26,26,24,0.15);
  --border-ink: rgba(26,26,24,0.5);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  font-size: 16px;
}

body {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* PAPER TEXTURE (subtle) — sits BEHIND content via z-index:-1 so it never blocks taps */
body {
  isolation: isolate;
  position: relative;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: -1;
}

/* SCROLLBAR */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--cream); }
::-webkit-scrollbar-thumb { background: var(--ink-ghost); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-faint); }

/* SELECTION */
::selection {
  background: var(--electric);
  color: white;
}

/* CONTAINER */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}

.container--narrow {
  max-width: 720px;
}

.container--wide {
  max-width: 1300px;
}

/* NAVIGATION */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.4s var(--ease-smooth);
}

.site-nav.scrolled {
  background: rgba(247,243,237,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 8px rgba(0,0,0,0.03);
}

.nav-brand {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-brand span {
  color: var(--electric);
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-muted);
  text-decoration: none;
  transition: color 0.2s ease;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--ink);
}

.nav-links a.btn--primary {
  color: white;
}

.nav-links a.btn--primary:hover {
  color: white;
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--electric);
  border-radius: 1px;
}

/* HANDWRITTEN ANNOTATION */
.annotation {
  font-family: var(--font-hand);
  color: var(--electric);
  font-size: 20px;
  font-weight: 500;
  transform: rotate(-2deg);
  display: inline-block;
}

.annotation--danger {
  color: var(--danger);
}

.annotation--warm {
  color: var(--warm);
}

/* SECTION TITLES */
.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.section-title--lg { font-size: clamp(36px, 5vw, 64px); }
.section-title--md { font-size: clamp(28px, 3.5vw, 44px); }
.section-title--sm { font-size: clamp(22px, 2.5vw, 32px); }

/* INTERACTIVE CARD COMPONENT — the "stage" */
.stage {
  background: white;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.03);
  position: relative;
}

.stage-header {
  padding: 20px 28px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--paper);
}

.stage-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
}

.stage-step {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
}

.stage-body {
  padding: 32px;
}

/* BUTTON */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.25s var(--ease-spring);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--electric);
  color: white;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--electric-glow);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--outline {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--border-strong);
}

.btn--outline:hover {
  border-color: var(--electric);
  color: var(--electric);
}

.btn--ghost {
  background: transparent;
  color: var(--ink-muted);
  padding: 8px 16px;
}

.btn--ghost:hover {
  color: var(--ink);
  background: var(--paper);
}

.btn--danger {
  background: var(--danger);
  color: white;
}

.btn--lg {
  padding: 16px 32px;
  font-size: 16px;
}

/* TAG / PILL */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.03em;
}

.pill--default {
  background: var(--paper);
  color: var(--ink-muted);
}

.pill--electric {
  background: var(--electric-soft);
  color: var(--electric);
}

.pill--danger {
  background: var(--danger-soft);
  color: var(--danger);
}

.pill--success {
  background: var(--success-soft);
  color: var(--success);
}

/* CREDIT CARD VISUAL */
.cc-visual {
  width: 320px;
  height: 200px;
  border-radius: 16px;
  background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #1e293b 100%);
  color: white;
  padding: 24px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.15), 0 2px 8px rgba(0,0,0,0.1);
  font-family: var(--font-mono);
  cursor: pointer;
  transition: transform 0.4s var(--ease-spring), box-shadow 0.4s ease;
  user-select: none;
}

.cc-visual:hover {
  transform: translateY(-4px) rotateX(2deg);
  box-shadow: 0 16px 48px rgba(0,0,0,0.2), 0 4px 12px rgba(0,0,0,0.1);
}

.cc-visual::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.03) 50%, transparent 60%);
  animation: cc-shine 4s ease infinite;
}

@keyframes cc-shine {
  0%, 100% { transform: translateX(-100%) rotate(0); }
  50% { transform: translateX(100%) rotate(0); }
}

.cc-chip {
  width: 40px;
  height: 30px;
  background: linear-gradient(135deg, #d4a843 0%, #c9952e 50%, #e0bc5f 100%);
  border-radius: 6px;
  margin-bottom: 20px;
  position: relative;
}

.cc-chip::after {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px solid rgba(0,0,0,0.15);
  border-radius: 3px;
}

.cc-number {
  font-size: 16px;
  letter-spacing: 0.15em;
  margin-bottom: 16px;
  opacity: 0.9;
}

.cc-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.cc-name {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.7;
}

.cc-network {
  font-size: 18px;
  font-weight: 700;
  font-family: var(--font-body);
  opacity: 0.9;
}

.cc-contactless {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 24px;
  height: 24px;
  opacity: 0.5;
}

/* POS TERMINAL */
.pos-terminal {
  width: 200px;
  background: #2D2D28;
  border-radius: 16px 16px 8px 8px;
  padding: 16px;
  color: white;
  font-family: var(--font-mono);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  position: relative;
}

.pos-screen {
  background: #0a2e14;
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
  font-size: 11px;
  line-height: 1.6;
  color: #4ade80;
  min-height: 80px;
}

.pos-screen .amount {
  font-size: 24px;
  font-weight: 700;
  font-family: var(--font-display);
}

.pos-slot {
  height: 6px;
  background: #1a1a18;
  border-radius: 3px;
  margin: 8px auto;
  width: 60%;
  position: relative;
  overflow: hidden;
}

.pos-slot-glow {
  position: absolute;
  inset: 0;
  background: var(--electric);
  border-radius: 3px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s var(--ease-out);
}

.pos-slot-glow.active {
  transform: scaleX(1);
}

/* ANIMATED FLOW PATH */
.flow-path {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 32px 0;
}

.flow-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  position: relative;
  z-index: 2;
}

.flow-node-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: white;
  border: 2px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  transition: all 0.5s var(--ease-out);
  position: relative;
}

.flow-node-circle::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid transparent;
  transition: all 0.5s var(--ease-out);
}

.flow-node.active .flow-node-circle {
  border-color: var(--electric);
  background: var(--electric-soft);
  transform: scale(1.1);
}

.flow-node.active .flow-node-circle::after {
  border-color: var(--electric);
  animation: node-pulse 1.5s ease infinite;
}

.flow-node.done .flow-node-circle {
  border-color: var(--success);
  background: var(--success-soft);
}

@keyframes node-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0; }
}

.flow-node-name {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
}

.flow-node-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* CONNECTOR LINE */
.flow-connector {
  flex: 1;
  height: 2px;
  background: var(--parchment);
  position: relative;
  margin: 0 -8px;
  z-index: 1;
  margin-top: -28px;
}

.flow-connector-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0;
  background: var(--electric);
  transition: width 0.8s var(--ease-out);
  border-radius: 1px;
}

.flow-connector-fill.active {
  width: 100%;
}

/* MONEY PACKET ANIMATION */
.money-packet {
  position: absolute;
  top: -10px;
  left: 0;
  width: 22px;
  height: 22px;
  background: var(--electric);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: white;
  box-shadow: 0 2px 8px var(--electric-glow);
  opacity: 0;
  z-index: 3;
}

.money-packet.moving {
  opacity: 1;
  animation: packet-move 0.8s var(--ease-out) forwards;
}

@keyframes packet-move {
  0% { left: 0; }
  100% { left: calc(100% - 22px); }
}

.money-packet.return {
  background: var(--success);
  box-shadow: 0 2px 8px rgba(22,163,74,0.3);
}

.money-packet.return.moving {
  animation: packet-return 0.8s var(--ease-out) forwards;
}

@keyframes packet-return {
  0% { left: calc(100% - 22px); }
  100% { left: 0; }
}

/* INFO BUBBLE */
.info-bubble {
  background: white;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  max-width: 400px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
  opacity: 0;
  transform: translateY(8px);
  transition: all 0.4s var(--ease-out);
  position: relative;
}

.info-bubble.visible {
  opacity: 1;
  transform: translateY(0);
}

.info-bubble::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 32px;
  width: 16px;
  height: 16px;
  background: white;
  border: 1px solid var(--border-strong);
  border-right: none;
  border-bottom: none;
  transform: rotate(45deg);
}

.info-bubble-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.info-bubble-body {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-muted);
}

/* PROGRESS INDICATOR */
.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--parchment);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--electric);
  border-radius: 2px;
  transition: width 0.6s var(--ease-out);
}

/* COMPLETION BURST */
.completion-burst {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(247,243,237,0.95);
  z-index: 9000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

.completion-burst.active {
  opacity: 1;
  pointer-events: all;
}

.completion-inner {
  text-align: center;
  animation: completion-pop 0.6s var(--ease-spring);
}

@keyframes completion-pop {
  0% { transform: scale(0.8); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* CONFETTI */
.confetti-piece {
  position: fixed;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  z-index: 9001;
  pointer-events: none;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  /* TYPOGRAPHY — bump base + all utility text for mobile legibility */
  body { font-size: 16px; }
  
  /* Utility text (mono, labels, metadata, eyebrows) — never smaller than 14px on mobile */
  .chapter-meta,
  .chapter-eyebrow,
  .detail-eyebrow,
  .hero-eyebrow,
  .trust-label,
  .factor-rundown-item,
  .decision-status,
  .test-opt,
  .flip-btn,
  .why-num,
  [class*="-label"],
  [class*="-meta"],
  [class*="eyebrow"] {
    font-size: 14px !important;
  }

  /* LAYOUT */
  .container { padding: 0 16px; }
  .site-nav { padding: 12px 16px; }
  .nav-links { display: none; }
  
  /* VISUALS */
  .cc-visual { width: 260px; height: 165px; padding: 18px; }
  .pos-terminal { width: 160px; }
  .flow-node-circle { width: 48px; height: 48px; font-size: 20px; }
  
  /* INTERACTIVE — ensure all buttons/links have sufficient touch target (min 44px height) */
  button,
  .btn,
  a:not(.nav-brand),
  input[type="range"],
  [role="button"] {
    min-height: 44px;
    padding-top: 12px;
    padding-bottom: 12px;
  }
  
  /* Range sliders — bigger thumb on mobile */
  input[type="range"]::-webkit-slider-thumb {
    width: 24px;
    height: 24px;
  }
  input[type="range"]::-moz-range-thumb {
    width: 24px;
    height: 24px;
  }
}

/* ============================================================
   CUSTOM CURSOR — desktop only, hidden on touch / small screens
   A small electric dot tracks the actual cursor exactly,
   and a larger ring chases it smoothly. On interactive hover,
   the ring expands and shifts.
   ============================================================ */
.cursor-dot,
.cursor-trail {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 10000;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.cursor-dot {
  width: 6px;
  height: 6px;
  background: var(--electric);
  mix-blend-mode: normal;
}

.cursor-trail {
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--electric);
  background: transparent;
  transition: opacity 0.3s ease, width 0.25s var(--ease-spring), height 0.25s var(--ease-spring), border-color 0.25s ease, background 0.25s ease;
}

body.cursor-active .cursor-dot,
body.cursor-active .cursor-trail {
  opacity: 1;
}

/* On interactive elements, ring expands and goes warm */
body.cursor-hover .cursor-trail {
  width: 56px;
  height: 56px;
  border-color: var(--warm);
  background: rgba(234, 88, 12, 0.08);
}

body.cursor-hover .cursor-dot {
  background: var(--warm);
}

/* On click, ring squishes */
body.cursor-down .cursor-trail {
  width: 28px;
  height: 28px;
  border-width: 2px;
}

/* Hide on touch devices and mobile */
@media (hover: none), (pointer: coarse), (max-width: 768px) {
  .cursor-dot, .cursor-trail { display: none !important; }
  body { cursor: auto !important; }
}

/* On desktop, hide the system cursor */
@media (hover: hover) and (pointer: fine) {
  body.cursor-active { cursor: none; }
  body.cursor-active a,
  body.cursor-active button,
  body.cursor-active [onclick],
  body.cursor-active input,
  body.cursor-active select,
  body.cursor-active textarea,
  body.cursor-active [role="button"] { cursor: none; }
}