/* ============================================================
   CAMBIO — Sophisticated Minimalism + Glassmorphic Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ── Design Tokens ── */
:root {
  /* Surfaces */
  --surface:               #111318;
  --surface-dim:           #111318;
  --surface-bright:        #37393e;
  --surface-cnt-lowest:    #0c0e12;
  --surface-cnt-low:       #1a1c20;
  --surface-cnt:           #1e2024;
  --surface-cnt-high:      #282a2e;
  --surface-cnt-highest:   #333539;
  --on-surface:            #e2e2e8;
  --on-surface-var:        #c3c5d9;
  --inverse-surface:       #e2e2e8;
  --inverse-on-surface:    #2f3035;
  --outline:               #8d90a2;
  --outline-var:           #434656;

  /* Brand */
  --primary:               #b7c4ff;
  --on-primary:            #002682;
  --primary-container:     #0052ff;
  --on-primary-container:  #dfe3ff;
  --inverse-primary:       #004ced;
  --secondary:             #64d5f4;
  --on-secondary:          #003641;
  --secondary-container:   #109ebb;
  --on-secondary-container:#002e39;
  --tertiary:              #e9c400;
  --on-tertiary:           #3a3000;
  --tertiary-container:    #c9a900;

  /* Status */
  --error:                 #ffb4ab;
  --on-error:              #690005;
  --error-container:       #93000a;
  --on-error-container:    #ffdad6;

  /* Background */
  --background:            #0a0c10;
  --on-background:         #e2e2e8;

  /* Glass layers */
  --glass-1-bg:            rgba(255,255,255,0.07);
  --glass-1-border:        rgba(255,255,255,0.12);
  --glass-1-blur:          20px;
  --glass-2-bg:            rgba(255,255,255,0.12);
  --glass-2-border:        rgba(255,255,255,0.18);
  --glass-2-blur:          40px;

  /* Shape */
  --r-sm:   4px;
  --r-md:   12px;
  --r-lg:   16px;
  --r-xl:   24px;
  --r-full: 9999px;

  /* Spacing */
  --sp-1:   8px;
  --sp-2:   16px;
  --sp-3:   24px;
  --sp-4:   32px;
  --sp-6:   48px;
}

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

/* ── Base ── */
html {
  height: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background-color: var(--background);
  color: var(--on-surface);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  position: relative;
}

/* ── Animated background blobs ── */
body::before,
body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  filter: blur(150px);
  animation: blobDrift 18s ease-in-out infinite alternate;
}

body::before {
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(0,82,255,0.28) 0%, transparent 70%);
  top: -140px;
  left: -100px;
  animation-duration: 20s;
}

body::after {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(100,213,244,0.20) 0%, transparent 70%);
  bottom: -120px;
  right: -80px;
  animation-duration: 24s;
  animation-delay: -8s;
}

@keyframes blobDrift {
  0%   { transform: translate(0, 0) scale(1); }
  33%  { transform: translate(40px, -30px) scale(1.08); }
  66%  { transform: translate(-20px, 50px) scale(0.95); }
  100% { transform: translate(60px, 20px) scale(1.05); }
}

/* tertiary blob injected via JS-free pseudo on #app */
#app::before {
  content: '';
  position: fixed;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(233,196,0,0.12) 0%, transparent 70%);
  filter: blur(120px);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 0;
  animation: blobDrift 28s ease-in-out infinite alternate;
}

/* ── App Container ── */
#app {
  position: relative;
  z-index: 1;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: var(--sp-1);
  max-width: 1200px;
  margin: 0 auto;
}

/* ── Typography ── */
h1 {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--on-surface);
}

h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--on-surface-var);
}

h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--on-surface-var);
}

/* Mono labels — currency codes, rates, timestamps */
.mono {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--on-surface-var);
}

/* ── Glass Surfaces ── */
.glass-1 {
  background: var(--glass-1-bg);
  backdrop-filter: blur(var(--glass-1-blur));
  -webkit-backdrop-filter: blur(var(--glass-1-blur));
  border: 1px solid var(--glass-1-border);
  border-radius: var(--r-lg);
}

.glass-2 {
  background: var(--glass-2-bg);
  backdrop-filter: blur(var(--glass-2-blur));
  -webkit-backdrop-filter: blur(var(--glass-2-blur));
  border: 1px solid var(--glass-2-border);
  border-radius: var(--r-lg);
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.04) inset,
    0 8px 32px rgba(0,0,0,0.4);
}

/* ── Header ── */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px var(--sp-2);
  margin-bottom: var(--sp-1);
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--r-md);
}

/* ── Buttons ── */
button {
  font-family: 'Inter', sans-serif;
  padding: 9px 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  background: var(--glass-1-bg);
  color: var(--on-surface);
  border: 1px solid var(--glass-1-border);
  border-radius: var(--r-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

button:hover {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.22);
  box-shadow: 0 0 0 3px rgba(183,196,255,0.10);
}

button:active {
  background: rgba(255,255,255,0.22);
}

button:disabled {
  background: rgba(255,255,255,0.03);
  border-color: rgba(255,255,255,0.06);
  color: var(--outline);
  cursor: not-allowed;
}

/* Primary action pill button */
.primary-btn,
#cambio-btn,
#start-game-btn,
#login-btn,
#signup-btn,
#create-room-btn,
#join-room-btn,
#back-to-lobby-btn {
  background: linear-gradient(135deg, var(--primary-container) 0%, #003acc 100%);
  color: #fff;
  border: none;
  box-shadow: 0 0 24px rgba(0,82,255,0.35), 0 2px 8px rgba(0,0,0,0.4);
}

.primary-btn:hover,
#login-btn:hover,
#signup-btn:hover,
#create-room-btn:hover,
#join-room-btn:hover,
#back-to-lobby-btn:hover,
#start-game-btn:hover {
  background: linear-gradient(135deg, #0060ff 0%, #004aff 100%);
  box-shadow: 0 0 32px rgba(0,82,255,0.55), 0 2px 12px rgba(0,0,0,0.5);
}

.secondary-btn {
  background: transparent;
  color: var(--on-surface-var);
  border: 1px solid var(--outline-var);
}

.secondary-btn:hover {
  background: rgba(255,255,255,0.07);
  color: var(--on-surface);
  border-color: var(--outline);
}

/* Cambio call — red danger pill */
#cambio-btn {
  background: linear-gradient(135deg, #c0392b 0%, #96231a 100%);
  box-shadow: 0 0 20px rgba(192,57,43,0.4);
  color: #fff;
  border: none;
}

#cambio-btn:hover {
  background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
  box-shadow: 0 0 32px rgba(231,76,60,0.55);
}

#simulate-btn {
  background: rgba(43,108,176,0.25);
  color: var(--primary);
  border: 1px solid rgba(43,108,176,0.4);
}

/* Sign out buttons */
#signout-btn,
#admin-signout-btn {
  background: rgba(255,60,60,0.15);
  color: var(--error);
  border: 1px solid rgba(255,60,60,0.25);
  font-size: 11px;
  padding: 5px 14px;
}

#signout-btn:hover,
#admin-signout-btn:hover {
  background: rgba(255,60,60,0.28);
  border-color: rgba(255,60,60,0.45);
}

/* ── Inputs ── */
input {
  font-family: 'Inter', sans-serif;
  width: 100%;
  padding: 10px 0;
  font-size: 14px;
  background: transparent;
  color: var(--on-surface);
  border: none;
  border-bottom: 1px solid rgba(255,255,255,0.20);
  border-radius: 0;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus {
  border-bottom-color: var(--primary-container);
  box-shadow: 0 4px 0 -3px var(--primary-container);
}

input::placeholder {
  color: var(--outline);
  font-weight: 400;
}

/* ── Loading ── */
#loading {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--outline);
  text-transform: uppercase;
  text-align: center;
  padding: var(--sp-4);
  animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 1; }
}

/* ── Lobby / Auth Boxes ── */
.lobby-box,
#waiting-room-section,
#results-section {
  background: var(--glass-1-bg);
  backdrop-filter: blur(var(--glass-1-blur));
  -webkit-backdrop-filter: blur(var(--glass-1-blur));
  border: 1px solid var(--glass-1-border);
  border-radius: var(--r-xl);
  padding: var(--sp-4);
  margin: auto;
  width: 100%;
  max-width: 400px;
  text-align: center;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
}

.lobby-box h2,
#waiting-room-section h2,
#results-section h2 {
  margin-bottom: var(--sp-3);
}

.lobby-box input {
  margin-bottom: var(--sp-3);
}

.lobby-box button {
  margin: 4px;
}

.join-area {
  display: flex;
  gap: var(--sp-1);
  justify-content: center;
  margin-top: var(--sp-2);
  align-items: flex-end;
}

.join-area input {
  flex: 1;
  text-transform: uppercase;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.15em;
  font-size: 18px;
  text-align: center;
}

/* ── Auth Error ── */
#auth-error {
  font-size: 12px;
  color: var(--error);
  margin-top: var(--sp-1);
  font-family: 'JetBrains Mono', monospace;
  min-height: 18px;
}

/* ── Lists (lobby player list, rules) ── */
ul {
  list-style: none;
  margin-bottom: var(--sp-2);
}

li {
  font-size: 14px;
  padding: 7px var(--sp-1);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  color: var(--on-surface-var);
}

/* ── Game Board ── */
#game-board-section {
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* ── Top Bar ── */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px var(--sp-2);
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: var(--r-md);
  margin-bottom: var(--sp-2);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--on-surface-var);
  text-transform: uppercase;
}

.top-bar > div {
  display: flex;
  gap: 8px;
  align-items: center;
}

/* ── Game Area ── */
#game-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  min-height: 0;
}

/* ── Center Area (Deck & Discard) ── */
#center-area {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-2);
  position: relative;
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--r-lg);
  margin: 4px 0;
}

.deck-container,
.discard-container,
.drawn-card-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
}

.deck-count,
.discard-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--outline);
}

/* ── Action Prompt & Stack Alert ── */
.action-prompt {
  position: absolute;
  top: -38px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(221,107,32,0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #fff;
  padding: 4px 14px;
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid rgba(255,255,255,0.2);
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(221,107,32,0.4);
}

.stack-alert {
  position: absolute;
  bottom: -36px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(214,158,46,0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #000;
  padding: 4px 14px;
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: 800;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(214,158,46,0.5);
}

.hidden {
  display: none !important;
}

/* ── Cards ── */
.card {
  width: 52px;
  height: 74px;
  background: #ffffff;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--r-sm);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  user-select: none;
  position: relative;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.5);
  border-color: rgba(183,196,255,0.6);
}

.card-back {
  background-image: url('assets/card.svg');
  background-size: 100% 100%;
  background-position: center;
  background-repeat: no-repeat;
  width: 100%;
  height: 100%;
  border-radius: 3px;
  color: transparent;
}

.deck-card {
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.deck-card:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 24px rgba(0,82,255,0.35);
}

.card.red  { color: #dc2626; background: #ffffff; }
.card.black{ color: #1a1a2e; background: #ffffff; }

.empty-slot {
  background: rgba(255,255,255,0.03);
  border: 1.5px dashed rgba(255,255,255,0.18);
  cursor: default;
  box-shadow: none;
}

.empty-slot:hover {
  transform: none;
  box-shadow: none;
  border-color: rgba(255,255,255,0.18);
}

.card-value {
  position: absolute;
  top: 3px;
  left: 5px;
  font-size: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
}

.card-suit {
  font-size: 22px;
  line-height: 1;
}

.card-bottom-value {
  position: absolute;
  bottom: 3px;
  right: 5px;
  font-size: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  transform: rotate(180deg);
}

/* ── Chat Panel ── */
.chat-toggle-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  background: var(--glass-1-bg);
  backdrop-filter: blur(var(--glass-1-blur));
  -webkit-backdrop-filter: blur(var(--glass-1-blur));
  border: 1px solid var(--glass-1-border);
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  transition: transform 0.2s ease;
}
.chat-toggle-btn:hover {
  transform: scale(1.1);
}

.chat-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 320px;
  height: 100%;
  max-width: 100vw;
  background: rgba(17, 19, 24, 0.85);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border-left: 1px solid var(--glass-1-border);
  z-index: 150;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1);
  box-shadow: -8px 0 24px rgba(0,0,0,0.5);
}

.chat-panel.hidden-slide {
  transform: translateX(100%);
}

.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.chat-header h3 {
  color: var(--primary);
  margin: 0;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.12) transparent;
}

.chat-message {
  font-size: 13px;
  background: rgba(255,255,255,0.05);
  padding: 8px 12px;
  border-radius: var(--r-md);
  align-self: flex-start;
  max-width: 85%;
  word-break: break-word;
}

.chat-message.self {
  background: rgba(0,82,255,0.2);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}
.chat-message.other {
  border-bottom-left-radius: 4px;
}

.chat-message strong {
  display: block;
  font-size: 11px;
  color: var(--outline);
  margin-bottom: 3px;
}
.chat-message.self strong {
  color: var(--primary);
}

.chat-input-area {
  display: flex;
  padding: 12px;
  border-top: 1px solid rgba(255,255,255,0.08);
  gap: 8px;
}

.chat-input-area input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r-full);
  background: rgba(0,0,0,0.2);
}

.chat-input-area button {
  padding: 8px 16px;
}

/* ── Animations ── */
.flying-card {
  position: fixed;
  z-index: 9999;
  transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
  pointer-events: none;
  box-shadow: 0 12px 24px rgba(0,0,0,0.6);
}

/* ── Interactive Card States ── */
.selectable {
  border: 2px solid var(--tertiary) !important;
  box-shadow: 0 0 12px rgba(233,196,0,0.4) !important;
  animation: selectPulse 1.2s ease-in-out infinite;
}

@keyframes selectPulse {
  0%, 100% { box-shadow: 0 0 12px rgba(233,196,0,0.35); }
  50%       { box-shadow: 0 0 22px rgba(233,196,0,0.7); }
}

.stack-target {
  border: 2px solid var(--secondary) !important;
  box-shadow: 0 0 14px rgba(100,213,244,0.45) !important;
}

/* ── Opponents Area ── */
#opponents-container {
  display: flex;
  justify-content: center;
  gap: var(--sp-1);
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.opponent {
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: var(--r-lg);
  padding: 6px var(--sp-1);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.opponent.active-turn {
  border-color: var(--primary);
  background: rgba(183,196,255,0.08);
  box-shadow: 0 0 16px rgba(183,196,255,0.15);
}

.opponent h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--outline);
  text-transform: uppercase;
}

.opponent .player-cards-grid {
  gap: 3px;
  margin-top: 2px;
}

.opponent .card {
  width: 34px;
  height: 48px;
  border-radius: 3px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.35);
}

.opponent .card:hover {
  transform: translateY(-2px);
}

/* ── Player Cards Grid ── */
.player-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 5px;
  margin-top: 4px;
}

.local-player-layout {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-top: 4px;
}

/* ── Local Player Area ── */
#local-player-container {
  background: rgba(183,196,255,0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(183,196,255,0.12);
  border-radius: var(--r-lg);
  padding: 8px var(--sp-1);
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: auto;
  margin-bottom: 2px;
  box-shadow: 0 0 0 1px rgba(183,196,255,0.04) inset;
}

#local-player-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
}

.player-status {
  margin-top: 5px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  color: var(--tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ── Drawn Card Container ── */
.drawn-card-container {
  position: relative;
}

.drawn-card-container .card {
  border: 2px solid var(--secondary);
  box-shadow: 0 0 16px rgba(100,213,244,0.35);
}

/* ── Game Messages ── */
#game-messages {
  text-align: center;
  padding: 7px var(--sp-2);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--on-surface-var);
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--r-md);
  margin-top: 6px;
}

/* ── Modals ── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal-content {
  background: rgba(30,32,36,0.92);
  backdrop-filter: blur(var(--glass-2-blur));
  -webkit-backdrop-filter: blur(var(--glass-2-blur));
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--r-xl);
  padding: var(--sp-4);
  width: 90%;
  max-width: 600px;
  position: relative;
  max-height: 82vh;
  display: flex;
  flex-direction: column;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.05) inset,
    0 24px 64px rgba(0,0,0,0.6),
    0 0 40px rgba(0,82,255,0.08);
  animation: slideUp 0.25s cubic-bezier(0.34,1.56,0.64,1);
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.close-btn {
  position: absolute;
  right: var(--sp-2);
  top: var(--sp-2);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 400;
  color: var(--outline);
  cursor: pointer;
  border-radius: 50%;
  transition: background 0.15s ease, color 0.15s ease;
}

.close-btn:hover {
  background: rgba(255,255,255,0.09);
  color: var(--on-surface);
}

.rules-body {
  overflow-y: auto;
  margin-top: var(--sp-2);
  padding-right: 8px;
  font-size: 14px;
  line-height: 1.65;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.12) transparent;
}

.rules-body::-webkit-scrollbar { width: 5px; }
.rules-body::-webkit-scrollbar-track { background: transparent; }
.rules-body::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 3px; }

.rules-body h3 {
  margin-top: var(--sp-2);
  margin-bottom: 6px;
  padding-bottom: 5px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  color: var(--primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.rules-body p,
.rules-body ul,
.rules-body ol {
  margin-bottom: var(--sp-1);
  color: var(--on-surface-var);
  font-size: 13px;
}

.rules-body ul,
.rules-body ol {
  padding-left: var(--sp-3);
}

.rules-body li {
  border-bottom: none;
  padding: 3px 0;
  font-size: 13px;
}

.rules-body strong {
  color: var(--on-surface);
  font-weight: 600;
}

/* ── Footer ── */
.app-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px var(--sp-1);
  margin-top: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.2);
  border-top: 1px solid rgba(255,255,255,0.05);
}

/* ── Waiting Room ── */
#waiting-room-section {
  max-width: 440px;
}

#waiting-room-section h2 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--primary);
  text-transform: uppercase;
}

#waiting-message {
  color: var(--outline);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: var(--sp-1);
  animation: pulse 2s ease-in-out infinite;
}

/* ── Results Section ── */
#results-section {
  max-width: 440px;
}

#results-list {
  margin: var(--sp-2) 0;
  text-align: left;
}

/* ── Admin Panel ── */
#admin-section .lobby-box {
  max-width: 600px;
}

#admin-section h2 {
  color: var(--tertiary);
}

#admin-rooms-list {
  max-height: 300px;
  overflow-y: auto;
  padding-right: 5px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.admin-room-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 10px var(--sp-2);
  margin-bottom: 8px;
  border-radius: var(--r-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.15s ease;
}

.admin-room-item:hover {
  background: rgba(255,255,255,0.07);
}

.admin-room-info {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--on-surface-var);
  letter-spacing: 0.04em;
}

.admin-room-players {
  font-size: 11px;
  color: var(--outline);
  margin-top: 2px;
}

/* ── Multiple Rooms Section ── */
#multiple-rooms-section .lobby-box h2 {
  color: var(--error);
}

#multiple-rooms-section p {
  color: var(--on-surface-var);
  font-size: 13px;
  margin-bottom: var(--sp-2);
}

/* ── Admin Ended Overlay ── */
#admin-ended-overlay .modal-content {
  max-width: 400px;
  text-align: center;
}

#admin-ended-overlay h2 {
  color: var(--error);
  margin-bottom: var(--sp-2);
}

#admin-ended-overlay p {
  color: var(--on-surface-var);
  margin-bottom: var(--sp-3);
  font-size: 14px;
}

/* ── Chip / Status Badges ── */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: var(--r-full);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.chip-up   { background: rgba(52,211,153,0.12); color: #34d399; }
.chip-down { background: rgba(255,107,107,0.12); color: var(--error); }

/* ── Responsive tweaks ── */
@media (max-width: 480px) {
  #app { padding: 6px; }

  .app-header { padding: 5px 10px; }
  h1 { font-size: 20px; }

  .card { width: 46px; height: 65px; }
  .opponent .card { width: 30px; height: 42px; }

  .top-bar { padding: 6px 10px; font-size: 10px; }

  #center-area { gap: 10px; padding: 6px 10px; }

  .lobby-box,
  #waiting-room-section,
  #results-section {
    padding: var(--sp-3) var(--sp-2);
    border-radius: var(--r-lg);
  }

  .modal-content { padding: var(--sp-3); border-radius: var(--r-lg); }
}