/* =====================================================================
   case-study.css
   ---------------------------------------------------------------------
   Styles for the "Accepting Recs" case study page (case-study.html).
   This file extends styles.css (the main portfolio stylesheet).

   Contents:
     1. Monzo design tokens (pulled from the Figma file)
     2. Page wrapper + scroll progress bar
     3. Hero: title, meta grid, and phone stage
     4. iPhone 17 frame (used in hero + compare slider)
     5. The cluttered "before" phone content used in the hero
     6. Monzo recommendation screen (.rec-*) — used in hero "after"
        phone and in both panes of the before/after slider
     7. Sticky rail + main content column
     8. Section blocks: quotes, pain, stats, principles, steps
     9. Before/after compare slider
    10. Impact cards, big quote, reflection, credits
    11. Responsive adjustments
   ===================================================================== */


/* ---------------------------------------------------------------------
   1. Monzo design tokens — copied from the Accepting Recs Figma file
   --------------------------------------------------------------------- */
:root {
  --monzo-bg:          #f2f8f3;
  --monzo-surface:     #ffffff;
  --monzo-ink:         #091723;
  --monzo-ink-soft:    rgba(9, 23, 35, 0.6);
  --monzo-separator:   rgba(9, 23, 35, 0.12);
  --monzo-teal:        #218fb7;
  --monzo-teal-soft:   rgba(33, 143, 183, 0.14);
  --monzo-radius-box:  24px;

  /* Monzo Sans is private (see styles.css for @font-face declarations);
     fall back to DM Sans if the font files are missing. */
  --font-monzo: "Monzo Sans Text", "DM Sans", system-ui, sans-serif;
}


/* ---------------------------------------------------------------------
   2. Page wrapper + scroll progress bar
   --------------------------------------------------------------------- */
.case-page {
  max-width: 1280px;
}

.progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 9998;
}
.progress-bar {
  width: 0%;
  height: 100%;
  background: var(--accent);
  transition: width 80ms linear;
}


/* ---------------------------------------------------------------------
   3. Hero: kicker, title, meta grid, phone stage
   --------------------------------------------------------------------- */
.cs-hero {
  padding: 56px 0 120px;
  position: relative;
  border-top: none;
}
.cs-kicker {
  display: inline-block;
  margin-bottom: 32px;
}
.cs-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(44px, 6.2vw, 84px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 56px;
  max-width: 20ch;
}
.cs-accent {
  color: var(--accent);
  font-style: italic;
}

.cs-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
  padding: 32px 0;
  margin: 0 0 80px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.cs-meta > div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.cs-meta dt {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--ink-muted);
}
.cs-meta dd {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.3;
  color: var(--ink);
}

/* The stage holds two floating phones + a soft lavender glow behind them. */
.cs-hero-stage {
  position: relative;
  height: 640px;
  margin: 0 -32px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
}
.cs-stage-glow {
  position: absolute;
  width: 640px;
  height: 420px;
  background: radial-gradient(
    60% 60% at 50% 50%,
    rgba(var(--accent-rgb), .18) 0%,
    rgba(var(--accent-rgb), 0) 70%
  );
  filter: blur(8px);
  z-index: 0;
}


/* ---------------------------------------------------------------------
   4. iPhone 17 frame
   Physical screen is 402×874pt (ratio 19.58:9), 55pt device corner.
   We scale to 280×608 here and use a Dynamic Island instead of a notch.
   --------------------------------------------------------------------- */
.phone {
  width: 280px;
  height: 608px;
  padding: 8px;
  background: #0d0d0d;
  border-radius: 38px;
  position: relative;
  z-index: 1;
  box-shadow:
    0 40px 80px -30px rgba(26, 26, 26, 0.35),
    0 16px 40px -20px rgba(26, 26, 26, 0.25),
    inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}
.phone-notch {                 /* Dynamic Island */
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: 84px;
  height: 26px;
  background: #0d0d0d;
  border-radius: 14px;
  z-index: 3;
}
.phone-screen {
  width: 100%;
  height: 100%;
  padding: 48px 14px 14px;     /* top padding leaves room for the island */
  background: var(--bg);
  border-radius: 30px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Variant: hero phones are absolutely positioned and tilt slightly.   */
.phone-float {
  position: absolute;
  transition: transform 700ms cubic-bezier(0.2, 0.8, 0.2, 1);
}
.phone-before {
  left: calc(50% - 240px);
  transform: translateY(16px) rotate(-6deg);
  opacity: 0.88;
}
.phone-after {
  left: calc(50% - 40px);
  transform: translateY(-16px) rotate(4deg);
  z-index: 2;
}

/* Variant: phones used inside the compare slider sit upright, centered. */
.phone-compare {
  position: relative;
  flex-shrink: 0;
  margin: 0 auto;
}
.phone-compare > .rec-screen {
  width: 100%;
  height: 100%;
  max-height: none;
  border-radius: 30px;
  box-shadow: none;
}
.phone-compare > .rec-screen .rec-top {
  padding-top: 32px;           /* clear the Dynamic Island */
}


/* ---------------------------------------------------------------------
   5. Hero "before" phone — a deliberately cluttered screen showing
   the old version of the flow. Only used on the left-tilted phone.
   --------------------------------------------------------------------- */
.phone-screen-busy {
  padding: 40px 10px 10px;
  gap: 6px;
}
.ph-banner {
  background: #1a1a1a;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 10px;
  text-align: center;
  padding: 6px 8px;
  border-radius: 8px;
}
.ph-balance-busy {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 24px;
  padding: 4px 4px 0;
  color: var(--ink);
}
.ph-row-busy {
  font-family: var(--font-display);
  font-size: 11px;
  padding: 3px 4px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}
.ph-card {
  background: #ffe4d8;
  color: #9a3d1f;
  font-family: var(--font-display);
  font-size: 11px;
  padding: 8px 10px;
  border-radius: 10px;
}
.ph-card-promo {
  border: 1px dashed #d88a6b;
}
.ph-card-small {
  font-size: 10px;
}


/* ---------------------------------------------------------------------
   6. Monzo recommendation screen (.rec-*)
   Rebuilt 1:1 from the Figma node "Mortgage recommendation - multiple
   options" (node 2346:61084). Used in:
     - The hero "after" phone (compact variant, trimmed content)
     - Both panes of the before/after slider (full scrollable variant)
   --------------------------------------------------------------------- */

/* When used inside a hero phone, the .phone-screen wrapper already
   provides the rounded background — strip the outer box styling.     */
.phone-screen-monzo {
  background: var(--monzo-bg) !important;
  padding: 34px 0 0 !important;
  gap: 0 !important;
  color: var(--monzo-ink);
  font-family: var(--font-monzo);
}

/* Standalone screen — used inside the compare slider phones. */
.rec-screen {
  width: 320px;
  max-width: 90%;
  max-height: 560px;
  padding: 0;
  background: var(--monzo-bg);
  border-radius: 34px;
  color: var(--monzo-ink);
  font-family: var(--font-monzo);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow:
    0 24px 60px -30px rgba(9, 23, 35, 0.35),
    0 0 0 1px var(--monzo-separator);
}

/* --- Top toolbar: back chevron, title, chat button --- */
.rec-top {
  flex-shrink: 0;
  display: grid;
  grid-template-columns: 44px 1fr 56px;
  align-items: center;
  padding: 10px 12px;
}
.rec-chev {
  all: unset;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--monzo-surface);
  display: grid;
  place-items: center;
  font-size: 20px;
  line-height: 1;
  color: var(--monzo-ink);
  cursor: pointer;
  padding-bottom: 3px;
}
.rec-title {
  text-align: center;
  font-weight: 500;
  font-size: 15px;
}
.rec-chat {
  all: unset;
  justify-self: end;
  background: var(--monzo-surface);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--monzo-ink);
}

/* --- Scrollable content area --- */
.rec-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 0 16px 8px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  scrollbar-width: thin;
}
.rec-scroll::-webkit-scrollbar { width: 4px; }
.rec-scroll::-webkit-scrollbar-thumb {
  background: var(--monzo-separator);
  border-radius: 4px;
}

/* --- Hero: logo + headline + fixed-term subtitle --- */
.rec-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 20px 0 4px;
}
.rec-logo {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid var(--monzo-separator);
  overflow: hidden;
}
.rec-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.rec-headline {
  margin-top: 8px;
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.2px;
}
.rec-sub {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--monzo-ink-soft);
}
.rec-info {                    /* Small teal "i" circle */
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--monzo-teal);
  color: #fff;
  display: inline-grid;
  place-items: center;
  font-family: Georgia, serif;
  font-style: italic;
  font-size: 10px;
  line-height: 1;
}

/* --- "Why is this best?" info card --- */
.rec-card {
  background: var(--monzo-surface);
  border-radius: var(--monzo-radius-box);
  padding: 14px 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.rec-card-head {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 12px;
  align-items: center;
  padding: 6px 0;
  font-size: 14px;
  font-weight: 500;
}
.rec-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #d8e6d8;
  overflow: hidden;
}
.rec-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.rec-card p {
  margin: 0;
  max-width: none;
  font-size: 13px;
  line-height: 1.45;
  color: var(--monzo-ink-soft);
}
.rec-link {
  padding-top: 2px;
  font-size: 13px;
  color: var(--monzo-teal);
  cursor: pointer;
}

/* --- Table-style section (Summary / Total cost / After this deal…) --- */
.rec-section {
  background: var(--monzo-surface);
  border-radius: var(--monzo-radius-box);
  overflow: hidden;
}
.rec-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  font-weight: 600;
  font-size: 13px;
}
.rec-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  padding: 10px 16px;
  font-size: 13px;
  border-top: 1px solid var(--monzo-separator);
}
.rec-val {
  color: var(--monzo-ink-soft);
  text-align: right;
}

.rec-footnote {
  margin: 0;
  max-width: none !important;
  padding: 0 4px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--monzo-ink-soft);
}

/* --- Docked footer with primary/tinted buttons --- */
.rec-footer {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 16px 20px;
  background: var(--monzo-bg);
  border-top: 1px solid var(--monzo-separator);
}
.rec-btn {
  all: unset;
  text-align: center;
  padding: 14px 0;
  border-radius: 999px;
  font-family: var(--font-monzo);
  font-weight: 500;
  font-size: 14px;
  cursor: pointer;
}
.rec-btn-primary {
  background: var(--monzo-teal);
  color: #fff;
}
.rec-btn-tinted {
  background: var(--monzo-teal-soft);
  color: var(--monzo-teal);
}

/* --- Compact overrides for the hero phone (less space available) --- */
.phone-screen-monzo .rec-top           { padding: 4px 8px 6px; }
.phone-screen-monzo .rec-top .rec-title{ font-size: 13px; }
.phone-screen-monzo .rec-hero          { padding: 12px 0 4px; }
.phone-screen-monzo .rec-logo          { width: 54px; height: 54px; border-radius: 16px; }
.phone-screen-monzo .rec-headline      { font-size: 15px; margin-top: 4px; }
.phone-screen-monzo .rec-sub           { font-size: 11px; }
.phone-screen-monzo > .rec-card,
.phone-screen-monzo > .rec-section     { margin: 6px 10px 0; }
.phone-screen-monzo > .rec-card        { padding: 10px 12px; }
.phone-screen-monzo > .rec-card p      { font-size: 11px; }
.phone-screen-monzo .rec-card-head     { font-size: 12px; }
.phone-screen-monzo .rec-section-head  { font-size: 12px; padding: 10px 12px; }
.phone-screen-monzo .rec-row           { font-size: 11px; padding: 8px 12px; }
.phone-screen-monzo > .rec-footer      { padding: 8px 10px 12px; margin-top: auto; }
.phone-screen-monzo .rec-btn           { padding: 10px 0; font-size: 12px; }


/* ---------------------------------------------------------------------
   6b. UI header explorations (Monzo case study)
   A 2×2 grid of small "screenshot cards" showing four alternative
   header treatments. Each card uses its own `.rec-exp-*` modifier.
   --------------------------------------------------------------------- */
.rec-exp-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.rec-exp {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Each card mimics a phone screen — rounded corners, stacked content */
.rec-exp-card {
  position: relative;
  height: 320px;
  background: var(--monzo-bg);
  border-radius: 18px;
  padding: 12px 10px 14px;
  overflow: hidden;
  font-family: var(--font-monzo);
  color: var(--monzo-ink);
  box-shadow: 0 14px 30px -18px rgba(9, 23, 35, 0.3),
              0 0 0 1px var(--monzo-separator);
}

/* Fake toolbar — back + title + chat */
.rec-exp-toolbar {
  display: grid;
  grid-template-columns: 28px 1fr 44px;
  align-items: center;
  padding: 4px 4px 10px;
  font-size: 12px;
  font-weight: 500;
}
.rec-exp-chev {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  background: var(--monzo-surface);
  border-radius: 50%;
  font-size: 14px; line-height: 1;
  padding-bottom: 2px;
}
.rec-exp-title { text-align: center; }
.rec-exp-chat {
  justify-self: end;
  padding: 3px 8px;
  background: var(--monzo-surface);
  border-radius: 999px;
  font-size: 11px;
}

.rec-exp-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 14px 0 10px;
}
.rec-exp-logo {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: #ec1c24;
  color: #fff;
  display: grid; place-items: center;
  font-weight: 700;
  font-size: 22px;
  border: 1px solid var(--monzo-separator);
}
.rec-exp-head {
  margin-top: 4px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.2px;
}
.rec-exp-sub {
  font-size: 11px;
  color: var(--monzo-ink-soft);
}

/* Hint rows — faint rectangles suggesting the content below the fold */
.rec-exp-hint {
  margin: 8px 4px 0;
  height: 48px;
  background: var(--monzo-surface);
  border-radius: 10px;
}

/* ----- Variant A — Neutral (chosen) ----- */
/* No modifier needed; .rec-exp-a uses the base styling above.        */
.rec-exp.is-chosen .rec-exp-card {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ----- Variant B — Branded red card ----- */
.rec-exp-b .rec-exp-body { padding: 2px 0 6px; }
.rec-exp-brand-card {
  position: relative;
  width: calc(100% - 16px);
  margin: 4px 8px 0;
  padding: 14px 14px 12px;
  background: #ec1c24;
  color: #fff;
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.rec-exp-brand-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.rec-exp-brand-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
}
.rec-exp-brand-row span {
  width: 14px;
  height: 14px;
  display: grid;
  place-items: center;
  font-size: 10px;
  color: #fff;
}
.rec-exp-brand-logo {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  background: #fff;
  color: #ec1c24;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 16px;
}

/* ----- Variant C — Full red hero ----- */
.rec-exp-c {
  background: var(--monzo-surface);
  padding: 0;
}
.rec-exp-toolbar-on-hero,
.rec-exp-hero-body {
  background: #ec1c24;
  color: #fff;
}
.rec-exp-toolbar-on-hero {
  padding: 14px 10px 10px;
}
.rec-exp-toolbar-on-hero .rec-exp-chev { background: rgba(255, 255, 255, 0.25); color: #fff; }
.rec-exp-toolbar-on-hero .rec-exp-chat { background: rgba(255, 255, 255, 0.25); color: #fff; }
.rec-exp-hero-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px 0 18px;
  border-radius: 0 0 16px 16px;
}
.rec-exp-logo-on-hero {
  background: #fff;
  color: #ec1c24;
  border: none;
}
.rec-exp-head-on-hero,
.rec-exp-sub-on-hero { color: #fff; }
.rec-exp-sub-on-hero { opacity: 0.9; }
.rec-exp-hint-overlap {
  margin-top: 16px;
}

/* ----- Variant D — Spotlight stats ----- */
.rec-exp-d {
  background: linear-gradient(180deg, #ffb6a0 0%, #ffe5dd 55%, var(--monzo-bg) 100%);
}
.rec-exp-toolbar-on-spotlight { color: var(--monzo-ink); }
.rec-exp-spotlight-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 10px 0 0;
}
.rec-exp-logo-on-spotlight {
  background: #fff;
  color: #ec1c24;
  width: 44px; height: 44px;
  border-radius: 12px;
  border: 1px solid var(--monzo-separator);
}
.rec-exp-spotlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  width: calc(100% - 12px);
  margin: 0 6px;
}
.rec-exp-spotlights > div {
  background: #fff;
  border-radius: 10px;
  padding: 10px 6px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}
.rec-exp-spotlights strong {
  font-size: 14px;
  font-weight: 700;
  color: var(--monzo-ink);
}
.rec-exp-spotlights span {
  font-size: 10px;
  color: var(--monzo-ink-soft);
}

/* Figcaption for each variant */
.rec-exp figcaption {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.rec-exp-label {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}
.rec-exp-tag {
  padding: 2px 8px;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.rec-exp figcaption p {
  margin: 0;
  font-size: 14px;
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: none;
}

/* Aside callout — used for the "data is incomplete" constraint note */
.cs-aside {
  margin-top: 40px;
  padding: 20px 24px;
  background: var(--bg-raised);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
}
.cs-aside .mono-label { display: block; margin-bottom: 8px; }
.cs-aside p {
  margin: 0;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: none;
}


/* ---------------------------------------------------------------------
   7. Body layout — sticky left rail + main content column
   --------------------------------------------------------------------- */
.cs-body {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 80px;
  padding-top: 40px;
}
.cs-rail {
  position: sticky;
  top: 40px;
  align-self: start;
  height: max-content;
}
.cs-rail ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.cs-rail li {
  position: relative;
  padding-left: 24px;
  color: var(--ink-muted);
  cursor: pointer;
  transition: color 200ms ease, padding-left 200ms ease;
}
.cs-rail li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 12px;
  height: 1px;
  background: currentColor;
  transition: width 220ms ease;
}
.cs-rail li.is-active {
  color: var(--ink);
  padding-left: 36px;
}
.cs-rail li.is-active::before {
  width: 24px;
  background: var(--accent);
}

.cs-main {
  max-width: 760px;
}


/* ---------------------------------------------------------------------
   8. Section blocks
   --------------------------------------------------------------------- */
.cs-section {
  padding: 48px 0;
  border-top: 1px solid var(--line);
}
.cs-section:first-of-type {
  padding-top: 0;
  border-top: none;
}
.cs-section h2 {
  margin: 16px 0 24px;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.15;
  letter-spacing: -0.025em;
}
.cs-section p {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.cs-section p strong {
  color: var(--ink);
  font-weight: 500;
}
.cs-lead {
  font-family: var(--font-display);
  font-size: clamp(20px, 2vw, 24px) !important;
  line-height: 1.45 !important;
  color: var(--ink) !important;
  max-width: 30ch;
}

/* Pain list — the three problem cards (Trust / Timing / Continuity) */
.cs-pain {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.cs-pain li {
  padding: 1.5rem;
  background: rgba(0, 0, 0, 0.04);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--ink-soft);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.cs-pain li:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}
.cs-pain li strong {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}

/* Figures — full-bleed images with a small caption */
.cs-figure {
  margin: 32px 0 0;
  padding: 0;
}
.cs-figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 20px;
  background: var(--bg-raised);
}
.cs-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-muted);
}

/* Two-column grid for user-needs style sections */
.cs-cols {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 24px 0;
}
.cs-col {
  padding: 24px;
  background: var(--bg-raised);
  border-radius: 18px;
}
.cs-col h4 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 16px;
  color: var(--ink);
  letter-spacing: -0.01em;
}

/* Plain bullet list */
.cs-bullets {
  margin: 0;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-soft);
}
.cs-bullets li {
  margin-bottom: 4px;
}

/* Inline sub-heading inside a section */
.cs-sub {
  margin: 32px 0 16px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 20px;
  letter-spacing: -0.015em;
  color: var(--ink);
}

/* Variant of the pain list that spans full width with one column */
.cs-pain-wide {
  grid-template-columns: 1fr;
}

/* External-links row (e.g. prototype videos) */
.cs-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 24px;
}
.cs-links a {
  padding: 12px 16px;
  background: var(--bg-raised);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
}
.cs-links a:hover {
  background: var(--accent);
  color: #fff;
}

/* User quotes */
.cs-quotes {
  display: grid;
  gap: 20px;
  margin: 32px 0;
}
.cs-quotes blockquote {
  margin: 0;
  padding: 20px 24px;
  background: var(--bg-raised);
  border-left: 3px solid var(--accent);
  border-radius: 18px;
}
.cs-quotes blockquote p {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.4;
  color: var(--ink);
}
.cs-quotes blockquote cite {
  font-family: var(--font-mono);
  font-size: 12px;
  font-style: normal;
  color: var(--ink-muted);
}

/* Numerical stats grid (Discovery section) */
.cs-stats {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.cs-stats li {
  min-height: 140px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.cs-stat-num {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--accent);
}
.cs-stat-lbl {
  font-family: var(--font-display);
  font-size: 14px;
  line-height: 1.35;
  color: var(--ink-soft);
}

/* Principles cards. The number spans two rows so the title and body
   both live in the right column (otherwise body wraps in the 60px col). */
.cs-principles {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.cs-principles li {
  display: grid;
  grid-template-columns: 60px 1fr;
  grid-template-rows: auto auto;
  column-gap: 20px;
  row-gap: 6px;
  align-items: start;
  padding: 28px;
  background: var(--bg-raised);
  border-radius: 20px;
}
.cs-pnum {
  grid-row: 1 / span 2;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
}
.cs-principles h3 {
  grid-column: 2;
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.cs-principles p {
  grid-column: 2;
  margin: 0;
  font-size: 15px;
  line-height: 1.45;
  color: var(--ink-soft);
}

/* Process steps grid */
.cs-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.cs-step {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 18px;
}
.cs-step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-muted);
}
.cs-step h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 20px;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.cs-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.45;
}


/* ---------------------------------------------------------------------
   9. Before/after compare slider
   Two absolutely-positioned panes stacked on top of each other. The
   "after" pane is clipped from the left using clip-path; dragging the
   handle changes the clip percentage.
   --------------------------------------------------------------------- */
.compare {
  position: relative;
  height: 700px;
  margin-top: 40px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 28px;
  overflow: hidden;
  user-select: none;
}
.compare-pane {
  position: absolute;
  inset: 0;
  padding: 44px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.compare-after {
  clip-path: inset(0 0 0 50%);
}
.compare-label {
  position: absolute;
  top: 20px;
  padding: 6px 10px;
  background: var(--bg);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.compare-before .compare-label { left: 24px; }
.compare-after  .compare-label { right: 24px; }

/* The draggable vertical handle */
.compare-handle {
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 2px;
  background: var(--ink);
  cursor: ew-resize;
  transform: translateX(-50%);
  z-index: 3;
  outline: none;
}
.compare-handle-grip {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--ink);
  display: grid;
  place-items: center;
  box-shadow: 0 10px 20px -8px rgba(0, 0, 0, 0.35);
}
.compare-handle-grip::before,
.compare-handle-grip::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 0;
  height: 0;
  border: 6px solid transparent;
  transform: translateY(-50%);
}
.compare-handle-grip::before { left: 10px;  border-right-color: #fff; }
.compare-handle-grip::after  { right: 10px; border-left-color:  #fff; }


/* ---------------------------------------------------------------------
   10. Impact cards + big quote + reflection + credits
   --------------------------------------------------------------------- */
.cs-impact {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.cs-impact-card {
  min-height: 180px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--ink);
  color: var(--bg);
  border-radius: 22px;
}
.cs-impact-card:nth-child(odd) {
  background: var(--accent);
  color: #fff;
}
.cs-impact-num {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(48px, 6vw, 72px);
  line-height: 1;
  letter-spacing: -0.03em;
}
.cs-impact-lbl {
  font-family: var(--font-display);
  font-size: 14px;
  line-height: 1.4;
  opacity: 0.8;
}

.cs-big-quote {
  margin: 48px 0 0;
  padding: 40px;
  background: var(--bg-raised);
  border-radius: 24px;
}
.cs-big-quote p {
  margin: 0 0 16px !important;
  max-width: none !important;
  font-family: var(--font-display);
  font-weight: 500 !important;
  font-size: clamp(22px, 2.4vw, 30px) !important;
  line-height: 1.35 !important;
  letter-spacing: -0.015em;
  color: var(--ink) !important;
}
.cs-big-quote cite {
  font-family: var(--font-mono);
  font-size: 12px;
  font-style: normal;
  color: var(--ink-muted);
}

.cs-reflect {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.cs-reflect li {
  padding-left: 24px;
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.45;
  color: var(--ink-soft);
  border-left: 3px solid var(--accent);
}

.cs-credits {
  padding-bottom: 96px;
}
.cs-next {
  display: inline-block;
  margin-top: 24px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 20px;
  letter-spacing: -0.015em;
  color: var(--accent);
}
.cs-next:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* Home-page card link inherits card styles and just adds a pointer. */
.card-link {
  cursor: pointer;
}


/* ---------------------------------------------------------------------
   11. Responsive
   --------------------------------------------------------------------- */
@media (max-width: 960px) {
  .cs-body {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .cs-rail { display: none; }
  .rec-exp-grid { grid-template-columns: 1fr; }

  .cs-meta { grid-template-columns: repeat(2, 1fr); }

  .cs-hero-stage {
    height: 540px;
    margin: 0 -20px;
  }
  .phone          { width: 230px; height: 500px; border-radius: 32px; }
  .phone-notch    { width: 70px; height: 22px; top: 12px; }
  .phone-screen   { padding: 42px 12px 12px; border-radius: 26px; }
  .phone-before   { left: calc(50% - 200px); }
  .phone-after    { left: calc(50% - 32px); }

  .cs-stats,
  .cs-steps,
  .cs-impact      { grid-template-columns: 1fr; }

  .cs-pain        { grid-template-columns: 1fr; }

  .compare        { height: 600px; }
}