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

.multi-chat {
  --bg-color: #f0f4f8;
  --surface-color: #ffffff;
  --text-color: #333333;
  --text-sub: #6c757d;
  --primary-color: #3b82f6;
  --primary-text: #ffffff;
  --border-color: #dee2e6;
  --input-bg: #ffffff;
  --input-border: #ced4da;
  --hover-color: #e9ecef;
  --card-shadow: 0 0.2vw 0.8vw rgba(0, 0, 0, 0.08);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-color);
  color: var(--text-color);
  font-family: "Segoe UI", "Noto Sans KR", sans-serif;
  transition: all 0.3s ease;
  position: relative;
}

.multi-chat.theme-midnight {
  --bg-color: #0f0f1a;
  --surface-color: #1a1c2c;
  --text-color: #e8e8e8;
  --text-sub: #a0a0b8;
  --primary-color: #7c83ff;
  --primary-text: #ffffff;
  --border-color: rgba(255, 255, 255, 0.1);
  --input-bg: #252540;
  --input-border: rgba(255, 255, 255, 0.15);
  --hover-color: rgba(255, 255, 255, 0.05);
  --card-shadow: 0 0.2vw 0.8vw rgba(0, 0, 0, 0.3);
}

.multi-chat.theme-forest {
  --bg-color: #1a2a2a;
  --surface-color: #2d3a3a;
  --text-color: #e0e8e0;
  --text-sub: #8faa8f;
  --primary-color: #4caf50;
  --primary-text: #ffffff;
  --border-color: rgba(255, 255, 255, 0.1);
  --input-bg: #1e2e2e;
  --input-border: rgba(255, 255, 255, 0.12);
  --hover-color: rgba(255, 255, 255, 0.05);
  --card-shadow: 0 0.2vw 0.8vw rgba(0, 0, 0, 0.3);
}

.multi-chat.theme-sunset {
  --bg-color: #fff5f0;
  --surface-color: #ffffff;
  --text-color: #4a2020;
  --text-sub: #8b6060;
  --primary-color: #ff7e5f;
  --primary-text: #ffffff;
  --border-color: rgba(255, 126, 95, 0.2);
  --input-bg: #fff8f5;
  --input-border: rgba(255, 126, 95, 0.25);
  --hover-color: rgba(255, 126, 95, 0.08);
  --card-shadow: 0 0.2vw 0.8vw rgba(255, 126, 95, 0.12);
}

.multi-chat.theme-lavender {
  --bg-color: #f3e5f5;
  --surface-color: #ffffff;
  --text-color: #512da8;
  --text-sub: #7b5ea7;
  --primary-color: #9c27b0;
  --primary-text: #ffffff;
  --border-color: rgba(81, 45, 168, 0.15);
  --input-bg: #faf0fc;
  --input-border: rgba(81, 45, 168, 0.2);
  --hover-color: rgba(156, 39, 176, 0.06);
  --card-shadow: 0 0.2vw 0.8vw rgba(156, 39, 176, 0.1);
}

.multi-chat.theme-ocean {
  --bg-color: #e1f0ff;
  --surface-color: #ffffff;
  --text-color: #01375b;
  --text-sub: #4682b4;
  --primary-color: #0288d1;
  --primary-text: #ffffff;
  --border-color: rgba(1, 87, 155, 0.15);
  --input-bg: #f0f8ff;
  --input-border: rgba(1, 87, 155, 0.2);
  --hover-color: rgba(2, 136, 209, 0.06);
  --card-shadow: 0 0.2vw 0.8vw rgba(1, 87, 155, 0.1);
}

.multi-chat.theme-cyberpunk {
  --bg-color: #0d0221;
  --surface-color: #1a0a3e;
  --text-color: #00d4ff;
  --text-sub: #7b68ee;
  --primary-color: #ff006e;
  --primary-text: #ffffff;
  --border-color: rgba(0, 212, 255, 0.15);
  --input-bg: #150535;
  --input-border: rgba(0, 212, 255, 0.2);
  --hover-color: rgba(255, 0, 110, 0.08);
  --card-shadow: 0 0.2vw 0.8vw rgba(255, 0, 110, 0.15);
}

.multi-chat.theme-vintage {
  --bg-color: #efebe9;
  --surface-color: #ffffff;
  --text-color: #3e2723;
  --text-sub: #6d4c41;
  --primary-color: #795548;
  --primary-text: #ffffff;
  --border-color: rgba(62, 39, 35, 0.15);
  --input-bg: #faf6f3;
  --input-border: rgba(62, 39, 35, 0.2);
  --hover-color: rgba(121, 85, 72, 0.06);
  --card-shadow: 0 0.2vw 0.8vw rgba(62, 39, 35, 0.1);
}

.multi-chat.theme-sakura {
  --bg-color: #fff0f3;
  --surface-color: #ffffff;
  --text-color: #880e4f;
  --text-sub: #c9184a;
  --primary-color: #e91e63;
  --primary-text: #ffffff;
  --border-color: rgba(201, 24, 74, 0.15);
  --input-bg: #fff5f7;
  --input-border: rgba(201, 24, 74, 0.2);
  --hover-color: rgba(233, 30, 99, 0.06);
  --card-shadow: 0 0.2vw 0.8vw rgba(233, 30, 99, 0.1);
}

.multi-chat.theme-lemonade {
  --bg-color: #fff9c4;
  --surface-color: #ffffff;
  --text-color: #827717;
  --text-sub: #9e9d24;
  --primary-color: #f9a825;
  --primary-text: #333333;
  --border-color: rgba(130, 119, 23, 0.15);
  --input-bg: #fffde7;
  --input-border: rgba(130, 119, 23, 0.2);
  --hover-color: rgba(249, 168, 37, 0.08);
  --card-shadow: 0 0.2vw 0.8vw rgba(249, 168, 37, 0.12);
}

.multi-chat.theme-marshmallow {
  --bg-color: #fce4ec;
  --surface-color: #ffffff;
  --text-color: #00695c;
  --text-sub: #4db6ac;
  --primary-color: #f06292;
  --primary-text: #ffffff;
  --border-color: rgba(77, 182, 172, 0.15);
  --input-bg: #fff0f3;
  --input-border: rgba(77, 182, 172, 0.2);
  --hover-color: rgba(240, 98, 146, 0.06);
  --card-shadow: 0 0.2vw 0.8vw rgba(240, 98, 146, 0.1);
}

.multi-chat.theme-volcano {
  --bg-color: #4a0000;
  --surface-color: #6b1a1a;
  --text-color: #ffebee;
  --text-sub: #ff8a80;
  --primary-color: #ff5722;
  --primary-text: #ffffff;
  --border-color: rgba(255, 235, 238, 0.12);
  --input-bg: #5a1010;
  --input-border: rgba(255, 235, 238, 0.15);
  --hover-color: rgba(255, 87, 34, 0.1);
  --card-shadow: 0 0.2vw 0.8vw rgba(0, 0, 0, 0.4);
}

.multi-chat.theme-mint-choco {
  --bg-color: #e0f2f1;
  --surface-color: #ffffff;
  --text-color: #004d40;
  --text-sub: #26a69a;
  --primary-color: #00897b;
  --primary-text: #ffffff;
  --border-color: rgba(0, 77, 64, 0.12);
  --input-bg: #f0faf8;
  --input-border: rgba(0, 77, 64, 0.18);
  --hover-color: rgba(0, 137, 123, 0.06);
  --card-shadow: 0 0.2vw 0.8vw rgba(0, 137, 123, 0.1);
}

.multi-chat.theme-galaxy {
  --bg-color: #0d0018;
  --surface-color: #1a0530;
  --text-color: #e8e0f0;
  --text-sub: #b39ddb;
  --primary-color: #ab47bc;
  --primary-text: #ffffff;
  --border-color: rgba(255, 255, 255, 0.08);
  --input-bg: #200840;
  --input-border: rgba(255, 255, 255, 0.12);
  --hover-color: rgba(171, 71, 188, 0.08);
  --card-shadow: 0 0.2vw 0.8vw rgba(0, 0, 0, 0.4);
}

.multi-chat.theme-emerald {
  --bg-color: #e8f5e9;
  --surface-color: #ffffff;
  --text-color: #1b5e20;
  --text-sub: #4caf50;
  --primary-color: #2e7d32;
  --primary-text: #ffffff;
  --border-color: rgba(27, 94, 32, 0.12);
  --input-bg: #f1f8f1;
  --input-border: rgba(27, 94, 32, 0.18);
  --hover-color: rgba(46, 125, 50, 0.06);
  --card-shadow: 0 0.2vw 0.8vw rgba(46, 125, 50, 0.1);
}

.multi-chat.theme-monochrome {
  --bg-color: #0a0a0a;
  --surface-color: #1a1a1a;
  --text-color: #e0e0e0;
  --text-sub: #888888;
  --primary-color: #ffffff;
  --primary-text: #000000;
  --border-color: rgba(255, 255, 255, 0.1);
  --input-bg: #222222;
  --input-border: rgba(255, 255, 255, 0.15);
  --hover-color: rgba(255, 255, 255, 0.05);
  --card-shadow: 0 0.2vw 0.8vw rgba(0, 0, 0, 0.4);
}

.not-ready-overlay {
  position: absolute;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.not-ready-box {
  text-align: center;
  color: #ffffff;
  padding: 4vw;
}

.not-ready-icon {
  font-size: clamp(40px, 5vw, 80px);
  margin-bottom: 2vh;
  display: block;
  animation: pulse-icon 2s infinite;
}

@keyframes pulse-icon {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}
.not-ready-box h2 {
  font-size: clamp(18px, 2.5vw, 36px);
  margin-bottom: 1vh;
}

.not-ready-box p {
  font-size: clamp(12px, 1.2vw, 20px);
  opacity: 0.8;
  margin-bottom: 2vh;
}

.setup-btn {
  padding: 1vh 2vw;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 0.5vw;
  color: #ffffff;
  font-size: clamp(12px, 1.1vw, 18px);
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5vw;
}

.setup-btn:hover {
  background: rgba(255, 255, 255, 0.25);
}

.setup-wizard {
  width: 60vw;
  min-width: 320px;
  max-width: 700px;
  max-height: 85vh;
  background: var(--surface-color);
  border-radius: 1.2vw;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  color: var(--text-color);
  box-shadow: 0 0.5vw 3vw rgba(0, 0, 0, 0.3);
}

.wizard-header {
  padding: 1.5vh 2vw;
  border-bottom: 1px solid var(--border-color);
}

.wizard-header h2 {
  font-size: clamp(14px, 1.4vw, 22px);
  color: var(--primary-color);
  margin-bottom: 1.2vh;
  display: flex;
  align-items: center;
  gap: 0.5vw;
}

.wizard-steps-bar {
  display: flex;
  align-items: center;
  gap: 0.3vw;
}

.wstep {
  font-size: clamp(10px, 0.8vw, 13px);
  color: var(--text-sub);
  display: flex;
  align-items: center;
  gap: 0.3vw;
  white-space: nowrap;
  transition: all 0.3s;
}

.wstep.active {
  color: var(--primary-color);
  font-weight: 700;
}

.wstep.done {
  color: #4caf50;
}

.wstep i {
  font-size: clamp(8px, 0.65vw, 11px);
}

.wstep-line {
  flex: 1;
  height: 1px;
  min-width: 1.5vw;
  background: var(--border-color);
  transition: background 0.3s;
}

.wstep-line.done {
  background: #4caf50;
  height: 2px;
}

.wizard-body {
  flex: 1;
  overflow-y: auto;
  padding: 2vw;
}

.wizard-step h3 {
  font-size: clamp(13px, 1.2vw, 20px);
  color: var(--text-color);
  margin-bottom: 1.5vh;
  display: flex;
  align-items: center;
  gap: 0.5vw;
}

.wizard-step h3 i {
  color: var(--primary-color);
}

.guide-list {
  display: flex;
  flex-direction: column;
  gap: 1vh;
  margin-bottom: 1.5vh;
}

.guide-item {
  display: flex;
  align-items: center;
  gap: 0.8vw;
  padding: 0.8vh 1vw;
  background: var(--hover-color);
  border-radius: 0.5vw;
}

.guide-num {
  width: 2vw;
  height: 2vw;
  min-width: 22px;
  min-height: 22px;
  border-radius: 50%;
  background: var(--primary-color);
  color: var(--primary-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(10px, 0.8vw, 14px);
  font-weight: 700;
  flex-shrink: 0;
}

.guide-text {
  font-size: clamp(11px, 0.9vw, 15px);
  line-height: 1.5;
  flex: 1;
}

.guide-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.3vw;
}

.guide-link:hover {
  text-decoration: underline;
}

.guide-tip {
  padding: 0.8vh 1vw;
  border-radius: 0.5vw;
  background: rgba(76, 175, 80, 0.1);
  border-left: 0.3vw solid #4caf50;
  font-size: clamp(10px, 0.85vw, 14px);
  color: var(--text-sub);
  display: flex;
  align-items: center;
  gap: 0.5vw;
}

.guide-tip i {
  color: #4caf50;
}

.guide-tip.warn {
  background: rgba(255, 152, 0, 0.1);
  border-left-color: #ff9800;
}

.guide-tip.warn i {
  color: #ff9800;
}

.config-input-section {
  margin-top: 1.5vh;
}

.config-paste-area {
  margin-bottom: 1.5vh;
}

.config-paste-area label {
  display: block;
  font-size: clamp(11px, 0.9vw, 15px);
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 0.5vh;
  display: flex;
  align-items: center;
  gap: 0.4vw;
}

.config-paste-area textarea {
  width: 100%;
  padding: 0.8vh 0.8vw;
  border: 1px solid var(--input-border);
  border-radius: 0.5vw;
  background: var(--input-bg);
  color: var(--text-color);
  font-size: clamp(10px, 0.8vw, 13px);
  font-family: "Consolas", "Courier New", monospace;
  resize: vertical;
  outline: none;
  transition: border 0.2s;
}

.config-paste-area textarea:focus {
  border-color: var(--primary-color);
}

.parse-btn {
  margin-top: 0.5vh;
  padding: 0.5vh 1.2vw;
  background: var(--primary-color);
  color: var(--primary-text);
  border: none;
  border-radius: 0.4vw;
  cursor: pointer;
  font-size: clamp(11px, 0.9vw, 14px);
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 0.4vw;
  transition: opacity 0.2s;
}

.parse-btn:hover {
  opacity: 0.85;
}

.parse-result {
  font-size: clamp(10px, 0.8vw, 13px);
  margin-top: 0.5vh;
  padding: 0.4vh 0.6vw;
  border-radius: 0.3vw;
}

.parse-result.success {
  color: #2e7d32;
  background: rgba(76, 175, 80, 0.1);
}

.parse-result.error {
  color: #c62828;
  background: rgba(244, 67, 54, 0.1);
}

.config-divider {
  text-align: center;
  margin: 1.5vh 0;
  position: relative;
}

.config-divider::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: var(--border-color);
}

.config-divider span {
  position: relative;
  background: var(--surface-color);
  padding: 0 1vw;
  font-size: clamp(10px, 0.8vw, 13px);
  color: var(--text-sub);
}

.config-fields {
  display: flex;
  flex-direction: column;
  gap: 0.8vh;
}

.config-field {
  display: flex;
  flex-direction: column;
  gap: 0.2vh;
}

.config-field label {
  font-size: clamp(10px, 0.75vw, 13px);
  font-weight: 600;
  color: var(--text-sub);
  display: flex;
  align-items: center;
  gap: 0.3vw;
}

.config-field .required {
  color: #e53935;
  font-size: 0.85em;
  font-weight: 400;
}

.config-field input {
  padding: 0.5vh 0.7vw;
  border: 1px solid var(--input-border);
  border-radius: 0.4vw;
  background: var(--input-bg);
  color: var(--text-color);
  font-size: clamp(11px, 0.85vw, 14px);
  font-family: "Consolas", "Courier New", monospace;
  outline: none;
  transition: border 0.2s;
}

.config-field input:focus {
  border-color: var(--primary-color);
}

.wizard-footer {
  display: flex;
  align-items: center;
  padding: 1vh 2vw;
  border-top: 1px solid var(--border-color);
  gap: 0.5vw;
}

.wizard-spacer {
  flex: 1;
}

.wizard-btn {
  padding: 0.6vh 1.5vw;
  border-radius: 0.5vw;
  font-size: clamp(11px, 0.9vw, 15px);
  font-family: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4vw;
  transition: all 0.2s;
  border: 1px solid var(--border-color);
}

.wizard-btn.prev {
  background: var(--hover-color);
  color: var(--text-color);
}

.wizard-btn.cancel {
  background: transparent;
  color: var(--text-sub);
}

.wizard-btn.next {
  background: var(--primary-color);
  color: var(--primary-text);
  border-color: var(--primary-color);
}

.wizard-btn.connect {
  background: #4caf50;
  color: #ffffff;
  border-color: #4caf50;
  font-weight: 600;
}

.wizard-btn:hover {
  opacity: 0.85;
}

@media (max-width: 768px) {
  .setup-wizard {
    width: 92vw;
    min-width: 0;
    max-width: none;
    max-height: 90vh;
    border-radius: 2vw;
  }
  .wizard-steps-bar {
    flex-wrap: wrap;
  }
}
.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8vh 1.5vw;
  background: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  flex-shrink: 0;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.8vw;
}

.room-title {
  font-size: clamp(14px, 1.4vw, 24px);
  color: var(--primary-color);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.5vw;
  position: relative;
}

.user-badge {
  font-size: clamp(10px, 0.85vw, 14px);
  background: var(--hover-color);
  padding: 0.3vh 0.8vw;
  border-radius: 2vw;
  color: var(--text-sub);
  display: inline-flex;
  align-items: center;
  gap: 0.3vw;
}

.btn-edit-name {
  background: none;
  border: none;
  color: var(--text-sub);
  cursor: pointer;
  font-size: clamp(10px, 0.8vw, 13px);
  padding: 0;
  margin-right: 0.2vw;
  display: inline-flex;
  align-items: center;
  transition: color 0.2s;
}

.btn-edit-name:hover {
  color: var(--primary-color);
}

.edit-name-input {
  width: 8vw;
  min-width: 60px;
  max-width: 120px;
  padding: 0.2vh 0.4vw;
  border: 1px solid var(--primary-color);
  border-radius: 0.3vw;
  background: var(--input-bg);
  color: var(--text-color);
  font-size: clamp(10px, 0.8vw, 13px);
  font-family: inherit;
  outline: none;
}

.btn-name-action {
  background: none;
  border: none;
  cursor: pointer;
  font-size: clamp(10px, 0.85vw, 14px);
  padding: 0.1vh 0.3vw;
  display: inline-flex;
  align-items: center;
  transition: color 0.2s;
}

.btn-name-action.ok {
  color: #4caf50;
}

.btn-name-action.ok:hover {
  color: #2e7d32;
}

.btn-name-action.cancel {
  color: #e53935;
}

.btn-name-action.cancel:hover {
  color: #c62828;
}

.btn-icon {
  width: 2.5vw;
  height: 2.5vw;
  min-width: 30px;
  min-height: 30px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--surface-color);
  color: var(--text-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(11px, 1vw, 16px);
  transition: all 0.2s;
}

.btn-icon:hover {
  background: var(--hover-color);
}

.btn-icon-sm {
  width: 2vw;
  height: 2vw;
  min-width: 24px;
  min-height: 24px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-sub);
  cursor: pointer;
  font-size: clamp(10px, 0.8vw, 14px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-icon-sm:hover {
  color: var(--text-color);
}

.theme-picker {
  position: absolute;
  top: 110%;
  right: 0;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 0.8vw;
  padding: 0.8vw;
  box-shadow: var(--card-shadow);
  z-index: 200;
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.4vw;
}

.theme-swatch {
  width: 2.5vw;
  height: 2.5vw;
  min-width: 26px;
  min-height: 26px;
  border-radius: 0.3vw;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(10px, 0.9vw, 14px);
  border: 1px solid var(--border-color);
  transition: transform 0.15s;
}

.theme-swatch:hover {
  transform: scale(1.15);
}

.theme-swatch.active {
  box-shadow: 0 0 0 0.15vw var(--primary-color);
}

.chat-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.chat-sidebar {
  width: 16vw;
  min-width: 160px;
  background: var(--surface-color);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 1.5vh 0.8vw;
  overflow-y: auto;
  flex-shrink: 0;
}

.chat-sidebar h3 {
  font-size: clamp(12px, 1vw, 16px);
  margin-bottom: 1vh;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: 0.4vw;
}

.room-item {
  padding: 0.8vh 0.6vw;
  border-radius: 0.4vw;
  cursor: pointer;
  transition: background 0.2s;
}

.room-item.active {
  background: var(--hover-color);
}

.room-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.room-name {
  font-size: clamp(11px, 0.9vw, 15px);
  font-weight: 600;
}

.room-users {
  font-size: clamp(10px, 0.75vw, 13px);
  color: var(--text-sub);
  display: flex;
  align-items: center;
  gap: 0.3vw;
}

.sidebar-users {
  margin-top: 2vh;
}

.sidebar-users h4 {
  font-size: clamp(10px, 0.85vw, 14px);
  color: var(--text-sub);
  margin-bottom: 0.8vh;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 0.4vw;
  padding: 0.4vh 0.4vw;
  font-size: clamp(10px, 0.85vw, 14px);
}

.sidebar-user .fa-circle {
  font-size: 0.5em;
}

.me-tag {
  color: var(--primary-color);
  font-size: 0.85em;
}

.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.mobile-tabs {
  display: flex;
  gap: 0.3vw;
  padding: 0.5vh 1vw;
  background: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
  flex-shrink: 0;
}

.tab-btn {
  padding: 0.4vh 1vw;
  border: 1px solid var(--border-color);
  border-radius: 2vw;
  background: transparent;
  color: var(--text-sub);
  font-size: clamp(10px, 0.85vw, 14px);
  cursor: pointer;
  white-space: nowrap;
  font-family: inherit;
  transition: all 0.2s;
}

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

.mobile-other-area {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.mobile-my-area {
  flex-shrink: 0;
  height: 45vh;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.mobile-my-area.full-height {
  flex: 1;
  height: auto;
  border-top: none;
}

.pc-grid {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.grid-row {
  display: flex;
  flex-shrink: 0;
  overflow: hidden;
}

.chat-slot {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color);
  overflow: hidden;
  background: var(--bg-color);
}

.mobile-other-area .chat-slot,
.mobile-my-area .chat-slot {
  flex: 1;
}

.my-slot {
  border-color: var(--primary-color);
}

.slot-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4vh 0.7vw;
  background: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.slot-name {
  font-size: clamp(10px, 0.85vw, 14px);
  font-weight: 600;
}

.my-slot .slot-name {
  color: var(--primary-color);
}

.slot-messages {
  flex: 1;
  overflow-y: auto;
  padding: 0.6vh 0.6vw;
  display: flex;
  flex-direction: column;
  gap: 0.4vh;
  background: var(--bg-color);
}

.message {
  max-width: 85%;
  padding: 0.4vh 0.7vw;
  border-radius: 0.5vw;
  background: var(--surface-color);
  font-size: clamp(11px, 0.9vw, 15px);
  word-break: break-word;
  border: 1px solid var(--border-color);
}

.my-message {
  align-self: flex-end;
  background: var(--primary-color);
  color: var(--primary-text);
  border-color: transparent;
}

.msg-time {
  display: block;
  font-size: clamp(8px, 0.6vw, 11px);
  opacity: 0.6;
  margin-top: 0.15vh;
  text-align: right;
}

.slot-input {
  display: flex;
  gap: 0.3vw;
  padding: 0.4vh 0.5vw;
  background: var(--surface-color);
  border-top: 1px solid var(--border-color);
  flex-shrink: 0;
}

.slot-input input {
  flex: 1;
  padding: 0.5vh 0.7vw;
  border: 1px solid var(--input-border);
  border-radius: 0.4vw;
  background: var(--input-bg);
  color: var(--text-color);
  font-size: clamp(11px, 0.9vw, 15px);
  font-family: inherit;
  outline: none;
}

.slot-input input:focus {
  border-color: var(--primary-color);
}

.slot-input button {
  padding: 0.5vh 0.8vw;
  background: var(--primary-color);
  color: var(--primary-text);
  border: none;
  border-radius: 0.4vw;
  cursor: pointer;
  font-size: clamp(11px, 0.9vw, 15px);
  transition: opacity 0.2s;
}

.slot-input button:hover {
  opacity: 0.85;
}

.user-settings-popup {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-settings-box {
  background: var(--surface-color);
  border-radius: 0.8vw;
  padding: 2vw;
  width: 28vw;
  min-width: 260px;
  max-width: 400px;
  box-shadow: var(--card-shadow);
  color: var(--text-color);
}

.user-settings-box h3 {
  font-size: clamp(14px, 1.2vw, 20px);
  margin-bottom: 1.5vh;
  color: var(--primary-color);
}

.setting-group {
  margin-bottom: 1.2vh;
}

.setting-group label {
  display: block;
  font-size: clamp(10px, 0.8vw, 13px);
  color: var(--text-sub);
  margin-bottom: 0.3vh;
  font-weight: 600;
}

.setting-group select {
  padding: 0.4vh 0.6vw;
  border: 1px solid var(--input-border);
  border-radius: 0.3vw;
  background: var(--input-bg);
  color: var(--text-color);
  font-size: clamp(11px, 0.85vw, 14px);
  font-family: inherit;
  width: 100%;
}

.setting-group input[type=color] {
  width: 3vw;
  height: 2.5vh;
  min-width: 36px;
  min-height: 28px;
  cursor: pointer;
  border: 1px solid var(--input-border);
  border-radius: 0.3vw;
  background: var(--input-bg);
}

.bg-theme-options {
  display: flex;
  gap: 0.5vw;
}

.bg-theme-btn {
  padding: 0.4vh 0.8vw;
  border: 1px solid var(--border-color);
  border-radius: 0.3vw;
  cursor: pointer;
  font-size: clamp(10px, 0.75vw, 13px);
  font-family: inherit;
  transition: all 0.2s;
}

.bg-theme-btn.active {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.1vw var(--primary-color);
}

.close-btn {
  width: 100%;
  padding: 0.6vh 0;
  margin-top: 1vh;
  background: var(--hover-color);
  border: 1px solid var(--border-color);
  border-radius: 0.4vw;
  cursor: pointer;
  font-size: clamp(11px, 0.9vw, 14px);
  font-family: inherit;
  color: var(--text-color);
}

.close-btn:hover {
  background: var(--border-color);
}

.settings-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
}

.settings-modal {
  width: 50vw;
  min-width: 320px;
  max-width: 600px;
  max-height: 80vh;
  background: var(--surface-color);
  border-radius: 1vw;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  color: var(--text-color);
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5vh 1.5vw;
  border-bottom: 1px solid var(--border-color);
}

.settings-header h2 {
  font-size: clamp(14px, 1.5vw, 24px);
}

.btn-close {
  background: none;
  border: none;
  font-size: clamp(16px, 1.6vw, 24px);
  color: var(--text-sub);
  cursor: pointer;
}

.btn-close:hover {
  color: var(--text-color);
}

.settings-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
}

.settings-tabs button {
  flex: 1;
  padding: 1vh 0;
  background: none;
  border: none;
  border-bottom: 0.2vw solid transparent;
  font-size: clamp(11px, 1vw, 16px);
  font-weight: 600;
  color: var(--text-sub);
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s;
}

.settings-tabs button.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.settings-tabs button:hover {
  background: var(--hover-color);
}

.settings-body {
  flex: 1;
  overflow-y: auto;
  padding: 2vw;
}

.settings-desc {
  font-size: clamp(11px, 0.9vw, 14px);
  color: var(--text-sub);
  margin-bottom: 1.5vh;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.3vh;
  margin-bottom: 1vh;
}

.form-field label {
  font-size: clamp(10px, 0.8vw, 14px);
  font-weight: 600;
  color: var(--text-sub);
}

.form-field input,
.form-field select,
.form-field textarea {
  padding: 0.6vh 0.7vw;
  border: 1px solid var(--input-border);
  border-radius: 0.4vw;
  background: var(--input-bg);
  color: var(--text-color);
  font-size: clamp(11px, 0.95vw, 15px);
  font-family: inherit;
  outline: none;
  transition: border 0.2s;
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--primary-color);
}

.submit-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4vw;
  width: 100%;
  padding: 0.8vh 0;
  margin-top: 1vh;
  background: var(--primary-color);
  color: var(--primary-text);
  border: none;
  border-radius: 0.5vw;
  font-size: clamp(12px, 1vw, 16px);
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: opacity 0.2s;
}

.submit-btn:hover {
  opacity: 0.85;
}

.share-section {
  margin-top: 2vh;
}

.share-section label {
  font-size: clamp(10px, 0.8vw, 14px);
  font-weight: 600;
  color: var(--text-sub);
  display: block;
  margin-bottom: 0.3vh;
}

.share-url-box {
  display: flex;
  gap: 0.3vw;
}

.share-url-box input {
  flex: 1;
  padding: 0.5vh 0.6vw;
  border: 1px solid var(--input-border);
  border-radius: 0.4vw;
  background: var(--input-bg);
  color: var(--text-color);
  font-size: clamp(10px, 0.8vw, 13px);
  font-family: monospace;
}

.share-url-box button {
  padding: 0.5vh 0.8vw;
  background: var(--hover-color);
  border: 1px solid var(--border-color);
  border-radius: 0.4vw;
  cursor: pointer;
  color: var(--text-color);
  font-size: clamp(11px, 0.9vw, 14px);
}

.share-url-box button:hover {
  background: var(--border-color);
}

.share-hint {
  font-size: clamp(9px, 0.7vw, 12px);
  color: var(--text-sub);
  margin-top: 0.5vh;
}

.share-sub-label {
  font-size: clamp(9px, 0.7vw, 12px);
  font-weight: 600;
  color: var(--text-sub);
  display: block;
  margin-top: 1.2vh;
  margin-bottom: 0.3vh;
  opacity: 0.7;
}

.join-code-section {
  margin-top: 3vh;
  padding-top: 2vh;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.join-code-label {
  font-size: clamp(11px, 1vw, 16px);
  opacity: 0.8;
  margin-bottom: 1vh;
}

.join-code-box {
  display: flex;
  gap: 0.5vw;
  max-width: 400px;
  margin: 0 auto;
}

.join-code-input {
  flex: 1;
  padding: 0.8vh 1vw;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 0.4vw;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  font-size: clamp(11px, 0.9vw, 14px);
  font-family: inherit;
  outline: none;
}

.join-code-input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.join-code-input:focus {
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.15);
}

.join-code-btn {
  padding: 0.8vh 1.5vw;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 0.4vw;
  color: #ffffff;
  font-size: clamp(11px, 0.9vw, 14px);
  cursor: pointer;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 0.4vw;
  transition: all 0.2s;
  white-space: nowrap;
}

.join-code-btn:hover {
  background: rgba(255, 255, 255, 0.25);
}

@media (max-width: 768px) {
  .chat-sidebar {
    display: none;
  }
  .user-settings-box {
    width: 85vw;
    max-width: none;
  }
  .settings-modal {
    width: 90vw;
    max-width: none;
  }
  .theme-picker {
    right: -1vw;
  }
}