.session-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(5, 10, 20, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
}

.session-modal {
  background: #111827;
  border-radius: 16px;
  padding: 40px 50px;
  text-align: center;
  max-width: 480px;
  width: 90%;
  border: 2px solid #1e3a5f;
  box-shadow: 0 0 60px rgba(0, 80, 180, 0.2);
}

.session-modal h2 {
  color: #fff;
  font-size: 1.6rem;
  margin: 0 0 8px 0;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.session-modal .session-subtitle {
  color: #7fa8c9;
  font-size: 0.9rem;
  margin-bottom: 30px;
}

.session-modal input {
  width: 100%;
  padding: 14px 18px;
  font-size: 1.4rem;
  text-align: center;
  background: #0a1929;
  border: 2px solid #1e3a5f;
  border-radius: 10px;
  color: #fff;
  letter-spacing: 4px;
  text-transform: uppercase;
  font-weight: 700;
  box-sizing: border-box;
  outline: none;
  transition: border-color 0.2s;
}

.session-modal input:focus {
  border-color: #2a9d8f;
}

.session-modal input::placeholder {
  color: #3a5a7a;
  letter-spacing: 2px;
  font-weight: 400;
  font-size: 1rem;
}

.session-join-btn {
  display: block;
  width: 100%;
  margin-top: 18px;
  padding: 14px;
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  background: #2a9d8f;
  color: #fff;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s;
}

.session-join-btn:hover {
  background: #21867a;
}

.session-create-btn {
  display: block;
  width: 100%;
  margin-top: 18px;
  padding: 14px;
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  background: #e63946;
  color: #fff;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s;
}

.session-create-btn:hover {
  background: #c0313d;
}

.session-error {
  color: #e63946;
  font-size: 0.9rem;
  margin-top: 12px;
  min-height: 20px;
}

.session-room-display {
  background: #0a1929;
  border: 2px solid #2a9d8f;
  border-radius: 12px;
  padding: 20px;
  margin: 20px 0;
}

.session-room-display .room-label {
  color: #7fa8c9;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.session-room-display .room-code {
  color: #2a9d8f;
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: 6px;
}

.session-room-display .room-hint {
  color: #7fa8c9;
  font-size: 0.8rem;
  margin-top: 12px;
}

.session-room-badge {
  display: inline-block;
  background: #0a1929;
  border: 1px solid #1e3a5f;
  border-radius: 6px;
  padding: 3px 10px;
  font-size: 0.75rem;
  color: #2a9d8f;
  letter-spacing: 2px;
  font-weight: 700;
  margin-left: 10px;
  vertical-align: middle;
}

.session-new-btn {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  background: transparent;
  color: #7fa8c9;
  border: 1px solid #1e3a5f;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.session-new-btn:hover {
  border-color: #2a9d8f;
  color: #2a9d8f;
}