/* Cor del Món shared base CSS, v1.1
 * v1.0: legacy rose tokens and class names (kept verbatim for backward compatibility)
 * v1.1: Material Design 3 tokens (additive), 2026 layout primitives (bento, glass, scroll-driven)
 *
 * Each city declares its --rose, --bg, --font-serif, --font-sans via an inline <style> tag.
 * Changing --rose flows through the M3 palette below via color-mix().
 */

:root {
  /* Legacy rose tokens (v1.0). Untouched, every existing city still works. */
  --rose:           #e11d48;
  --rose-dark:      #880e4f;
  --rose-light:     #fb7185;
  --rose-pale:      #fda4af;
  --bg:             #0b0614;
  --bg-card:        rgba(225, 29, 72, 0.03);
  --bg-card-hover:  rgba(225, 29, 72, 0.05);
  --bg-gcard:       linear-gradient(160deg, rgba(225,29,72,0.05), rgba(45,18,66,0.10));
  --border-soft:    rgba(225, 29, 72, 0.10);
  --border-mid:     rgba(225, 29, 72, 0.18);
  --text-primary:   #fce4ec;
  --text-muted:     #b07a88;
  --text-faint:     #8a5a66;
  --text-hint:      #9a6b76;
  --pathway:        #86efac;
  --pathway-text:   #a3d9c8;
  --problem-text:   #f9a8b8;
  --font-serif:     "Playfair Display", Georgia, serif;
  --font-sans:      "Sora", system-ui, -apple-system, sans-serif;

  /* === Material Design 3 system colour tokens (dark scheme, derived from --rose) === */
  --md-sys-color-primary:                  var(--rose);
  --md-sys-color-on-primary:               #ffffff;
  --md-sys-color-primary-container:        var(--rose-dark);
  --md-sys-color-on-primary-container:     var(--rose-pale);
  --md-sys-color-secondary:                color-mix(in oklab, var(--rose) 60%, white 10%);
  --md-sys-color-on-secondary:             #ffffff;
  --md-sys-color-secondary-container:      color-mix(in oklab, var(--rose) 30%, var(--bg) 70%);
  --md-sys-color-on-secondary-container:   var(--rose-pale);
  --md-sys-color-tertiary:                 var(--rose-pale);
  --md-sys-color-on-tertiary:              var(--rose-dark);
  --md-sys-color-tertiary-container:       color-mix(in oklab, var(--rose-pale) 25%, var(--bg) 75%);
  --md-sys-color-on-tertiary-container:    var(--text-primary);

  --md-sys-color-surface:                  var(--bg);
  --md-sys-color-surface-dim:              color-mix(in oklab, var(--bg) 100%, black 10%);
  --md-sys-color-surface-bright:           color-mix(in oklab, var(--rose) 5%, var(--bg) 95%);
  --md-sys-color-surface-container-lowest: color-mix(in oklab, var(--rose) 1%, var(--bg) 99%);
  --md-sys-color-surface-container-low:    color-mix(in oklab, var(--rose) 3%, var(--bg) 97%);
  --md-sys-color-surface-container:        color-mix(in oklab, var(--rose) 5%, var(--bg) 95%);
  --md-sys-color-surface-container-high:   color-mix(in oklab, var(--rose) 8%, var(--bg) 92%);
  --md-sys-color-surface-container-highest:color-mix(in oklab, var(--rose) 12%, var(--bg) 88%);

  --md-sys-color-on-surface:               var(--text-primary);
  --md-sys-color-on-surface-variant:       var(--text-muted);
  --md-sys-color-outline:                  color-mix(in oklab, var(--rose) 30%, transparent);
  --md-sys-color-outline-variant:          color-mix(in oklab, var(--rose) 12%, transparent);
  --md-sys-color-shadow:                   #000000;
  --md-sys-color-scrim:                    rgba(0, 0, 0, 0.55);

  /* === M3 shape (corner radii) === */
  --md-shape-corner-none:        0;
  --md-shape-corner-extra-small: 4px;
  --md-shape-corner-small:       8px;
  --md-shape-corner-medium:      12px;
  --md-shape-corner-large:       16px;
  --md-shape-corner-extra-large: 28px;
  --md-shape-corner-full:        9999px;

  /* === M3 motion === */
  --md-motion-easing-standard:    cubic-bezier(0.2, 0, 0, 1);
  --md-motion-easing-emphasized:  cubic-bezier(0.2, 0, 0, 1);
  --md-motion-easing-decelerate:  cubic-bezier(0, 0, 0, 1);
  --md-motion-easing-accelerate:  cubic-bezier(0.3, 0, 1, 1);
  --md-motion-duration-short-1:   100ms;
  --md-motion-duration-short-2:   150ms;
  --md-motion-duration-short-3:   200ms;
  --md-motion-duration-medium-1:  250ms;
  --md-motion-duration-medium-2:  300ms;
  --md-motion-duration-long-1:    450ms;
  --md-motion-duration-long-2:    500ms;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  font-family: var(--font-serif);
  background: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  position: relative;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* === Animations === */

@keyframes hFloat {
  0%   { transform: translate3d(0,0,0) rotate(0deg) scale(0.4); opacity: 0; }
  8%   { opacity: 0.09; transform: translate3d(0,0,0) scale(1); }
  50%  { transform: translate3d(var(--d, 20px), -500px, 0) rotate(calc(var(--r, 15deg) * 0.6)); }
  100% { transform: translate3d(calc(var(--d, 20px) * 1.6), -1100px, 0) rotate(var(--r, 15deg)) scale(0.2); opacity: 0; }
}

@keyframes hPulse {
  0%, 100% { transform: scale(1); }
  15%      { transform: scale(1.08); }
  30%      { transform: scale(1); }
  45%      { transform: scale(1.04); }
  60%      { transform: scale(1); }
}

@keyframes heartbeatTick {
  0%, 100% { transform: scale(1); }
  10%      { transform: scale(1.18); }
  20%      { transform: scale(1); }
  30%      { transform: scale(1.10); }
  40%      { transform: scale(1); }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

@keyframes breathe {
  0%, 100% { box-shadow: 0 0 30px rgba(225, 29, 72, 0.12); }
  50%      { box-shadow: 0 0 70px rgba(225, 29, 72, 0.25); }
}

/* === Utilities === */

.s { font-family: var(--font-sans); }

.pill {
  font-family: var(--font-sans);
  font-size: 9px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 5px 11px;
  border-radius: 20px;
  border: 1px solid var(--border-soft);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.3s;
  white-space: nowrap;
}

.pill.on, .pill:hover {
  background: rgba(225, 29, 72, 0.18);
  border-color: var(--rose);
  color: #fff;
}

/* === Cards === */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: 18px;
  padding: 28px;
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--border-mid);
  transform: translateY(-2px);
  box-shadow: 0 20px 50px rgba(45, 18, 66, 0.12);
}

.gcard {
  background: var(--bg-gcard);
  border: 1px solid var(--border-soft);
  border-radius: 22px;
  padding: 40px;
  position: relative;
  overflow: hidden;
  animation: breathe 5s ease-in-out infinite;
}

/* === Tags === */

.tag {
  font-family: var(--font-sans);
  font-size: 9px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
  display: inline-block;
}

/* === Locations / network rows === */

.loc {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.3s;
  border: 1px solid transparent;
}

.loc:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-soft);
}

.loc.main {
  border-color: var(--border-mid);
  background: var(--bg-card);
}

/* === Section primitives === */

.sec {
  padding: 100px 30px;
  max-width: 1000px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.sec.visible {
  opacity: 1;
  transform: translateY(0);
}

.label {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--rose);
  margin-bottom: 12px;
}

.body {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 620px;
}

.metric {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--rose), var(--rose-light), var(--rose-pale));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: shimmer 5s linear infinite;
}

.viral {
  font-size: clamp(16px, 2.8vw, 26px);
  font-weight: 900;
  font-style: italic;
  text-align: center;
  padding: 32px 20px;
  color: var(--rose-pale);
}

.vheart {
  color: var(--rose);
  font-style: normal;
  font-size: 0.7em;
  margin: 0 10px;
}

/* === Layout grids === */

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid3 { display: flex; flex-wrap: wrap; gap: 18px; justify-content: center; }
.grid3 > * { flex: 1 1 280px; max-width: 340px; }

.sample {
  border-radius: 16px;
  padding: 26px;
  text-align: center;
  background: linear-gradient(145deg, #150a1f, #251035);
  border: 1px solid var(--border-soft);
}

.samples {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 20px;
}

.sample.wide { grid-column: 1 / -1; }

.riskrow {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-bottom: 1px solid rgba(225, 29, 72, 0.06);
  padding: 18px 0;
}

.riskrow:last-child { border-bottom: none; }

/* === Scroll progress === */

.scrollbar {
  position: fixed;
  left: 26px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(225, 29, 72, 0.015);
  z-index: 50;
}

.scrollfill {
  position: fixed;
  left: 26px;
  top: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--rose), var(--rose-dark));
  z-index: 51;
  opacity: 0.3;
}

/* === Network footer pills (Cor del Món shared) === */

.cor-pill {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid var(--border-mid);
  color: var(--text-muted);
  background: transparent;
  text-decoration: none;
  transition: all 0.3s;
}

.cor-pill.live {
  border-color: var(--rose);
  color: #fff;
  background: rgba(225, 29, 72, 0.18);
}

.cor-pill:hover {
  border-color: var(--rose);
  color: #fff;
}

/* === Mobile === */

@media (max-width: 700px) {
  .sec { padding: 70px 20px; }
  .grid2 { grid-template-columns: 1fr; }
  .grid3 > * { flex: 1 1 100%; max-width: 100%; }
  .samples { grid-template-columns: 1fr; }
  .riskrow { grid-template-columns: 1fr; gap: 12px; padding: 16px 0; }
  .gcard { padding: 24px; }
  .scrollbar, .scrollfill { display: none; }
}

/* ===================================================================
 * Material Design 3 utilities + 2026 layout primitives (v1.1)
 * Additive. Existing classes above continue to work unchanged.
 * =================================================================== */

/* === M3 type scale === */

.m3-display-large   { font-family: var(--font-serif); font-weight: 900; font-size: clamp(40px, 7vw, 57px); line-height: 1.05; letter-spacing: -0.02em; }
.m3-display-medium  { font-family: var(--font-serif); font-weight: 900; font-size: clamp(34px, 5.5vw, 45px); line-height: 1.1; letter-spacing: -0.01em; }
.m3-display-small   { font-family: var(--font-serif); font-weight: 900; font-size: clamp(28px, 4.5vw, 36px); line-height: 1.15; }
.m3-headline-large  { font-family: var(--font-serif); font-weight: 700; font-size: clamp(24px, 3.6vw, 32px); line-height: 1.2; }
.m3-headline-medium { font-family: var(--font-serif); font-weight: 700; font-size: clamp(22px, 3vw, 28px); line-height: 1.25; }
.m3-headline-small  { font-family: var(--font-serif); font-weight: 700; font-size: clamp(20px, 2.4vw, 24px); line-height: 1.3; }
.m3-title-large     { font-family: var(--font-sans); font-weight: 600; font-size: 22px; line-height: 1.35; }
.m3-title-medium    { font-family: var(--font-sans); font-weight: 600; font-size: 16px; line-height: 1.4; letter-spacing: 0.01em; }
.m3-title-small     { font-family: var(--font-sans); font-weight: 600; font-size: 14px; line-height: 1.4; letter-spacing: 0.01em; }
.m3-body-large      { font-family: var(--font-sans); font-weight: 400; font-size: 16px; line-height: 1.6; color: var(--md-sys-color-on-surface-variant); }
.m3-body-medium     { font-family: var(--font-sans); font-weight: 400; font-size: 14px; line-height: 1.65; color: var(--md-sys-color-on-surface-variant); }
.m3-body-small      { font-family: var(--font-sans); font-weight: 400; font-size: 12px; line-height: 1.65; color: var(--md-sys-color-on-surface-variant); }
.m3-label-large     { font-family: var(--font-sans); font-weight: 600; font-size: 14px; line-height: 1.4; letter-spacing: 0.1em; text-transform: uppercase; }
.m3-label-medium    { font-family: var(--font-sans); font-weight: 600; font-size: 12px; line-height: 1.4; letter-spacing: 0.1em; text-transform: uppercase; }
.m3-label-small     { font-family: var(--font-sans); font-weight: 600; font-size: 11px; line-height: 1.4; letter-spacing: 0.15em; text-transform: uppercase; color: var(--md-sys-color-primary); }

/* === M3 surfaces === */

.m3-surface                   { background: var(--md-sys-color-surface);                 color: var(--md-sys-color-on-surface); }
.m3-surface-container-lowest  { background: var(--md-sys-color-surface-container-lowest); color: var(--md-sys-color-on-surface); }
.m3-surface-container-low     { background: var(--md-sys-color-surface-container-low);    color: var(--md-sys-color-on-surface); }
.m3-surface-container         { background: var(--md-sys-color-surface-container);        color: var(--md-sys-color-on-surface); }
.m3-surface-container-high    { background: var(--md-sys-color-surface-container-high);   color: var(--md-sys-color-on-surface); }
.m3-surface-container-highest { background: var(--md-sys-color-surface-container-highest);color: var(--md-sys-color-on-surface); }

/* === M3 cards === */

.m3-card {
  border-radius: var(--md-shape-corner-large);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: transform var(--md-motion-duration-medium-1) var(--md-motion-easing-standard),
              background-color var(--md-motion-duration-short-3) var(--md-motion-easing-standard);
}

.m3-card-filled {
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  border-radius: var(--md-shape-corner-large);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: transform var(--md-motion-duration-medium-1) var(--md-motion-easing-standard),
              background-color var(--md-motion-duration-short-3) var(--md-motion-easing-standard);
}

.m3-card-filled:hover {
  background: var(--md-sys-color-surface-container-highest);
  transform: translateY(-2px);
}

.m3-card-elevated {
  background: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface);
  border-radius: var(--md-shape-corner-large);
  padding: 24px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 1px 3px var(--md-sys-color-shadow), 0 4px 8px color-mix(in oklab, var(--md-sys-color-shadow) 30%, transparent);
  transition: transform var(--md-motion-duration-medium-1) var(--md-motion-easing-standard),
              box-shadow var(--md-motion-duration-medium-1) var(--md-motion-easing-standard);
}

.m3-card-elevated:hover {
  transform: translateY(-3px);
  box-shadow: 0 2px 6px var(--md-sys-color-shadow), 0 12px 24px color-mix(in oklab, var(--md-sys-color-shadow) 35%, transparent);
}

.m3-card-outlined {
  background: transparent;
  color: var(--md-sys-color-on-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-shape-corner-large);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--md-motion-duration-short-3) var(--md-motion-easing-standard),
              transform var(--md-motion-duration-medium-1) var(--md-motion-easing-standard);
}

.m3-card-outlined:hover {
  border-color: var(--md-sys-color-outline);
  transform: translateY(-2px);
}

/* Featured card variant for the bento grid (Andorra slot) */
.m3-card-featured {
  background: linear-gradient(160deg,
    color-mix(in oklab, var(--rose) 12%, var(--bg) 88%),
    color-mix(in oklab, var(--rose) 4%, var(--bg) 96%));
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-shape-corner-extra-large);
  padding: 32px;
  position: relative;
  overflow: hidden;
}

/* === M3 buttons === */

.m3-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.04em;
  height: 40px;
  padding: 0 24px;
  border-radius: var(--md-shape-corner-full);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--md-motion-duration-short-3) var(--md-motion-easing-standard),
              transform var(--md-motion-duration-short-3) var(--md-motion-easing-standard);
  white-space: nowrap;
}

.m3-button:active { transform: scale(0.98); }

.m3-button-filled {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.m3-button-filled:hover {
  background: color-mix(in oklab, var(--md-sys-color-primary) 90%, white 10%);
}

.m3-button-tonal {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.m3-button-tonal:hover {
  background: color-mix(in oklab, var(--md-sys-color-secondary-container) 85%, var(--md-sys-color-on-secondary-container) 15%);
}

.m3-button-outlined {
  background: transparent;
  color: var(--md-sys-color-primary);
  border: 1px solid var(--md-sys-color-outline);
}

.m3-button-outlined:hover {
  background: color-mix(in oklab, var(--md-sys-color-primary) 8%, transparent);
}

.m3-button-text {
  background: transparent;
  color: var(--md-sys-color-primary);
  padding: 0 12px;
}

.m3-button-text:hover {
  background: color-mix(in oklab, var(--md-sys-color-primary) 8%, transparent);
}

/* === M3 chip === */

.m3-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 14px;
  border-radius: var(--md-shape-corner-small);
  border: 1px solid var(--md-sys-color-outline-variant);
  background: transparent;
  color: var(--md-sys-color-on-surface);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 13px;
  text-decoration: none;
  transition: background-color var(--md-motion-duration-short-3) var(--md-motion-easing-standard);
}

.m3-chip:hover {
  background: color-mix(in oklab, var(--md-sys-color-on-surface) 6%, transparent);
}

.m3-chip-active {
  background: var(--md-sys-color-secondary-container);
  border-color: transparent;
  color: var(--md-sys-color-on-secondary-container);
}

/* === M3 navigation: glass top bar === */

.m3-top-app-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: color-mix(in oklab, var(--md-sys-color-surface) 65%, transparent);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

@supports not (backdrop-filter: blur(20px)) {
  .m3-top-app-bar { background: var(--md-sys-color-surface); }
}

/* === Bento grid (container-query based) === */

.bento {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, 1fr);
  container-type: inline-size;
}

@container (min-width: 720px) {
  .bento { grid-template-columns: repeat(4, 1fr); gap: 20px; }
}

@container (min-width: 1080px) {
  .bento { gap: 24px; }
}

.bento > .featured-2x2 { grid-column: span 2; grid-row: span 2; }
.bento > .featured-2x1 { grid-column: span 2; grid-row: span 1; }

/* On narrow viewports the featured slot drops back to one column */
@container (max-width: 720px) {
  .bento > .featured-2x2,
  .bento > .featured-2x1 { grid-column: span 2; grid-row: auto; }
}

/* === Horizontal scroll-snap rail (Network Arc, mechanic carousel) === */

.scroll-rail {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: 24px;
  padding: 8px 24px 24px;
  scrollbar-width: thin;
  scrollbar-color: var(--md-sys-color-outline-variant) transparent;
}

.scroll-rail > * {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.scroll-rail::-webkit-scrollbar { height: 6px; }
.scroll-rail::-webkit-scrollbar-thumb { background: var(--md-sys-color-outline-variant); border-radius: 3px; }
.scroll-rail::-webkit-scrollbar-track { background: transparent; }

/* === Sections used by the redesigned landing === */

.m3-section {
  position: relative;
  z-index: 1;
  padding: 96px max(24px, env(safe-area-inset-left)) 96px;
  max-width: 1280px;
  margin: 0 auto;
}

.m3-hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 64px 24px;
  position: relative;
  z-index: 1;
}

.m3-cinematic {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 64px 24px;
  background: radial-gradient(ellipse at center,
    color-mix(in oklab, var(--rose) 12%, transparent) 0%,
    transparent 60%);
}

/* === Grain overlay === */

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' seed='1'/%3E%3CfeColorMatrix values='0 0 0 0 0.9, 0 0 0 0 0.7, 0 0 0 0 0.7, 0 0 0 0.5 0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* === Scroll-driven heart (Phase 0 cinematic Heartbeat showcase) === */

@supports (animation-timeline: scroll()) {
  .scroll-heart {
    animation: scroll-heart-grow linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 50%;
  }
  @keyframes scroll-heart-grow {
    from { transform: scale(0.5); opacity: 0.2; }
    to   { transform: scale(2.2); opacity: 1.0; }
  }
}

/* === Reduced motion overrides for the new patterns === */

@media (prefers-reduced-motion: reduce) {
  .m3-card-filled, .m3-card-elevated, .m3-card-outlined { transition: none; }
  .m3-card-filled:hover, .m3-card-elevated:hover, .m3-card-outlined:hover { transform: none; }
  .scroll-heart { animation: none !important; transform: none !important; }
}

/* === Mobile (M3 reflows) === */

@media (max-width: 700px) {
  .m3-section { padding: 64px 20px; }
  .m3-top-app-bar { height: 56px; padding: 0 16px; }
}