/* ======================================================================
   ZAUNTURA — Material section, reimagined ("material lab / spec-sheet")
   All classes namespaced .mr-* to avoid collision with legacy .mtx-*.
   Colors & fonts via design tokens only (subtle rgba overlays allowed).
   ====================================================================== */

.mr-section { position: relative; }

/* current-material accent ("ink" of the selected werkstoff) lives on .mr-lab */
.mr-lab {
  --mr-ink: #5b656c;
  --mr-ease: cubic-bezier(.3, .8, .4, 1);
  margin-top: clamp(34px, 4vw, 56px);
}

/* ----------------------------------------------------------------------
   Switcher  (segmented tablist with sliding thumb)
   ---------------------------------------------------------------------- */
.mr-switch {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  padding: 6px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: calc(var(--r-card) + 4px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .04);
  max-width: 720px;
}
.mr-thumb {
  position: absolute;
  top: 6px;
  left: 6px;
  width: calc((100% - 12px - 12px) / 3);
  height: calc(100% - 12px);
  border-radius: var(--r-card);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, .07), rgba(0, 0, 0, .04)),
    var(--surface);
  border: 1px solid var(--line);
  box-shadow:
    0 10px 30px -14px rgba(22, 25, 28, .5),
    inset 0 0 0 1px rgba(var(--accent-glow), .12);
  transform: translateX(var(--mr-x, 0));
  transition: transform .5s var(--mr-ease);
  z-index: 1;
}
.mr-thumb::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--mr-ink);
  opacity: .9;
  transition: background .45s var(--mr-ease);
}

.mr-opt {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: transparent;
  border: 0;
  border-radius: var(--r-card);
  cursor: pointer;
  text-align: left;
  color: var(--text-dim);
  transition: color .35s var(--mr-ease);
  font-family: var(--font-display);
}
.mr-opt:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.mr-opt.is-on { color: var(--text); }

.mr-opt-sw {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--c1), var(--c2));
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, .14),
    0 2px 6px -2px rgba(0, 0, 0, .4);
}
.mr-opt-tx { display: flex; flex-direction: column; line-height: 1.15; }
.mr-opt-n { font-weight: 700; font-size: 15px; letter-spacing: .01em; }
.mr-opt-d {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 2px;
}

/* ----------------------------------------------------------------------
   Body grid: visual + spec panel
   ---------------------------------------------------------------------- */
.mr-body {
  margin-top: clamp(18px, 2.4vw, 30px);
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
  gap: clamp(18px, 2.2vw, 32px);
  align-items: stretch;
}

/* ---- Cinematic visual ---- */
.mr-visual {
  position: relative;
  min-height: 440px;
  border-radius: calc(var(--r-card) + 6px);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-deep);
  box-shadow: 0 40px 80px -50px rgba(22, 25, 28, .65);
  isolation: isolate;
}
.mr-frame {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transform: scale(1.045);
  transition: opacity .7s var(--mr-ease), transform 1.1s var(--mr-ease), visibility 0s linear .7s;
  z-index: 1;
}
.mr-frame.is-on {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
  transition: opacity .7s var(--mr-ease), transform 7s ease-out, visibility 0s;
  z-index: 2;
}
.mr-frame image-slot,
.mr-frame > image-slot {
  display: block;
  width: 100%;
  height: 100%;
}
.mr-frame ::part(media),
.mr-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* WPC: typographic / grain panel (no photo) */
.mr-frame--wpc {
  display: grid;
  place-content: center;
  text-align: center;
  background:
    radial-gradient(120% 120% at 30% 0%, rgba(156, 111, 63, .55), transparent 60%),
    linear-gradient(160deg, #6b4a28 0%, #4a3219 60%, #3a2713 100%);
}
.mr-wpc-grain {
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    92deg,
    rgba(255, 255, 255, .05) 0 2px,
    transparent 2px 7px,
    rgba(0, 0, 0, .10) 7px 9px,
    transparent 9px 16px);
  mix-blend-mode: overlay;
  opacity: .7;
}
.mr-wpc-word {
  position: relative;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(64px, 11vw, 132px);
  letter-spacing: .04em;
  line-height: .9;
  color: rgba(255, 251, 244, .96);
  text-shadow: 0 2px 30px rgba(0, 0, 0, .4);
}
.mr-wpc-sub {
  position: relative;
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: rgba(255, 251, 244, .72);
}

.mr-vignette {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(10, 12, 14, .42) 0%, transparent 26%, transparent 52%, rgba(10, 12, 14, .72) 100%),
    radial-gradient(120% 80% at 50% 120%, rgba(var(--accent-glow), .10), transparent 60%);
}

/* glass durability badge */
.mr-durability {
  position: absolute;
  z-index: 5;
  top: 18px;
  right: 18px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(18, 21, 24, .42);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  backdrop-filter: blur(14px) saturate(1.2);
  border: 1px solid rgba(255, 255, 255, .14);
  box-shadow: 0 18px 40px -22px rgba(0, 0, 0, .7);
  text-align: right;
  min-width: 132px;
}
.mr-dur-cap {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
}
.mr-dur-fig {
  display: flex;
  align-items: baseline;
  justify-content: flex-end;
  gap: 6px;
  color: #fff;
}
.mr-dur-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 38px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}
.mr-dur-unit {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .02em;
  color: rgba(255, 255, 255, .82);
}
.mr-dur-sub {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .02em;
  color: rgba(255, 255, 255, .66);
}

/* top / bottom glass strips */
.mr-vtop, .mr-vbot {
  position: absolute;
  z-index: 4;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  padding: 16px 18px;
}
.mr-vtop { top: 0; justify-content: space-between; gap: 12px; }
.mr-vbot { bottom: 0; flex-direction: column; align-items: flex-start; gap: 2px; }

.mr-finish {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: rgba(255, 255, 255, .9);
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(18, 21, 24, .4);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, .12);
  transition: opacity .3s var(--mr-ease);
}
.mr-swatches { display: inline-flex; gap: 6px; }
.mr-swatches i {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .35), 0 2px 6px -2px rgba(0, 0, 0, .6);
  transition: transform .3s var(--mr-ease);
}
.mr-swatches i:hover { transform: scale(1.18); }

.mr-vno {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
}
.mr-vname {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1;
  color: #fff;
  text-shadow: 0 2px 24px rgba(0, 0, 0, .45);
}

/* swap pulse on visual strips when material changes */
.mr-visual.is-swap .mr-vtop,
.mr-visual.is-swap .mr-vbot,
.mr-visual.is-swap .mr-durability { opacity: 0; }
.mr-vtop, .mr-vbot, .mr-durability { transition: opacity .26s var(--mr-ease); }

/* ----------------------------------------------------------------------
   Spec panel
   ---------------------------------------------------------------------- */
.mr-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(22px, 2.4vw, 34px);
  border-radius: calc(var(--r-card) + 6px);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: 0 30px 70px -54px rgba(22, 25, 28, .55);
  overflow: hidden;
}
.mr-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--mr-ink), var(--accent));
  opacity: .85;
  transition: background .5s var(--mr-ease);
}
/* cross-fade content while swapping */
.mr-panel.is-swap .mr-lead,
.mr-panel.is-swap .mr-metrics,
.mr-panel.is-swap .mr-chips,
.mr-panel.is-swap .mr-facts,
.mr-panel.is-swap .mr-ideal {
  opacity: 0;
  transform: translateY(8px);
}
.mr-lead, .mr-metrics, .mr-chips, .mr-facts, .mr-ideal {
  transition: opacity .3s var(--mr-ease), transform .3s var(--mr-ease);
}

.mr-lead {
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.62;
  color: var(--text-dim);
  margin: 6px 0 0;
  max-width: 52ch;
}

/* metric bars */
.mr-metrics {
  margin-top: clamp(20px, 2.2vw, 28px);
  display: grid;
  gap: 15px;
}
.mr-metric { display: grid; gap: 7px; }
.mr-ml {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.mr-mk {
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--text);
}
.mr-mv {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-dim);
}
.mr-track {
  position: relative;
  height: 7px;
  border-radius: 999px;
  background: var(--bg-deep);
  overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(22, 25, 28, .12);
}
.mr-track > i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--mr-ink), var(--accent));
  box-shadow: 0 0 14px -2px rgba(var(--accent-glow), .55);
  transition: width .9s var(--mr-ease), background .5s var(--mr-ease);
}

/* spec chips */
.mr-chips {
  margin-top: clamp(18px, 2vw, 24px);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.mr-chips span {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--text);
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  white-space: nowrap;
}

/* key facts */
.mr-facts {
  margin-top: clamp(18px, 2vw, 24px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}
.mr-fact {
  background: var(--surface);
  padding: 14px 14px 13px;
  text-align: left;
}
.mr-fn {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  line-height: 1;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.mr-fn .u {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-dim);
  margin-left: 1px;
}
.mr-fl {
  margin-top: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* ideal for */
.mr-ideal {
  margin-top: auto;
  padding-top: clamp(18px, 2vw, 24px);
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.mr-il {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
}
.mr-iv {
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
}

/* ----------------------------------------------------------------------
   At-a-glance comparison (all three at once)
   ---------------------------------------------------------------------- */
.mr-compare {
  margin-top: clamp(22px, 2.6vw, 36px);
  padding: clamp(20px, 2.4vw, 30px);
  border-radius: calc(var(--r-card) + 6px);
  background: var(--surface-2);
  border: 1px solid var(--line);
}
.mr-compare-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.mr-compare-t {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .02em;
  color: var(--text);
}
.mr-compare-s {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--text-dim);
}
.mr-compare-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(10px, 1.4vw, 20px);
}
.mr-cmp {
  display: grid;
  gap: 12px;
  padding: 16px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
}
.mr-cmp-h {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.mr-cmp-row {
  display: grid;
  grid-template-columns: 64px 1fr 38px;
  align-items: center;
  gap: 10px;
}
.mr-cmp-name {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
}
.mr-cmp-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: 0 0 auto;
}
.mr-cmp-bar {
  position: relative;
  height: 5px;
  border-radius: 999px;
  background: var(--bg-deep);
  overflow: hidden;
}
.mr-cmp-bar > i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 999px;
  transition: width 1s var(--mr-ease);
}
.mr-cmp-pct {
  font-family: var(--font-display);
  font-size: 11.5px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-dim);
  text-align: right;
}
.mr-cmp.is-active {
  border-color: rgba(var(--accent-glow), .5);
  box-shadow: 0 0 0 1px rgba(var(--accent-glow), .25);
}

/* ----------------------------------------------------------------------
   Responsive
   ---------------------------------------------------------------------- */
@media (max-width: 1000px) {
  .mr-body { grid-template-columns: 1fr; }
  .mr-visual { min-height: 360px; }
  .mr-compare-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .mr-switch { grid-template-columns: 1fr; gap: 4px; }
  .mr-thumb {
    width: calc(100% - 12px);
    height: calc((100% - 12px - 8px) / 3);
    transform: translateY(var(--mr-y, 0));
  }
  .mr-thumb::after { left: 16px; right: auto; top: 14px; bottom: 14px; width: 2px; height: auto; }
  .mr-opt-d { display: none; }
  .mr-visual { min-height: 300px; }
  .mr-durability { top: 12px; right: 12px; padding: 11px 13px; min-width: 116px; }
  .mr-dur-num { font-size: 30px; }
  .mr-facts { grid-template-columns: 1fr; }
  .mr-compare-grid { grid-template-columns: 1fr; }
}

/* ----------------------------------------------------------------------
   Reduced motion
   ---------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .mr-thumb, .mr-frame, .mr-frame.is-on, .mr-track > i, .mr-cmp-bar > i,
  .mr-lead, .mr-metrics, .mr-chips, .mr-facts, .mr-ideal,
  .mr-finish, .mr-vtop, .mr-vbot, .mr-durability {
    transition: none !important;
  }
  .mr-frame.is-on { transform: none; }
}