/* ==========================================================================
   BattleCross - Native Art Style Arena, Dungeon & Chat Theme System
   ========================================================================== */

/* -------------------------------------------------------------------------
   1. Root Variables & Tokens (Matching Native BattleCross Engine)
   ------------------------------------------------------------------------- */
:root {
  --bc-ink: #141a33;
  --bc-ink-rgb: 20, 26, 51;
  --bc-backdrop: rgba(10, 14, 28, 0.76);

  /* Gold Ribbon & Button Palette */
  --bc-gold-hi: #ffe978;
  --bc-gold: #ffc526;
  --bc-gold-lo: #e8962a;
  --bc-gold-deep: #78350f;

  /* Blue Ribbon & Action Palette */
  --bc-blue-hi: #93c5fd;
  --bc-blue: #3b82f6;
  --bc-blue-lo: #1d4ed8;
  --bc-blue-deep: #172554;

  /* Red Close & Danger Palette */
  --bc-red-hi: #fca5a5;
  --bc-red: #ef4444;
  --bc-red-lo: #b91c1c;
  --bc-red-deep: #450a0a;

  /* Green Ready & Health Palette */
  --bc-green-hi: #86efac;
  --bc-green: #22c55e;
  --bc-green-lo: #15803d;
  --bc-green-deep: #052e16;

  /* Purple Regal / Master Palette */
  --bc-purple-hi: #d8b4fe;
  --bc-purple: #a855f7;
  --bc-purple-lo: #7e22ce;
  --bc-purple-deep: #3b0764;

  /* Stitched Leather Frame Palette */
  --bc-leather-hi: #533827;
  --bc-leather: #382417;
  --bc-leather-lo: #23150d;
  --bc-leather-deep: #140b07;

  /* Aged Parchment Palette */
  --bc-paper-hi: #fff8e7;
  --bc-paper: #f4e8cc;
  --bc-paper-lo: #e5d3ab;
  --bc-paper-ink: #2b1f14;
  --bc-paper-ink-soft: #634f3c;
  --bc-stitch: #d4a76a;

  /* Sizing, Outlines & Depths */
  --bc-ol-thin: 1.5px;
  --bc-ol: 2px;
  --bc-ol-thick: 3px;
  --bc-press: 4px;
  --bc-press-sm: 2px;
  --bc-r-sm: 6px;
  --bc-r-md: 10px;
  --bc-r-lg: 16px;
  --bc-r-pill: 999px;
  --bc-text: #ffffff;
  --bc-text-outline: 0 1.5px 0 #141a33, 1.5px 0 0 #141a33, -1.5px 0 0 #141a33, 0 -1.5px 0 #141a33, 0 2px 3px rgba(0,0,0,0.7);
  --font-ui: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --bc-t-press: 70ms;
  --bc-t-release: 140ms;
  --bc-ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --bc-ease-pop: cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

/* -------------------------------------------------------------------------
   2. Bottom-Right Action Dock & Save Sync Pill
   ------------------------------------------------------------------------- */
#bc-bottom-dock {
  position: fixed;
  bottom: 14px;
  right: 14px;
  z-index: 99990;
  display: none;
  align-items: center;
  gap: 10px;
  font-family: var(--font-ui);
  user-select: none;
}

/* Authentic 3D Game Action Buttons */
.bc-dock-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 16px;
  border: var(--bc-ol) solid var(--bc-ink);
  border-radius: var(--bc-r-pill);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 900;
  color: var(--bc-text);
  text-shadow: var(--bc-text-outline);
  letter-spacing: .03em;
  cursor: pointer;
  touch-action: manipulation;
  box-shadow: 0 var(--bc-press) 0 var(--bc-ink), 0 6px 14px rgba(0, 0, 0, 0.55);
  transition: transform var(--bc-t-release) var(--bc-ease-bounce), filter .12s ease-out;
  user-select: none;
}

.bc-dock-btn:hover {
  filter: brightness(1.08);
}

.bc-dock-btn:active {
  transform: translateY(var(--bc-press)) scale(1.02, .95);
  box-shadow: 0 0 0 var(--bc-ink), 0 2px 4px rgba(0, 0, 0, 0.4);
}

.bc-dock-btn .bc-btn-ico {
  width: 20px;
  height: 20px;
  object-fit: contain;
  filter: drop-shadow(0 2px 0 var(--bc-ink));
  pointer-events: none;
}

.bc-btn-arena {
  --c-hi: var(--bc-gold-hi);
  --c: var(--bc-gold);
  --c-lo: var(--bc-gold-lo);
  --c-deep: var(--bc-gold-deep);
  background-image: linear-gradient(180deg, var(--c-hi) 0%, var(--c-hi) 46%, var(--c) 46%, var(--c) 86%, var(--c-lo) 86%, var(--c-lo) 100%);
}

.bc-btn-dungeon {
  --c-hi: var(--bc-blue-hi);
  --c: var(--bc-blue);
  --c-lo: var(--bc-blue-lo);
  --c-deep: var(--bc-blue-deep);
  background-image: linear-gradient(180deg, var(--c-hi) 0%, var(--c-hi) 46%, var(--c) 46%, var(--c) 86%, var(--c-lo) 86%, var(--c-lo) 100%);
}

/* Authentic Parchment User & Save Pill */
#bc-user-pill {
  position: static;
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 2px 14px 2px 8px;
  box-sizing: border-box;
  border: var(--bc-ol) solid var(--bc-ink);
  border-radius: var(--bc-r-pill);
  background: linear-gradient(180deg, var(--bc-paper-hi) 0%, var(--bc-paper-hi) 46%, var(--bc-paper) 46%, var(--bc-paper-lo) 100%);
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink), 0 4px 12px rgba(0, 0, 0, 0.4);
  color: var(--bc-paper-ink);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 800;
  user-select: none;
  white-space: nowrap;
}

.bc-pill-avatar-wrap {
  position: relative;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: var(--bc-ol-thin) solid var(--bc-ink);
  background: var(--bc-gold-hi);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.bc-pill-avatar-wrap img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}

.bc-pill-gem {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  border: 1px solid var(--bc-ink);
  box-shadow: 0 0 6px #10b981;
  flex-shrink: 0;
  animation: bc-gem-pulse 2s ease-in-out infinite alternate;
}

@keyframes bc-gem-pulse {
  0% { transform: scale(0.9); opacity: 0.8; }
  100% { transform: scale(1.15); opacity: 1; filter: drop-shadow(0 0 4px #34d399); }
}

.bc-pill-name {
  color: #8c5208;
  font-weight: 900;
  letter-spacing: .02em;
}

.bc-pill-sync {
  color: #634f3c;
  font-size: 11px;
  font-weight: 700;
}

.bc-pill-logout {
  color: var(--bc-text);
  font-size: 11px;
  font-weight: 900;
  padding: 3px 8px;
  border-radius: var(--bc-r-sm);
  border: var(--bc-ol-thin) solid var(--bc-ink);
  background-image: linear-gradient(180deg, var(--bc-red-hi) 0%, var(--bc-red) 50%, var(--bc-red-lo) 100%);
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink);
  text-shadow: 0 1px 0 var(--bc-ink);
  cursor: pointer;
  transition: transform 0.08s ease;
  line-height: 1;
}

.bc-pill-logout:hover {
  filter: brightness(1.12);
}

.bc-pill-logout:active {
  transform: translateY(var(--bc-press-sm));
  box-shadow: 0 0 0 var(--bc-ink);
}

/* -------------------------------------------------------------------------
   3. World & Party Instant Chat Box (Stitched Frame & Parchment Input)
   ------------------------------------------------------------------------- */
#bc-chat-pill {
  position: fixed;
  bottom: 14px;
  left: 14px;
  z-index: 99988;
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 16px 0 12px;
  border: var(--bc-ol) solid var(--bc-ink);
  border-radius: var(--bc-r-pill);
  --c-hi: var(--bc-gold-hi);
  --c: var(--bc-gold);
  --c-lo: var(--bc-gold-lo);
  background-image: linear-gradient(180deg, var(--c-hi) 0%, var(--c-hi) 46%, var(--c) 46%, var(--c) 86%, var(--c-lo) 86%, var(--c-lo) 100%);
  box-shadow: 0 var(--bc-press) 0 var(--bc-ink), 0 6px 16px rgba(0,0,0,0.5);
  color: var(--bc-text);
  text-shadow: var(--bc-text-outline);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 900;
  cursor: pointer;
  user-select: none;
  transition: transform var(--bc-t-release) var(--bc-ease-bounce), filter .12s ease-out;
}

#bc-chat-pill:hover {
  filter: brightness(1.08);
}

#bc-chat-pill:active {
  transform: translateY(var(--bc-press));
  box-shadow: 0 0 0 var(--bc-ink);
}

#bc-chat-pill .bc-btn-ico {
  width: 20px;
  height: 20px;
  filter: drop-shadow(0 2px 0 var(--bc-ink));
}

.bc-chat-unread {
  background: var(--bc-red);
  color: #fff;
  border: var(--bc-ol-thin) solid var(--bc-ink);
  box-shadow: 0 1px 0 var(--bc-ink);
  border-radius: 999px;
  padding: 1px 7px;
  font-size: 11px;
  font-weight: 900;
  line-height: 1.2;
  text-shadow: none;
}

#bc-chat-box {
  position: fixed;
  bottom: 14px;
  left: 14px;
  width: 380px;
  max-width: calc(100vw - 28px);
  height: 250px;
  box-sizing: border-box;
  border: var(--bc-ol-thick) solid var(--bc-ink);
  border-radius: var(--bc-r-lg);
  background: linear-gradient(180deg, var(--bc-leather-hi) 0, var(--bc-leather-hi) 1.2rem, var(--bc-leather) 1.2rem, var(--bc-leather) calc(100% - 1rem), var(--bc-leather-lo) 100%);
  box-shadow: 0 var(--bc-press) 0 var(--bc-ink), 0 16px 36px rgba(0, 0, 0, 0.75);
  z-index: 99988;
  display: none;
  flex-direction: column;
  overflow: hidden;
  font-family: var(--font-ui);
}

.bc-chat-stitch {
  position: absolute;
  inset: 2px;
  border: 1.5px dashed var(--bc-stitch);
  border-radius: calc(var(--bc-r-lg) - 4px);
  opacity: 0.65;
  pointer-events: none;
  z-index: 2;
}

.bc-chat-header {
  position: relative;
  z-index: 4;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 10px;
  background: rgba(18, 12, 8, 0.88);
  border-bottom: var(--bc-ol-thin) solid var(--bc-ink);
}

.bc-chat-tabs {
  display: flex;
  gap: 4px;
}

.bc-chat-tab {
  background: rgba(255, 255, 255, 0.08);
  border: var(--bc-ol-thin) solid rgba(255, 255, 255, 0.15);
  color: #d1c5b4;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: var(--bc-r-sm);
  cursor: pointer;
  transition: all 0.12s ease;
  user-select: none;
}

.bc-chat-tab:hover {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
}

.bc-chat-tab.active {
  background-image: linear-gradient(180deg, var(--bc-gold-hi) 0%, var(--bc-gold) 48%, var(--bc-gold-lo) 100%);
  border-color: var(--bc-ink);
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink);
  color: var(--bc-ink);
  text-shadow: none;
  font-weight: 900;
}

.bc-chat-tools {
  display: flex;
  align-items: center;
  gap: 6px;
}

.bc-chat-recruit-btn {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background-image: linear-gradient(180deg, var(--bc-gold-hi) 0%, var(--bc-gold) 48%, var(--bc-gold-lo) 100%);
  border: var(--bc-ol-thin) solid var(--bc-ink);
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink);
  color: var(--bc-ink);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 900;
  padding: 2px 8px;
  border-radius: var(--bc-r-sm);
  cursor: pointer;
  transition: transform 0.08s ease;
}

.bc-chat-recruit-btn:active {
  transform: translateY(var(--bc-press-sm));
  box-shadow: 0 0 0 var(--bc-ink);
}

.bc-chat-tool-btn {
  background: transparent;
  border: none;
  color: #c4b5a0;
  font-size: 13px;
  padding: 2px 4px;
  cursor: pointer;
}
.bc-chat-tool-btn:hover {
  color: #fff;
}

.bc-chat-body {
  position: relative;
  z-index: 3;
  flex: 1;
  overflow-y: auto;
  padding: 8px 12px;
  background: #15111d;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  line-height: 1.4;
  color: #f1ebd8;
  scrollbar-width: thin;
  scrollbar-color: var(--bc-leather) transparent;
}

.bc-chat-body::-webkit-scrollbar {
  width: 8px;
}
.bc-chat-body::-webkit-scrollbar-thumb {
  background: var(--bc-leather-hi);
  border: 1px solid var(--bc-ink);
  border-radius: var(--bc-r-pill);
}

.bc-msg-row {
  word-break: break-all;
}
.bc-msg-time {
  color: #7d7265;
  font-size: 10px;
  margin-right: 4px;
}
.bc-tag-world {
  color: var(--bc-gold);
  font-weight: 800;
  margin-right: 4px;
}
.bc-tag-party {
  color: var(--bc-blue-hi);
  font-weight: 800;
  margin-right: 4px;
}
.bc-tag-system {
  color: #f87171;
  font-weight: 800;
  margin-right: 4px;
}

.bc-msg-sender {
  font-weight: 800;
  cursor: pointer;
}
.bc-msg-sender.cls-warrior { color: #fca5a5; }
.bc-msg-sender.cls-mage { color: #d8b4fe; }
.bc-msg-sender.cls-paladin { color: #fef08a; }
.bc-msg-sender.cls-ranger { color: #86efac; }

.bc-msg-text {
  color: #f7f2e4;
}
.bc-msg-text.is-party {
  color: #bae6fd;
}
.bc-msg-text.is-system {
  color: #fde047;
  font-weight: 700;
}

/* Chat Recruit Parchment Card */
.bc-chat-card-recruit {
  background: linear-gradient(180deg, var(--bc-paper-hi) 0%, var(--bc-paper) 60%, var(--bc-paper-lo) 100%);
  border: var(--bc-ol-thin) solid var(--bc-ink);
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink);
  border-radius: var(--bc-r-md);
  padding: 8px 10px;
  margin: 4px 0;
  color: var(--bc-paper-ink);
}

.bc-card-rec-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: #8c5208;
  font-weight: 900;
  margin-bottom: 4px;
}

.bc-card-rec-body {
  font-size: 12px;
  color: var(--bc-paper-ink);
  margin-bottom: 6px;
  line-height: 1.35;
}

.bc-card-rec-btn {
  background-image: linear-gradient(180deg, var(--bc-green-hi) 0%, var(--bc-green) 50%, var(--bc-green-lo) 100%);
  border: var(--bc-ol-thin) solid var(--bc-ink);
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink);
  color: var(--bc-text);
  text-shadow: var(--bc-text-outline);
  border-radius: var(--bc-r-sm);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 900;
  padding: 3px 10px;
  cursor: pointer;
  transition: transform 0.08s ease;
}

.bc-card-rec-btn:active {
  transform: translateY(var(--bc-press-sm));
  box-shadow: 0 0 0 var(--bc-ink);
}

/* Footer Input */
.bc-chat-footer {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: rgba(18, 12, 8, 0.95);
  border-top: var(--bc-ol-thin) solid var(--bc-ink);
}

.bc-chat-channel-badge {
  font-size: 11px;
  font-weight: 900;
  color: var(--bc-ink);
  background-image: linear-gradient(180deg, var(--bc-gold-hi) 0%, var(--bc-gold) 100%);
  border: var(--bc-ol-thin) solid var(--bc-ink);
  padding: 2px 6px;
  border-radius: var(--bc-r-sm);
  cursor: pointer;
  white-space: nowrap;
}

.bc-chat-input-field {
  flex: 1;
  box-sizing: border-box;
  background: #fff8e3;
  border: var(--bc-ol-thin) solid #5a4128;
  border-radius: var(--bc-r-sm);
  padding: 5px 8px;
  color: #2b1d11;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  outline: none;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.3);
}

.bc-chat-input-field:focus {
  border-color: var(--bc-gold);
  background: #fff;
}

.bc-chat-send-btn {
  background-image: linear-gradient(180deg, var(--bc-gold-hi) 0%, var(--bc-gold) 48%, var(--bc-gold-lo) 100%);
  border: var(--bc-ol-thin) solid var(--bc-ink);
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink);
  color: var(--bc-text);
  text-shadow: var(--bc-text-outline);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 900;
  padding: 4px 12px;
  border-radius: var(--bc-r-sm);
  cursor: pointer;
  transition: transform 0.08s ease;
}

.bc-chat-send-btn:active {
  transform: translateY(var(--bc-press-sm));
  box-shadow: 0 0 0 var(--bc-ink);
}

/* -------------------------------------------------------------------------
   4. Native Modal Architecture (.f-modal, .f-modal--parchment)
   ------------------------------------------------------------------------- */
.f-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(clamp(.4rem, 2vw, 1rem) + env(safe-area-inset-top, 0px)) 
           calc(clamp(.4rem, 2vw, 1rem) + env(safe-area-inset-right, 0px)) 
           calc(clamp(.4rem, 2vw, 1rem) + env(safe-area-inset-bottom, 0px)) 
           calc(clamp(.4rem, 2vw, 1rem) + env(safe-area-inset-left, 0px));
  font-family: var(--font-ui);
  user-select: none;
}

.f-modal__backdrop {
  position: absolute;
  inset: 0;
  background-color: var(--bc-backdrop);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.f-modal__container {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: min(52rem, 96vw);
  max-height: 94vh;
  min-height: 480px;
  animation: bcModalIn 0.22s var(--bc-ease-pop);
}

@keyframes bcModalIn {
  from { opacity: 0; transform: scale(0.95) translateY(12px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* Modal Ribbon Header */
.f-modal__header {
  position: relative;
  z-index: 20;
  display: flex;
  flex-shrink: 0;
  justify-content: center;
  margin-bottom: -16px;
}

.f-modal__ribbon {
  position: relative;
  max-width: calc(100% - 3rem);
}

.f-modal__ribbon-tail {
  position: absolute;
  top: 24%;
  width: 24px;
  height: 82%;
  overflow: visible;
  pointer-events: none;
}

.f-modal__ribbon-tail.is-left {
  right: calc(100% - 4px);
}

.f-modal__ribbon-tail.is-right {
  left: calc(100% - 4px);
  transform: scaleX(-1);
}

.ribbon-gold {
  --c-hi: var(--bc-gold-hi);
  --c: var(--bc-gold);
  --c-lo: var(--bc-gold-lo);
  --c-deep: var(--bc-gold-deep);
}

.ribbon-blue {
  --c-hi: var(--bc-blue-hi);
  --c: var(--bc-blue);
  --c-lo: var(--bc-blue-lo);
  --c-deep: var(--bc-blue-deep);
}

.ribbon-purple {
  --c-hi: var(--bc-purple-hi);
  --c: var(--bc-purple);
  --c-lo: var(--bc-purple-lo);
  --c-deep: var(--bc-purple-deep);
}

.f-modal__ribbon-tail path {
  fill: var(--c-lo);
  stroke: var(--bc-ink);
  stroke-width: 3;
  stroke-linejoin: round;
}

.f-modal__ribbon-shadow {
  position: absolute;
  inset: 0;
  transform: translateY(var(--bc-press));
  border: var(--bc-ol-thick) solid var(--bc-ink);
  border-radius: var(--bc-r-md);
  background-color: var(--c-deep);
}

.f-modal__ribbon-body {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 2.35rem;
  padding: 0.35rem 2.2rem;
  border: var(--bc-ol-thick) solid var(--bc-ink);
  border-radius: var(--bc-r-md);
  background-image: linear-gradient(180deg, var(--c-hi) 0%, var(--c-hi) 44%, var(--c) 44%, var(--c) 88%, var(--c-lo) 88%, var(--c-lo) 100%);
  overflow: hidden;
}

.f-modal__ribbon-text {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--bc-text);
  text-shadow: var(--bc-text-outline);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .04em;
  font-size: clamp(1rem, 3.8vw, 1.45rem);
  line-height: 1.15;
}

.bc-ribbon-ico {
  width: 24px;
  height: 24px;
  object-fit: contain;
  filter: drop-shadow(0 2px 0 var(--bc-ink));
}

/* Modal Close Button (Top-Right 3D Red Button) */
.f-modal__close {
  --c-hi: var(--bc-red-hi);
  --c: var(--bc-red);
  --c-lo: var(--bc-red-lo);
  --c-deep: var(--bc-red-deep);
  position: absolute;
  top: 0;
  right: 0;
  z-index: 30;
  translate: 20% -28%;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 0;
  border-radius: var(--bc-r-md);
  background: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.f-modal__close:hover .f-modal__close-body {
  filter: brightness(1.08);
}

.f-modal__close:active .f-modal__close-body {
  transform: translateY(var(--bc-press-sm)) scale(1.04, .92);
}

.f-modal__close-shadow {
  position: absolute;
  inset: 0;
  transform: translateY(var(--bc-press-sm));
  border: var(--bc-ol) solid var(--bc-ink);
  border-radius: var(--bc-r-md);
  background-color: var(--c-deep);
}

.f-modal__close-body {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  border: var(--bc-ol) solid var(--bc-ink);
  border-radius: var(--bc-r-md);
  background-image: linear-gradient(180deg, var(--c-hi) 0%, var(--c-hi) 48%, var(--c) 48%, var(--c) 88%, var(--c-lo) 88%, var(--c-lo) 100%);
  color: var(--bc-text);
  overflow: hidden;
  transition: transform var(--bc-t-release) var(--bc-ease-bounce), filter .12s ease-out;
}

.f-modal__close-icon {
  width: 18px;
  height: 18px;
  filter: drop-shadow(0 1px 0 var(--bc-ink));
  pointer-events: none;
}

/* Modal Outer Leather Frame */
.f-modal__frame-wrap {
  position: relative;
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  min-height: 0;
}

.f-modal__frame-shadow {
  position: absolute;
  inset: 0;
  transform: translateY(clamp(5px, 1.4vw, 8px));
  border: var(--bc-ol-thick) solid var(--bc-ink);
  border-radius: var(--bc-r-lg);
  background-color: var(--bc-leather-deep);
}

.f-modal__frame {
  position: relative;
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  min-height: 0;
  padding: 8px;
  border: var(--bc-ol-thick) solid var(--bc-ink);
  border-radius: var(--bc-r-lg);
  background: linear-gradient(180deg, var(--bc-leather-hi) 0, var(--bc-leather-hi) 1.4rem, var(--bc-leather) 1.4rem, var(--bc-leather) calc(100% - 1.1rem), var(--bc-leather-lo) 100%);
}

.f-modal__stitch {
  position: absolute;
  inset: 3px;
  border: 2px dashed var(--bc-stitch);
  border-radius: calc(var(--bc-r-lg) - 6px);
  opacity: 0.8;
  pointer-events: none;
}

.f-modal__rivet {
  position: absolute;
  z-index: 5;
  width: 14px;
  height: 14px;
  background: url("../images/ui/orn-rivet.webp") center/contain no-repeat;
  pointer-events: none;
}
.f-modal__rivet.is-tl { top: 4px; left: 4px; }
.f-modal__rivet.is-bl { bottom: 4px; left: 4px; }
.f-modal__rivet.is-br { bottom: 4px; right: 4px; }

/* Parchment Modal Page */
.f-modal__page {
  position: relative;
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  min-height: 0;
  border: var(--bc-ol) solid var(--bc-ink);
  border-radius: calc(var(--bc-r-lg) - 8px);
  background: linear-gradient(180deg, var(--bc-paper-hi) 0%, var(--bc-paper-hi) 0.6rem, var(--bc-paper) 0.6rem, var(--bc-paper) calc(100% - 0.5rem), var(--bc-paper-lo) 100%);
  color: var(--bc-paper-ink);
  overflow: hidden;
  padding-top: 10px;
}

/* -------------------------------------------------------------------------
   5. Modal Internal Tabs, Bars & Parchment Cards
   ------------------------------------------------------------------------- */
.bc-tab-bar {
  display: flex;
  gap: 8px;
  padding: 8px 16px;
  border-bottom: var(--bc-ol-thin) solid rgba(var(--bc-ink-rgb), 0.2);
  background: rgba(var(--bc-ink-rgb), 0.04);
}

.bc-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 800;
  border-radius: var(--bc-r-sm);
  background: rgba(var(--bc-ink-rgb), 0.08);
  border: var(--bc-ol-thin) solid rgba(var(--bc-ink-rgb), 0.25);
  color: var(--bc-paper-ink-soft);
  cursor: pointer;
  transition: all 0.12s ease;
  user-select: none;
}

.bc-tab-btn:hover {
  background: rgba(var(--bc-ink-rgb), 0.15);
  color: var(--bc-paper-ink);
}

.bc-tab-btn.active {
  background-image: linear-gradient(180deg, var(--bc-gold-hi) 0%, var(--bc-gold) 48%, var(--bc-gold-lo) 100%);
  border-color: var(--bc-ink);
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink);
  color: var(--bc-text);
  text-shadow: var(--bc-text-outline);
}

.bc-modal-body {
  padding: 14px 18px;
  overflow-y: auto;
  flex: 1;
  scrollbar-width: thin;
  scrollbar-color: var(--bc-leather) transparent;
}

.bc-modal-body::-webkit-scrollbar {
  width: 8px;
}
.bc-modal-body::-webkit-scrollbar-thumb {
  background: var(--bc-leather-hi);
  border: 1px solid var(--bc-ink);
  border-radius: var(--bc-r-pill);
}

/* Arena Status Strip (Guild Ledger Plaque) */
.bc-arena-status-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(var(--bc-ink-rgb), 0.06);
  border: var(--bc-ol-thin) solid rgba(var(--bc-ink-rgb), 0.25);
  border-radius: var(--bc-r-md);
  padding: 10px 16px;
  margin-bottom: 14px;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.08);
}

.bc-stat-badge {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.bc-stat-badge .label {
  font-size: 11px;
  color: var(--bc-paper-ink-soft);
  font-weight: 700;
}
.bc-stat-badge .value {
  font-size: 16px;
  font-weight: 900;
  color: #8c5208;
}

/* Parchment Ledger Table */
.bc-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
  font-family: var(--font-ui);
}

.bc-table th {
  padding: 8px 10px;
  background: rgba(var(--bc-ink-rgb), 0.08);
  color: var(--bc-paper-ink);
  font-weight: 900;
  border-bottom: var(--bc-ol) solid rgba(var(--bc-ink-rgb), 0.35);
  font-size: 12px;
}

.bc-table td {
  padding: 9px 10px;
  border-bottom: 1px dashed rgba(var(--bc-ink-rgb), 0.18);
  color: var(--bc-paper-ink);
  font-weight: 600;
}

.bc-table tr:hover td {
  background: rgba(var(--bc-ink-rgb), 0.04);
}

.bc-rank-1 { color: #d97706; font-weight: 900; font-size: 14px; }
.bc-rank-2 { color: #475569; font-weight: 900; font-size: 14px; }
.bc-rank-3 { color: #92400e; font-weight: 900; font-size: 14px; }

.bc-tier-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--bc-r-pill);
  font-size: 11px;
  font-weight: 800;
  background-image: linear-gradient(180deg, var(--bc-gold-hi) 0%, var(--bc-gold) 100%);
  color: var(--bc-ink);
  border: var(--bc-ol-thin) solid var(--bc-ink);
  box-shadow: 0 1px 0 var(--bc-ink);
}

/* Opponent Matchmaking Cards (Bounty Board Style) */
.bc-opponents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin-top: 8px;
}

.bc-opp-card {
  background: linear-gradient(180deg, #fffcf5 0%, #faecd2 100%);
  border: var(--bc-ol-thin) solid var(--bc-ink);
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink), 0 4px 10px rgba(0,0,0,0.12);
  border-radius: var(--bc-r-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform var(--bc-t-release) var(--bc-ease-bounce);
  position: relative;
}

.bc-opp-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 var(--bc-press) 0 var(--bc-ink), 0 8px 18px rgba(0,0,0,0.2);
}

.bc-opp-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.bc-opp-name {
  font-size: 15px;
  font-weight: 900;
  color: #78350f;
}

.bc-opp-meta {
  font-size: 12px;
  color: var(--bc-paper-ink-soft);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.bc-opp-btn {
  margin-top: 6px;
  background-image: linear-gradient(180deg, var(--bc-gold-hi) 0%, var(--bc-gold) 48%, var(--bc-gold-lo) 100%);
  border: var(--bc-ol-thin) solid var(--bc-ink);
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink);
  border-radius: var(--bc-r-sm);
  padding: 8px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 900;
  color: var(--bc-text);
  text-shadow: var(--bc-text-outline);
  cursor: pointer;
  transition: transform 0.08s ease;
}

.bc-opp-btn:active {
  transform: translateY(var(--bc-press-sm));
  box-shadow: 0 0 0 var(--bc-ink);
}

/* 1v1 Battle View */
.bc-duel-stage {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(var(--bc-ink-rgb), 0.08);
  border: var(--bc-ol) solid var(--bc-ink);
  border-radius: var(--bc-r-lg);
  padding: 20px 24px;
  position: relative;
  box-shadow: inset 0 2px 6px rgba(0,0,0,0.15);
}

.bc-combatant-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 200px;
}

.bc-combatant-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: var(--bc-ol-thick) solid var(--bc-ink);
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  background: linear-gradient(180deg, var(--bc-gold-hi) 0%, var(--bc-gold) 100%);
}

.bc-hp-bar {
  width: 100%;
  height: 14px;
  background: #1e1528;
  border: var(--bc-ol-thin) solid var(--bc-ink);
  border-radius: var(--bc-r-pill);
  overflow: hidden;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.5);
}

.bc-hp-fill {
  height: 100%;
  background: linear-gradient(90deg, #10b981 0%, #34d399 100%);
  width: 100%;
  transition: width 0.3s ease-out;
}

.bc-hp-fill.enemy {
  background: linear-gradient(90deg, #ef4444 0%, #f87171 100%);
}

.bc-vs-badge {
  font-size: 28px;
  font-weight: 900;
  color: #78350f;
  text-shadow: 0 1px 0 rgba(255,255,255,0.8);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.bc-duel-log {
  background: #140f1c;
  border: var(--bc-ol-thin) solid var(--bc-ink);
  border-radius: var(--bc-r-md);
  height: 140px;
  overflow-y: auto;
  padding: 10px 14px;
  font-size: 12px;
  font-family: var(--font-ui);
  color: #f3eedf;
  display: flex;
  flex-direction: column;
  gap: 4px;
  scrollbar-width: thin;
  scrollbar-color: var(--bc-leather) transparent;
}

/* Dungeon Portal Selection Cards */
.bc-dungeon-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 16px;
}

.bc-dungeon-card {
  background: linear-gradient(180deg, #fffcf5 0%, #f7ebd1 100%);
  border: var(--bc-ol-thin) solid rgba(var(--bc-ink-rgb), 0.4);
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink);
  border-radius: var(--bc-r-md);
  padding: 14px;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.bc-dungeon-card:hover {
  transform: translateY(-2px);
  border-color: var(--bc-ink);
  box-shadow: 0 var(--bc-press) 0 var(--bc-ink);
}

.bc-dungeon-card.selected {
  border: var(--bc-ol-thick) solid #4338ca;
  background: linear-gradient(180deg, #f0f4ff 0%, #e0e7ff 100%);
  box-shadow: 0 var(--bc-press) 0 #1e1b4b, 0 0 14px rgba(99, 102, 241, 0.4);
}

.bc-dungeon-card .title {
  font-size: 15px;
  font-weight: 900;
  color: #1e1b4b;
  display: flex;
  align-items: center;
  gap: 6px;
}

.bc-dungeon-card .desc {
  font-size: 11px;
  color: var(--bc-paper-ink-soft);
  line-height: 1.4;
}

.bc-dungeon-card .meta {
  font-size: 11px;
  color: #78350f;
  font-weight: 800;
  margin-top: auto;
}

/* Party Waiting Room (Character Pedestals) */
.bc-party-slots-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.bc-party-slot {
  background: rgba(var(--bc-ink-rgb), 0.05);
  border: 2px dashed rgba(var(--bc-ink-rgb), 0.3);
  border-radius: var(--bc-r-md);
  padding: 14px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  min-height: 130px;
  justify-content: center;
}

.bc-party-slot.occupied {
  border: var(--bc-ol) solid var(--bc-ink);
  border-style: solid;
  background: linear-gradient(180deg, #fffcf5 0%, #fbf0d8 100%);
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink);
}

/* Live Dungeon Boss Fight Strip */
.bc-boss-strip {
  background: #25121b;
  border: var(--bc-ol) solid #7f1d1d;
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink);
  border-radius: var(--bc-r-md);
  padding: 12px 18px;
  margin-bottom: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bc-boss-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 900;
  color: #fca5a5;
  font-size: 16px;
}

.bc-boss-hp {
  height: 16px;
  background: #0f0a0d;
  border-radius: var(--bc-r-pill);
  overflow: hidden;
  border: var(--bc-ol-thin) solid var(--bc-ink);
}

.bc-boss-hp-fill {
  height: 100%;
  background: linear-gradient(90deg, #dc2626 0%, #f87171 100%);
  width: 100%;
  transition: width 0.2s ease;
}

.bc-action-deck {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.bc-action-btn {
  flex: 1;
  padding: 10px;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 900;
  border-radius: var(--bc-r-sm);
  cursor: pointer;
  border: var(--bc-ol) solid var(--bc-ink);
  box-shadow: 0 var(--bc-press-sm) 0 var(--bc-ink);
  color: var(--bc-text);
  text-shadow: var(--bc-text-outline);
  transition: transform 0.08s ease;
}

.bc-action-btn:active {
  transform: translateY(var(--bc-press-sm));
  box-shadow: 0 0 0 var(--bc-ink);
}

.bc-btn-atk {
  background-image: linear-gradient(180deg, var(--bc-red-hi) 0%, var(--bc-red) 50%, var(--bc-red-lo) 100%);
}
.bc-btn-skill {
  background-image: linear-gradient(180deg, var(--bc-blue-hi) 0%, var(--bc-blue) 50%, var(--bc-blue-lo) 100%);
}
.bc-btn-dodge {
  background-image: linear-gradient(180deg, var(--bc-green-hi) 0%, var(--bc-green) 50%, var(--bc-green-lo) 100%);
}

/* ==========================================================================
   8. Town Co-Presence & Roaming Layer (主城多人同屏)
   ========================================================================== */
#bc-town-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 55;
  overflow: hidden;
  user-select: none;
}

.bc-town-player {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  pointer-events: auto;
  cursor: pointer;
  transform: translate3d(-9999px, -9999px, 0);
  transition: opacity 0.2s ease;
}

.bc-town-player:hover .bc-town-avatar {
  transform: scale(1.08);
  box-shadow: 0 0 16px rgba(255, 233, 120, 0.8), 0 4px 12px rgba(0,0,0,0.9);
  border-color: var(--bc-gold-hi);
}

.bc-town-shadow {
  position: absolute;
  bottom: -4px;
  left: -28px;
  width: 56px;
  height: 16px;
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 72%);
  pointer-events: none;
}

.bc-town-token-wrap {
  position: absolute;
  bottom: 0;
  left: -28px;
  width: 56px;
  height: 56px;
}

.bc-town-avatar {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  object-fit: cover;
  border: 2.5px solid var(--bc-gold);
  background: #1e1713;
  box-shadow: 0 0 8px rgba(0,0,0,0.6), inset 0 0 6px rgba(0,0,0,0.8);
  display: block;
  transition: transform 0.15s cubic-bezier(0.18, 0.89, 0.32, 1.28), border-color 0.15s ease, box-shadow 0.15s ease;
}

.bc-town-badge {
  position: absolute;
  right: -2px;
  bottom: -2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.bc-town-badge.warrior { background: #e8962a; }
.bc-town-badge.mage { background: #8b5cf6; }
.bc-town-badge.ranger { background: #10b981; }

.bc-town-nameplate {
  position: absolute;
  bottom: 0px;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  padding: 3px 8px;
  border-radius: var(--bc-r-sm);
  background: linear-gradient(180deg, rgba(30, 22, 14, 0.94) 0%, rgba(15, 10, 6, 0.98) 100%);
  border: var(--bc-ol-thin) solid var(--bc-gold);
  box-shadow: 0 4px 10px rgba(0,0,0,0.6);
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  pointer-events: auto;
  transition: transform 0.1s ease, border-color 0.1s ease;
}

.bc-town-nameplate:hover {
  transform: translateX(-50%) scale(1.06);
  border-color: var(--bc-gold-hi);
}

.bc-town-body-hit {
  position: absolute;
  top: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 46px;
  height: 56px;
  cursor: pointer;
  pointer-events: auto;
  border-radius: 20px;
  background: transparent;
}

.bc-town-tier {
  color: var(--bc-gold-hi);
  font-size: 10.5px;
}

.bc-town-name {
  color: #fff;
}

.bc-town-level {
  color: #93c5fd;
  font-size: 10px;
}

.bc-town-bubble {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  min-width: 70px;
  max-width: 200px;
  padding: 6px 10px;
  background: linear-gradient(180deg, #fffcf0 0%, #f4e8cc 100%);
  border: var(--bc-ol-thin) solid #5c4732;
  border-radius: 8px;
  color: #2b1f14;
  font-size: 11.5px;
  font-weight: 700;
  line-height: 1.35;
  box-shadow: 0 6px 16px rgba(0,0,0,0.4);
  pointer-events: none;
  word-break: break-all;
  animation: bcBubblePop 0.22s var(--bc-ease-pop);
}

.bc-town-bubble::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  border-width: 6px 5px 0;
  border-style: solid;
  border-color: #5c4732 transparent transparent;
}

@keyframes bcBubblePop {
  0% { opacity: 0; transform: translateX(-50%) scale(0.7) translateY(8px); }
  100% { opacity: 1; transform: translateX(-50%) scale(1) translateY(0); }
}

.bc-town-popmenu {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  min-width: 140px;
  padding: 6px;
  background: linear-gradient(180deg, #2b1e16 0%, #170f0a 100%);
  border: var(--bc-ol-thin) solid var(--bc-gold);
  border-radius: var(--bc-r-md);
  box-shadow: 0 10px 30px rgba(0,0,0,0.85);
  display: flex;
  flex-direction: column;
  gap: 4px;
  animation: bcMenuIn 0.15s ease-out;
}

@keyframes bcMenuIn {
  from { opacity: 0; transform: translateX(-50%) scale(0.92); }
  to { opacity: 1; transform: translateX(-50%) scale(1); }
}

.bc-town-menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 5px;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  text-align: left;
  transition: all 0.12s ease;
}

.bc-town-menu-item:hover {
  background: var(--bc-gold);
  color: var(--bc-ink);
  border-color: var(--bc-gold-hi);
  transform: translateX(2px);
}

/* Wardrobe Modal & Dock Button */
.bc-btn-wardrobe {
  background: linear-gradient(180deg, #8b5cf6 0%, #6d28d9 100%) !important;
  border-color: #c4b5fd !important;
}

.bc-btn-wardrobe:hover {
  filter: brightness(1.15);
  box-shadow: 0 0 16px rgba(139, 92, 246, 0.6);
}

.bc-wardrobe-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(136px, 1fr));
  gap: 10px;
  max-height: 400px;
  overflow-y: auto;
  padding: 4px;
}

.bc-wardrobe-card {
  background: linear-gradient(180deg, #fffcf5 0%, #f4ede0 100%);
  border: 1.5px solid #d4c0a5;
  border-radius: 8px;
  padding: 10px 8px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: 0 2px 5px rgba(0,0,0,0.06);
  user-select: none;
}

.bc-wardrobe-card:hover {
  transform: translateY(-2px);
  border-color: #b45309;
  box-shadow: 0 4px 10px rgba(180,83,9,0.22);
}

.bc-wardrobe-card.is-active {
  background: linear-gradient(180deg, #fef3c7 0%, #fde68a 100%);
  border-color: #b45309;
  box-shadow: 0 0 0 2px rgba(180,83,9,0.35);
}

.bc-wardrobe-icon {
  font-size: 28px;
  margin-bottom: 4px;
  line-height: 1;
}

.bc-wardrobe-name {
  font-size: 12px;
  font-weight: 800;
  color: #451a03;
  margin-bottom: 4px;
}

.bc-wardrobe-desc {
  font-size: 10px;
  color: #78350f;
  line-height: 1.35;
}

.bc-notification-pill {
  position: fixed;
  top: 70px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(180deg, #2b1e16 0%, #170f0a 100%);
  border: 1.5px solid var(--bc-gold);
  color: var(--bc-gold-hi);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(0,0,0,0.6);
  z-index: 10000;
  pointer-events: none;
  animation: bcPillFade 2.4s ease forwards;
}

@keyframes bcPillFade {
  0% { opacity: 0; transform: translate(-50%, -10px); }
  15% { opacity: 1; transform: translate(-50%, 0); }
  80% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, -10px); }
}

/* -------------------------------------------------------------------------
   13. Responsive Adaptations (Mobile & Small Viewports)
   ------------------------------------------------------------------------- */
@media (max-width: 900px) {
  #bc-bottom-dock {
    gap: 6px;
    right: 8px;
    bottom: 8px;
  }
  .bc-dock-btn {
    min-height: 34px;
    padding: 0 10px;
    font-size: 11px;
    gap: 4px;
  }
  #bc-chat-box {
    width: 260px;
    height: 170px;
    left: 8px;
    bottom: 8px;
  }
}

@media (max-width: 640px) {
  #bc-bottom-dock {
    flex-wrap: wrap;
    justify-content: flex-end;
    max-width: 65%;
  }
  #bc-chat-box {
    width: calc(100vw - 16px);
    max-width: 320px;
    bottom: 60px;
  }
}