/* ========================================================================
   LOBBY + JOIN + TUTORIAL
   ======================================================================== */

#join {
  justify-content: center;
  align-items: center;
  padding: var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

#join .panel {
  width: 100%;
  max-width: 400px;
  padding: var(--spacing-xl);
  background: var(--white);
  border: 3px solid var(--primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  animation: bounceIn 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  position: relative;
  z-index: 2;
}

#join h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 900;
  letter-spacing: 2px;
}

.subtitle {
  font-size: 1rem;
  color: var(--secondary);
  margin-bottom: var(--spacing-lg);
  font-weight: 600;
  letter-spacing: 0.5px;
}

.tagline {
  font-size: 0.95rem;
  color: #666;
  margin-bottom: var(--spacing-lg);
  line-height: 1.5;
}

.startup-bootstrap-panel {
  position: fixed;
  inset: 0;
  z-index: 12000;
  padding: max(14px, env(safe-area-inset-top, 0px)) max(12px, env(safe-area-inset-right, 0px)) max(14px, env(safe-area-inset-bottom, 0px)) max(12px, env(safe-area-inset-left, 0px));
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 193, 7, 0.14), transparent 42%),
    radial-gradient(circle at 85% 18%, rgba(93, 224, 255, 0.14), transparent 46%),
    radial-gradient(circle at 50% 100%, rgba(76, 175, 80, 0.12), transparent 52%),
    linear-gradient(180deg, rgba(8, 12, 19, 0.95), rgba(12, 18, 27, 0.97));
  backdrop-filter: blur(12px);
}

.startup-bootstrap-panel[hidden] {
  display: none !important;
}

.startup-bootstrap-card {
  width: min(560px, calc(100vw - 24px));
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background:
    radial-gradient(circle at 100% 0%, rgba(255, 193, 7, 0.09), transparent 52%),
    radial-gradient(circle at 0% 100%, rgba(0, 188, 212, 0.09), transparent 54%),
    linear-gradient(165deg, rgba(18, 24, 35, 0.94), rgba(11, 16, 26, 0.96));
  box-shadow: 0 24px 44px rgba(0, 0, 0, 0.34), inset 0 0 0 1px rgba(255, 255, 255, 0.03);
  padding: 16px 16px 14px;
  display: grid;
  gap: 8px;
}

.startup-bootstrap-brand {
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #ffffff;
  text-shadow: 0 4px 14px rgba(0, 188, 212, 0.2);
}

.startup-bootstrap-kicker {
  margin-top: -2px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(183, 214, 240, 0.86);
}

.startup-bootstrap-panel.is-done {
  border-color: rgba(76, 175, 80, 0.2);
}

.startup-bootstrap-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: #dff4ff;
}

.startup-bootstrap-head strong {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.startup-bootstrap-head span {
  font-size: 0.68rem;
  color: rgba(183, 214, 240, 0.88);
  font-weight: 700;
}

.startup-bootstrap-panel p {
  margin: 0;
  color: rgba(206, 226, 243, 0.88);
  font-size: 0.78rem;
  line-height: 1.35;
}

.startup-bootstrap-bar {
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.startup-bootstrap-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #2ac3d6, #5de0ff 45%, #4caf50);
  box-shadow: 0 0 18px rgba(93, 224, 255, 0.28);
  transition: width 160ms ease;
}

.startup-bootstrap-subhint {
  margin-top: 1px;
  font-size: 0.68rem !important;
  color: rgba(173, 200, 226, 0.86) !important;
}

.startup-bootstrap-detail {
  font-size: 0.72rem !important;
  color: rgba(226, 239, 253, 0.9) !important;
  min-height: 1.05rem;
}

.startup-bootstrap-steps {
  list-style: none;
  margin: 2px 0 0;
  padding: 0;
  display: grid;
  gap: 4px;
  max-height: min(38vh, 180px);
  overflow: auto;
}

.startup-bootstrap-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 8px;
  align-items: center;
  padding: 5px 7px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.02);
}

.startup-bootstrap-step-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: rgba(224, 240, 255, 0.92);
  background: rgba(255, 255, 255, 0.08);
}

.startup-bootstrap-step-label {
  font-size: 0.72rem;
  color: rgba(225, 238, 252, 0.92);
}

.startup-bootstrap-step-detail {
  grid-column: 2;
  font-size: 0.63rem;
  color: rgba(181, 207, 231, 0.84);
}

.startup-bootstrap-step.is-active {
  border-color: rgba(93, 224, 255, 0.25);
  background: rgba(93, 224, 255, 0.06);
}

.startup-bootstrap-step.is-active .startup-bootstrap-step-badge {
  color: #06131b;
  background: linear-gradient(90deg, #2ac3d6, #5de0ff);
}

.startup-bootstrap-step.is-done .startup-bootstrap-step-badge {
  color: #03170a;
  background: linear-gradient(90deg, #73d978, #4caf50);
}

.startup-bootstrap-step.is-done .startup-bootstrap-step-label {
  color: rgba(211, 238, 214, 0.94);
}

.startup-bootstrap-step.is-error {
  border-color: rgba(255, 120, 120, 0.22);
  background: rgba(255, 99, 99, 0.05);
}

.startup-bootstrap-step.is-error .startup-bootstrap-step-badge {
  color: #210505;
  background: linear-gradient(90deg, #ff8f8f, #ff6b6b);
}

body.startup-preflight-active #join .panel > *:not(#startupBootstrapPanel) {
  visibility: hidden;
  pointer-events: none;
}

body.startup-preflight-active #join .panel {
  background: rgba(255, 255, 255, 0.02);
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: none;
}

body.startup-preflight-active #installPrompt,
body.startup-preflight-active #installPromptReopen {
  display: none !important;
}

.input-group {
  margin: var(--spacing-md) 0;
  text-align: left;
}

.input-group label {
  display: block;
  font-weight: bold;
  margin-bottom: var(--spacing-sm);
  color: var(--primary);
  font-size: 0.95rem;
}

.hint {
  font-size: 0.9rem;
  color: #666;
  margin-top: var(--spacing-md);
}

.creator-credit-shell {
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background:
    radial-gradient(circle at 100% 0%, rgba(255, 193, 7, 0.12), transparent 52%),
    radial-gradient(circle at 0% 100%, rgba(3, 169, 244, 0.12), transparent 52%),
    rgba(11, 16, 28, 0.76);
  color: #eef6ff;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(10px);
}

.creator-credit-shell-join {
  position: absolute;
  right: max(10px, env(safe-area-inset-right, 0px));
  bottom: max(10px, env(safe-area-inset-bottom, 0px));
  width: min(340px, calc(100% - 20px));
  padding: 10px 10px 9px;
  z-index: 1;
}

.tutorial-creator-panel {
  margin-top: 12px;
  padding: 10px;
}

.tutorial-creator-panel .creator-credit-links {
  justify-content: center;
}

.tutorial-creator-panel .creator-credit-note {
  margin-top: 7px;
  text-align: center;
  line-height: 1.35;
  text-transform: none;
  letter-spacing: 0.02em;
}

.creator-credit-head {
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}

.creator-credit-kicker {
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(220, 236, 252, 0.78);
  font-weight: 800;
}

.creator-credit-head strong {
  font-size: 0.82rem;
  line-height: 1;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.creator-credit-links {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.creator-credit-link {
  min-height: 28px;
  border-radius: 999px;
  padding: 0 9px 0 6px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.05);
  color: #edf5ff;
  text-decoration: none;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.creator-credit-link:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.26);
  background: rgba(255, 255, 255, 0.09);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.18);
}

.creator-credit-link:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.92);
  outline-offset: 2px;
}

.creator-credit-icon {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.56rem;
  line-height: 1;
  font-weight: 900;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  flex: 0 0 18px;
}

.creator-credit-icon.is-portfolio {
  background: linear-gradient(135deg, #3aa0ff, #2b60ff);
  font-size: 0.42rem;
  letter-spacing: 0.02em;
}

.creator-credit-icon.is-github {
  background: linear-gradient(135deg, #2f3640, #111318);
}

.creator-credit-icon.is-linkedin {
  background: linear-gradient(135deg, #1f84ff, #005ecb);
}

.creator-credit-icon.is-email {
  background: linear-gradient(135deg, #ff8a47, #ff5d7a);
}

.creator-credit-note {
  margin: 8px 0 0;
  font-size: 0.62rem;
  color: rgba(219, 236, 252, 0.78);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.project-credits-drawer {
  margin-top: 8px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
  overflow: hidden;
}

.project-credits-drawer > summary {
  list-style: none;
  cursor: pointer;
  min-height: 34px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  padding: 0 10px;
  color: #edf5ff;
  font-weight: 800;
}

.project-credits-drawer > summary::-webkit-details-marker {
  display: none;
}

.project-credits-drawer > summary::after {
  content: ">";
  font-size: 0.72rem;
  opacity: 0.9;
  transition: transform 160ms ease;
}

.project-credits-drawer[open] > summary::after {
  transform: rotate(90deg);
}

.project-credits-summary-title {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  font-size: 0.72rem;
  letter-spacing: 0.02em;
}

.project-credits-summary-title > span:first-child {
  font-size: 0.82rem;
  line-height: 1;
}

.project-credits-summary-meta {
  font-size: 0.58rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(220, 236, 252, 0.72);
  white-space: nowrap;
}

.project-credits-body {
  padding: 8px 10px 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: grid;
  gap: 8px;
}

.project-credits-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
}

.project-credits-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px;
  align-items: start;
  font-size: 0.68rem;
  line-height: 1.3;
  color: #deecfb;
}

.project-credits-list li > span:first-child {
  line-height: 1;
  margin-top: 1px;
}

.project-credits-list code,
.project-credits-card code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  padding: 1px 4px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #f2f8ff;
}

.project-credits-drawer-settings {
  margin-top: 10px;
  border: 1px solid #dbe7f6;
  background:
    radial-gradient(circle at 100% 0%, rgba(255, 193, 7, 0.1), transparent 46%),
    radial-gradient(circle at 0% 100%, rgba(3, 169, 244, 0.08), transparent 46%),
    rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-sm);
}

.project-credits-drawer-settings > summary {
  color: #1b3b63;
  min-height: 42px;
}

.project-credits-drawer-settings > summary::after {
  color: #45698f;
}

.project-credits-drawer-settings .project-credits-summary-meta {
  color: #6a84a4;
}

.project-credits-drawer-settings .project-credits-body {
  border-top-color: #e0ebf8;
  gap: 10px;
}

.project-credits-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.project-credits-card {
  border-radius: 10px;
  border: 1px solid #e1ecfa;
  background: #f8fbff;
  padding: 8px;
  display: grid;
  gap: 5px;
}

.project-credits-card h4 {
  margin: 0;
  font-size: 0.76rem;
  color: #1f456f;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.project-credits-card p {
  margin: 0;
  font-size: 0.71rem;
  line-height: 1.32;
  color: #546f8d;
}

.project-credits-card-audio {
  grid-column: 1 / -1;
  background:
    radial-gradient(circle at 95% 0%, rgba(72, 138, 255, 0.12), transparent 44%),
    radial-gradient(circle at 0% 100%, rgba(0, 191, 165, 0.08), transparent 44%),
    #f8fbff;
}

.project-credits-audio-intro {
  margin: 0;
}

.audio-credit-cluster {
  display: grid;
  gap: 5px;
  margin-top: 1px;
}

.audio-credit-row {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 7px;
  align-items: start;
  border-radius: 8px;
  border: 1px solid #e2ecfb;
  background: rgba(255, 255, 255, 0.82);
  padding: 5px 6px;
}

.audio-credit-scene {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 22px;
  border-radius: 999px;
  border: 1px solid #d6e4fa;
  background: #edf4ff;
  color: #28527e;
  font-size: 0.62rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0 8px;
}

.audio-credit-main {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.audio-credit-main code {
  width: fit-content;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.audio-credit-main small {
  color: #5d7694;
  font-size: 0.64rem;
  line-height: 1.2;
}

.audio-credit-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.audio-credit-links a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.66rem;
  font-weight: 700;
  color: #1e4f7b;
  text-decoration: none;
  border-radius: 999px;
  border: 1px solid #d8e7fb;
  background: #eef5ff;
  padding: 4px 8px;
}

.audio-credit-links a:hover {
  background: #e5f0ff;
  border-color: #cfe1fb;
}

.project-credits-drawer-settings .project-credits-card code {
  background: #eef5ff;
  border-color: #dbe8fb;
  color: #27496e;
}

.project-credits-foot {
  display: grid;
  gap: 6px;
  font-size: 0.7rem;
  color: #5d7796;
}

.project-credits-foot span {
  display: inline-flex;
  align-items: flex-start;
  gap: 6px;
  line-height: 1.25;
}

.project-credits-drawer-compact[open] .project-credits-body {
  max-height: min(44vh, 320px);
  overflow-y: auto;
}

#tutorial {
  justify-content: flex-start;
  align-items: center;
  padding: var(--spacing-lg);
  overflow-y: auto;
}

.tutorial-container-modern {
  width: 100%;
  max-width: 600px;
  padding: var(--spacing-xl);
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  margin: var(--spacing-lg) auto;
}

.tutorial-title {
  font-size: 2rem;
  margin-bottom: var(--spacing-lg);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
}

.tutorial-accordion {
  margin: var(--spacing-lg) 0;
}

.accordion-item {
  margin-bottom: var(--spacing-sm);
  border: 2px solid #e0e0e0;
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-fast);
}

.accordion-item:hover {
  border-color: var(--secondary);
}

.accordion-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  background: var(--white);
  border: none;
  font-family: inherit;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: var(--transition-fast);
  min-height: var(--touch-target);
  color: var(--dark);
}

.accordion-header:hover {
  background: var(--light);
  color: var(--primary);
}

.accordion-icon {
  font-size: 0.9rem;
  transition: transform var(--transition-fast);
}

.accordion-item.active .accordion-icon {
  transform: rotate(90deg);
}

.accordion-content {
  padding: var(--spacing-md);
  background: var(--white);
  text-align: left;
}

.accordion-content ul {
  list-style: none;
  padding-left: var(--spacing-md);
}

.accordion-content li {
  padding: var(--spacing-sm) 0;
  line-height: 1.5;
}

.accordion-content p {
  line-height: 1.6;
}

.accordion-content strong {
  color: var(--primary);
}

.btn-tutorial-close {
  width: 100%;
  margin-top: var(--spacing-lg);
}

#lobby {
  justify-content: flex-start;
}

.lobby-header-sticky {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 3px solid var(--primary);
  box-shadow: var(--shadow-md);
}

.lobby-header-content {
  padding: var(--spacing-md);
  text-align: center;
}

.lobby-header-content h1 {
  font-size: 1.8rem;
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 900;
  letter-spacing: 1px;
}

.room-info {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

.lobby-creator-strip {
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px 8px;
  flex-wrap: wrap;
}

.lobby-creator-strip-label {
  font-size: 0.68rem;
  color: #62748b;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.creator-credit-links-inline {
  margin-top: 0;
  justify-content: center;
  gap: 5px;
}

.creator-credit-link.is-inline {
  min-height: 24px;
  padding: 0 7px 0 5px;
  background: rgba(255, 255, 255, 0.92);
  border-color: #d5e3f6;
  color: #233d5c;
  box-shadow: var(--shadow-sm);
  font-size: 0.66rem;
}

.creator-credit-link.is-inline:hover {
  background: #ffffff;
  border-color: #bcd5f3;
  box-shadow: 0 5px 12px rgba(44, 83, 132, 0.12);
}

.creator-credit-link.is-inline .creator-credit-icon {
  width: 16px;
  height: 16px;
  flex-basis: 16px;
  font-size: 0.5rem;
}

@media (max-width: 720px) {
  #join {
    align-items: flex-start;
    gap: 10px;
    padding-top: calc(var(--spacing-lg) + env(safe-area-inset-top, 0px));
    padding-bottom: calc(var(--spacing-lg) + env(safe-area-inset-bottom, 0px));
  }

  .creator-credit-shell-join {
    position: static;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    right: auto;
    bottom: auto;
  }

  .lobby-creator-strip-label {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 420px) {
  .creator-credit-shell-join {
    padding: 9px 9px 8px;
  }

  .creator-credit-link {
    font-size: 0.66rem;
    padding: 0 8px 0 5px;
    gap: 5px;
  }

  .creator-credit-link.is-inline {
    min-height: 23px;
    padding: 0 5px;
  }

  .creator-credit-link.is-inline span:last-child {
    display: none;
  }

  .creator-credit-note {
    font-size: 0.58rem;
  }

  .project-credits-drawer > summary {
    grid-template-columns: 1fr;
    gap: 2px;
    align-items: start;
    padding-top: 7px;
    padding-bottom: 7px;
  }

  .project-credits-drawer > summary::after {
    display: none;
  }

  .project-credits-summary-meta {
    white-space: normal;
  }
}

.room-badge {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  padding: 8px 20px;
  border-radius: 24px;
  font-weight: bold;
  font-size: 1.15rem;
  letter-spacing: 3px;
  box-shadow: var(--shadow-md);
  font-family: 'Courier New', monospace;
}

.player-count-badge {
  background: var(--secondary);
  color: var(--white);
  padding: 6px 14px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.player-count-badge.available { background: #4caf50; }
.player-count-badge.almost-full { background: #ffc107; }
.player-count-badge.full { background: #ff5252; }

.tab-navigation {
  display: flex;
  background: var(--white);
  border-bottom: 2px solid var(--secondary);
  position: sticky;
  top: var(--header-height);
  z-index: 99;
}

.tab-btn {
  flex: 1;
  padding: var(--spacing-md);
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: bold;
  cursor: pointer;
  transition: var(--transition-fast);
  border-bottom: 3px solid transparent;
  min-height: var(--tab-height);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  color: #666;
  position: relative;
}

.tab-ping {
  min-width: 18px;
  height: 18px;
  border-radius: 999px;
  padding: 0 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.62rem;
  font-weight: 800;
  line-height: 1;
  color: #fff;
  background: linear-gradient(135deg, #ff5d7a, #ff8a47);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.92), 0 5px 12px rgba(255, 93, 122, 0.28);
  transform-origin: center;
}

.tab-ping.is-live {
  animation: chatPingPulse 1.3s ease-in-out infinite;
}

.tab-btn.active .tab-ping {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.95), 0 4px 10px rgba(77, 163, 255, 0.18);
}

@keyframes chatPingPulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.08);
  }
}

.tab-btn svg {
  opacity: 0.7;
  transition: var(--transition-fast);
}

.tab-btn:hover {
  background: var(--light);
  color: var(--primary);
}

.tab-btn:hover svg {
  opacity: 1;
}

.tab-btn.active {
  border-bottom-color: var(--primary);
  color: var(--primary);
  background: var(--gradient-card);
}

.tab-btn.active svg {
  opacity: 1;
}

.lobby-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  padding: var(--spacing-md);
  padding-bottom: calc(var(--bottom-action-height) + var(--spacing-md) + env(safe-area-inset-bottom, 0px));
}

.lobby-content.is-chat-immersive {
  padding-bottom: calc(var(--spacing-sm) + env(safe-area-inset-bottom, 0px));
}

.tab-content {
  display: none;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.tab-content.active { display: block; animation: fadeIn 0.2s ease; }

.player-list-modern {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.player-item-placeholder {
  text-align: center;
  color: #999;
  padding: var(--spacing-lg);
  font-style: italic;
}

.players-status-stack {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.players-status-stack .warning-inline,
.players-status-stack .info-inline {
  margin: 0;
}

.player-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--white);
  border: 2px solid #e0e0e0;
  border-left: 4px solid var(--secondary);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  min-height: 60px;
  animation: slideIn 0.3s ease;
}

.player-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-left-color: var(--primary);
}

.player-item.ready {
  background: linear-gradient(135deg, #f1f8f4, #ffffff);
  border-left-color: var(--success);
  border-color: #c8e6c9;
}

.player-item.not-ready {
  background: var(--white);
  border-left-color: #999;
  opacity: 0.85;
}

.ready-badge {
  font-size: 1.5rem;
  min-width: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.player-item.ready .ready-badge {
  color: var(--success);
}

.player-item.ready .ready-badge::before {
  content: "✓";
  font-weight: bold;
}

.player-item.not-ready .ready-badge {
  color: #999;
}

.player-item.not-ready .ready-badge::before {
  content: "○";
}

.host-star {
  color: var(--warning);
  font-size: 1.1rem;
  margin-right: 4px;
}

.you-badge {
  color: var(--primary);
  font-size: 0.85em;
  font-weight: 600;
  margin-left: 6px;
}

.settings-content-modern {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.setting-item {
  padding: var(--spacing-md);
  background: var(--white);
  border-radius: var(--radius-md);
  border: 2px solid #e8e8e8;
  border-left: 4px solid var(--secondary);
  margin-bottom: var(--spacing-md);
  transition: var(--transition-fast);
}

.setting-item:hover {
  border-color: #d0d0d0;
  box-shadow: var(--shadow-sm);
}

.setting-item label strong {
  display: block;
  margin-bottom: var(--spacing-sm);
  color: var(--dark);
  font-size: 0.95rem;
}

.settings-compact-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.settings-compact-row .setting-item {
  margin-bottom: 0;
}

.setting-item label {
  display: block;
  font-weight: bold;
}

.setting-item strong {
  display: block;
  margin-bottom: var(--spacing-sm);
  color: var(--primary);
}

.checkbox-label {
  display: flex !important;
  align-items: center;
  gap: var(--spacing-md);
  cursor: pointer;
  padding: var(--spacing-sm) 0;
}

.checkbox-label input[type="checkbox"] {
  width: auto;
  min-height: 20px;
  min-width: 20px;
  cursor: pointer;
  accent-color: var(--primary);
}

.host-badge {
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md);
  background: linear-gradient(135deg, #fff9e6, #e8f5e9);
  border: 2px solid var(--success);
  border-radius: var(--radius-md);
  font-weight: bold;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.host-badge strong {
  color: var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.host-badge strong::before {
  content: "★";
  font-size: 1.3rem;
}

.host-note-modern {
  padding: var(--spacing-md);
  background: var(--gradient-card);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  text-align: left;
}



.chat-tab-modern.tab-content.active {
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
  overflow: hidden;
  gap: 10px;
  padding: 4px 2px calc(10px + env(safe-area-inset-bottom, 0px));
}

.chat-thread-modern {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1 1 auto;
  border-radius: 20px;
  border: 1px solid #dce6f4;
  background:
    radial-gradient(circle at 8% 0%, rgba(0, 188, 212, 0.08), transparent 42%),
    radial-gradient(circle at 92% 100%, rgba(255, 64, 129, 0.09), transparent 40%),
    #f8fbff;
  box-shadow: 0 12px 26px rgba(30, 64, 104, 0.12);
  overflow: hidden;
}

.chat-thread-header {
  text-align: center;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  font-weight: 700;
  text-transform: uppercase;
  color: #476489;
  padding: 9px;
  border-bottom: 1px solid #e1eaf6;
  background: rgba(255, 255, 255, 0.9);
}

.chat-erase-notice {
  margin: 0;
  padding: 5px 10px;
  font-size: 0.69rem;
  font-weight: 700;
  color: #565f6b;
  background: #eef4fb;
  border-bottom: 1px solid #d9e6f6;
  text-align: center;
}

.chat-erase-notice.recent {
  color: #7b2235;
  background: #ffe8ee;
  border-bottom-color: #ffc7d6;
}

.chat-messages-modern {
  list-style: none;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 12px 10px 16px;
  margin: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 6px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.chat-empty-state {
  margin: auto;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px dashed #c7d8ee;
  background: rgba(255, 255, 255, 0.88);
  color: #60738f;
  font-size: 0.82rem;
  font-weight: 600;
}

.chat-row {
  display: flex;
  animation: bubbleIn var(--transition-fast);
}

.chat-row.mine {
  justify-content: flex-end;
}

.chat-row.theirs {
  justify-content: flex-start;
}

.chat-bubble {
  max-width: min(82%, 440px);
  border-radius: 18px;
  padding: 8px 11px 6px;
  line-height: 1.32;
  font-size: 0.95rem;
  word-break: break-word;
  box-shadow: 0 5px 12px rgba(30, 64, 104, 0.08);
  border: 1px solid transparent;
}

.chat-row.mine .chat-bubble {
  background: linear-gradient(160deg, #1ea6ff, #0f8de3);
  color: #fff;
  border-bottom-right-radius: 5px;
}

.chat-row.theirs .chat-bubble {
  background: #fff;
  color: #223245;
  border-color: #dce6f4;
  border-bottom-left-radius: 5px;
}

.chat-sender {
  display: block;
  font-size: 0.68rem;
  font-weight: 800;
  opacity: 0.9;
  margin-bottom: 2px;
  letter-spacing: 0.02em;
}

.chat-row.theirs .chat-sender.chat-sender-tone-0 { color: color-mix(in srgb, var(--primary) 84%, black); }
.chat-row.theirs .chat-sender.chat-sender-tone-1 { color: color-mix(in srgb, var(--secondary-dark) 86%, black); }
.chat-row.theirs .chat-sender.chat-sender-tone-2 { color: color-mix(in srgb, var(--success) 84%, black); }
.chat-row.theirs .chat-sender.chat-sender-tone-3 { color: color-mix(in srgb, var(--warning) 92%, black); }
.chat-row.theirs .chat-sender.chat-sender-tone-4 { color: color-mix(in srgb, var(--danger) 86%, black); }
.chat-row.theirs .chat-sender.chat-sender-tone-5 { color: color-mix(in srgb, var(--dark) 92%, white); }

.chat-text {
  white-space: pre-wrap;
}

.chat-meta {
  display: block;
  margin-top: 2px;
  font-size: 0.64rem;
  letter-spacing: 0.02em;
  opacity: 0.72;
}

.chat-row.mine .chat-meta {
  text-align: right;
  color: rgba(255, 255, 255, 0.92);
}

.chat-row.theirs .chat-meta {
  color: #5f748f;
}

.chat-bubble.reaction {
  border-radius: 999px;
  padding: 7px 12px 6px;
  background: #fff;
  border-color: #d3dfef;
}

.chat-bubble.reaction .chat-text {
  font-size: 1.35rem;
  line-height: 1;
}

.chat-row.mine .chat-bubble.reaction {
  background: linear-gradient(160deg, #d9f2ff, #c7eaff);
  color: #0b5b91;
  border-color: #a8d6f7;
}

.chat-row.mine .chat-bubble.reaction .chat-meta {
  color: #1d5f91;
}

@keyframes bubbleIn {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.chat-composer-modern {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 8px;
  position: sticky;
  bottom: 0;
  z-index: 5;
  border-radius: 18px;
  border: 1px solid #d7e4f4;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 20px rgba(30, 64, 104, 0.1);
}

.reactions-bar-modern {
  display: flex;
  gap: 6px;
  margin: 0;
  justify-content: flex-start;
  flex-wrap: nowrap;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  padding-bottom: 1px;
}

.reactions-bar-modern::-webkit-scrollbar {
  height: 5px;
}

.reactions-bar-modern::-webkit-scrollbar-thumb {
  background: #c5d8ee;
  border-radius: 999px;
}

.reaction-btn-modern {
  padding: 5px 9px;
  border: 1px solid #d5e2f2;
  background: #fff;
  border-radius: 14px;
  font-size: 1.25rem;
  cursor: pointer;
  transition: var(--transition-fast);
  min-width: 42px;
  min-height: 34px;
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.reaction-btn-modern:hover {
  background: #eef6ff;
  border-color: #b8d4f3;
}

.reaction-btn-modern:active {
  transform: scale(0.94);
}

.reaction-btn-modern.reaction-pop {
  animation: reactionPop 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.chat-input-modern {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  padding: 6px 7px 6px 11px;
  border-radius: 24px;
  border: 1px solid #cfdff1;
  background: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), 0 2px 8px rgba(30, 64, 104, 0.07);
}

.chat-input-modern input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  background: transparent;
  padding: 8px 4px;
  font-size: 1rem;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.chat-input-modern input::placeholder {
  color: #8c9cb0;
}

.chat-input-modern .btn-icon {
  border-radius: 999px;
  min-width: 38px;
  width: 38px;
  height: 38px;
  padding: 7px;
  background: linear-gradient(155deg, #1ea6ff, #0f8de3);
  box-shadow: 0 4px 10px rgba(30, 128, 196, 0.28);
}

.chat-input-modern .btn-icon:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  filter: saturate(0.6);
}

.chat-input-modern .btn-icon:active {
  transform: scale(0.94);
}

.chat-input-modern .btn-icon.send-burst {
  animation: sendBurst 260ms cubic-bezier(0.22, 0.9, 0.2, 1);
}

.chat-input-modern.composer-sent {
  animation: composerSent 260ms ease;
}

.chat-composer-modern.composer-react {
  animation: composerReact 240ms ease;
}

.chat-composer-hint {
  margin: 0;
  font-size: 0.69rem;
  color: #5f748f;
  text-align: center;
}

#chatInput:focus {
  box-shadow: none;
}

.chat-retention-note {
  text-align: center;
  font-size: 0.72rem;
  color: #60758f;
  margin: 0;
}

#lobby.is-chat-immersive .lobby-actions-sticky {
  display: none !important;
}

#lobby.is-chat-input-focus .chat-thread-header {
  font-size: 0.68rem;
  padding: 6px;
}

#lobby.is-chat-input-focus .chat-erase-notice {
  font-size: 0.6rem;
  padding: 4px 6px;
}

#lobby.is-chat-input-focus .chat-composer-modern {
  padding: 5px;
  gap: 5px;
  border-radius: 12px;
}

#lobby.is-chat-input-focus .reactions-bar-modern {
  display: none;
}

#lobby.is-chat-input-focus .chat-composer-hint,
#lobby.is-chat-input-focus .chat-retention-note {
  display: none;
}

@keyframes reactionPop {
  0% { transform: scale(1); }
  45% { transform: scale(1.12) translateY(-1px); }
  100% { transform: scale(1); }
}

@keyframes sendBurst {
  0% { transform: scale(1); }
  35% { transform: scale(0.9); }
  70% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

@keyframes composerSent {
  0% { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), 0 2px 8px rgba(30, 64, 104, 0.07); }
  35% { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), 0 0 0 3px rgba(30, 166, 255, 0.2); }
  100% { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), 0 2px 8px rgba(30, 64, 104, 0.07); }
}

@keyframes composerReact {
  0% { transform: translateY(0); }
  45% { transform: translateY(-1px); }
  100% { transform: translateY(0); }
}

@media (max-width: 760px) {
  .chat-tab-modern.tab-content.active {
    gap: 6px;
    padding: 2px 0 calc(8px + env(safe-area-inset-bottom, 0px));
  }

  .lobby-content.is-chat-immersive {
    padding: 8px 8px calc(6px + env(safe-area-inset-bottom, 0px));
  }

  .chat-thread-modern {
    border-radius: 16px;
  }

  .chat-thread-header {
    font-size: 0.7rem;
    padding: 8px;
  }

  .chat-erase-notice {
    font-size: 0.64rem;
    padding: 5px 8px;
  }

  .chat-messages-modern {
    padding: 9px 7px 12px;
    gap: 5px;
  }

  .chat-bubble {
    max-width: min(84%, 300px);
    font-size: 0.9rem;
    padding: 7px 10px 5px;
  }

  .chat-bubble.reaction .chat-text {
    font-size: 1.2rem;
  }

  .chat-meta {
    font-size: 0.6rem;
  }

  .chat-composer-modern {
    border-radius: 14px;
    padding: 6px;
    gap: 6px;
  }

  .reaction-btn-modern {
    min-width: 39px;
    min-height: 32px;
    font-size: 1.12rem;
    border-radius: 12px;
    padding: 4px 7px;
  }

  .chat-input-modern {
    border-radius: 20px;
    padding: 5px 6px 5px 9px;
  }

  .chat-input-modern input {
    font-size: 1rem;
    padding: 6px 3px;
  }

  .chat-input-modern .btn-icon {
    min-width: 34px;
    width: 34px;
    height: 34px;
    padding: 6px;
  }

  .chat-composer-hint,
  .chat-retention-note {
    font-size: 0.65rem;
  }
}

.lobby-actions-sticky {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-md);
  padding-bottom: calc(var(--spacing-md) + env(safe-area-inset-bottom, 0px));
  background: var(--white);
  border-top: 3px solid var(--primary);
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.1);
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  z-index: 98;
}

.btn-ready {
  flex: 1;
  min-width: 140px;
  background: #666;
  color: #fff;
  gap: 6px;
  letter-spacing: 0.04em;
  transition: all var(--transition-normal);
}

.btn-ready.ready {
  background: var(--success);
}

.btn-ready .ready-lock-icon {
  font-size: 0.92rem;
  line-height: 1;
}

.btn-ready .ready-label {
  font-size: 0.86rem;
  font-weight: 800;
}

.btn-ready.ready-lock-armed {
  background: linear-gradient(135deg, #ffb300, #ff7a00);
  box-shadow: 0 0 0 2px rgba(255, 179, 0, 0.28), var(--shadow-md);
}

.btn-ready.ready-lock-pending {
  background: linear-gradient(135deg, #7a8ca8, #5f7190);
}

.btn-ready.ready-lock-cooldown {
  background: linear-gradient(135deg, #596a80, #445366);
  opacity: 0.88;
}

.btn-ready.pulsing {
  box-shadow: 0 0 20px rgba(76, 175, 80, 0.6);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 15px rgba(76, 175, 80, 0.5); }
  50% { box-shadow: 0 0 25px rgba(76, 175, 80, 0.7); }
}

.btn-leave { min-width: 80px; }

.ready-indicator {
  font-size: 1.05rem;
  line-height: 1;
}

.warning-inline,
.info-inline {
  width: 100%;
  text-align: center;
  font-size: 0.9rem;
  font-weight: bold;
  padding: var(--spacing-sm);
}

.warning-inline {
  color: var(--warning);
  background: #fff9e6;
  border-radius: var(--radius-sm);
}

.info-inline {
  color: var(--secondary);
  background: #e0f7ff;
  border-radius: var(--radius-sm);
}

@media (max-width: 600px) {
  .project-credits-grid {
    grid-template-columns: 1fr;
  }

  .project-credits-card {
    padding: 7px;
  }

  .audio-credit-row {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .audio-credit-scene {
    justify-content: flex-start;
    width: fit-content;
  }

  .settings-compact-row {
    grid-template-columns: 1fr;
  }

  .lobby-actions-sticky {
    flex-wrap: nowrap;
    padding: var(--spacing-sm);
    padding-bottom: calc(var(--spacing-sm) + env(safe-area-inset-bottom, 0px));
  }

  .lobby-actions-sticky .btn {
    min-width: 0;
    flex: 1 1 0;
    padding: 10px 8px;
    font-size: 0.88rem;
  }

  .lobby-actions-sticky .btn-leave {
    flex: 0 0 auto;
    min-width: 72px;
    padding-inline: 10px;
  }
}

@media (max-width: 600px) and (max-height: 760px) {
  .chat-tab-modern.tab-content.active {
    gap: 4px;
  }

  .chat-thread-modern {
    flex: 1 1 auto;
    min-height: 170px;
  }

  .chat-composer-modern {
    gap: 4px;
    padding: 6px;
  }

  .chat-composer-hint,
  .chat-retention-note {
    display: none;
  }
}

.setting-help-text {
  display: block;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.8rem;
  line-height: 1.35;
}